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New Member

Configuring PIX 501 with ISDN DialUp Connection


I'd really appreciate if someone could help me with the following scenario:

I need to configure the PIX 501 to work in the following network setup

LAN ---> PIX 501 ---> Cisco 760 ISDN Router ---> Internet

The LAN I have is very small, having 11 users on Static IPs, with a WinNT 4 server (LAN's IP range is 192.168.0.x)

The internet connection is a 128Kbps DialUp connection.

We get a Dynamic IP address from the ISP everytime there is a new connection.

How do I set up the PIX 501? and do I need to change anything on the Cisco 760?


New Member

Re: Configuring PIX 501 with ISDN DialUp Connection

This will be an easy do for you. There are just a couple of things you will have to do that will be different from the standard out of the box config.

1) Give the outside interface of the 501 a static IP [ip address outside]

2) Turn off NAT on the PIX [nat (inside) 0 0 0]

On the 760,

1) enable NAT (actually PAT) [ip nat inside source list 1 interface BRI0 overload]

2) Give the ethernet interface an IP address to match the PIX [router#(config-if) ip add]

3) Add a static route to your inside network [ip route]

That should do it!