Which of the following controls should critical application servers implement to protect themselves from
other potentially compromised application services?
Correct Answer: D
Section: Application, Data and Host Security
Explanation/Reference:
Explanation:
A host-based firewall is designed to protect the host from network based attack by using filters to limit the
network traffic that is allowed to enter or leave the host. The action of a filter is to allow, deny, or log the
network packet. Allow enables the packet to continue toward its destination. Deny blocks the packet from
going any further and effectively discarding it. Log records information about the packet into a log file.
Filters can be based on protocol and ports. By blocking protocols and ports that are not required, other
potentially compromised application services would be prevented from being exploited across the network.