Restrictions That @Home Places on Their Customers?

David Hansen asks: "I want to see what problems other Slashdot users have had with @Home restricting their service. We all know that they block the SMB ports, and probably for good reason. But did you know that they won't let you access certain other machines on the @Home network? And why don't they mention any of this in their acceptable use policy? My mother and father are both @Home subscribers in the same city (different subnets). I have Linux boxes acting as firewalls in both places which cannot ping or otherwise contact each other. I can ping them both from an outside location. I discovered this and the SMB thing the hard way. What else doesn't @Home want us to do? Do other ISPs do this also? BTW, I can reach @Home users who are in other cities." I've noticed that ISPs have been filtering lots of ports in the event that users will put up servers. Do you feel that ISPs should make a list of ports that they filter available to their customers?