Still need to open lots of ports?

I'd like to use messenger between myself and a PC in another country but we
both have NAT equipped routers/firewalls. Is there a guide on the web that
explains how to set this up?

Last time I looked at this I recall being told I needed to open 65,000 ports
in my firewall if I wanted video and audio to work. Is that still the case
or has anything changed?

One of the routers supports uPnP - does that take care of things at that end
automatically?

Thanks





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