Common Network Ports

Question 1

FTP (File Transfer Protocol) uses which port(s)?

Answer 1

TCP/20 and TCP/21

Question 2

SSH (Secure Shell) uses which port(s)?

Answer 2

TCP/22

Question 3

Telnet uses which port(s)?

Answer 3

TCP/23

Question 4

SMTP (Simple Mail Transfer Protocol) uses which port(s)?

Answer 4

TCP/25

Question 5

DNS (Domain Name System) uses which port(s)?

Answer 5

UDP/53

Question 6

DHCP (Dynamic Host Configuration Protocol) uses which port(s)?

Answer 6

UDP/67 and UDP/68

Question 7

HTTP (Hypertext Transfer Protocol) uses which port(s)?

Answer 7

TCP/80

Question 8

HTTPS (Hypertext Transfer Protocol Secure) uses which port(s)?

Answer 8

TCP/443

Question 9

POP3 (Post Office Protocol version 3) uses which port(s)?

Answer 9

TCP/110

Question 10

IMAP4 (Internet Message Access Protocol version 4) uses which port(s)?

Answer 10

TCP/143

Question 11

SMB (Server Message Block) uses which port(s)?

Answer 11

TCP/445

Question 12

SNMP (Simple Network Management Protocol) uses which port(s)?

Answer 12

UDP/161 and UDP/162

Question 13

LDAP (Lightweight Directory Access Protocol) uses which port(s)?

Answer 13

TCP/389

Question 14

RDP (Remote Desktop Protocol) uses which port(s)?

Answer 14

TCP/3389