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PIX 506 Firewall with 1841 Router

I have a customer who wants to use their PIX 506E with their new 1841 basic IP IOS router. They have 1 IP address available. Is it possible to just have the PIX be a firewall and all routing functions work through the 1841 or will I need NAT turned on the PIX with IP addresses on the interfaces?

Internet --> PIX506E --> 1841 --> 2950T. This customer also wants VPN with Radius capabilities... Ideas?


Re: PIX 506 Firewall with 1841 Router

please excuse me for my stupidity, i was just wondering what the purpose of the 1841.

according to the original post, the simplified topology is like:

internet <--> pix <--> 1841 <--> inside net

providing the internet link can be terminated on the pix outside interface, and there is no other private wan connecting to branch office. 1841 is not required, as there is not much routing involved.

one advantage i can think of is to create a dmz segment between the pix and router, assuming the router has firewall feature set (however, your original post states that the ios is basic ip version).

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