Is there anyone else using Microsoft NetMeeting?

Or: Is it still possible to use Microsoft NetMeeting today? Install… Alright, I have it on my old laptop myself, but use it correctly?

Microsoft NetMeeting is a kind of previous version of Skype.

In collaboration with routers and firewalls, there are connection difficulties with NetMeeting, since a directly accessible IP address is required. The forwarding of TCP port 1503 to the computer behind the router allows the use of the basic functions, voice / video communication also requires the forwarding of TCP port 1720.

https://de.wikipedia.org/...NetMeeting