There's a number of diagrams around the Internet illustrating the path 
packets take through the Linux kernel, including the various firewall 
modules, that's quite helpful in understanding which rules should go in 
which table.

Here's one that's not bad:

<http://www.linuxhomenetworking.com/wiki/index.php/Quick_HOWTO_:_Ch14_:_Linux_Firewalls_Using_iptables#Figure_14-1_Iptables_Packet_Flow_Diagram>

The box labeled "Local Processing of Data" is where packets that are 
created by the firewall's applications originate.

Does anyone have a better diagram? How about one that shows the policy 
routing system?
_______________________________________________
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Reply via email to