I recently purchased the Twin Wan XC-DPG503 from xincom.com. Set up was easy and I was doing session based load balancing and failover with my ADSL and Cable modem internet connections right out of the box with a few minor modifications.
The problems started when one particular application called ILX which provides realtime information on stocks, would not work. I contacted ILX support and they gave me a PDF with a bunch of ports to open. Only problem was that the DPG503 did not have anyplace to open ports for all PC's except for a screen called "Special Applications". I entered the information and it still didn't work, and then I read that only one PC at a time can use special applications. I have 5 PC's. That's when I turned on transparent bridging, this was supposed to bypass the firewall features of DPG503. Still, no luck. BTW, ILX works fine with a simple router.
So, does anyone know of a router that supports failover for cable modem and ADSL and does not use a firewall or has a firewall that can be completely disabled? Load balancing would be nice, but I can live without it.