Tech+ CertMaster Learn v6 Section 5.2.3 - Network Ports

21

File Transfer Protocol (FTP)

22

Secure Shell (SSH)

23

Telnet

25

Simple Mail Transfer Protocol (SMTP)

53

Domain Name System (DNS)

80

Hypertext Transfer Protocol (HTTP)

110

Post Office Protocol version 3 (POP3)

143

Internet Message Access Protocol (IMAP)

443

Hypertext Transfer Protocol Secure (HTTPS)

587

Simple Mail Transfer Protocol (SMTP)

File Transfer Protocol (FTP)

Standard protocol used for moving files between computers

Secure Shell (SSH)

Provides for secure communication between devices

Telnet

Provides for unsecure communication between devices

Simple Mail Transfer Protocol (SMTP)

Used for sending email. However, it has been deprecated in the last decade

Domain Name System (DNS)

Provides a translation between friendly domain names and IP addresses

Hypertext Transfer Protocol (HTTP)

Provides communication standards for clients and servers on the World Wide Web

Post Office Protocol version 3 (POP3)

Used by email programs for incoming email

Internet Message Access Protocol (IMAP)

Used most commonly for receiving email

Hypertext Transfer Protocol Secure (HTTPS)

Establishes encrypted communication between clients and servers on the World Wide Web

Simple Mail Transfer Protocol (SMTP)

Used for outgoing email