A database administrator contacts a security administrator to request firewall changes for a connection to a new internal application. The security administrator notices that the new application uses a port typically monopolized by a virus. The security administrator denies the request and suggests a new port or service be used to complete the application’s task.
Which of the following is the security administrator practicing in this example?
A . Explicit deny
B . Port security
C . Access control lists
D . Implicit deny
Answer: C