(ASCEND) P75 Nat Problem

["Simon Drummond" <sibear@intop.net>]

Summary--P75 with dedicated ISDN connection and assigned address doing NAT
cannot be seen from the outside. I know that this exposes my ignorance, but
I would appreciate any advice or assistance.

I have an office behind a P75 ( Load -- 6.0.10 ) using 192.168.X.X. The P75
was obtaining a dynamic address from our TNT--everything worked fine. The
customer then decided to go dedicated. Allocated a /30 subnet and still
everything was fine, except that the P75 cannot be seen from the outside
not sure if it was seen using the dynamic assignment ). P75 has a valid IP
208.149.79.17/30 and the Ethernet 2nd address is 192.168.9.1/24. I can get
to their network from the backside and all outgoing initiated connections
work correctly.

This is a problem as they want to host their own mail. I setup a static NAT
map to the server, but this does and will not work unless I can see the
Pipeline. The customer can send and receive mail from their foreign host.
But when we brought the host in house we ran into a wall. The server can
send mail, but cannot receive it.

Regards

Simon Drummond                    sibear@intop.net
Network Administrator             601/371-1028
http://www.INTOP.net           601/371-1639 Fax

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