Why are ports blocked?
http://forums.cox.com/forum_home/internet_forum/f/5/t/7680.aspx This thread (OPEN PORT 80)
says it's part of acceptable use policy....https://www.cox.com/aboutus/policies.html
I guess this Clause..
5. Servers. You may not operate, or allow others to operate, servers of any type or any other device, equipment, and/or software providing server-like functionality in connection with the Service, unless expressly authorized by Cox.
What gives you the right to specify that?
I mean... there's certainly nothing preventing you from stating such things, it's a First amendment right of course...