Your customer would like to allow call attempts only from User Agents (UAs) who have previously registered through the Session Border Controller or who are configured as session agents. How would you accomplish this?
A.
Navigate to the sip-port configuration element and set the allow-anonymous parameter to agents-only.
B.
Navigate to the session-agent configuration element and set the allow-anonymous parameter to prev-registered.
C.
Navigate to the sip-port configuration element and set the allow-anonymous parameter to realm-prefix.
D.
Navigate to the sip-port configuration element and set the allow-anonymous parameter to registered.
E.
Navigate to the session-agent configuration element and set the allow-anonymous parameter to 403-forbidden.
Answer is wrong .. In Sip-port Peering : [allow anonymous] is either All(any source) - agents only(Session agent) or realm prefix (addr-prefix in realm-config & session agent) ... So answer will be agentsonly
The following are valid values:
all—No ACL is applied and all anonymous connections are allowed.
agents-only—Only requests from configured session agents are processed. The Oracle® Enterprise Session Border Controller responds to all other requests with a forbidden response.
realm-prefix—Only requests from session agents and addresses matching the realm’s address prefix are processed. All other requests are rejected with a 403 (Forbidden) response.
registered—Only requests from session agents and registered endpoints are processed. REGISTER allowed from any endpoint.
registered-prefix—Only requests from session agent and registered endpoint addresses that match the realm’s realm prefix are processed.
The following example shows the allow-anonymous parameter that has been configured to allow only requests from session agents and registered endpoints. All other session agent parameters following the allow-anonymous parameters are omitted for brevity.
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