Local: Firewalling  

Linux: Firewalling - Kernel 2.4.x

Version: 0.05 from 2001-09-22
Copyright 2001 by Peter Bieringer <pb@bieringer.de>, original site of publishing: http://www.bieringer.de/linux/firewall/
Unlimited non-commercial distribution of this document in its entirety is encouraged - please contact the author prior to commercial publication.

Suggestions, comments and improvements are welcome!

Warning: The given script are perhaps not free of bugs and therefore I can give no warranty for protection - check system with nmap from all sides to verify protection!


Changes to

Common hints


There are 2 issues which are important to know

netfilter - IPv4 firewalling

Differences to kernel 2.2.x (ipchains)

More information coming next.

netfilter6 - IPv6 firewalling

This howto is moved to the Linux-IPv6-HowTo Part 8.

List of links

Netfilter homepage

Credits to

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