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Is HTTP Digest secure?
Digest authentication is secure due to the way it passes authentication information over the network. Usernames and passwords are never sent. Instead, IIS uses a message digest (or hash) to verify the user’s credentials.
How is it possible to reuse an authentication realm?
You can of course reuse authentication realms to protect different areas of the server. Select the “realms” pane, type the name of your new realm (ie “w3c”) in the “Realm name” field and type on Enter. 3) Add some user for the new realm. The user attributes are describe in the AuthUser reference page.
What is nonce value in SIP?
The SIP server issues a callenge to authenticate the user. Nonce value is sent to the SIP client. The client is expected to generate a response to the nonce value sent in this message. The “Digest Authentication Response” included in the message is a response to the nonce challenge.
What is the purpose of SIP digest authentication?
SIP digest authentication aims to provide stateless authentication and replay protection of selected SIP messages based on challenge–response paradigm. Assuming the two parties involved in the authentication share a secret password, SIP digest authentication reuses the HTTP digest authentication [8] with very minor customization.
Which is challenge type used by SIP registrar server?
Challenge type used by the SIP Registrar server is: “WWW-Authenticate” Indicator of Authentication Scheme which is “Digest” Realm is the Protection Domain/or what I call the Dialing Domain ( in this string that I captured from a phone registered to a Cisco gateway no realm was configured) Nonce (Number Once) that can only be used one time.
When does SIP user agent send registration request?
When a SIP User Agent sends Registration Request to SIP Registrar Server it will respond with a 401 Unauthorized with a challenge to provide credentials. Proxy Authentication of outbound calls (which I will cover in another post)
Why is digest authentication vulnerable to replay attacks?
Digest authentication is vulnerable to replay attacks, to a limited extent. Digest authentication is secure due to the way it passes authentication information over the network. Usernames and passwords are never sent. Instead, IIS uses a message digest (or hash) to verify the user’s credentials.