Dear readers, I appear to have set a Paranoid Penguin record—six months spent on one article series. (It has consisted of five installments, with a one-month break between the second and third pieces.

How to configure SSH to use a non-standard port with SELinux set to enforcing Your email has been sent Switching the SSH listening port is an easy way to help secure remote login on your Linux servers ...

Linksys routers are designed to enable multiple devices to connect to the Internet at one time, but they often offer additional features as well. Some routers include a built-in firewall that protects ...

The ufw (uncomplicated firewall) represents a serious simplification to iptables and, in the years that it’s been available, has become the default firewall on systems such as Ubuntu and Debian. And, ...

Symantec Endpoint Protection manages network access using policies. The application includes a default firewall policy that contains predefined rules to filter harmful traffic and detect suspicious ...

When you need a Linux system to have a static IP address rather than one that is set dynamically by DHCP, all that's required is some configuration changes and a restart. Follow these steps to make ...