A stateless or stateful packet filter that supports active ____ must allow all traffic coming from TCP Port 20 as well as outbound traffic coming from ports above 1023.
A) TCP
B) ICMP
C) FTP
D) UDP

Question

Quizplus · Accepted Answer

The active keyword refers to FTP's active mode, which uses TCP Port 20 for data transfer. Therefore, a stateless or stateful packet filter that supports active FTP must allow all traffic coming from TCP Port 20. Additionally, outbound traffic coming from ports above 1023 must also be allowed to establish the control connection for FTP. ICMP and UDP are not relevant for FTP's active mode, so they can be eliminated as options.

A Stateless or Stateful Packet Filter That Supports Active ____