Which of the following devices should not be part of a networks perimeter defense?
A.
A boundary router
B.
A firewall
C.
A proxy server
D.
None of the above�all are needed to protect the network behind the perimeter
Explanation:
D: The security perimeter is the first line of protection between trusted and untrusted networks. In general, it includes a firewall and router that helps filter traffic. Security perimeters may also include proxies and devices, such as an intrusion detection system (IDS), to warn of suspicious traffic. The defensive perimeter extends out from these fi rst protective devices, to include proactive defense such as boundary routers which can provide early warning of upstream attacks and threat activities. Page 765.