Originally Posted by baronobeefdip
firewalls are too complex to teach in a simple manner, even examples of ruleset files can be overwhelming so your best bet is to read some manpages, literature and do some experimenting, (within a virtual environment I would reccomend, vmware and virtualbox are nice make sure it's a host-only network) also try exploring other firewalls such as pf (bsd wall but the sourcecode can be salvaged to be made to work in linux if i'm not mistaken but i haven't been able to find the souce code for pf as of now) and ipcop
Oh, I am sure about that. Ya, it is a complex subject.
But I am just hoping to become more familiar and a bit more comfortable.
I believe I can learn anything that I like to learn about.