An email administrator is tasked to setup a Linux mail server. One of the requirements is to close all ports except SSH, HTTPS, SMTP, POP3, and IMAP4. Which of the following commands should be used to see which ports are currently open on the mail server? (Select TWO).
A) lsof
B) netstat
C) ipconfig
D) traceroute
E) ping
F) dig

Question

Quizplus · Accepted Answer

The `lsof` command can list open files and the network connections associated with them, which includes open ports. The `netstat` command can display network connections, routing tables, and a number of network interface statistics, including open ports.

An Email Administrator Is Tasked to Setup a Linux Mail