Rc.firewall is an ipchains based firewall setup script with easy support for many network services, masquerading, port forwarding, and IP accounting. Protections include spoofing, stuffed routing / masqerading, DoS, smurf attacks, outgoing port scans, and much more.
You can download it from the following link: https://packetstormsecurity.com/files/download/23538/rcf-5.0.1.tar.gz
Source: https://packetstormsecurity.com/files/23538/rcf-5.0.1.tar.gz.html