Learn how to protect your Cisco Expressway-E from fraudulent call attempts by configuring Call Policy Rules. Discover the steps to create a rule that matches and blocks specific URIs, ensuring optimal system performance and security. Implement effective call control measures with Expressway-E’s powerful Call Policy feature.
Table of Contents
Question
A company has a single Expressway-E that exhibits high resource utilization. An engineer checks the logs and finds numerous fraudulent attempts from sip:[email protected]. Where must the engineer go to configure a call policy rule and block the desired URI?
A. Call History Configuration > Call Policy > Rules
B. Configuration > Call History > Policy > Rules
C. Configuration > Call Policy > Rules
D. Configuration > Policy > Inbound > Rules
Answer
C. Configuration > Call Policy > Rules
Explanation
To block fraudulent call attempts from a specific URI (sip:[email protected]) on the Expressway-E, the engineer must navigate to Configuration > Call Policy > Rules. In this section, a new rule can be created to match the undesired URI pattern and apply the appropriate action, such as rejecting the call.
Call Policy rules on the Expressway-E allow administrators to control which calls are allowed, rejected, or redirected based on the source and destination URIs. By configuring a rule targeting the fraudulent URI, the engineer can effectively block those calls and prevent them from consuming system resources.
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