What is RCF (rc.firewall)?
RCF (AKA rc.firewall) is an ipchains-based firewall with support for over 50 network services (including vtun, DHCP, NFS, SMB, napster, proxies, online games, etc.), masquerading, port forwarding, and IP accounting. All services are self-contained modules which can be prioritized easily in the ipchains stack. Protections include spoofing, stuffed routing/masqerading, DoS, smurf attacks, outgoing port scans, and many more. RCF also supports multiple public, private (masqu’ed), dmz, and mz (non-masqu’ed) networks and interfaces. Access rules are defined per interface and dmz/mz server groups.