Since I don't know what exactly I'm writing at this post, please don't take me too seriously (any better sentence in english?) about the following:
Since there's no firewall application in SalixOS, in my view, at least...
Simple firewall
This is a very simple firewall I was once taught by my friend Fabio. Just copy these lines in a blank file, make it executable, and have it executed some time during your init process. My favorite way is to add this in /etc/network/interfaces:
I've been meaning to spend some time learning how to use iptables properly. I've started reading this tutorial and IMO the best firewall package I can fine is Shorewall (but it's not exactly simple), I've made a slkbuild for it here.
You can find sample configuration files in "/usr/share/doc/shorewall-4.4.12/Samples" (the default location, usually), for one, two, or three network interfaces. Greetings,