BIND9: How To Simulate NXDOMAIN Over Wildcard Record?


Gmail mail is handled by 10 your-dns-needs-immediate-attention.gmail

DNS just started resolving my server.prod addresses to 127.0.53.53


Redirecting from http to https in Apache


Mapping main domain and subdomain to different nameservers

How exactly should I set up DNS to delegate authority for subdomains?


VPS Cron and other email going to spam folder

How to send emails and avoid them being classified as spam?


Can I use the same client certificate in multiple OpenVPN tunnels to the same server?

Can generated OpenVPN keys be used on multiple clients?


Redirect, Change URLs or Redirect HTTP to HTTPS in Apache - Everything You Ever Wanted to Know About mod_rewrite Rules but Were Afraid to Ask


Using an Apache rewrite map for multiple hosts?


How to force HTTP for some pages in HTTPS forced website with htaccess?


htaccess rules unexpectedly forcing download of gzipped index.html


Can you help me with my software licensing issue?


Are there speed and resource allocation differences between 1x 300 GB Azure VM data disk vs 3x 100GB Data disks (and striping those)


What does Operating System Environments (OSEs) mean on System Center 2012 Licensing?


How do I deal with a compromised server?


What do these entries in my SSH logs mean?


How to get rid of ebury malware / trojan on Centos / cpanel


Windows Server 2008 compromised, how to restore?


How can I check vps server security when my hosting has been met attack


Site redirects to humbertech.com if accessed from search engine


Detect malicious script or reason creating lots of smtp connection


Local dedicated hosting space (own hardware)


AWS EC2 - How can I recover files now that I'm no longer able to SSH into my server instance?

Re-gaining root access to an EC2 EBS-boot image


Running a command a different user using `su` gives "standard in must be a tty"


Is it possible to move a mailbox from Exchange 2003 to 2010 without the mailbox being inaccesible?

Can you access a mailbox during a mailbox move from 2003 to 2010?


W: Failed to fetch http//us.archive.ubuntu.com/ubuntu/dists/jaunty-updates/multiverse/source/Sources 404 Not Found

How to install (old) packages for Ubuntu 9.04?


How to add SPF domain record for one email address only

What are SPF records, and how do I configure them?


Can you help me with my capacity planning?


How much hard drive space to install MYSQL, PHP7 & nginx?


How do you go about comparing two servers in order to figure out how many of one, you could replace with a newer one?


Server/storage choice for very low bandwidth video hosting


How to changed outgoing mail address from redhat based server

Configuration of Server root email - Change Address and Name on outgoing email


How to ensure OpenVPN connection uses specific DNS?


What are the basic steps to start blocking spam on an internal Exchange 2016 server?

Fighting Spam - What can I do as an: Email Administrator, Domain Owner, or User?


How does IPv6 subnetting work and how does it differ from IPv4 subnetting?


Haproxy not logging captured request headers with custom log format


High memory utilization in the Linux server

Why is Linux reporting "free" memory strangely?


Why is my crontab not working, and how can I troubleshoot it?


What is the memory module on a RAID card needed for?


How to restrict access to my server from the Tor Network AND Browser?


Centos openssl vulnerability high OpenSSL Running Version Prior to 1.0.1t


Is it safe to use the EPEL repository on CentOS systems?

centos: using epel repository on a server machine


How is it possible for the Root Name Servers to handle all DNS requests?


SELinux prevents Nginx from reading file

Two identical files; Apache says one is forbidden


354 End data with <CR><LF>.<CR><LF>, mail not sent

ERROR: Message not sent. Server replied: 354


Nagios NRPE unable to read output on remote system only


Configure OpenSSH SFTP Server to authentificate users against MySQL Database


SELinux preventing Apache from writing to a file


SELinux policy/rule causing Apache to serve assets from absolute path instead of document root


System crashed - After reboot logs contain "^@"

What do repeating '^@' symbols in a logfile mean?


How to fix dependenies error in this case? (centos 6)


firewalld deny all from subnet but allow some services

How to open port for a specific IP address with firewall-cmd on CentOS?


Root volume /dev/mapper/centos-root full

df shows bad information on partition usage


Nginx ssl port 433 not open/listening (refused to connect)

What causes the 'Connection Refused' message?


Can't save firewalld rules with --permanent


When are NS records at the apex of a DNS domain queried?


How do I internally rewrite all requests to subdirectory?

Catch-all rewrite rule for apache that doesn't cause duplicate urls from .htaccess


Windows server 2012/6 Limit copying size

How to activate quota for users on folders?


AIX server DOD method for secure erase disk

Fastest, surest way to erase a hard drive?


How to use DNS/Hostnames or Other ways to resolve to a specific IP:Port


Connection refused, I can't ssh into my server

ssh "WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!"


Handshake in a load balanced system with SSL pass-through


Best way to forward whole ipv6 /64 subnet range to single address (on Linux, obv)?

Can I bind a (large) block of addresses to an interface?


Can i Set Two Different server MX Record for one Domain

Is it possible to set two MX records for one domain?


htaccess file to perform specific rules to different domains

Redirect, Change URLs or Redirect HTTP to HTTPS in Apache - Everything You Ever Wanted to Know About mod_rewrite Rules but Were Afraid to Ask


how to redirect old html url to new php Url


Does Windows Server 2008 R2 really not need to be activated?

Can you help me with my software licensing issue?


Windows Server 2016 Standard License for VMS & RDS CAL


Docker Swarm free to use? can be used in production for free?


How do I get rid of possibly rogue process in Linux?

How do I deal with a compromised server?


root password found changed. Did someone break into my server?


When using tcpdump's `-i any` argument, how to get also interface name inline?

How to display interface in tcpdump output flow?


Inbound & outbound emails marked as phishing


Linux firewall accepts UDP traffic even if it's not allowed

Will tcpdump see packets that are being dropped by iptables?


How to enable/install kernel-debuginfo linux-4.14.14 on amzn-linux?

How to compile the kernel with debug symbols?


Cron with dynamic date on parameter not executing

escaping double quotes and percent signs (%) in cron


Does disabling root login enhance security?


How to technically retrieve the full list of all domain names for a particular TLD?


how to identify which physical drive(s) correspond to an entry in /etc/fstab

What's the best way to get info about currently unmounted drives?


Redirect, Change URLs or Redirect HTTP to HTTPS in Apache - Everything You Ever Wanted to Know About mod_rewrite Rules but Were Afraid to Ask


Rewrite Autodiscover to autodiscover with apache


How do I deal with a compromised server?


Apache on Ubuntu 12.04: How to find what causes folder to appear under /var/www


The packet not reaching destination when broadcasted with address 255.255.255.255


Escaping spaces in a remote path when using rsync over a remote SSH connection


Nginx: Configure max_fails and fail_timeout without an upstream definition

Set max_fails and fail_timeout for all servers in upstream in nginx


Can you help me with my capacity planning?


How big of an impact requests per second and memory consumption can have on costs


how to define hardware and network requirement for future software system


Is it possible to detect if client supports SNI?

Redirect to SSL only if browser supports SNI


Fighting Spam - What can I do as an: Email Administrator, Domain Owner, or User?


Why is my crontab not working, and how can I troubleshoot it?


sudo su not working correctly inside a bash script


How to decode traffic as NTLM protocol in Wireshark?


How long can a domain controller not be in contact with the domain without causing problems?

What's the downtime limit of a domain controller (DC)?


Test if iptables would pass a given ip/ip-range

How can I write automated tests for iptables?


Issues with HP BL460c Gen8 - wrong processor(s) and memory showing?

HP Proliant Gen8 boot failure after bios upgrade and processor upgrade


Why can't a CNAME record be used at the apex (aka root) of a domain?


Nginx is not rewriting URLs ending in .php

Why is my Nginx location rule not taking precedence?


How to generate a multi-domain (and/or wildcard) OpenSSL certificate?

Which SSL certificate would support external and internal domain names?


Systemctl service dependency without changing service file

Modify systemd unit file without altering upstream unit file


Ubuntu 14.04 PXE boot with initrd (initramfs) kernel panic


Switching yum from RHEL to .. something else?

How do I migrate from RHEL 5 to CentOS 5?


email sent from my server shows up as spam

How to send emails and avoid them being classified as spam?


Accidently ran "chown www-data:www-data / -R" as root


How do I know if I run on Amazon EC2 windows instance?

How do I know if I'm working on a Virtual Machine or not?


htaccess redirect from one domain to another domains subdirectory

Redirect, Change URLs or Redirect HTTP to HTTPS in Apache - Everything You Ever Wanted to Know About mod_rewrite Rules but Were Afraid to Ask


Redirect url like www.url.com/test/client2 to something like www.mydomain.com/test.php?clientid=2


How can I check if SQL Server 2019 Standard is activated on Server Core?

Can you help me with my software licensing issue?


How do I deal with a compromised server?


Brute force attack on my servers ports burning through bandwidth


Ubuntu server Cannot write to '' (No space left on device)

df in linux not showing correct free space after file removal


Windows Server 2012 - What type of memory do I have?

How to determine what type of RAM I need?


Sign with one DKIM key for all subdomains

How do I use OpenDKIM with multiple domain names on a single server?


How to run multiple commands with psexec?

How to Run multiple command remotely using PSEXEC?


Deleted File, Available Space Did Not Return


Is it possible to run apache as root, to execute scripts


What's important to keep track of with a vBlock?

Can you help me with my capacity planning?


How to choose the right CPU for a web server


advantages of using puppetmaster over git pull

Pros and Cons of a Decentralized Puppet Architecture


Using cron to automate backing up server with rsync doesn't work

Why is my crontab not working, and how can I troubleshoot it?


How to run a bash script from cron without being a root?


Linux user and password copy between servers with cron script

How do admins maintain user accounts across hundreds of linux servers?


Error: iptables: No chain/target/match by that name

Can't resolve issue: iptables: No chain/target/match by that name


configure DNS to access local servers using public address

How can I access a server on local network using its public name?


Hammered by botnet; iptables can't keep up

linux command to prevent dos attack by using netstat and iptables


What is the difference between RDIMM vs UDIMM


Setting up primary and secondary dns on one server

Why should one have a secondary DNS server?


How is the IP of a nameserver located in it's own domain resolved?


Find out which process is changing a file


Identification of physical network interface in linux

What is the command to flash a NIC link light?


How to view CPU Load on Windows Server 2008

What is the closest equivalent of "load average" in Windows available via WMI?


Setting the hostname: FQDN or short name?


Decrease amount of memory used by Exchange?

SBS 2011 - Is Store.exe High Memory Usage Normal?


Postfix/Dovecot Mail server with multiple domains and SSL


Installing windows on multiple computers at the same time


How do you do load testing and capacity planning for web sites?


