An email administrator is tasked to set up 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 email server? (Choose two.)
A.
lsof
B.
netstat
C.
ipconfig
D.
traceroute
E.
ping
F.
dig