I came across NAT Check which could come in handy at some future date. It talks about "hole punching". The program only checks for the presence of a NAT, and also describes was of getting a peer-to-peer connection setup through a NAT.
Three Ring Hole Punch
Yep, see my post about this.
Submitted by Julian (not verified) on Fri, 2005/02/25 - 15:18.
Yep, see my post about this.
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Hole punching is STUN? Any ap
Hole punching is STUN? Any application uses that technique? There's something in gnomemeeting 1.20 I think...