What permissions should my website files/folders have on a Linux webserver?


SSL error, Sec_Error_Unknown_Issuer With Firefox


AWS EC2 - How can I recover files now that I'm no longer able to SSH into my server instance?


What are SPF records, and how do I configure them?


spf records and applications sending emails


What are the good ways to migrate a RAID array to bigger disks?


What is "state RELATED,ESTABLISHED" in iptables?

iptables: difference between NEW, ESTABLISHED and RELATED packets


Difference between a power strip, a power distribution unit (PDU) and a remote power switch?

What is the difference between a PDU and a power strip (both 120V, 15A)?


Apache 2.4: Differences between prefork, event and worker modes

How do I select which Apache MPM to use?


Apache with mod_jk with glassfish instances, large number of established connections for low number of users

Can you help me with my capacity planning?


Centos 6.4 Installed in System X3750 M4 IBM Server


How much memory will this PHP Script need?


High-traffic, low disk utilization AWS solution


What are the benefits of having local disks on hypervisor nodes running VMs off a SAN?


Is there any big changes if I use different VPS with better RAM?


Server Hardware/Settings for high traffic


How can I protect against Slowloris on a NGINX server?

Why are NginX and Lighttpd not affected by Slowloris?


Role of Authoritative NS record in bind9 compared with Non-Authoritative NS record in Registrar


best configuration for 5k requests per second apache

How do you do load testing and capacity planning for web sites?


Do I really need cdn for video delivery?


how do I tune for one-day-a-year traffic


How does the domain name system know the authoritative nameserver for my domain name?


Giving permission 777 to folders/files Cons?

What permissions should my website files/folders have on a Linux webserver?


Can you help me with my capacity planning?


What do I scale up on a virtual server to take load off the CPU while uploading big files?


(Single Day - Peak) Dedicated Server Requirements for CDN Set-ups


Hardware requirement for video serving to 1000 concurrent users


How do you set the outbound ip address of sendmail?

CentOS 6.2 sendmail: how to control the ip number used when relaying mail to mx.google.com


Why am I still getting spam email and what more can I do to stop it?

Fighting Spam - What can I do as an: Email Administrator, Domain Owner, or User?


Some domains receive my emails, others aren't sent


Python script executing on server, but not in a cron

Why is my crontab not working, and how can I troubleshoot it?


How to prevent Exchange server from rebooting?

Prevent Windows Server 2012 from forcing a reboot after updates


Best way to prevent default server? (for HTTPS)

Properly setting up a "default" nginx server for https


uwsgi errno 24 too many open files on CentOS / nginx

Increasing nproc for processes launched by systemd on CentOS 7


Cronjob run every two weeks, on Saturday, starting on this saturday


certbot renow nginx not resart but site work

Can't restart nginx, bind() failed (98: Address already in use)


ssh clients hang after authentication and must be killed

Can't complete SSH connection after successfully exchanging keys to Ubuntu from some networks


What causes the 'Connection Refused' message?


I can not access Http Server on Amazon EC2 Instance


Systemd reload service from package install

Proper way to reload rsyslog with a config file for a custom application


Why is IIS 10 serving content using HTTP 1.1 instead of HTTP 2?

why Chrome browser doesn't recognize my nginx http2 server?


Response from Cloudfront from S3 Origin keeps changing CORS Headers

Chrome S3 Cloudfront: No 'Access-Control-Allow-Origin' header on initial XHR request


Cannot send mails through fowarding mail


Error connecting to mysql fabric via python script


Why are SMTP queue lifetimes days instead of an hour or two?

Is it a good idea to reduce the give-up time for e-mail delivery?


Nginx force port 8080 to use SSL and rewrite or redirect http to https

nginx accept HTTP & HTTPS requests on two different ports


Postfix failed because it can't set an exclusive lock

Postfix Failed to start : unable to set exclusive lock: Resource temporarily unavailable


Active Directory Administrative Center (Server 2012 R2) crashes frequently upon updating user

Active Directory Administrative Center Crashes when updating object


MYSQL 5.7: Password not generated after installation on CentOS 7 server

How to reset or recover admin account password for MySQL?


Understanding how to foreground a background process correctly

Can I nohup/screen an already-started process?


How easy is it to keep two LVM partitions in sync


Is there a name based virtual host SSH reverse proxy?


Website and Active Directory domain share the same name


How do i resolve permission denied (public key) on ec2 aws

Why do I get "Permission denied (publickey)" when trying to SSH from local Ubuntu to a Amazon EC2 server?


Deleting a UNIX directory with a hyphen in the name


How to send emails and avoid them being classified as spam?


mails fom my mailserver go to spam folder of hotmail.com


All outbound emails from my domain get marked as spam


Bad mask /30 for address in Router Cisco (Packet Tracer)


How do I SSH to my remote machine through another machine?

Tunnel an ssh connection through an intermediate machine in a single command


How does process CPU usage relate to Load Average?

How to understand the memory usage and load average in linux server


Replaying HTTP requests from a log file, to load test a new server?

How can I replay Apache access logs back at my servers to do real world load testing?


How to support multiple domains on one Web server?

How do I host 2 different website names at the same IP address?


Tool to automatic suspending the DDOSed website before the whole VPS is being suspended by Data center

How can I stop a currently active DDoS attack?


extend virtual machine across physical machines

Multiple servers acting like a single one with all the hardware?


How do I make all subdomains to redirect to the domain directly in nginx?


Bash Script that connects to VPN server via openvpn, runs a program, and then disconnects from openvpn server

openVPN disconnect via command line in linux


Is it possible to append to a file, by piping between servers/scp/etc.?

Looking for a one step solution to appending my SSH public key to a server's authorized_keys?


Web server and mail server on same machine?

Can you help me with my capacity planning?


VLANs using one managed switch or link router to unmanaged switches?


SQL 2012 Server Database Transaction Replication performance issue


What are the optimal Java Memory Settings for Railo 4.x / Tomcat 7?


How to judge when I need a server upgrade?


How to optimize dedicated server's bandwidth output


Why shouldn't a domain controller use itself as its primary DNS server?

What should the order of DNS servers be for an AD Domain Controller and Why?


Disk shrink does not work on ESXi guests


Role of multiple domain controllers in a domain

What is Active Directory Domain Services and how does it work?


Should I move servers and change email address after email spoofing?

How to stop people from using my domain to send spam?


Fighting Spam - What can I do as an: Email Administrator, Domain Owner, or User?


Suddenly Gmail and Hotmail block our emails


Is it possible to upgrade windows 7 Pro (Volume License) to Enterprise without rebuilding

Upgrading existing Windows 7 Pro licenses to Ent?


How to enable hibernation on Windows Server 2012 with Hyper-V role?

How to enable sleep/standby on Windows Server 2012 Hyper V


Why can the primary record for a domain not be a CNAME record?


Why is Linux reporting "free" memory strangely?


Why is my crontab not working, and how can I troubleshoot it?


how to execute a command on the first, second, third and fourth Sunday of the month with crontab


Why can't I enter a PEM Pass Phrase in the prompt?


Why is PHP ignore session.gc_maxlifetime?


High density disk bay rack chassis - why such a big difference in price?

Why are enterprise SAS disk enclosures seemingly so expensive?


how to change my domain to point Amazon AWS EC2


Choosing FQDN for Internal Use (avoiding split DNS)


Can you help me with my software dependency issue?


10gen mms monitoring service to start after reboot

How to configure Python Script to run as a daemon


Are people really going to use public IPv6 addresses on their private networks?

Switching to IPv6 implies dropping NAT. Is that a good thing?


Can't start apache... (98)Address already in use: make_sock: could not bind to address 0.0.0.0:80


Assign Entire IPV6 /64 Subnet to Network Interface

Can I bind a (large) block of addresses to an interface?


Apache htaccess redirect http/www to https/non-www

Redirect, Change URLs or Redirect HTTP to HTTPS in Apache - Everything You Ever Wanted to Know About mod_rewrite Rules but Were Afraid to Ask


.htaccess 301 redirect for https and www


Laravel project in subfolder of public_html gives trouble with .htaccess redirect


UPDATED: Why have I worked so much with URL rewriting when I can't accomplish a very small feat?


Amazon EC2 - Forcing redirect of non-www http and https domains to "https://www" domain in httpd.conf


.htaccess RewriteRule for directory based with two parameters


Different Product Key & License in Microsoft Volume License and What is MAK Activations Used/Available*?

Can you help me with my software licensing issue?


Microsoft Volume Licences - How do I get and use them?


Script file is created to send junk mails

How do I deal with a compromised server?


A domain controller in Azure ends up public on the Internet with no firewall - is it compromised?


Centos Apache sending spam from my server


Azure malicious activity / SSH brute force


2008 R2 file server shared folders are displaying hex names


Unknown ssh connections found in lsof -i has my server been compromised?


Does somebody know a lot of linux debian and abuse warnings?


Should I sudo as root or use a public key

Does disabling root login enhance security?


Decode & restore files from /dev/md3 (Hacked server)


Redirect all requests to HTTPS, except for one subdirectory


apache: how to redirect one HTTPS TLD to another HTTPS TLD of the same domain

Fix missing ssl-cert for subdomain www. using redirect or similar


Can I setup an MX record for a particular user email address?


Nginx rate limiting at server level excluding a particular IP

How to rate-limit in nginx, but including/excluding certain IP addresses?


Redirect, Change URLs or Redirect HTTP to HTTPS in Apache - Everything You Ever Wanted to Know About mod_rewrite Rules but Were Afraid to Ask


What are the different widely used RAID levels and when should I consider them?


Applying ownership patterns from another server


firewalld has 443 enabled but it refuses connections

What causes the 'Connection Refused' message?


How do I get the PID of a conhost process associated with the batch file and cmd process that created it?

How to get own process pid from the command prompt in Windows


Make MX records point to two servers (gmail and hostgator server)


Why is iptable necessary if i can trust my server installation?


Did someone succeeded in getting to my server?

How do I deal with a compromised server?


How do you do load testing and capacity planning for web sites?


SPF Record Fails - How to verify Server IP Address and managing multiple SPF records

What are SPF records, and how do I configure them?


Can you help me with my capacity planning?


After reinstalling a domain controller, how to recover member computers without rejoining?

Command to remove computer from non-existant domain


Crontab not running all @reboot services

Why is my crontab not working, and how can I troubleshoot it?


ssllabs.com finding Certificate #2 with wrong domain

Two domains (when SSL) on same directory


Route 53 going from www domain version to naked

Redirect non-www requests to www on Amazon Route 53


How to limit budget for public AWS S3 or Google Cloud Storage?

How to prevent DDoS attack on Google Cloud Storage


How to fix the invalid name in the ssl certificate

Generating a self-signed cert with openssl that works in Chrome 58


How to download SSH keys in Debian on GCP?

