[Serusers] SER & PSTN gateways (Ovislink?)

[Alex Bligh]

--On 24 March 2004 10:27 -0800 Tom <tom at sdf.com> wrote:

> DIGEST SIP security.
> How does this work?

Short answer: almost identically to HTTP authentication. IE a SIP request
is sent, server replies with "authentication required" plus a a number (the
challenge), the UA responds with a response containing a DIGEST calculation
of the number, and the password. The SIP server then compares the digest
response with its calculated digest based on the number plus the password.
If they are equal, it grants access.

Long answer: read the RFCs

Alex