Question

Filtering by TCP or UDP port number is commonly called port filtering or ____________________ filtering.

Answer 1

Protocol filtering

Step-by-step explanation:

When using UDP or TCP port numbers, you are able to filter many information, including POP email messages, SMTP messages, DNS requests, NNTP newsgroup sessions, and other NetBIOS sessions. Port or Protocol Filtering is also a feature that is used when attempting to block traffic that are not wanted from your network.