Download public & private keys from Google Cloud Instance


How to make rule trigger on DNS rdata/IP address?

How to set Suricata to log only DNS queries that come from specific IP addresses?


Recursively removing the content of a directory but not a directory itself

Removing the content of a directory recursively


How to send emails and avoid them being classified as spam?


Preventing RDP screen to go black when minimized

Remote Desktop Session Black after Minimize


ping returns IP from hosts file but not nslookup in windows 10


Executing a command before starting a systemd service

Modify systemd unit file without altering upstream unit file


Adding internal A-record to a second level domain


Google IP Address Ranges for incoming SMTP


How to monitor network usage per user in Linux?

How can I monitor per-user bandwidth on linux?


DNS - How to make existing domain to no longer resolve & maintain functional MX record

DNS: Is it valid to have an "MX" record and no "A" record?


Linux - Help, I'm running out of inodes!


Block an outbound destination IP to prevent connections waiting timeout duration


Determining the name of the VMware host of a VM guest - from the guest


debian - using apache virtual host as proxy

How do I redirect subdomains to a different port on the same server?


what happens to the local users and groups when promoting a server to a domain controller?

Local user accounts have disappeared after installing Active Directory and running dcpromo


Rewrite rule Mod_Proxy truncate file name

Redirect, Change URLs or Redirect HTTP to HTTPS in Apache - Everything You Ever Wanted to Know About mod_rewrite Rules but Were Afraid to Ask


"Net Send" command into Microsoft server 2008 r2


Host says server is affected by malware, anyone knows this one ? What to do?

How do I deal with a compromised server?


malware infected server respawing of files


SSL certificate for www. and non-www domain

How to install a single SSL certificate for www and non-www


How can I make Apache return error on wrong http_host?

How to get apache to send a 404 based on no matching VirtualHost section (based on ServerName) being found?


Windows Server 2008 R2 automated reboot everyweek

How Often Do Windows Servers Need to be Restarted?


Changing HTML-TITLE for web application with NGINX

Is it possible to filter/edit web content using Apache/Nginx/Lighttpd?


How to watch a file, who accesses or uses

Find out which process is changing a file


How do you do load testing and capacity planning for web sites?


Windows Server 2012 NIC Teaming vs. MPIO

Why MPIO instead of 802.3ad Team for iSCSI


Failed to make https request with self signed certificate authentication

What causes the 'Connection Refused' message?


How to transfer domain to a new Hosting provider while keeping emails on old Hosting provider?

Transferring domain to new host, but keeping email on old host


re-parenting to screen two processes joined by pipe

Moving an already-running process to Screen


Is the length of ethernet frame fixed between different media?

How does Ethernet know how long a frame is?


Redirect, Change URLs or Redirect HTTP to HTTPS in Apache - Everything You Ever Wanted to Know About mod_rewrite Rules but Were Afraid to Ask


Redirecting of hostname to full qualified domain name with HTTPS fails

Fix missing ssl-cert for subdomain www. using redirect or similar


Letsencrypt for all subdomains *.example.com

How to use Let's Encrypt DNS challenge validation?


Do I need a separate SSL certificate for a DNS redirect?


Is it possible to enable starting a custom Ubuntu service without root access?

systemd: Grant an unprivileged user permission to alter one specific service


Why are my Postfix mails recognized as Spam?

How to send emails and avoid them being classified as spam?


Prevent multiple cron jobs from running concurrently


apache https applies to other http vhosts

Multiple SSL domains on the same IP address and same port?


What's the default order of "for f in directory/*"?

In Bash, are wildcard expansions guaranteed to be in order?


Windows server 2012 Essential R2 trial activation

Can you help me with my software licensing issue?


UFW Forwarding on Port 80 to port 3000 on Single VPS


Active directory overwriting existing computers

Block computer from joining a domain if it has the same name as another computer object in ADUC


Memory usage in docker container - 600MB for OS only?

Why is Linux reporting "free" memory strangely?


How to change $PATH for crontab in Opensuse

Why is my crontab not working, and how can I troubleshoot it?


Cron appears to run but doesn't execute in the same way as when run manually from the terminal


bash scripts work fine when I run it from command line but not from cron


make apache send header 401 unless a parameter is present


Active Directory Authentication from the Internet

Should I expose my Active Directory to the public Internet for remote users?


Accidentally deleted openssl lib packages and can't get yum or wget to work again


How to resolve hostnames from a intranet interface?

What causes the 'Connection Refused' message?


RewriteCond pattern all match and logs showing the correct redirect link but website still not redirect

Relationship of ServerName, ServerAlias, host.file and how to define them in httpd-vhosts.conf


Critical Policy Violation email from Google Cloud Platform. What to do?

How do I deal with a compromised server?


Does using an smtp relay help preventing your email going into spam?


Preventing sent email from getting labeled as spam


How is load average related to CPU utilization?


Is it possible to automatically restart crashed services in Linux?

How to automatically restart a service on failure in Linux


Fast way of copying IMAP to IMAP on CentOS


using outside smtp to deliver cron generated emails

What minimal SMTP client will allow me to relay cron output to an external email address?


Allow non-root process to listen on port 80 without doing anything drastic

Bind to ports less than 1024 without root access


What's the difference between FQDNs and Hostnames

What is the difference between a hostname and a fully qualified domain name?


Display X clients on from Ubuntu host on Cygwin box through VPN

What does "Warning: untrusted X11 forwarding setup failed: xauth key data not generated" mean when ssh'ing with -X?


What are the benefits of running chef-server instead of chef-solo?


Upgrade Windows Server 2008R2 to support SNI

Setup IIS 7.5 with multiple website bindings and SSL?


Apache: PHP scripts not executing when running 7.0


How to restrict SMTP login to its own address in sasldb2?

How to enforce sender address to be "logged-in-user@example.org" in Postfix?


MYSQL error: IP address could not be resolved

MySQL [Warning] IP address could not be resolved


How much memory would be needed for a Wordpress site with 8.000 hits per day with the occasional spike?

How do you do load testing and capacity planning for web sites?


Django - How many simultaneous requests are possible


effective uid is not 0, is sudo installed setuid root?


Can I have multiple DHCP servers on one network?


How can I handle heavy Database interaction at peak hours?

Can you help me with my capacity planning?


storage sizing for serving high bit rate video


using umask to set default file settings


Why Does hotmail still reject my emails?


Why Linux free memory is not just the 'free' of '-/+ buffers/cache'

Why is Linux reporting "free" memory strangely?


Why is my crontab not working, and how can I troubleshoot it?


Trouble running this simple cronjob on the server every 24 hours. What is wrong?


How can i keep the give the subject of the email using postfix in crontab?


How to rescue a server with no free inodes (from DDOS)

rm on a directory with millions of files


Relay email for some addresses to a different server

How can I forward to a specific MTA based on email address?


Can I bind a (large) block of addresses to an interface?


htaccess redirect all traffic on specific domain to another domain, exclude folder and filetype

Redirect, Change URLs or Redirect HTTP to HTTPS in Apache - Everything You Ever Wanted to Know About mod_rewrite Rules but Were Afraid to Ask


Trying to understand Microsoft SQL and Windows Server licensing

Can you help me with my software licensing issue?


Vmware EULA - Essentials and vSphere Standard same site


Site hacked, need help to look for clues about how it happened

How do I deal with a compromised server?


How do I block my server from performing port scans?


Something is setting IPSec policies and Firewall Rules. How can I find it? (Windows 2008R2)


Server CPU issues, msiexev.exe a culprit?


Restoring permissions after a virus removal


Is it safe to ssh to a compromised server?


What's different between try_files and rewrite?


Why Requests per second in my vps is so low?

How do you do load testing and capacity planning for web sites?


Can you help me with my capacity planning?


mongodb, does one *need* a replica set for a minimal production db?


Hard drive isn't reconized when installing OS on proliant server

CentOS 7 x64 and HP Proliant DL360 G5 SCSI Controller compatibility


Setup Domain Controller and Active Directory on Amazon EC2 as Primary AD


Need to restrict user to just a single directory enable him to have ssh also to that directory?

fatal: bad ownership or modes for chroot directory component "/" in SFTP


Redirect subdomain to subdomain in HTTPS with Apache2

Fix missing ssl-cert for subdomain www. using redirect or similar


Why does nginx select a location block with a non-matching regex?

Can nginx location blocks match a URL query string?


How to break AWS certificate to public/private keys and intermediate certificate?

Download SSL certificate from aws certificate manager


How to block IP Address in ASA5505 firewall via ASDM?

How to block an Internal IP address talking to an external IP Address on Cisco ASA 5505


Reverse proxy FTP traffic to Docker containers based on hostaname?

How do I make protocol foo hostname-aware?


How to persist iptables configuration on Amazon EC2 VPC NAT Ami?


Puppet: remote clients are not updated by puppetmaster

Puppet client not connection to master - SSL connect Error


Puppet server hostname does not match certificate - can't authenticate. How to disable puppet authentication?


Need to prevent SBS 2003 disabling its DHCP server if it sees another DHCP server on network

Is it possible to prevent DHCP service on SBS 2003 from shutting down due to rogue DHCP server?


different php-versions on server with multiple v-hosts

Running two PHP versions (5.3 & 5.2) at the same time


Setting up SSL at the server level on a VM

When I have a Windows VM, how do I upload my website to it?


Where in the DNS process are NS records used?

DNS Resolution for example.com - Can you explain?


Without glue, how do DNS servers know the ip of nameservers?


Third-party SSD solutions in ProLiant Gen8 servers


Liferay cluster with SAN storage with ext3

SAN Storage shared disk, files copied from other servers cannot be seen without re-mounting


How to handle a DDoS attack on a search engine?


How to fight request spam (DDOS i guess) on CentOS server


Multiple POST SQL injection from same IP

Are there simple command line tools to decode a SQL Injection request string?


Cpu, memory, network usage monitor for linux vps

What tool do you use to monitor your servers?


Creating Web App & Want to be Sys Admin for myself - Help!

What is the single most influential book every sysadmin should read?


Give access to specific services on Windows 7 Professional machines?

What is the best way to allow a domain user to start and stop services on the machine?


How can I find out who is hosting a certain domain?

How can I determine what hosting provider hosts a site?


sendmail limiting x amount of emails per domain per certain amount of time rule

How do I throttle outbound email with sendmail


Determine Linux Server's Architecture (32 or 64 bit)

How do I know if I am running 32 or 64-bit Linux?


Providing root ssh access to virtual servers behind NAT?

Is there a name based virtual host SSH reverse proxy?


postfix sending newsletters as spam to the receivers

How to send emails and avoid them being classified as spam?


How can I send mass emails and SMS to our customers without our domain being marked as spam?


