This is a good article that explains about various types of firewalling: http://www.webhostgear.com/37_print.html -Sietse ________________________________ From: netfilter-bounces@xxxxxxxxxxxxxxxxxxx on behalf of Kaushal Shriyan Sent: Tue 25-Jul-06 7:48 To: netfilter@xxxxxxxxxxxxxxxxxxx Subject: stateless and stateful packet filtering Hi ALL I went through http://www.netfilter.org <http://www.netfilter.org/> , I did not understood the below Main Features stateless packet filtering (IPv4 and IPv6) stateful packet filtering (IPv4) What can I do with netfilter/iptables? build internet firewalls based on stateless and stateful packet filtering Thanks and Regards Kaushal