I just can't figure out how to get the two messengers working with all their popular features. It seems, that the Windows Messenger has less problems than MSN. Generally, chat works, but sound, video etc. don't.
I am sure, that the problem is NAT traversal. I have enabled UPnP on te border gateway (the router with NATted interface), but so far without luck. The MT-documentation is sparse in this area - and so is the M$-documentation as well.
Please help - if somebody knows how...
Thanks in advance