Problems when using IIS SMTP Pickup Service


How to work out how many IP's you've got available on a /29 network mask


Why is Windows 7 not following all routes?


What user should an application pool bound to a Wordpress site use in IIS?

How to enable automatic update in wordpress running on IIS7 and Windows 2008?


Active Directory member servers in the DMZ


How to make a Windows service start before another at Windows startup

How to add dependency on a Windows Service AFTER the service is installed


SSH to different devices behind router using domain names without Nginx/Reverse Proxy?


How to troubleshoot marketing e-mail inbox rate / deliverability?


When is an email rejected by the receiving server?


Automated email sent using Bash mail function gets filtered as spam by Gmail


Can't access domain internally via public IP address

Loopback to forwarded Public IP address from local network - Hairpin NAT


How to redirect all http traffic to https

In Nginx, how can I rewrite all http requests to https while maintaining sub-domain?


How does a load-balancer manages end user http sessions?

What kind of load balancing algorithms are there


RSync incremental backups, backing files that haven't changed. Does file access time cause a re-backup?


Traffic shaping for upload/download speed simulation

How can I do traffic shaping in Linux by IP?


DNS subdomain linking to service on port 5000

How do I redirect subdomains to a different port on the same server?


Openshift Wordpress site custom domain name 'www' doesn't work

Redirect, Change URLs or Redirect HTTP to HTTPS in Apache - Everything You Ever Wanted to Know About mod_rewrite Rules but Were Afraid to Ask


How to license a server with two processors, 16 cores and Windows Server 2016 Standard?

Can you help me with my software licensing issue?


What are my options to run MS SQL 2012 on Amazon RDS for development if I only have MSDN license?


Server 2008 Setup Remote Desktop Services


How do I deal with a compromised server?


Is it a ok wordpress file or is hack, look at this code


is there a tool for windows 7 that can find which program is modifying a particular file


Wordpress Website now showing 404 Error? Can't fix


windows server 2016 hacked for the third time


My server mail going junk in hotmail and yahoo


How to know if connection is made to a server using alias or not?

How do I make protocol foo hostname-aware?


virt-install - Couldn't find hvm kernel for Red Hat Enterprise Linux tree


Apache doesn't log remoteIP when RemoteIPHeader X-Forwarded-For is present


Nginx - open socket left in connection and worker_connections are not enough

Nignx - worker_connections are not enough


How to add a header in .htaccess bases on filetype (mime type)?


Migrating 2 domain controllers from server 2003 to 2012


where can I find the Specifications of a Blade Server?


Azure Nested Hyper-V Child VM No Internet Access

Azure VM Nested Hyper-V VM Network Configuration


CPU platform is changing after resizing the instance


Is it possible to set up a web server on the same domain used by Active Directory?

Website and Active Directory domain share the same name


Is it possible to send mail to other domain without ssl authentication?

How to correct Postfix' 'Relay Access Denied'?


Can I restrict openssh to only allow public keys with pass phrases

How to tell if a public SSH key has a passphrase


Run multiple virtual machines on a virtual server

Is it possible to setup a virtual machine inside another virtual machine


Why does Google junk mails from my server?

How to send emails and avoid them being classified as spam?


Setting up new mail server and avoiding spam filters


Hotmail is rejecting email from a digital ocean droplet


My Email Strightly goes to gmail spam/just folder ( DKIM,SPF,DMARC is okay )


Email for domain vs subdomain at two different locations

How should I setup separate MX records for a subdomain?


Can a RAID 10 array be transferred from a Windows box to a Synology (or other) enclosure?

Moving a RAID array from one machine to another


How to add a line to the end of a file which I can access via sudo?


Debian SSH disabled password logins but can still login


Deleting files from Remote FTP-Server older than X days (only ftp, curl or lftp)

Deleting files from Remote FTP-Server older than x days


SSL certificate selection based on host-header: is it possible?


Is there any latest release or other option to use LVS load balancing?

Is Linux Virtual Server old, or is it standing still?


Do ns1 & ns2 nameservers need a PTR record?

Importance of PTR records on nameserver IP's?


HTTPS activated, how to refuse HTTP connections

HowTo redirect HTTP to HTTPS on the same httpd?


How to turn off partial content response in apache

Is there a way of disabled byte-range requests in Apache?


cron - How many times the cron job will run when given aterisk(*) on all positions

What does * * * * * (five asterisks) in a cron file mean?


Access server behind router with external ip (works well except from pc in same network)

Loopback to forwarded Public IP address from local network - Hairpin NAT


How does 3G/Mobile phones get allocated an IP address? Does this mess with Google Analytics?

How are cellphone IP addresses assigned?


Renting a dedicated, but getting a VPS. How to detect?

VMware Linux Server -- how can you tell if you are a vm or real hardware?


What is the best way to monitor a production server?


mysqlhotcopy — A Database Backup Program

How can I back up and replicate a large MySQL database?


Choosing local versus public domain name for Active Directory

Windows Active Directory naming best practices?


Domain name help with Active Directory and DNS


Delete files older than X days from remote FTP server

Deleting files from Remote FTP-Server older than x days


How to run a server on port 80 as a normal user on Linux?


TIME_WAIT in netstat of Apache processes


How do I redirect subdomains to a different port on the same server?


Apache2 mod_rewrite failing for non-existent sub directories

Redirect, Change URLs or Redirect HTTP to HTTPS in Apache - Everything You Ever Wanted to Know About mod_rewrite Rules but Were Afraid to Ask


Mod Rewrite appends Document root in rewrite rules


Apache2: Handling a subdirectory in another VirtualHost


How to add exceptions to apache reverse proxy rules


Subdomain doesn't work without www in front of it


How can I use mod_rewrite to remove everything after the ? (question mark) in a URL?


Windows Evaluation -> Full version- do I have to rebuild the OS?

Can you help me with my software licensing issue?


What does VMware want to tell with these licence options?


Will it be possible to upgrade the Windows 8.1 (Pro) Preview to the release version?


How to Decide if I should upgrade the Ubuntu Server

How do you do load testing and capacity planning for web sites?


Configuring server for high performance laravel app


What account should own the files on a shared ubuntu webserver?

What permissions should my website files/folders have on a Linux webserver?


Change permission for home directory on debian


Mechanism to get the current running configuration values in nginx


Calculating required uplink capacity of network switch

Can you help me with my capacity planning?


What is the resolution rate that I can expect from Bind resolver (or alternative)?


SSH & SFTP: Should I assign one port to each user to facilitate bandwidth monitoring?

measuring bandwidth per-user used by ssh server-side connections on linux


restrict ssh reverse portforwarding per user

How to limit reverse SSH tunelling ports?


Mail delivery failed for a message I didn't send

How to stop people from using my domain to send spam?


Put command times out, but I can access to the server

How to configure vsftpd to work with passive mode


How to run a website domain without redirecting if IP is already used for another website?

Hosting multiple distinct folders for distinct domains


How to move /var to another existing partition?


How do I prevent Apache from answering requests for domains I don't host?


Blocking IP addresses of obvious hack attempts


Difference between "crontab -e" & editing crontab file manually?

Why is my crontab not working, and how can I troubleshoot it?


Is 6,10-12 valid syntax fo the hour part of a cron task?


run ubuntu crontab every 19th of the month in 2am


Shell script only executes partially when run with CRON


Prevent being locked out when configuring SSH and iptables

How do you test iptables rules to prevent remote lockout and check matches?


How In Running multiple Web Server on Multi Server at one static IP

I have a VPS running on a single IP, can I redirect domains to ports or do I need separate IPs?


Symfony2 app in subdirectory of nginx configuration


Can't resolve issue: iptables: No chain/target/match by that name


Notify when some grouped services fail in Nagios

Nagios check whether at least one out of two services is OK


Installing a third party application package on CentOS 6.4 fails due to missing dependencies libcrypto.so.10 and libssl.so.10


Assign all of an IPV6 subnet to localhost

Can I bind a (large) block of addresses to an interface?


Disk IO Rate: What causes it and what does it mean to me?

Get high I/O rate alert from linode.com,how to location problem?


Apache rewrite rule to redirect a URL with parameters to a URL without parameters

Redirect, Change URLs or Redirect HTTP to HTTPS in Apache - Everything You Ever Wanted to Know About mod_rewrite Rules but Were Afraid to Ask


AnyConnect on ASA5520 licensing required?

Can you help me with my software licensing issue?


Use Windows license from physical machine on hosted VM within linux


Fake httpd process masked under perl execution

How do I deal with a compromised server?


Why my Wordpress is trying to connect to an strange url?


How did my non-CMS based website get hacked? I have a file called mails.php which contains a preg_replace statement


How I can look from that script runs sendmail?


Someone Uploaded PHP Backdoor to Wordpress Site


trying to locate process on server which is sending spam email


Port scan attacks detected from my server


Determine server damage - File injected possibly through ProFTPD


Mail getting blocked as abuse, error 500


Firewall configured to allow 25/tcp but still cannot telnet into server on that port


How can you reduce ambient noise from servers?


Incorrect Disk space usage in Linux server

Disk full, du tells different. How to further investigate?


BackupPC using rsync fails with "protocol version mismatch -- is your shell clean?"

Rsync seems incompatible with .bashrc (causes "is your shell clean?")


DNS - how does it resolve the name servers itself?


Why don't NS records contain IP addresses?


Which RAID configuration is better for hypervised Virtual Machines with three 300GB SAS drives

What are the different widely used RAID levels and when should I consider them?


small business 10 workstation network mess

10 servers to administer and I'm a history major


Advice about running nginx or nginx + apache

How do you do load testing and capacity planning for web sites?


How to calculate highest CCU (concurrent users) in server linux?


Setup web folder for multiple developers and Apache

What permissions should my website files/folders have on a Linux webserver?


How do I find if there is a rogue DHCP server on my Network?


Sending bulk / single emails from a single domain

How to send emails and avoid them being classified as spam?


Does PHP mail function need a mail server?


mail rejected from some domains on same VPS


My mails sent from Postfix + Dovecot recognized as Spam by Gmail


Intranet/Internet DNS name conflict on windows server

Windows Active Directory naming best practices?


Cluster office workstations when not in use?

Multiple servers acting like a single one with all the hardware?


nginx reverse proxy setup to handle graceful deployments of upstream servers

How to make a modification take affect without restarting nginx?


How do I monitor system parameters like memory, CPU and disks on windows systems via SNMP?


Change file system from case-sensitive to case-insensitive


Hosting SSL tunneled OpenVPN and HTTPS on the same server at the same 443 port


IPv6: Are There Actual Differences Between Local Addresses ::1 and ::ffff:127.0.0.1?

