Protocol to Port

Question 1

FTP

Answer 1

FTP uses 2 ports:

20 for data
21 for connection/command/control

(TCP)

Question 2

SSH
SFTP
SCP

Answer 2

22

SSH, SCP, & SFTP are all secure/encrypted.
TCP

Question 3

Telnet

Answer 3

23

TCP

Question 4

SMTP

Answer 4

25

SMTP - Simple Mail Transport Protocol
Outgoing email
TCP

Question 5

TACACS

TACACS+

Answer 5

49

TACACS - Terminal Access Controller Access Control System

TACACS uses TCP or UDP

TACACS+ is newer version and uses (TCP)

Question 6

DNS

Answer 6

53

Domain Name System (or Service or Server)

(UDP for queries, TCP for zone transfers)

Question 7

DHCP

Answer 7

67 - destination port of a server
68 - port used by client
DHCP (UDP) - Dynamic Host Configuration Protocol

Distributes IP address

Question 8

TFTP

Answer 8

69
TFTP - Trivial File Transport Protocol
(UDP)

Question 9

HTTP

Answer 9

80

HTTP - Hypertext Transfer Protocol
TCP

Question 10

Kerberos

Answer 10

88

Kerberos (TCP,UDP) - network authorization using tickets over unsecure networks, between servers and users.

Question 11

POP3

Answer 11

110
POP3 - Post Office Protocol version 3
(TCP)
Incoming email

Question 12

NNTP

Answer 12

119
NNTP - Network News Transfer Protocol
(TCP)

Question 13

NTP

Answer 13

123
NTP - Network Time Protocol
(UDP)

Question 14

NetBIOS

Answer 14

137-139

NetBIOS - Windows networking

Question 15

IMAP4

Answer 15

143
IMAP4 - Internet Message Access Protocol version 4
(TCP)
Also for incoming email

Question 16

SNMP

Answer 16

161
SNMP - simple network management protocol (UDP)
Version 3 is the most secure so only use this version

Question 17

SNMP Trap

Answer 17

162

SNMP Trap - Simple Network Management Protocol Trap (TCP, UDP)

Question 18

LDAP

Answer 18

389
LDAP - Lightweight Directory Access Protocol
(TCP, UDP)

Question 19

HTTPS
SSL VPN
FTPS

Answer 19

443

HTTPS - Hypertext Transfer Protocol Secure

SSL VPN - Secure Socket Layer Virtual Private Network

FTPS

(TCP)

Question 20

IPsec

Answer 20

500
IPsec - Internet protocol security using ISAKMP (Internet Security Association and Key Management Protocol)
(UDP)

Question 21

Syslog

Answer 21

514

UDP

Question 22

L2TP

Answer 22

1701
L2TP - Layer 2 Tunneling Protocol
(UDP)

Question 23

PPTP

Answer 23

1723
PPTP - Point-to-Point Tunneling Protocol
(TCP, UDP)

Question 24

RADIUS

Answer 24

1812 for authentication
1813 for accounting

RADIUS - Remote Authentication Dial-In User Service

(UDP)

Question 25

RDP

Answer 25

3389
RDP - Remote Desktop Protocol
(TCP, UDP)

Question 26

Echo

Answer 26

7

Echo - Performs round trip tests between hosts.

Question 27

Chargen

Answer 27

19

Chargen - Character Generator

Question 28

RPC

Answer 28

135

RPC - Remote Procedure Call

Question 29

SMB

Answer 29

445

SMB - Server Message Block

Question 30

LDAPS

Answer 30

636

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

Question 31

POP3S

Answer 31

995

POP3S - POP3 over SSL (encrypted email retrieval)

Question 32

MS-SQL Database

Answer 32

1433

Question 33

IRC

Answer 33

6667

IRC - Internet Relay Chat

Question 34

Oracle

Answer 34

1521

Question 35

H.323

Answer 35

1720

Question 36

HP JetDirect Printing

Answer 36

9100

Question 37

Windows File Sharing

Answer 37

135, 137-139, 445

137-139 are also NetBIOS