15. Some interesting links

1. iptables-1.2.6 by Paul Russell .

2. Linux netfilter Hacking HOWTO by Paul Russell .

3. iproute2 by Alexey Kuznetsov .

4. Advance routing Linux HOWTO .

5. HTB queueing discipline implementation by Martin Devera .

6. Linux-Advance Networking Overview by Saravanan Radhakrishnan .

7. monitor.pl by Stef Coene .

8. netcat by Hobbit .