IPv6 Loopback Addresses (equivalent to 127.x.x.x)


Can I bind a (large) block of addresses to an interface?


htaccess .zip url rewrite from /*.zip to /key/*.zip

Redirect, Change URLs or Redirect HTTP to HTTPS in Apache - Everything You Ever Wanted to Know About mod_rewrite Rules but Were Afraid to Ask


"Simple" .htaccess rewrite for sites in subfolders not working


Broken activation of Windows Server 2012

Can you help me with my software licensing issue?


Can I access a Windows 2016 server from a 2012 client through a 2012 server?


Prevent php script from overriding php.ini

How do I deal with a compromised server?


Please help identify any weird processes


how compile kernel and disable root access?


How do I know how the hacker gained access to my machine?


git reports "No space left on device", but df -h says there is is 2.5G available

Disk full, du tells different. How to further investigate?


no space on ext4 partition left with files not summing up to used space and with sufficient inodes


df -h show system full even after clearing bloated log folder


Creating uptime monitor - Identifying network bottleneck

How do you do load testing and capacity planning for web sites?


/etc/cron.hourly/asl exited with return code 127

Why is my crontab not working, and how can I troubleshoot it?


Crontab is not working. How do I troubleshoot it?


mysqldump not working/running via cron job


Can't get Codeigniter URLs working on Nginx


Using setenv in Apache (Windows) DocumentRoot


Techniques for securing mod_php for shared hosting (WAMP)?


Delete a file with name '--help' using rm command

How to cd into a directory with this name "-2" (starting with the hyphen)?


What is the correct setting of Nginx's fastcgi_param SCRIPT_FILENAME?

Nginx $document_root$fastcgi_script_name vs $request_filename


Log all commands run by admins on production servers


Attempting to block "wordpress" useragent is overloading CPU


Windows server 2008, a very small DDoS is able to kill my server


PHP web hosting: how to prevent clients to DOS/DDOS?


How to protect from spoofed SYN flood on a Linux machine?


On a RAID controller card, what is the difference between the connector, port, and device numbers?


`sudo echo "bla" >> /etc/sysctl.conf` permission denied


How do I "test" name-based virtual hosting?


Connect to Active Directory from outside

Should I expose my Active Directory to the public Internet for remote users?


Not able to connect to rackspace server via FTP

"500 OOPS: vsftpd: refusing to run with writable root inside chroot()" - login failed on Debian


Blocking IP Addresses dynamically without any software

linux command to prevent dos attack by using netstat and iptables


How to apply the same rules to several locations with Nginx?


Have set up OpenVPN server on Google Cloud Engine. Can't access machine after restart

VPN server on Google Compute Engine with OpenVPN


Fetch an SNI certificate from https with openssl

OpenSSL returns different SSL certificate to that shown by Chrome


Why can't a CNAME record be used at the apex (aka root) of a domain?


SELinux preventing Apache from writing to a file


DNS just started resolving my server.prod addresses to 127.0.53.53


Point specific S3 URL to another IP (EC2 instance)


iptables port forwarding for UDP port has no effect

Why some iptables DNAT rules don't work until reboot?


Nginx 98: Address already in use - Failed to start A high performance web server issue

Can't restart nginx, bind() failed (98: Address already in use)


Iptables to lock down compromised server to a single ip

How do I deal with a compromised server?


Ever encountered this "http://mattker.hu/images/image.php" in scripts in your site?


Disk full, du tells different. How to further investigate?


Server Bandwidth requirements for a website?

How do you do load testing and capacity planning for web sites?


How do you do load testing and capacity planning for databases?


MySql calculate number of connections needed


adding PATH in /etc/profile and ~/.bash_profile but not showing via SSH

Why does the $PATH of an ssh remote command differ from that of an interactive shell?


What permissions should my website files/folders have on a Linux webserver?


Bridge (?) that is doubly-connected to a network

What happens when you plug two sides of a cable to a single networking device?


Add multiple domain/IPs to SPF record to support google and third part senders

What are SPF records, and how do I configure them?


TinyDNS and proper settings for SPF records


What will be the best mysql settings for 3gb server?

Can you help me with my capacity planning?


Server optimization for long running script


Using Tomcat server for production - Ideal configuration


Can I host multiple sites with one Amazon EC2 instance


For EC2 and RackSpace Cloud: Is there a Windows equivalent of Unix 'CPU steal time'?


How does ServerName and ServerAlias work?

Difference between ServerName and ServerAlias


How to configure multiple domain on single hosting

Hosting multiple distinct folders for distinct domains


How to send notification based on host and not service in Nagios?

Configure Nagios To Alert Depending On Host Group That Service Alert Originates From


How do I prevent Apache from answering requests for domains I don't host?


Freeing up memory (RAM) on Ubuntu 8.04 Server

Why is Linux reporting "free" memory strangely?


Is it worth setting up a private subnet in Amazon EC2 (VPC)

AWS VPC - why have a private subnet at all?


how to create a cron job that runs on the first day of month

Why is my crontab not working, and how can I troubleshoot it?


Can't do "yum update" in Fedora running in VirtualBox

Vagrant / VirtualBox DNS 10.0.2.3 not working


How to make your apache application accessible within network


How to include multiple spf domains with different mechanisms in a single spf TXT Record

What are SPF records, and how do I configure them?


What's a good way to schedule scripts that depend on each other?

How to schedule server jobs more intelligently than with cron?


Xeon Processor or Corei7 for Mysql as a Database Server?

Can you help me with my capacity planning?


Virtaul machines on Intel Xeon e5420 cpu


Running on two servers vs. one with more memory?


How to manage high traffic on news portal(cache)?


Nginx only recognises files in root dir (Permission denied on symlink'ed dir/files)

Permission denied in vhost document root


How to stop people from using my domain to send spam?

Fighting Spam - What can I do as an: Email Administrator, Domain Owner, or User?


How can I run two domains from one dedicated server?

Hosting multiple distinct folders for distinct domains


Postfix SMTP authentication security hole

How can I prevent Postfix from accepting mail from domains it owns, that it didn’t send?


Access CIFS share through another server


Pause cronjobs for an account (WHM/cpanel)

Why is my crontab not working, and how can I troubleshoot it?


Cronjob doesn't run. Similar cronjob does run. Issue with Env Vars??? Fedora involved. psql involved


cronjob error "/bin/sh: /path/to/file: No such file or directory"


MySQL server crashes weekly for over a year on Ubuntu with error log entries


How do I create alias below documentroot in apache


Poor WAMP performance when using SMB/UNC Paths


How do I start MySQL server in an Amazon AWS Elastic Beanstalk instance?


Virtual socket vs core per socket Best practise

In VMware ESXi 5.x, does it make a difference if I select 2 CPU cores vs. 2 CPU sockets?


How to log all commands run on Linux including their arguments (parameters)?

Log all commands run by admins on production servers


nginx not working on AWS Ubuntu server instance

Deploying a static site on AWS EC2/nginx: what am I doing wrong?


Is it possible to encrypt a virtual machine or container so the host is not able to read any of its data?

Is it possible to have a 100% secure virtual private server?


POSTFIX:Must issue a STARTTLS command first. Email not being send from commandline ubuntu

Postfix on Ubuntu won't send emails "No such file or directory '/etc/postfix/cacert.pem'"


How to setup apache to have overlapping virtual host wildcard server aliases?


How can I specify nameserver's port number in osx?

How is DNS lookup configured for OSX Mountain Lion?


How secure/private is full disk encryption on a VPS?


How to prevent SSL connections for some Virtual Hosts in apache

How to stop HTTPS requests for non-ssl-enabled virtual hosts from going to the first ssl-enabled virtualhost (Apache-SNI)


TCP DOS: How to terminate CLOSE_WAIT connections?


Received Notification of my server be involved in "DNS amplification attack". How can I stop?


Is Apache mod_evasive has same function as Lighttpd mod_evasive?


httpd high cpu usage slowing down server response


Defensing againt DDoS attack on Squid server


Under attack what source url source would this be?


How to stop DDOS from unique ip addresses?


DDoS attacks are killing all my services


How can I stop a currently active DDoS attack?


How to protect Lighttpd from DOS attacks and flooding?


I know how to scale my software, but how to prevent downtime because of network outages?


Run a script.sh with www-data like it was root user


Different ways to get the IP address from a Linux box

Linux: How to get a machine's IP address?


BAT file will not run from Task Scheduler but will from Command Line


Adding a random delay for a Linux command


Would upgrading my server specs make my app faster?

How do you do load testing and capacity planning for web sites?


Will upgrading to a faster server make my videos load / stream quicker for users?


How to artificially open many tcp connection on a host (testing)?

Can you help me with my capacity planning?


Nginx server static files with try_files under location


What do these disk errors in syslog mean?


PHP-FPM Primary script unknown, but SCRIPT_FILENAME is set correctly

Permission denied in vhost document root


Curl with SSL not working on ubuntu server


Is stage.*.example.com valid for a wildcard DNS CNAME?


Upgrade apache 2.4.6 to 2.4.12 on CentOS

How to maintain PCI compliance on a LAMP server when repositories don't keep up with versions


Why is my crontab not working, and how can I troubleshoot it?


Why am i getting execute binary file error?


How to pass full user name to saslauthd from postfix

Postfix + sasl method rimap strips domain name from user


DNS Service and Web Service, on the same server

Clarification of why DNS zone files require NS records


Can't get iptables working in VPS - state and conntrack not possible

Can't resolve issue: iptables: No chain/target/match by that name


A CNAME record can't be set up for the domain root

Why can't a CNAME record be used at the apex (aka root) of a domain?


Should I worry about requests that get - client denied by server configuration, apache logs

How to test if my server is vulnerable to the ShellShock bug?


Stop senseless mass-queries on DNS-server

How do I set up a "secure" open resolver?


Getting DDoSed with requests for links to other sites and Bittorrent and BingBar


AWS IIS web instances behind load balancer needs net access

VPC public subnet internet access with ELB hooked up


Prevent authentication from specific machines

Block Administrators authentication attemps from workstations


The differences between libpam-ldap and libpam-ldapd, included packages and modules?

Can I configure pam_ldap without configuring nss?


Windows RDP Server farm redirection stops working

Remote Desktop Server farm stops working


OSX 10.6.8 can't find OD users after DNS change

Network account problems with mac server OSX 10.6 Snow Leopard


A local IP address (RFC 1918) on my network that is not ... local ..

A local IP address (RFC 1918) on my network that is not … local


What firewall ports do I need to open when using FTPS?


Bit copied a disk image using the dd command to a new and bigger disk. How do expand whole LVM?

Ubuntu: Resize the root LVM(2?) partition


How to send emails and avoid them being classified as spam?


