Port Numbers

Question 1

22

Answer 1

Secure Shell (SSH)

Question 2

23

Answer 2

Telnet

Question 3

25

Answer 3

Simple Mail Transfer Protocol (SMTP)

Question 4

53

Answer 4

Domain Name Service (DNS)

Question 5

69

Answer 5

Trivial File Transfer Protocol (TFTP)

Question 6

80

Answer 6

Hypertext Transfer Protocol (HTTP)

Question 7

110

Answer 7

Post Office Protocol 3 (POP3)

Question 8

123

Answer 8

Network Time Protocol (NTP)

Question 9

143

Answer 9

Internet Message Access Protocol (IMAP)

Question 10

389

Answer 10

Lightweight Directory Access Protocol (LDAP)

Question 11

443

Answer 11

Hypertext Transfer Protocol Secure (HTTPS)

Question 12

445

Answer 12

Server Message Block (SMB) / Network Basic Input/Output System (NetBIOS)

Question 13

587

Answer 13

Simple Mail Transfer Protocol Secure (SMTPS)

Question 14

993

Answer 14

Internet Message Access Protocol Secure (Secure IMAP)

Question 15

995

Answer 15

Post Office Protocol 3 Secure (Secure POP3)

Question 16

1433

Answer 16

Structured Query Language (SQL)

Question 17

1935

Answer 17

Real-Time Messaging Protocol (RTMP)

Question 18

3389

Answer 18

Remote Desktop Protocol (RDP)

Question 19

8080

Answer 19

Hypertext Transfer Protocol (HTTP)

Question 20

21/20

Answer 20

File Transfer Protocol (FTP)

Question 21

5060/5061

Answer 21

Session Initiation Protocol (SIP)