programming linux firewall.

hello
can anyone please let me know good resources for programming a packet filtering firewall using c/c++ for linux?
or maybe anybooks that might be a good help.
or code examples??
Thank You in advance
cheers
D-AGGARWALAsked:
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str_ekConnect With a Mentor Commented:
i think that best refference is here an orginal iptables, netfilter, ipchains and ipfwadm

http://www.netfilter.org/ - netfilter nad iptables home... well a gateway to linux firewall developing community :)

now some legeacy, but less complicated example
http://people.netfilter.org/~rusty/ipchains/ - less info, cos it's like an abondon project... well you wanna code a linux fwall, so you shorely know all the stuff..
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str_ekCommented:
and there is this
http://www.private.org.il/tcpip_rl.html
great site i just run into...

a complete tcp/ip (and about) refferences bible :)

have fun digging it up ;)
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