I have two iptable rules for userspace modification : iptable -t mangle -A
PREROUTING -p udp --dport 9090 -j NFQUEUE iptable -t mangle -A OUTPUT -p udp
--sport 9090 -j NFQUEUE I have the following network setup: client
---------------->Linux Box or router--------------------->server. What i'm
trying to achieve is modifying all packets which comes from client to 9090 port
of the Linux Box. Also which packets will go from Linux Box to client. I do not
want to manipulate both from or to the server. So the rules i need will work
like this: If packet comes from client to port 9090 i will modify it. Now the
router opens symmetric port when it communicates with the server. That means it
opens 9090 port when it communicates with the server and hence get modified by
the second rule(--sport 9090). I want to avoid this. The rules will be like
this: 1.If packet comes from a specific ip block i will accept it. then i will
queue the remaining packets based on the destination port it comes to. 2.If
packet goes to a specific ip block i will forward it. I will queue the
remaining packets based on the source port information. Thanks in advance.
With Best Regards
Ariful Hossain Tuhin
email: 1. etothepowe...@gmail.com 2. etothepowe...@hotmail.com
3.etothepowe...@yahoo.com
skype: freeburn1986
