An organization recently installed a firewall on the network. Employees must be able to send and
receive email from a POP3 server. In which of the following ways should the firewall be
configured? (Select TWO).
A.
Allow TCP port 23
B.
Allow TCP port 25
C.
Allow TCP port 110
D.
Allow UDP port 25
E.
Allow UDP port 110
25 TCP Simple Mail Transfer Protocol (SMTP)—used for e-mail routing between mail servers
110 TCP Post Office Protocol v3 (POP3)
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