Which ports to open for video confrence

[mrman3k]

I would like to know which ports are necessary to open in my firewall to allow a videoconfrence. I just tried it with a contact over MSN Messenger but it doesnt work. If anyone knows what I need to do to make it work, that would be greatly appreciated.

Thanks!

 

[JackMDS]

Special Application Port List.

 

[mrman3k]

Thank you!