ISA-PIX Back-to-Back DMZ

[cceng]

I am having a few issues with trying to get this to work. I have a configuration shown below.

Internal network> ISA> DMZ >PIX>External
(10.x.x.x) (192.x.x.x) (207.x.x.x)

I can ping my dmz clients from the internal network, including the internal interface on the PIX box (192.x.x.x). When I try to ping to external systems I get no reply back.

When I ping to external systems from my DMZ clients I get replys back.

I am guessing that I have everything configured properly on the ISA box since I can ping through it to the DMZ.

Is anyone else running this configuration that might have an idea where I am going wrong?

Thanks!

 

[cceng]

Forget this post..

I found out the issue was the route cache table on my external router.

Thanks!