How to move S3 bucket to different location


changing filesystem format from xfs to ext4 without losing data


Assigning correct permissions on a shared web server


Mitigating spam on Linux server where all MTA's (Postifix, PHP Mail() function) etc. are disabled

How do I deal with a compromised server?


is there a way to findout about a file history (create date / create directory / moved directory ) ?


Where did dedicated.abac.net. come from in my rDNS and PTR records?


Postfix SMTP banner show multiple hostnames


How do you do load testing and capacity planning for web sites?


Unable to Telnet into port 25 on CentOS PostFix Server


how to choose server that can handle about 1 or 2 million visit of my website

Can you help me with my capacity planning?


Why is Linux reporting "free" memory strangely?


Why is my crontab not working, and how can I troubleshoot it?


Deploying a static site on AWS EC2/nginx: what am I doing wrong?


postfix doesn't work after iptables set up


Is it possible to "sudo su" using ssh in bash?

`sudo echo "bla" >> /etc/sysctl.conf` permission denied


multi-user access to windows server 2012 via Remote Desktop?

How to enable the 2 concurrent (+1 console) sessions on Windows Server 2012


How to change/disable SSH message on connect?

Override SSH message when accessed via HTTP


How to solve "The apache2 configtest failed." in ubuntu 12.04 lts

Can't access website or restart apache2 server


Is there a way to point many domain names to the same IP without repeating the IP

How can I manage all of my domains with minimal configuration?


one public IP - many sub-/domains - many local servers

Do the SSH or FTP protocols tell the server to which domain I am trying to connect?


What causes the 'Connection Refused' message?


Avoid SSL warning when certificate is issued for root domain only

Fix missing ssl-cert for subdomain www. using redirect or similar


nginx / ssl: Always redirect to one of two https subdomains

nginx: Redirect https traffic without subdomain to subdomain (non-www to www)


How do I configure mailserver SPF records under CloudFlare?

What are SPF records, and how do I configure them?


Statistical information regarding scaling ElasticSearch

Can you help me with my capacity planning?


Apache Active Workers and Hits per Second


Server becomes too slow with high traffic http requests for tracking page loads of multiple sites


How high can server load be before sendmail would not be able to function anymore


SSL is required but the server doesn't support it

Cant connect to mysql using self signed SSL certificate


No space left on device in spite partition is not 100%

No space left on device -- but there is space


Server suddenly drops in free memory, but still runs fine

Why is Linux reporting "free" memory strangely?


Why is my crontab not working, and how can I troubleshoot it?


crond: can't set groups: Operation not permitted


Postfix "header_checks" is insane for me to accomplish

postfix header_checks using regexp proper setup


How to add a secondary ip address permanently on fedora linux 25?

Persist IP address alias across reboots in CentOS/RHEL 6 using "ip" command


I can only ping a computer after the other computer pinged me before

Cannot ping over LAN until a ping is received


To connect to my server I'm forced to use iptables -F


Partial hyphenated wildcard sub domain dns records

Non-dot-wildcard (*-foo.example.com) for bind?


can't access web site with same name as AD domain name

My public website name and AD domain name are the same. How can I get to my external website from inside my network?


Adding a /64 ipv6 block, only the first one works

Adding a whole IPv6 /64 block to an network interface on debian


Can I find local ssh private key from remote fingerprint?

Use a specific forwarded key from SSH-agent?


How do I map root domain to external subdomain

Why can't a CNAME record be used at the apex (aka root) of a domain?


How do I set up a "secure" open resolver?


Data Backup from aws to other cloud storage for backups if aws account get hacked

Should I worry about an Amazon AWS doomsday scenario?


Mysql crashing/restarting, InnoDB: Unable to lock ./ibdata1. Can't kill via 'stop';

Mysql crashed, dumped DB's in recovery mode. What now?


DNS hosting design - should secondary server not be spread over countries, networks etc?

Why is geo-redundant DNS necessary for small sites?


Is there software I can load on my web servers to know how much of my traffic is going to china?


Amazon EC2 firewall settings not working

What causes the 'Connection Refused' message?


Unable to access web application deployed on my Ubuntu 16.04 machine from other devices/laptops on the home LAN


ssh: connecting through localhost port 22


Nginx config can't reload. Have "bind() to 0.0.0.0:80 failed (98: Address already in use)" errors

Can't restart nginx, bind() failed (98: Address already in use)


FirewallD : Allow connections only from certain IP addresses


postfix user unknown in virtual alias table

Postfix/Dovecot - Multiple Domains and Multiple Linux Accounts


Trouble installing CentOS 7 on HP Dl120 Gen9 using RAID controller

Install CentOS 7 on HP dl120 gen9 server with b140i raid controller


https works on webmin but not on domain name


Haproxy: how to configure backend to talk with a https server?

HAProxy to terminate SSL also send SSL to backend server


Linux process killed even though enough memory available

How to get the Linux OOM killer to not kill my process?


Is it possible to run ntpd with a time that is intentionally distinct from system time?

NTP synchronized clock alongside the system clock


Comparison about security between file layout and object layout of pNFS

Advantages and disadvantages of each type of layout in pNFS


Comparison between performance of block layout, file layout and object layout of pNFS


Group Policy Objects stopped applying to most security groups

GPOs fail to apply; reason: Inaccessible, Empty, or Disabled; Server 2012 R2 and Windows 10


Postfix Virtual Domain - mail is send by second server


RDP Server - Last Logon Time of All RDP Users

Last Logon Time of All Users - RDP server not on a domain


mod_pagespeed : install earlier version compatible with libc6 2.13 (Debian Wheezy)


Failed to get D-Bus connection: connection refused

failed to get D-Bus connection: Operation not permitted


What tool do you use to monitor your servers?


Best way to monitor ubuntu desktop machine


What's the best way of handling permissions for Apache 2's user www-data in /var/www?


OpenSSL: --keyout option: create .key or .key.pem files?

What is a Pem file and how does it differ from other OpenSSL Generated Key File Formats?


Increasing the maximum amount of open files for libvirt


How can I install a linux distribution without display?


Wireshark won't pick up packets sent from localhost to localhost via network

Is there a way to get wireshark to capture packets sent from/to localhost on Windows?


Why is Yahoo blocking our email address verifications and bouncing them back

How to send emails and avoid them being classified as spam?


Emails from server going to junk/spam in Outlook and Gmail


Gmail blocking e-mail from my personal domain


Server being used to send spam mail. How do I investigate?

postfix sending mails to unknown addresses


Apache2 virtualhost configuration trouble

One VirtualHost for certain URLs, another VirtualHost for all other URLs in Apache


ec2-amazon instance can be accessed from outside avaibility zone?


Configure Bind9 master zone to accept all third levels of domain

Best way to add a DNS wildcard record for a domain


Using pattern matching to reduce IP Spoofing

Practical way to implement prevention of IP Spoofing


Security against IP spoofing without consulting network administrator


rsync ESXI 5.5 out of memory in receive_sums

Why don't people just use rsync to back up vmware guests?


how to help 2 devices share local ports behind firewall through a ssh server with ssh reverse tunnel port forwarding

ssh reverse tunnel port forwarding connection fails


Windows DNS clients can't update PTR records, but can update A records (not ACLs)

Reverse DNS records not registered when using DHCP


Add my User to www-data group on fedora?

What's the best way of handling permissions for Apache 2's user www-data in /var/www?


Check all domains served by a DNS server

Finding all domains registered in a nameserver


How to tell if a public SSH key has a passphrase


Should I ever do "sudo apt-get dist-upgrade" on a mission critical server?

Can someone clarify Ubuntu (Debian) dist-upgrade for me?


Configure Ubuntu 12.04 LTS for Sending Emails for/from Multiple Domains

How to send emails and avoid them being classified as spam?


Postfix configuration with DKIM to send mail from multiple domains

DKIM sign outgoing mail from any domain (with Postfix and Ubuntu)


Identify VMWare Guest from within Linux Guest

VMware Linux Server -- how can you tell if you are a vm or real hardware?


Understanding the Apache server-status page

How to understand the memory usage and load average in linux server


Disabled recursive DNS. How to configure Split DNS?

Windows Active Directory naming best practices?


Windows Server 2008 R2: *Show* all users at login screen

Windows Server 2008 R2: User account set to not show on login


Where can I find a beginner's guide to using sysprep for deploying Windows 7?


Create screen and run command without attaching


Apache SSL VirtualHosts on a single IP using UCC/SAN certificate


How to remove ourselves from nudity blacklists?

Getting a domain name off of the blacklist


Logging in as the same user multiple times in Remote Desktop Windows Server 2008


Name Server does not change my web site IP address

How long does it take for DNS records to propagate?


ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using Password:YES)

MySQL command appends '@localhost' to username


Debian as TCP-Server for Serial Port redirecting

Serial port forwarding over TCP/IP (linux server)


Google-bot trips on a perfectly normal robots.txt, then on a nonexistent robots.txt

How Can I Encourage Google to Read New robots.txt File?


install cisco VPN client on linux in place on WIN XP


iptables NAT table not matching anything

iptables port redirect not working for localhost


Removing Unnecessary Services & Packages in a MySQL Ubuntu 12.04 Server


301 permanent redirection changing URL structure

Redirect, Change URLs or Redirect HTTP to HTTPS in Apache - Everything You Ever Wanted to Know About mod_rewrite Rules but Were Afraid to Ask


alternative directory for files if not exists


mod_rewrite: Redirect https://example.com to https://sub.example.com


Apache mod_rewrite with content moved to different subdomain


What's the RewriteRule in htaccess to redirect to a different port?


Enable Apache Virtualhost Site To Only View Over SSL


Apache htaccess get subdomain and prepend it to path


Apache2 mod_rewrite redirect all except one folder


redirect all subdomains from http to https


Rewrite only if Image don't exists with .htaccess


Meaning of the buffers/cache line in the output of free


How can I stop a currently active DDoS attack?


Multiple servers acting like a single one with all the hardware?


How to build a single virtual machine on top of multiple computers?


Does Exchange support plussed users (e.g. myname+spam@example.com) or a similar mechanism?

Does Exchange support disposable e-mail addresses?


Mysql - Access denied for user 'root'@'x.x.x.x'

MySQL command appends '@localhost' to username


RewriteCond not matching on my IP when matching on %{REMOTE_ADDR}

Redirect, Change URLs or Redirect HTTP to HTTPS in Apache - Everything You Ever Wanted to Know About mod_rewrite Rules but Were Afraid to Ask


Redirect automatically to subdirectory and also remove www


apache redirect only root slash homepage


redirect www to http AND root to subdirectory in .htaccess


How do I make RewriteCond %{HTTP_COOKIE} match a cookie value exactly?


mod_rewrite "Request exceeded the limit of 10 internal redirects due to probable configuration error."


Can you help me with my software licensing issue?


How to immediately (temporarily) install a Windows Server 2012 R2 Foundation and upgrade later to the ROK version?


