The new Chief Technology Officer (CTO) is seeking recommendations for network monitoring services for the local intranet. The CTO would like the capability to monitor all traffic to and from the gateway, as well as the capability to block certain content. Which of the following recommendations would meet the needs of the organization?

A.
Recommend setup of IP filtering on both the internal and external interfaces of the gateway router.

B.
Recommend installation of an IDS on the internal interface and a firewall on the external interface of the
gateway router.

C.
Recommend installation of a firewall on the internal interface and a NIDS on the external interface of the
gateway router.

D.
Recommend installation of an IPS on both the internal and external interfaces of the gateway router.

Explanation: