Odd issue this. I have a few filters set up for the firewall to prevent access to and from anything but a list of specific IP addresses.
They filter properly, for a while. Then, for some unknown reason, the wireless devices I've got seems to not be able to get through the firewall. If I turn the 'data filter' off, then access the site (that's in the 'allowed' list of the filter, obviously it'll let me through. THEN I can turn the 'data filter' on again, and traffic will still get through. It's like the filters are blocking everything. Firware is 2.8.1, which I know is one revision out from the laterst, but I can't see anything listed in the changelog for 2.8.2 that would make me believe it'll treat it any differently.