How Do I Identify Between Legal and Pirated Version of The Softwares


What permissions should I give to CA Bundle file?

What Should be the Permissions of Apache SSL Directory, Certificate, and Key?


12.04LTS - could not open a connection to your authentication agent

How to fix "Could not open a connection to your authentication agent." error when trying to add ssh-key?


Nginx: How To Completely Disable Request Body Buffering

nginx - client request body is buffered to a temporary file


Send authenticated mail without editing DNS records

Email authentication without modifying DNS records


prevent from ddos attacks with nginx and apache (and haproxy?)


Fail2Ban to block IPs that request the same URL repeatedly


ESXi server under DoS attack, can I use SSH to determine where from?


Gmail does not accept mail from a new server


Search ec2 instance by its name from aws command line tool


Amazon web service visibility restriction to instances under same account

Restrict the visibility of EC2 instances using IAM accounts


Monday morning mistake: sudo rm -rf --no-preserve-root /


How works the NS record definition in DNS section at CloudFlare?

What is the role of NS records at the apex of a DNS domain?


Role of Authoritative NS record in bind9 compared with Non-Authoritative NS record in Registrar


Multiple IPv6 addresses added to interface, now IPv6 not working on my server

Adding a whole IPv6 /64 block to an network interface on debian


Wordpress + PHP+ apache +mysql, mysql crash every 1/ month

MySQL shutting down without warning, out of memory?


Either all Options must start with + or -, or no Option may


Swapping older Samsung Enterprise SSD for Consumer SSD (EVO 850) in Dell PowerEdge R820 server in RAID 5 configuration?

What are the differences between consumer grade SSDs and the much more expensive enterprise SSDs?


Postfix - How to prevent external clients from using my server as a relay?


When does a Debian server require restart?

How can I know if reboot is required after update?


configure a PAM module to be required for all but certain users for which it should be sufficient

Use more complex AND/OR structure with PAM


Is it possible to use subjectAltName with one word domains?

Wildcard certificates with short hostnames?


First request after a while always slow - ASP.NET MVC / IIS 8.5 / Windows Server 2012 R2 VPS


Understanding domain registration and dns lookup

How do registrars register authoritative name servers with root name servers?


Using chkconfig to implement auto-start on RHEL7?

What's the easiest way to make my old init script work in systemd?


Windows domain - remove Win 10 Offer via GP

Registry key / GPO to disable and block Windows 10 upgrade?


Run out of space when copying between similar XFS systems

Unable to create files on large XFS filesystem


Is it possible to create a VPN link between AZURE VNET and AWS VPC?


What causes the 'Connection Refused' message?


How to enable ssh on startup in opensuse


bad ownership or modes for chroot directory "/var/www"

fatal: bad ownership or modes for chroot directory component "/" in SFTP


Windows Server 2012 R2 and Visual Studio 2015 Community


Nginx - Redirect a bunch of domains to a single domain, with SSL

apache2 https redirect to http without ssl cert


Ways to use PHP 5 and 7 parallel on same LAMP Installation

How to allow to change php version via .htaccess in Apache?


Optimize webserver to handle huge load spikes

Optimize application to handle huge spikes


Domain controller failed on domain, how do I remove it?

Domain Controller etiquette after a crash between Server 2003 & Server 2008


What tool do you use to monitor your servers?


Change Mozilla settings globally on internal network

Using Firefox in Windows Domain Environment?


What is "anycast" and how is it helpful?


Is there a name based virtual host SSH reverse proxy?


How to deny a specific user to reboot or shut down with sudo

Editing sudoers file to restrict a user's commands


How to send emails and avoid them being classified as spam?


Mail is marked as spam by gmail - no idea, why


Can 192.168.20.4/24 describe a network or only a host?


How should I configure subdomain MX / DNS entries?

How should I setup separate MX records for a subdomain?


Locally route traffic from DMZ-server to firewall's public IP address

Loopback to forwarded Public IP address from local network - Hairpin NAT


Cisco static NAT not working on LAN side


Why can my servers not access their own addresses?


I can load an IIS hosted website via the Internet but not locally


Is setting up private server for websites faster?


nginx: redirecting to SSL based on the original request URL (not $server_name)

In Nginx, how can I rewrite all http requests to https while maintaining sub-domain?


Postfix -- auto blacklist senders who send to 'honeypot' email addresses


Is it possible to have multiple domain which point to a server with different ports?

How to use DNS/Hostnames or Other ways to resolve to a specific IP:Port


Is there a way to copy over the ssh passwordless authentication to a new RHEL linux server w/o being prompted on the initial login?


Disable to receive address from dhcpd for one host/mac

How to ignore a set of Mac addresses in dhcpd.conf?


Simple DNS Modifications, Directing to CDN


How do I deal with a compromised server?


Attempted hack on VPS, how to protect in future, what were they trying to do?


My Ubuntu webserver serves the wrong content


How can I know how an email account was breached?


Can someone explain the physical architecture of RAID 10 in complete layman's terms?

What are the different widely used RAID levels and when should I consider them?


How do you do load testing and capacity planning for web sites?


does file download using PHP, causes server/CPU overload?


How can I optimize my web server to run MyBB faster?


Is a Rackspace Cloud Server right for me?


root directory permissions changed to 777 by mistake whats now?


Is there a standard for multiple DHCP servers?

Can I have multiple DHCP servers on one network?


which of these two servers are likely to do better under heavy http load?

Can you help me with my capacity planning?


Development DB server with dedicated hardware


Hardware requirement for video serving to 400 concurrent users


max_connections for 8GB RAM and shared server


How to determine approximate maximum number of requests?


Allow user accounts to be a local administrator on a specific computer

Automatically make user local administrator on their computer through GPO?


Why are newly-created files under /root not executable even though /root is and umask is 022? Is this the default on CentOS?


Installing and maintaining software on multiple Linux servers

How to manage enterprise network of Linux machines?


Multi-level wildcard DNS matched by *.domain.com?


The cache is getting at full level so fast

Why is Linux reporting "free" memory strangely?


Why is my crontab not working, and how can I troubleshoot it?


Apache presents wrong certificate when accessed via load balancer

Multiple SSL domains on the same IP address and same port?


consequences of disabling 'The WinHTTP Web Proxy Auto-Discovery Service '

Can I safely disable WinHttpAutoProxySvc if I don't have a proxy?


Add remote host to known_hosts file without prompt

Can I automatically add a new host to known_hosts?


Rewrite sender when relaying to provider server

Forcing the from address when postfix relays over smtp


Securing SSH server against bruteforcing


delete millions of files within a directory

rm on a directory with millions of files


How to check what application is requesting port?

How I can identify which process is making UDP traffic on Linux?


IP Based certificate for HTTPS - is it possible?

SSL certificate for a public IP address?


How to use parts of the old URL in a 301 redirect

Redirect, Change URLs or Redirect HTTP to HTTPS in Apache - Everything You Ever Wanted to Know About mod_rewrite Rules but Were Afraid to Ask


Redirect all traffic to https apart from a single URL with Apache


Htaccess redirect all traffic https, except mobile. And rewrite to non-www


apache mod_rewrite scenario subdomain capturing from the http_host and passing it as subdomain to other url while rewriting it


Redirection of http to https not working


Apache Rewrite specific domains to subdomain


Apache URL Rewrite /client/client to /client


Apple OSX with JVM support (or any virtual machine)

Can you help me with my software licensing issue?


Can I transfer/Migrate Windows server 2003 RDS cals to Windows Server 2012 R2?


VMware licnesing for vdi and server virtualisation


What are you allowed to run on a Free Hyper-V 2012 host?


Do I need a User CAL for a record in AD if the user is not authenticating?


What scenarios would prevent users from accessing Office 365 products?


Redhat High Availability Add-On on Centos 5.8


Legality of custom windows installation discs


Block All Ips from editing files on server

How do I deal with a compromised server?


Wordpress + postfix + unsolicited emails being sent even if the email account wasn't created


How to find out where mystery SPAM scripts are coming from?


How do I remove 1 line of code from PHP files containing a specific string?


High outbound network traffic on Tomcat under process nodeJR


Helpful linux command for do some forensic on compromised linux web server


Do I need a firewall if the service doesn't listen on all interfaces?

Why would I need a firewall if my server is well configured?


establish passwordless login without asking the user

How to automate SSH login with password?


SSH through another machine at work to an external server


A domain I've never heard of resolves to my website

Apache: Scammers point dozens of domain names at my dedicated IP. How to prevent this?


How do I find all domain names that are CNAME aliased to given domain name?


CentOS keeps losing its localtime setting?


htcacheclean doesn't seem to be cleaning the cache

Apache's htcacheclean doesn't scale: How to tame a huge Apache disk_cache?


What are the different widely used RAID levels and when should I consider them?


Best Practices in Username Standards: Avoiding Problems


How do you do load testing and capacity planning for web sites?


Can Apache Web Server handle up to 100,000 concurrent connections?


Create Unix Named Socket from the Command Line


How to configure cron job to run every 2 days at 11PM

Why is my crontab not working, and how can I troubleshoot it?


WAMP different sites on different ports accessible on LAN


How does ServerName and ServerAlias work?


How do I drop "empty" HTTP packets using iptables?


DDoS Protection Services - are they good enough?


Distributed web server to stop DDos attacks?


Outlook for Mac, Active Directory DNS and DDOS


Is mod_evasive the best prevention to DDOS attack


Block direct IP connections to Apache web server

Apache accepting requests to other servers?


how to check if an update will restart a service

How can I know if reboot is required after update?


Do the SSH or FTP protocols tell the server to which domain I am trying to connect?


PowerDNS : Respond differently based on Client IP address


Apache not running - "refused to connect" error

What causes the 'Connection Refused' message?


debugging "connection refused" in AWS EC2 ubuntu server


Do AWS Reserved Instances need to be assigned to the instance?


Apache hogs cpu, most connections in waiting status

Godaddy dedicated server randomly timeout users on just 400-500 Active users


Can you help me with my software licensing issue?


How do I stop SPAM from being sent from my server?

How do I deal with a compromised server?


How to stop server sending spam out. Centos server with exim


Multiple pearl processess all hitting one IP address DDOS source hack?


Server being hacked with lots of weird process


Diagnosing an alleged trojan reported by ClamAV


Server compromised, how deep is the intrusion when PHP files are changed in folder without write permissions


MySQL - Why are there three root users with different hosts?

MySQL log shows 3 root users, 2 without passwords? Why?


Intermediate certificate not sent to clients?

IIS7 Not sending Intermediate SSL Certificate


How can I get a report of all MAC addresses nearby?

how to find out mac addresses of all machines on network


How to set up a fallback error page in nginx?


What options exist for changing usernames transparently in Webmail?

