Hello,
I have some doubt about Authorization and Authentication.
Please explain me the meaning of these two terms with the help of examples.
1.) protection space
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Since SIP does not have the concept of a canonical root URL, the notion of
protections spaces are
interpreted differently for SIP.
Since SIP URIs are not hierarchical, the paragraph in [40, Section 2] that
states that "all paths at or
deeper than the depth of the last symbolic element in the path field of the
Request-URI also are within the
protection space specified by the Basic realm value of the current
challenge" does not apply for SIP. SIP
clients MAY preemptively send the corresponding Authorization header with
requests for SIP URIs within
the same protection realm (as defined above) without receipt of another
challenge from the server.
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>From RFC2543bis-03.txt
2.) realm
Please explain for both basic and digest authentication mechanism.
Thanks!
Chandrika
SIP Implementation Team
Phoenix Global Solutions
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