TCP and UDP Ports, Protocols, and their Purposes

Which port does FTP operate on?

• 21

• 23

• 25

• 22

Which port does SSh operate on?

• 25

• 22

• 53

• 143

Which port does Telnet operate on?

• TCP 25

• UDP 23

• TCP 23

• UDP 25

Which port does SMTP operate on?

• 443

• 22

• 25

• 80

Which port does DNS operate on?

• 53

• 67

• 80

• 443

Which port does HTTP operate on?

• 143

• 80

• 68

• 3389

Which port does POP3 operate on?

• 137

• 110

• 169

• 57

Which ports does IMAP operate on?

• TCP 143

• TCP 161

• UDP 161

• UDP 143

Which port does HTTPS operate on?

• 3389

• 445

• 427

• 443

Which port does RDP operate on?

• 548

• 443

• 3389

• 389