Is it possible to forward multiple external ports to the same internal port but different internal IP address?
Lets say i run an internal IIS server for our company website, and use the NAT/PAT on the router to forward all external traffic on port 80 to this server. Then, lets say i set up an exchange server and want to set up OWA for users. This would require that i send port 80 traffic to a seperate location. Could i therefore continue forwarding all external port 80 traffic to port 80 on the IIS server, and set up a new port (lets say 6000) and instruct users to apply port 6000 at the end of the web address. I could then configure the router to forward all external traffic on port 6000 to port 80 on the exchange server?
Problem is, i have tried this, and i just get errors saying:
The port ranges overlapped: test (80-80) <--> HTTP (80-80
Thing is, i have tried this with different combinations of routers (bulk of which are belkin and netgear) and i get this kind of error everytime.
Is there something i should know about NAT/PAT in terms of translating external ports to the internal ports but different ip addresses?