How Skype Gets Around Firewalls

[HardOCP News]

I’m positive that most people, Skype users in particular, will find this article extremely interesting. If you’ve ever wondered how Skype can connect two PC users across the country, both behind firewalls, this article explains it.

Peer-to-peer software applications are a network administrator's nightmare. In order to be able to exchange packets with their counterpart as directly as possible they use subtle tricks to punch holes in firewalls, which shouldn't actually be letting in packets from the outside world.

 

[Xilikon]

I already knew this and this is precisely why our workplace specifically forbid installing software of this type. It's a real security nightmare if we allow them on the company network/computers.

 

[KaosDG]

I’m positive that most people, Skype users in particular, will find this article extremely interesting. If you’ve ever wondered how Skype can connect two PC users across the country, both behind firewalls, this article explains it.

Yup, and it gives good insight on how to block it too.

(For us Network Monkeys)