Port to Protocol

Question 1

20 for data

21 for connection/command/control

Answer 1

FTP

Question 2

22

Answer 2

SSH
SFTP
SCP

Question 3

23

Answer 3

Telnet

Question 4

25

Answer 4

SMTP

Question 5

49

Answer 5

TACACS

Question 6

53

Answer 6

DNS

Question 7

67 - destination port of a server

68 - port used by client

Answer 7

DHCP

Question 8

69

Answer 8

TFTP

Question 9

80

Answer 9

HTTP

Question 10

88

Answer 10

Kerberos

Question 11

110

Answer 11

POP3

Question 12

119

Answer 12

NNTP

Question 13

123

Answer 13

NTP

Question 14

137-139

Answer 14

NetBIOS

Question 15

143

Answer 15

IMAP4

Question 16

161

Answer 16

SNMP

Question 17

162

Answer 17

SNMP Trap

Question 18

389

Answer 18

LDAP

Question 19

443

Answer 19

HTTPS

SSL VPN

Question 20

500

Answer 20

IPsec

Question 21

514

Answer 21

Syslog

Question 22

1701

Answer 22

L2TP

Question 23

1723

Answer 23

PPTP

Question 24

1812 for authentication

1813 for accounting

Answer 24

RADIUS

Question 25

3389

Answer 25

RDP

Question 26

135, 137-139, 445

Answer 26

Windows File Sharing

137-139 are also NetBIOS

Question 27

7

Answer 27

Echo - Performs round trip tests between hosts.

Question 28

19

Answer 28

Chargen - Character Generator

Question 29

135

Answer 29

RPC - Remote Procedure Call

Question 30

445

Answer 30

SMB - Server Message Block

Question 31

636

Answer 31

LDAPS - LDAP over SSL/TLS (Secure Lightweight Directory Access Protocol)

Question 32

995

Answer 32

POP3S - POP3 over SSL (encrypted email retrieval)

Question 33

1433

Answer 33

MS-SQL Database

Question 34

6667

Answer 34

IRC - Internet Relay Chat

Question 35

1521

Answer 35

Oracle

Question 36

1720

Answer 36

H.323

Question 37

9100

Answer 37

HP JetDirect Printing

Question 38

135, 137-139, 445

Answer 38

Windows File Sharing

137-139 are also NetBIOS