With the Payment Card Industry Security Standards Council releasing their new standards version, PCI DSS 2.0, it is important to take a look at the security of your Linux server. Since the cPanel brand control panel and Web Host Manager software is the most popular control panel for Linux servers, we will cover achieving PCI compliance on a cPanel server. In this article we will also be using a CentOS server, and the commands should be the same/similar on CentOS, RedHat Enterprise and Fedora. The information below will help you keep your cPanel server secure, and pass a PCI compliant scan.