Blocked Ports

[Mike Dwiggins]

I need to use Ports 27177 and 27178 but, every Port Checker I can find 
says they are blocked.

My iptables setup ( for ) now is:

Incoming Packages-   Accept
Forwarded Packets-  Accept
Outgoing Packets-     Accept

The way I understand it, that means NO Ports should be blocked.  Am I 
barking up the wrong tree and need to be checking with my ISP?

I think I should be but am just looking for a sanity check!

Mike D.