A system administrator has been tasked with allowing SMTP traffic through the system's host- based firewall. Which of the following ports should the administrator enabled?

The correct answer is B. 25. SMTP (Simple Mail Transfer Protocol) uses port 25 to send email messages between servers12. SMTP uses port 25 to send email messages between mail servers. Therefore, the system administrator should enable port 25 to allow SMTP traffic through the host-based firewall.

Networking

Question

Options

A23
B25
C80
D161

How the community answered

(27 responses)

A
7% (2)
B
89% (24)
D
4% (1)

Explanation

SMTP (Simple Mail Transfer Protocol) uses port 25 to send email messages between servers12. SMTP uses port 25 to send email messages between mail servers. Therefore, the system administrator should enable port 25 to allow SMTP traffic through the host-based firewall.

Topics

#SMTP#Port numbers#Network protocols#Firewall

Community Discussion

No community discussion yet for this question.

Full 220-1101 Practice