Unable to connect from home Proxy

I use a home squid server tunneled through ssh to surf while at work. Recently I started getting the following while trying to connect.

Code:
I'm sorry, but you are banned. You may not post, read threads, or access the forum. Please contact your forum administrator should you have any questions.

It may have started after I received a new IP address from Comcast but I can’t confirm that. Can anyone help with this?