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Basic iptables Usage & Commands
Iptables is a program that allows you to configure Linux's built-in firewall. By default, no...
How to Check VPS Memory/RAM Usage with SSH
There are a few tools built-in to most Linux distros for gauging and fine-tuning your server's...
How to Install ConfigServer Firewall (CSF)
ConfigServer Firewall, or CSF, is a common Linux security suite. Log in to your VPS as the root...
How to List All Open/Listening Ports
If you find yourself needing to check all open/listening ports that your server is using (a...
How to Modify SSH to Use a Port Other than 22
  A simple, but very effective, step you can take to enhance your server's security is to...
How to Optimize MySQL with MySQLTuner
MySQLTuner is a script that will assess MySQL performance and recommend steps to maximize...
How to close an open DNS resolver - Linux
Locate the BIND configuration file within the operating system. The BIND configuration file is...


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