Has anybody tested the firewall at the school?

The district has a firewall to permit the students to access only "education sites" on the web. Has anybody tested the protections to see what it actually permits? I am aware that they have at least two settings, limited access, and full access. What I want to know is what full access actually permits and what it does not permit.

I have done limited testing. Apparently you can receive e-mail, but can't send it. However it would appear that iMessage works both ways.

GreenGrass, I disagree. It appears that i was able to send e-mail the other day. So either the access has been changed, or we are logging into the network differently.

Has anybody done any other test?