Port Numbers

Question 1

SSH
Secure Shell
Encrypted Console Access

Answer 1

TCP 22

Question 2

Telnet
Telecommunications Network
Insecure Console Access

Answer 2

TCP 23

Question 3

SMTP
Simple Mail Transfer Protocol
Transfer Email between email servers

Answer 3

TCP 25

Question 4

DNS
Domain Name Server
Converts domain names to IP addresses

Answer 4

TCP/UDP 53

Question 5

HTTP
HyperText Transfer Protocol
Web server communication

Answer 5

TCP 80

Question 6

POP3
Post Office Protocol
Receive email into email client

Answer 6

TCP 110

Question 7

Netbios
Register remove find windows service by name
Name service

Answer 7

UDP 137

Question 8

HTTPS
Hyper Text Transfer Protocol Secure
Web server communication with encryption

Answer 8

TCP 443

Question 9

FTP Control Port
File Transfer Protocol
Sends receives files between systems

Answer 9

TCP
Active 20
Control 21

Question 10

RDP
Remote Desktop Protocol
Graphical display of remote devices

Answer 10

TCP 3389

Question 11

SMB
Server Message Block
Windows files transfers and printer sharing

Answer 11

TCP 445

Question 12

SLP
Service Location Protocol
Find Mac OS services by name

Answer 12

TCP/UDP 427

Question 13

AFP
Apple Filing Protocol
Mac OS file transfers

Answer 13

TCP 548

Question 14

IMAP4
Internet Message Access Protocol
A newer email client protocol

Answer 14

TCP 143

Question 15

Netbios
Session service
Windows connection orientated data transfer

Answer 15

TCP 139

Question 16

Netbios
Datagram service
Windows connection less data transfer

Answer 16

UDP 138

Question 17

IMAP over SSL

Answer 17

TCP 993