Wednesday, December 20, 2006

How Skype Punches Holes in Firewalls

From, Slashdot: 12/15/2006

An anonymous reader writes "Ever wondered, how P2P software like Skype directly exchanges data — despite the fact, that both machines are sitting behind a firewall that only permits outgoing traffic? Read about the hole punching techniques, that make a firewall admin's nightmares come true."

They link to an article:

This is almost identical to what I am saying in my paper dated 6/3/2002

This was a technique I pioneered, we had it in our one of our livecam video streaming products back in 1997.

Now Skype is using it.

Related Article:
P2P Through Firewalls

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