Ports and Protocols

Question 1

What is TCP

Answer 1

Transmission Control Protocol
- connection based, slow but reliable

Question 2

What is UDP

Answer 2

user Datagram protocol
- quicker but may drop packets

Question 3

What is a Protocol?

Answer 3

A Protocol is a set of rules that communication adheres to.

Question 4

What is a Port?

Answer 4

A Port is a logical access channel for communication of a certain type.

Question 5

What are the Standardized Port Ranges?

Answer 5

• 0- 1023 = Well known ports (most of the focus)
• 1024-49151 = Register port ranges (a few in this range)
• 49152 - 65535 = Dynamic port ranges

Question 6

Name and Port Number:
SMTP

Answer 6

Simple Mail Transfer Protocol
25

Question 7

Name and Port Number:
POPv3

Answer 7

Post Office Protocol v3
110

Question 8

Name and Port Number:
IMAP

Answer 8

Internet Message Application Protocol
143

Question 9

Name and Port Number:
HTTP

Answer 9

Hyper Text Transfer Protocol
80

Question 10

Name and Port Number:
HTTPS

Answer 10

Hyper Text Transfer Protocol
443

Question 11

Name and Port Number:
FTP

Answer 11

File Transfer Protocol
20 for requests
21 for commands

Question 12

Name and Port Number:
TFTP

Answer 12

Trivial File Transfer Protocol
69

Question 13

Name and Port Number:
Telnet

Answer 13

Telnet
23

Question 14

Name and Port Number:
SSH

Answer 14

SecureShell
22

Question 15

Name and Port Number:
RDP

Answer 15

Remote Desktop Protocol
3389

Question 16

Name and Port Number:
DNS

Answer 16

Domain Name System
53

Question 17

Name and Port Number:
NETBIOS

Answer 17

Network BIOS
Ports 137, 138, 139

Question 18

Name and Port Number:
DHCP

Answer 18

Dynamic Host Configuration Protocol
67 and 68

Question 19

Name and Port Number:
SNMP

Answer 19

Simple Network Management Protocol
161 and 162

Question 20

Name and Port Number:
LDAP

Answer 20

Lightweight Directory Access Protocol
389

Question 21

Name and Port Number:
SMB

Answer 21

Server Message Block
445