Firewall

Mandatory Firewall

All Campus Stations must have firewall configured and maintained,

ConfigServer Security and Firewall

The current default firewall on Linux is ConfigServer Security and Firewall (CSF)

Shorewall

Shorewall is a simple file wall that is no longer maintained but still being used extensively (especially behind CSF - inside system containers and virtual machines)

Easywall

Easywall is an easy to use firewall that is no longer maintained but has been popular in limited situations where maximum ease of use is required.