How does an administrator configure an Expressway to make sure an external caller cannot reach a specific internal address?
A) block the call with a call policy rule in the Expressway-E
B) add the specific URI in the firewall section of the Expressway and block it
C) configure FAC for the destination alias on the Expressway
D) add a search rule route all calls to the Cisco UCM

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The Answer of How does an administrator configure an Expressway to make sure an external caller cannot reach a specific internal address?
A) block the call with a call policy rule in the Expressway-E
B) add the specific URI in the firewall section of the Expressway and block it
C) configure FAC for the destination alias on the Expressway
D) add a search rule route all calls to the Cisco UCM

How Does an Administrator Configure an Expressway to Make Sure