The ability to ping the Cisco Secure ACS Solution Engine 3.3 from within the LAN is disabled by default. The Cisco Secure ACS Security Appliance is a hardened, locked-down system and is designed with security in mind. The Cisco Secure ACS Security Appliance uses a Windows strengthened image, which has all redundant services and connections stopped. It was made to keep all viruses, worms, and Distributed Denial of Service (DDoS) attackers out.
Disable the CSAgent to allow the Cisco Secure ACS Solution Engine 3.3 to respond to ping requests.