Question

Users have been reporting unusual automated phone calls, including names and phone numbers, that appear to come from devices internal to the company.

Which of the following should the systems administrator do to BEST address this problem?

A. Add an ACL to the firewall to block VoIP.
B. Change the settings on the phone system to use SIP-TLS.
C. Have the phones download new configurations over TFTP.
D. Enable QoS configuration on the phone VLAN.

Answer 1

To address the problem of unusual automated phone calls from internal devices, the systems administrator should change the phone system settings to use SIP-TLS and enable QoS configuration on the phone VLAN.

Step-by-step explanation:

In order to address the problem of unusual automated phone calls appearing to come from devices internal to the company, the systems administrator should change the settings on the phone system to use SIP-TLS (Session Initiation Protocol - Transport Layer Security).

This protocol provides secure communication over the internet and prevents unauthorized access and eavesdropping. Additionally, the systems administrator should enable QoS configuration on the phone VLAN (Quality of Service). This will prioritize voice traffic and ensure that phone calls are not disrupted or affected by other network activities.

Adding an ACL (Access Control List) to the firewall to block VoIP (Voice over Internet Protocol) may not be the best solution as it might block legitimate phone calls as well. Having the phones download new configurations over TFTP (Trivial File Transfer Protocol) might not address the issue of unusual automated phone calls.