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How secure are your calls?

Mar 22, 2007 2:01 pm

How secure are your calls?

Ken Hilving

I have heard some rumblings about the lack of security of VoIP calls. Bob Cringely gave his concerns, for example, in his column this past December.

I don't disagree with his assessment that VoIP is not particulary secure, but I don't think its any less secure than a traditional PSTN call. In fact, RFC 3261 Section 26 is fairly clear on this, but offers a solution as well. "Any media associated with a session can be encrypted end-to-end independently of any associated SIP signaling."

Seems to me that encryption over the Internet is a whole lot easier to implement than encryption over PSTN. What do you think?

Links to referenced information -
http://www.pbs.org/cringely/pulpit/2006/pulpit_20061201_001274.html
http://www.ietf.org/rfc/rfc3261.txt

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