Well, interesting thing going on. The IP given to him at http://www.whatismyip.com
than the WAN IP of the router. To make sure the page was not cached, he did do a hard refresh (CTRL + F5), and it stayed the same. The IP on the router's page is different than the router on the website, and yes, we are looking under WAN (he sent me a picture). The router IP is 10.83.xx.xx, and the IP shown by whatismyip is 208.98.xx.xx.
The router, under WAN Connection Type, is also listed as a DHCP Client.
He does have a modem to which the router connects, and I'm starting to get the feeling that the modem may be a router, although he thought he determined earlier it was not. However, when we tried to log in to the modem on various IPs found on the router's page, as well as connecting via the 208.98.xx.xx IP, the connection failed.
I just did some research and found that 10.xx.xx.xx is an internal IP like 192.168.xx.xx. So, this pretty much confirms the fact that the modem is acting as the DHCP device that assigns the router its IP, no?
We attempted to make the second router a switch , as seen here,
but he doesn't have a free LAN port to make this work. So, we're trying to forward the ports through two routers, which is a task that I understand how to do, as I have done it for my own network. However, he cannot log into the modem using either the external or internal IP; the browser simply times out. No username/password window even pops up.
I had him check ipconfig, and lo and behold the default gateway is indeed 10.83.40.1, the internal IP of the modem. His firewall is allowing connections to that IP. For what it's worth, the modem is an Alvarion ACPS-101G revision B, and I can find very little information about it online.
Edited by Glunn11, 03 February 2009 - 10:35 PM.