PIX 515E with a pool of 14 Public IP Addresses, NAT/PAT Question.
Posted on 2004-03-10
We are planning a PIX install. I have a pool of 14 Public IP Addresses that are free (it is a class C 204.x.x.x/26 network that has been subnetted down even further. So actually the 14 addresses would be like 204.x.x.x/28). I plan on using a 204.x.x.x/30 for the outside interface and the router so that would be a seperate network. We have quite a bit of people who use the internet on our network. Probably 150 or so connections at any given time for mainly research. So my question is this: would it be beneficial to setup our PIX with that pool of public ip addresses or would it be better to just use the 1 public IP Address on the outside interface and PAT? Or both?
Also, we have one server that resides on the inside interface that must have a public IP or it will not function correctly. So I can't really use NAT for it! What do I have to do about that one?
I guess I am really looking for some good advice here since I know my IOS stuff but I am not so clear yet on the PIX. Many thanks!!!