Dovecot user lookup fails when using username@domain format


How to correct Dovecot user login to use full domain email in this format "myuser@mydomain.com"


Can I set a CNAME to point to the CNAME of a separate domain


Dump all DB with Bash Script in separate files


Configuring RAID in HP Proliant ML350e Gen8

What are the different widely used RAID levels and when should I consider them?


What are the system requirements for a server running an ASP.NET MVC 5 application

How do you do load testing and capacity planning for web sites?


What permissions should my website files/folders have on a Linux webserver?


Nginx includes config files not in order?


Memory on dedicated server is filled out


What are SPF records, and how do I configure them?


What do the + signs do in these DNS TXT records?


enom spf record for mailjet smtp service will not save include:spf.mailjet.com


Why is my server using swap even though there is lots of RAM available?

Swap 95%+ , but a lot of free ram memory


What kind of hardware do I need to run a phpBB 3 server for a large community?

Can you help me with my capacity planning?


I did 'ifdown eth0' and...I can't connect my instance

I accidentaly forbid SSH connection to a remote server... What's next?


OpenShift: MySQL PDO 'connection refused', works locally

What causes the 'Connection Refused' message?


How can you prevent X-Forwarded-For spoofing on haproxy?

prevent X-Forwarded-For spoofing in haproxy


certbot creates a certificate with "wwww" instead of a bare domain one - unlike before

Certbot misbehaves by creating a certificate for a domain with "www"


You don't have permission to access when to set two name-based web sites on a single IP address in apache


Using Administrator Credentials to login as a User to Their Desktop

Is there an equivalent of SU for Windows


ssh: transparent redirect of incoming connections based on host- or username

Is there a name based virtual host SSH reverse proxy?


Avoid logging of certain missing files into the Apache2 error log


Trying to inject javascript to every page

How to inject HTML code into every delivered HTML page?


How to send emails and avoid them being classified as spam?


First and last IP address of the network 192.168.176.0/23 (subnet 23)


Special characters in mysql password using mysqldump

mysqldump prompting for password in shellscript


What type of SSL certificate I need to create CA?

Can I be my own trusted CA via an signed intermediate certificate?


Linux soft RAID6 how to identify last failing drive

Physically Identify the failed hard drive


Defining the email address which Nagios sends emails from


Network request going from which IP address

Finding the Public IP address in a shell script


The security database on the server does not have a computer account for this workstation trust relationship. Error in 1 PC


Someone's DNS is pointing to my IP. What are my options?

Another domain name pointing to my server IP?


How do I configure a naked domain and a mail server to a cloud hosted app?


User/group - folders mapping on Windows SBS 2008


Linux: How to get a machine's IP address?

How can I display the IP address of an interface?


Sometimes PowerShell stops sending output until I press enter. Why?


Redirect, Change URLs or Redirect HTTP to HTTPS in Apache - Everything You Ever Wanted to Know About mod_rewrite Rules but Were Afraid to Ask


Apache mod_rewrite : RewriteRule to pass requests tomcat application


Execute command on LINUX via PUTTY from Windows


How much resources does MySQL (MariaDB) use vs. Apache/PHP-FPM on my server?

What tool do you use to monitor your servers?


Email, forwarded by procmail, rejected by Gmail

How to send emails and avoid them being classified as spam?


Emails going to spam - Gmail / Hotmail / Outlook?


How can I DNAT a packet coming through a bridge back to its source with iptables?

Loopback to forwarded Public IP address from local network - Hairpin NAT


How to disable plain FTP with proftp and xinetd?


Advice on management of large MySQL database

Modifying columns of very large mysql tables with little or no downtime


Can't apply SELinux file context to paths with symlinks

How do I assign an SELinux label to a symlink with semanage so it persists after a relabel?


Find source of outgoing traffic to specific UDP port

How I can identify which process is making UDP traffic on Linux?


Apache Virtual Host (CSS & Javascript not being found)

Redirect, Change URLs or Redirect HTTP to HTTPS in Apache - Everything You Ever Wanted to Know About mod_rewrite Rules but Were Afraid to Ask


Can you help me with my software licensing issue?


How do I deal with a compromised server?


Our server is launching brute force attacks on other websites, please advise


Monitor outgoing web traffic sources on CentOS


Centos Server with Apache hacked - Removed files but still showing compromised by Google


Block specfic port for the access of the application from outside with impacting the access to local host scripts


Serve a static page if the backend is down

Apache reverse proxy error page when proxied server is down


Find the used hard disk data and solve disk pressure

Disk full, du tells different. How to further investigate?


PHP files downloading instead of executing

PHP file gets download instead of getting executed when browsed in any browser


Run shell script from Apache conf or at Apache (re)start


Forward from Apache to nginx listening on different port

How do you run Nginx on port 8080 and Apache on port 80 on the same box?


Postfix can't send email reporting mail "Exceeded Mail Size Limit"

Changing the maximum mail size in Postfix


What are the different widely used RAID levels and when should I consider them?


How best to utilize two SSD disks on VPS webserver


How do you do load testing and capacity planning for web sites?


For php webserver, what is faster, 1x 24-core server or 3x 8-core servers?


SRV record does not work, doesn't redirect to another port


Apache server config redirect from IP to domain name EC2

Redirect, Change URLs or Redirect HTTP to HTTPS in Apache - Everything You Ever Wanted to Know About mod_rewrite Rules but Were Afraid to Ask


Unable to combine RewriteRule and Header set


Apache Rewrite of HTTPS on another specific port with hidden subdirectory


How to redirect a sub-directory to the root


How do I remove index.php from url in CodeIgniter 2.2


Redirect domain to specific URL on other domain


.htaccess rewrite rule, extract number to query variable


http to https including www 301 redirect


Apache24 - force https except specific IP


Does Windows Server 2012 R2 OEM require different install media?

Can you help me with my software licensing issue?


Microsoft IUR - Internal useage rights licence


Transfer physical Windows Server 2008R2 licence to Hyper-V server


Server is sending spam every 5 minutes - can't find task/cron causing this

How do I deal with a compromised server?


Someone made subdomains mysite.com/bellagio without my permission and I cannot remove it


Why is this server generating outbound IRC connections?


Exploit PHP File Found in /tmp directory


Permissions set to 555. How can another user modify the files?


Can I have multiple DHCP servers on one network?


How to properly set TXT SPF record when separating A from MX records

What are SPF records, and how do I configure them?


Why does the MXtoolbox SPF record checker not like my SPF record?


Multiple SPF records for multiple domains


Spf passes or fails depending on receiver address


DNS Records move web server keeping Email server as is

How do I move my website to a new server without interruption to email?


AWS Free Tier Ending,How to make the resources reserved , rather than paying pay-as-you-go prices

Amazon EC2 Move On Demand instance to Reserved


localhost webserver vs separate server for small office

Can you help me with my capacity planning?


Video hosting: Host files on web server, storage server, NAS?


What are the performance implications of Hyper-threading for single Nehalem+ CPU?


Choosing EC2 instance for image processing


Domain Controller's DNS NIC configuration

What should the order of DNS servers be for an AD Domain Controller and Why?


What is Active Directory Domain Services and how does it work?


Basic DNSSEC configuration under BIND 9.7?


How does one backup / restore Group Policies on Windows Server 2008 R2?

What is Group Policy and how does it work?


Project Honeypot says my mail server has become a spammer

Fighting Spam - What can I do as an: Email Administrator, Domain Owner, or User?


How to log on MySQL on CentOS 6.3 using root account from the domain and not localhost?


How do I use NGINX as a frontend for a Legacy (Apache) Webserver


Multiple Child domain under a single Forest

How to hide a trusted domain in the logon screen?


Linux meminfo "Buffers" takes more than 10% total memory?

Why is Linux reporting "free" memory strangely?


Why is my crontab not working, and how can I troubleshoot it?


Redirect non-www requests to www on Amazon Route 53

How do I redirect www to non-www in Route53?


Must CSRs be generated on the server that will host the SSL certificate?


Someone tried to access a list of hundreds of standard website urls in a go, is it a cause of concern

Are these malicious requests in my apache access log?


How to add entry for primary and secondary intermediate cert in ssl apache

installing SSL certs on apache ... what certs to use?


Apche2 multiple ssl configuration not working

Two domains (when SSL) on same directory


iptables connection limit does not work on debian


Connection refused error while accessing my server with AWS elastic IP

What causes the 'Connection Refused' message?


Failed to open a port in my ubuntu machine


Why isn't my EC2 Instance online after reboot?


ECONNREFUSED - Connection refused by server PROFTPD


How can I schedule gcloud tasks in Windows Task Scheduler?

Running a Batch File from Task Scheduler Without User being logged In


How to store Cloudflare IP as an additional FastCGI parameter in Nginx?

How to log original value of $remote_addr when using Real-IP


Linux Hosting: What is the purpose of setting hostname/FQDN in hosts file?


Two physical web servers on port 80 behind a router


redirect https://www.example.com to https://example.com in nginx

Redirecting www to non-www (apache, letsencrypt )


Server 2012 R2 - Sharing 'cluster shared volume' .VHDX hard drives between two VMs, are they supposed to not live update?


create an array of dates in bash scripts and match it with current date

How to compare today's date against an array of dates


Internal network DNS can't be configed to route domain.com to www.domain.com?

what are the implications of running a FQDN as internal AD domain and point A-record for website to different host?


What changes with Kerberos Authentication in IPv6 when using NAT?

What changes with Kerberos authentication in IPv6 when everyone has a public IPv6 Address?


linux redhat + login prompt keep getting again and again

linux + when change passwd we get permission denied


Wireless Client (Laptop) unable to connect to domain (windows server)


Unable to query DKIM because of DNS timeout

Azure DNS does not lookup SPF policies for certain domains


What do you use to monitor and deploy linux config files?

What tool do you recommend to track changes on a Linux/Unix server


Building vs buying a server for an academic lab

Rack Mount Servers - Build them or Buy them?


How to generate a pem certificate? in an easy way, for testing

Generate self signed SSL certificate for apache


Can I nohup/screen an already-started process?


SPF softfail even when set seemingly correctly

How to send emails and avoid them being classified as spam?


Email Deliverability on Yahoo is very poor. Any suggestions please?


Is there any difference between CIDR & VLSM?


Windows server does not serve .plist and .ipa files

How to serve unknown file types from IIS 7


Cannot browse website from web server local network

Loopback to forwarded Public IP address from local network - Hairpin NAT


How to access server using public ip when in the network itself?


How do I access my WAN IP internally according to my existing iptables port forwarding rules?


Will adding CPU cores or RAM to my cloud server improve speed in my situation?

Can you help me with my capacity planning?


Minimum hardware requirements for ElasticSearch in docker


Which memory settings to use for this MySQL server?