[olug] how to understand IPchains

[Vincent]

puzzled wrote:
> 
>     These are the surefire steps to understanding what ipchains does
> 
>     1. read W Richard Steves TCP/IP Illustrated Volume 1
> 
>     2. read Rusty's ipchains howto
> 
>     3. go to www.freshmeat.net and get pmfirewall
> 
>     4. install pmfirewall and examine /usr/local/pmfirewall/*
> 
>     5. compare what you see in the pmfirewall config with the docs
> 
>        This is a good start to understanding what ipchains is all about.
> The Stevens book is not a light read, but TCP/IP is not a light subject. If
> you just want a working firewall pmfirewall has done me well so far.
> 
>         If you complete this and want to keep going I'd suggest you visit
> www.snort.org and pick up a copy of their intrusion detection system. Its
> not very hard to get it running and its output is *very* interesting.
> 
> ---------------------------------------------------------------------

Here's an excellent summary of how iptables/netfilter/mason and ipchains
work.  It also explains their fundamental differences and the syntax
changes.  It's a good read for everyone interested in packet
filtering...

http://www.oreilly.com/catalog/linag2/chapter/ch09.html

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