Skype protocol definition

Contributor(s): Kim Lindros and Ed Tittel

Skype protocol is a peer-to-peer Internet telephonyprotocol used to move encrypted voice over IP (VoIP) traffic between Skype members' computers (peers). 

Skype uses RC4 encryption for signaling and AES for voice data. The protocol is proprietary, created specifically for Skype sessions, and does not work with most standard VoIP networks without licensing from Skype.

Skype requires that Ports 80 and 443 be open for outgoing Transmission Control Protocol (TCP) transmissions and recommends that all destination ports above 1024 also remain open. In addition, Ports 5060 and 8000 should remain open for incoming and outgoing UDP transmissions. Skype prefers UDP for voice transmissions.

Because the Skype protocol is closed source, the vendor does not reveal how it works.

This was first published in July 2014

Dig Deeper

PRO+

Content

Find more PRO+ content and other member only offers, here.

0 comments

Oldest 

Forgot Password?

No problem! Submit your e-mail address below. We'll send you an email containing your password.

Your password has been sent to:

-ADS BY GOOGLE

File Extensions and File Formats

Powered by:

SearchMobileComputing

SearchNetworking

SearchTelecom

SearchITChannel

SearchEnterpriseWAN

SearchExchange

Close