Feather Linux for Firewalls
"The firewall infrastructure of GNU/Linux consists of two parts, the kernel (netfilter) and the configuration structure (iptables). In order to build a firewall structure in GNU/Linux, you first need the proper netfilter support, which almost every Linux distribution includes by default. The second part is the set of rules that govern the packets (traffic) to be let in and the packets to deny."
(Submitted by Noel Tue Feb 15, 2005 )
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