We recently got the gigabit Fios service, which required their QUANTUM GATEWAY (a fancy name for a cheap router). Received my Tablo 4-Tuner last week, and it set itself up. However, after about 5 minutes of NOT using the internet, the router dumped its settings.
Verizon techs could not figure out how to make the rule in the router (so it would stay), but, after some snooping around in the router setting screens, I discovered a setting that looks like makes things stay!
Open the router in a browser by entering 192.168.1.1
Now, log into your router.
Once at the main screen, go to the TOP menus, find ADVANCED and click on it. Then click YES.
Under Network Settings, CLICK ON UNIVERSAL PLUG AND PLAY
There are TWO entries with tick boxes. Find the one that says “Enable Automatic Cleanup of Old Unused UPnP Services”. UNTICK that box.
That will keep all of your UPnP settings from being deleted automatically.