Got a small nuisance problem...

We basically have two policies... one for the office that basically allows all ports but disables the laptop's wireless. The other policy is for external connections and enables the wireless with a stateful firewall. That's about it.... some minor additions, but that is basically it.

Anyway, the problem is that when mobile and the laptop is connected via wireless, the laptop will drop the wireless connection after about 15 minutes and then subsequent 15-20 minutes. If I issue a "bypass overide" we stay connected, so obviously the firewall is dropping.... some kind of request from the wap.

Any clues as to what I can add to the policy to avoid this loss of connection?