"Everyone in the IT industry is concerned with security, especially Linux administrators. Many Linux distributions come with several services that you may not use or ever need, but they're running on your server anyways. This can cause many security threats.
"With the slightest knowledge of Linux firewalls, you can secure your Linux server very quickly and efficiently. In this article, I will either introduce you into iptables for your first time, or help you become more efficient with iptables if you've worked with them in the past..."