Port Numbers

Question 1

DHCP

Answer 1

Dynamic Host Configuration Protocol: Automated configuration of IP address
UDP 67, 68

Question 2

DNS

Answer 2

Domain Name System: Converts names to IP addresses
TCP/UDP 53

Question 3

FTP

Answer 3

File Transfer Protocol:
(20 Active mode data)
(21 Control)
TCP 20,21

Question 4

H.323

Answer 4

TCP 1720

Question 5

HTTP

Answer 5

Hypertext Transfer Protocol:
Communication in the browser in the clear.
TCP 80

Question 6

HTTPS

Answer 6

Hypertext Transfer Protocol Secure:
Communication in the browser that is encrypted.
TCP 443

Question 7

IMAP

Answer 7

Internet Message Access Protocol:
Manage email inboxes from multiple clients.
TCP 143

Question 8

IMAP over SSL

Answer 8

Internet Message Access Protocol:
Manage email inbox from multiple clients over secure sockets layer
TCP 993

Question 9

LDAP

Answer 9

Lightweight Directory Access Protocol:
Store and retrieve information in a network directory
TCP 389

Question 10

LDAPS

Answer 10

Lightweight Directory Access Protocol Secure:
A non-standard implementation of LDAP over SSL
TCP 636

Question 11

MGCP

Answer 11

TCP / UDP 2427

Question 12

MySQL

Answer 12

MySQL:
Free and open-source database
3306

Question 13

NTP

Answer 13

Network Time Protocol:
UDP 123

Question 14

POP3

Answer 14

Post Office Protocol:
Basic mail transfer functionality
TCP 110

Question 15

POP3 over SSL

Answer 15

Post Office Protocol over Secure Sockets Layer:
Basic mail transfer functionality over SSL
TCP 995

Question 16

RDP

Answer 16

Remote Desktop Protocol:
Can connect to an entire desktop or just an application.
TCP / UDP 3389

Question 17

SFTP

Answer 17

TCP 22

Question 18

SIP

Answer 18

Session Initiation Protocol
TCP / UDP 5060, 5061

Question 19

SMB

Answer 19

TCP / UDP 3020
TCP 445

Question 20

SMTP

Answer 20

TCP 25

Question 21

SMTP over TLS

Answer 21

TCP 587

Question 22

SNMP

Answer 22

UDP 161, 162

Question 23

SQL Server

Answer 23

TCP / UDP 1433

Question 24

SQLnet

Answer 24

TCP 1521

Question 25

SSH

Answer 25

TCP 22

Question 26

Syslog

Answer 26

UDP 514

Question 27

Telnet

Answer 27

TCP 23

Question 28

TFTP

Answer 28

UDP 69

Question 29

UDP 67, 68

Answer 29

DHCP Dynamic Host Configuration Protocol: Automated configuration of IP address.

Question 30

TCP/UDP 53

Answer 30

DNS Domain Name System: Converts names to IP addresses

Question 31

TCP 20,21

Answer 31

FTP File Transfer Protocol tcp/20 (Active Mode Data) tcp/21 ( Control)

Question 32

TCP 80

Answer 32

HTTP Hypertext Transfer Protocol: Communication in the browser in the clear.

Question 33

TCP 443

Answer 33

HTTPS Hypertext Transfer Protocol Secure: Communication in the browser that is encrypted.

Question 34

TCP 143

Answer 34

IMAP Internet Message Access Protocol: Manage email inbox from multiple clients

Question 35

TCP 993

Answer 35

IMAP over SSL Internet Message Access Protocol: Manage email inbox from multiple clients over secure sockets layer

Question 36

TCP 389

Answer 36

LDAP Lightweight Directory Access Protocol: Store and retrieve information in a network directory

Question 37

TCP 636

Answer 37

LDAPS Lightweight Directory Access Protocol Secure: A non-standard implementation of LDAP over SSL

Question 38

UDP 123

Answer 38

NTP Network Time Protocol:

Question 39

TCP 110

Answer 39

POP3 Post Office Protocol: Basic mail transfer functionality

Question 40

TCP 995

Answer 40

POP3 over SSL Post Office Protocol over Secure Sockets Layer: Basic mail transfer functionality over SSL

Question 41

TCP / UDP 3389

Answer 41

RDP Remote Desktop Protocol: Can connect to an entire desktop or just an application.