Blocking based purely on port numbers is so ridiculously easy to circumvent that it seems pointless. Are you sure you aren't just falling foul of a default firewall?
Nope. I am a network routing specialist. It is not a firewall problem. It is an intentional block implemented by my ISP. I deal with the same problems with users on this forum also when they try to access the webfig page on their routers:
http://forum.mikrotik.com/index.php
I am SurferTim on that forum also.
It is easy to circumvent for those who are "in the know", but not for a novice. I use ports 8080 to 8088 to avoid the block for others, but I don't need it. I have several static ips on a commercial account.