Category: Technical Support

The dig command is a command that is used for querying DNS name servers for information about host addresses, mail exchanges, name servers, and related information.

The find command is a wonderfully useful tool that allows you to find files or folders by searching for them in multiple ways.

What is APF?

Advanced Policy Firewall, or APF, is a firewall sometimes seen on Liquid Web’s servers. It is basically an interface to iptables, which is the standard interface to managing network ports on Linux machines. Interacting with iptables can be complex and error-prone, and APF greatly simplifies working with it. However, APF is still only accessible by ssh. There is no way to make changes in APF through WHM or cPanel.

Another security measure you can take to lock down a Linux server is to disable the root user login in the SSH server.

One of the simplest and most effective ways of controlling the flow of spam on your server is to enable RBLs for your mail program.  RBL stands for Remote Black List.

The default Apache settings that your fully managed VPS or dedicated server cPanel sets upon install are definitely something that can be improved on. With a few small tweaks, the efficiency with which Apache runs with can be greatly improved.