Due to the complexity of firewall rules and router tables, plus the sheer size of intrusion detection systems (IDSs) and server logs, a physical review will be insufficient. The best approach for confirming the adequacy of these configuration settings is to periodically perform attack and penetration tests.

Section: INFORMATION SECURITY PROGRAM MANAGEMENT
Explanation:
When security policies are strictly enforced, more resources are initially required, thereby increasing, the total cost of security. There would be less need for frequent modification. Challenges would be rare and the need for compliance reviews would not necessarily be less.