Which of the following are potential firewall problems that should be logged?

A.
Reboot

B.
All of the choices.

C.
Proxies restarted.

D.
Changes to configuration file.

Explanation:
The following firewall configuration problem are logged:
Reboot of the firewall.
Proxies that cannot start (e.g. Within TIS firewall).

Proxies or other important services that have died or restarted.
Changes to firewall configuration file.
A configuration or system error while firewall is running.