SekHost is a host based firewall and packet prioritization utility for Linux systems. The configuration is simple yet powerful functionality is available.
Installation of sekhost is very straightforward and actually only requires 2 things;
the sekhost script itself, which is in the src directory a configuration file. (examples in ./doc/examples) name your config file either /etc/default/sekhost or /etc/sekhost.conf
and you are ready to go!
You will find an interactive configuration option (sekhost configure).
After testing, you will want sekhost to start automatically on boot, so you will need to link it into the appropriate init level start up scripts.
A man page and a full Configuration doc file are in ./doc.