18.9.2. Useful Websites
18.9.2. Useful Websites http://www.netfilter.org/ - The official homepage of the Netfilter and iptables project. http://www.tldp.org/ - The Linux Documentation Project contains several useful guides relating to firewall creation and administration. http://www.iana.org/assignments/port-numbers - The official list of registered and common service ports as assigned by the Internet Assigned Numbers Authority.