Configuring Port Forwarding on Motorola NVG510
Posted on 2013-02-03
A client of mine has "upgraded" from traditional AT&T DSL service to the new AT&T U-Verse Service. In the process, AT&T supplied them with a new router/modem/gateway device, which is a Motorola NVG510.
I've got everything configured back for them except the appropriate port forwarding. They have an Exchange server, so I need to forward the appropriate ports to that server. I found the NAT/Gaming option under the Firewall menu, and it will allow me to specify the services I want to forward. However, it gives me a pre-populated list of IP addresses I can forward to, and their Exchange server's address is not among them.
So, for example, their server is 192.168.1.2 but the modem only shows 192.168.1.6, 192.168.1.104, etc. There doesn't seem to be any way to manually input an IP address. And I can't quite figure out how it pre-populated the list either, as the addresses that shows are NOT addresses the modem's DHCP server has handed out. Regardless, the Exchange server is on a static IP and doesn't use DHCP anyway.
Any thoughts on how I can get it to forward to the proper address?