minifirewall is shellscripts for easy firewalling on a standalone server we used netfilter/iptables http://netfilter.org/ designed for recent Linux kernel See https://forge.evolix.org/projects/minifirewall
- download minifirewall and minifirewall.conf
- copy minifirewall.conf in /etc (for Debian, use /etc/default/minifirewall) and configure it
- start / stop with : minifirewall start / minifirewall stop