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I'm not convinced. It would use every trick in the book to punch holes; stun, upnp, sip, it's own protocol on top of udp, it would even send data over port 80 o
by strictfp 6y ago
I'm not convinced. It would use every trick in the book to punch holes; stun, upnp, sip, it's own protocol on top of udp, it would even send data over port 80 or 443. And if that failed Skype would use a third Skype client to open a port, or even route the calls through the third party.
I always thought this was the major reason why Skype was so successful. It would penetrate almost any workplace firewall and "just worked" for most people. Shady, yes, but it worked.
- JoeAltmaier 6y agoAnd all those tricks either worked for you (your endpoint), or they didn't. No middle ground. I worked 8 years in this environment (collaboration tools) and it was our holy grail to get p2p connections. We tried all those tricks and more. It worked a fraction of the time (at that time, 8 years ago).
- strictfp 6y agoI guess most holes got patched. I worked with the same things around 2007.