Installing Firewall using csf(ConfigServer Security & Firewall) on DirectAdmin
CSF is SPI iptables firewall that is comprehensive, straight-forward, easy and flexible to configure
It is very easy to install in DirectAdmin and very easy to setup your iptables without complicated settings.
Here is the command that I use while installing csf in the shell
rm -fv csf.tgz
tar -xzf csf.tgz