I have a strange issue with routing through a PIX firewall. The Firewall has a number of interfaces, only three of which are involved.
I can route from the INSIDE network to the OUTSIDE with no issues. When I try to route from the DMZ to the OUTSIDE there is no connectivity. I can see the access-list counters incrementing, and have checked with a capture, to prove that traffic is entering via the DMZ interface. However a capture shows no traffic exiting via the OUTSIDE interface. However if I put an outbound access-list on the OUTSIDE interface the counters increase.
There is no NAT involved, and all interfaces have the necessary "nat 0" identity statements.
I'm stuck as to where to go from here to debug the issue. Help appreciated!!!
The PIX is running 7.0(4) software.