Basic drawing to explain problem.
eth1 (192.168.192.1) | Linux FW | eth0 (172.17.0.1) | LAN A
My firewall has a nat for 192.168.192.1:80 to 172.17.0.10:80
From a client I can not open a session to 192.168.192.1:80. Is this because of the connection tracking or is there a way to sort this out.