So far we have covered in great detail the main files required for the firewall.cx domain. These files, which we named db.firewall.cx and db.192.168.0, de…

What exactly is a firewall? As in the non-computer world, a firewall acts as a physical barrier to prevent fires from spreading. In the computer world too…

Different Linux systems can be used in many ways. This is the main idea behind operating different services at different operating levels. For example, th…

When you are using Vim, you want to know three things - getting in, moving about and getting out. Of course, while doing these three basic operations, you…