NSA H.323 surveilance

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Hi,

The Intercept just published a few very interesting slides how the NSA
intercepts H.323 (and SIP and Skype) VoIP traffic:

https://firstlook.org/theintercept/document/2014/03/12/vpn-voip-exploitation-hammerchant-hammerstein/

Notice how the HAMMERSTEIN component on page 4 "processes" the call
signaling as man-in-the-middle. This would pretty much match the attack
I have been warning about previously when I wrote "Why your AES
encryption might be worth nothing".

http://www.gnugk.org/h323-encryption.html

Another interesting fact seems to be that they targeted H.323 and SIP
before taking on Skype (bottom of page 2).

Regards,
Jan

-- 
Jan Willamowius, Founder of the GNU Gatekeeper Project
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