[Serusers] SER & PSTN gateways (Ovislink?)

[Klaus Darilion]

The problem is that SIP authentication only supports:
caller - callee
caller - proxy

but it does not support proxy - callee, which would be necessary for 
authentication against a gateway. This can be solved using TLS betwenn 
proxy and gateway and trust every request which cames along the TLS 
connection.

Klaus

Alex Bligh wrote:

> 
> 
> --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
> 
>