Philip Zimmermann releases Zfone, a product that secures VoIP
by HNS Staff - Wednesday, 15 March 2006.
Zimmermann thinks Zfone is better than the other approaches to secure VoIP, because it achieves security without reliance on a PKI, key certification, trust models, certificate authorities, or key management complexity that bedevils the email encryption world.



It also does not rely on SIP signaling for the key management, and in fact does not rely on any servers at all. It performs its key agreements and key management in a purely peer-to-peer manner over the RTP packet stream. It interoperates with any standard SIP phone, but naturally only encrypts the call if you are calling another Zfone client.

This new protocol has been submitted to the IETF as a proposal for a public standard, to enable interoperability of SIP endpoints from different vendors.

In keeping with the long-standing PGP tradition, the source code is also available to download for peer review.

The Zfone public beta is available today for Mac OS X and Linux. The Windows XP version will be available in mid-April.

Spotlight

Using Hollywood to improve your security program

Posted on 29 July 2014.  |  Tripwire CTO Dwayne Melancon spends a lot of time on airplanes, and ends up watching a lot of movies. Some of his favorite movies are adventures, spy stuff, and cunning heist movies. A lot of these movies provide great lessons that we can apply to information security.


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