libipq links for working with iptables in linux

http://www.eecs.harvard.edu/cs143/pa3/

http://www.crhc.uiuc.edu/~grier/projects/libipq.html

http://lists.netfilter.org/pipermail/netfilter-devel/2005-February/018631.html

TCP syn attack
http://www.networkdictionary.com/security/TCPSYNAttack.php?PHPSESSID=c2a79111d168faf

Summary of the netfilter developer workshop 2004

Harald Welte

http://www.netfilter.org/documentation/conferences/nf-workshop-2004-summary.html

Linux netfilter Hacking HOWTO

Linux 2.4 NAT HOWTO

Netfilter Extensions HOWTO

Rusty's Unreliable Guide To Kernel Hacking

IP Tables Tutorial

IP Table Source Code

NetFilter Wiki

Rusty's Remarkably Unreliable Guides

Unreliable Guide To Hacking The Linux Kernel

Unreliable Guide To Locking

IPTable extension writing tutorial

netfilter module example