Cisco 1921 router... have 2 Macs running Entourage and connecting to Exchange server using rpc/http.
Since Entourage only has one place to enter a server name, you have to enter the public name (http://mail.server1.com
), as opposed to Windows, where you enter both the public and the internal (server1.domain.internal).
Entourage works fine when the Macs are outside the network looking in. But they don't connect to the server when they are on the internal network. This requires the Cisco router to pass the internal packet to the public network, and then NAT it back to the inside server.
I was told yesterday by Cisco that this was an unsupported NAT configuration; but that it was possible to do using Virtual NAT (although he hasn't figured out how to get that working).
Obviously, there is a way to do this... does that "unsupported configuration" thing sound right?
Not sure what the difference between NAT and Virtual NAT is, but whatever works is fine.
There are also other services (mail, web, ftp) that are NATed through, and the router will soon have vlans added to it.
Can someone make a suggestion/point me in the right direction?