I'm using a system with several Snorts to detect intrusion packets to
a network. there i need to set 6 bits in the tcp stack in order to
identify suspicious packets from other packets. But I still couldn't
find a way to edit the tcp header. need to set option bits and clear
them when enter in to the LAN.

On the other hand can any one help me to find a way to communicate
IPTABLES and Snort to do the packet forwarding.

Please help me.

Thank you guys.