> From: Olle E. Johansson [o...@edvina.net]
> 
> I'm trying to figure out why after more than ten years of SIP in the
> industry, we're still on the 80's level in regards of security in the
> implementations. The whole business is still using "telnet SIP" where
> we should have moved to "ssh SIP". As long as we do that, SIP will
> stay on private VLANS and Skype will be alone on the Internet.

For most purposes, what we have now suffices.  In practice, when
individuals talk to individuals, the end-to-end authentication is done
by users recognizing other users' voices.  (And 95%+ of humans have a
huge DSP in their brain dedicated to that task.)

For most other tasks, "I dialed the directory number and the person
who answered claims to be working for the business in question." is
usually sufficient, and in situations where it isn't, business have
additional security precautions for PSTN calls that work sufficiently
well for SIP calls.

I mean, when was the last time you made a call and wished that the
telephone infrastructure provided more robust security and
authentication of the call?

In the real world, the "felt need" for security is not "I don't want
the government to find out." but rather "I don't want my wife to find
out."

Dale

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