(Vin McLellan pointed this out to me). http://www.computeruser.com/news/00/11/23/news6.html http://www.snapshield.com/ Snapshield (formerly Microlink) is offering a product consisting of special box which sits on your phone line and special PBXs which allow 'end-to-end' encrypted voice/fax etc, based on DES (apparently single DES) and El-Gamal. Calls to or from their Snapshield equipped phones are routed via a special PBX box which provides encryption between the PBX and the phone. If both phones support encryption, the entire link is encrypted. Their page is kind of light on details. In particular it's not clear whether session keys are negotiated between the 'Snapgate' PBX box or between two of the phone boxes. Since they support point-to-multipoint calling, and indicate that monitoring is possible, I suspect the former. For some users, this means that the Snapgate box is an unacceptable point of attack. I can't find any suggestion of robust authentication, though I have not checked everything on their site. They are targetting telcos (for people willing to outsource their security) and large private networks. Anyone have any more information or comments on this product? Peter Trei PS: Their webpage wants me to install a plugin called Data Detective PC Search by Appletware. Anyone know what it does? It sounds ominous. pt Disclaimer: The above represent my personal opinions only.