Didn't know where would be best to post this, but I know some smart guys hang out here!

On my Droid X2 (used on PPC without data plan), I commonly use its Wi-Fi capabilities, and at a junior college I attend I'm finding that I can't successfully use Opera Mini (getting a connection error), and based on the color of the signal bars, I'm not able to connect to Google's servers for any transparent routine syncing that the phone/OS automatically does. I'm assuming their network has some ports blocked on their firewall. No problem with the native phone browser, and no problem at any other locations.

Does anyone know what the typical port numbers are for these services? I'm in discussions with the college's IT department, and anything I can find will likely expedite the resolution, plus it's a good networking exercise. TIA