As long as your listening port, connection port & port allowed within your software firewall are the same then you should be ok. You can check your firewall configuration here
Firewall setup

If you have port forwarding set up, check that the right port number's selected within options > advanced > firewall config. Also go back through your router's setup pages & make sure that you've configured things properly & saved any changes (I have to do a 'save & reboot' of my modem to save p/f changes).