Ports and Protocols

Question 1

FTP

Answer 1

File Transfer Protocol

Provides insecure file transfer

Port 20, 21

Question 2

SSH

Answer 2

Secure Shell

Provides secure remote control of another machine using a text-based environment

Port 22

Question 3

SFTP

Answer 3

Secure file transfer protocol

Provides secure file transfer

Port 22

Question 4

Telnet

Answer 4

Provides insecure remote control of another machine using a text-based environment

Port 23

Question 5

SMTP

Answer 5

Simple Mail Transfer Protocol

Provides the ability to send emails over the network

Port 25

Question 6

DNS

Answer 6

Domain Name System

Converts domain names to IP addresses, and IP addresses to domain names

Port 53

Question 7

DHCP

Answer 7

Dynamic Host Control Protocol

Automatically provides network parameters to your clients, such as their assigned IP address, subnet mask, default gateway, and the DNS server they should use

Port 67, 68

Question 8

TFTP

Answer 8

Trivial File Transfer Protocol

Used as a lightweight file transfer method for sending configuration files or network booting of an operating system

Port 69

Question 9

HTTP

Answer 9

Hypertext Transfer Protocol

Used for insecure web browsing

Port 80

Question 10

POP3

Answer 10

Post Office Protocol Version Three

Used for receiving incoming emails

Port 110

Question 11

NTP

Answer 11

Network Time Protocol

Used to keep accurate time for clients on a network

Port 123

Question 12

NetBIOS

Answer 12

Network Basic Input/Output System

Used for file or printer sharing in a windows network

Port 139

Question 13

IMAP

Answer 13

Internet Mail Application Protocol

A newer method for retrieving incoming emails which improves upon the older POP3

Port 143

Question 14

SNMP

Answer 14

Simple Network Management Protocol

Used to collect data about network devices and monitor their status

Port 161, 162

Question 15

LDAP

Answer 15

Lightweight Directory Access Protocol

Used to provide directory services to your network

Port 389

Question 16

HTTPS

Answer 16

Hyper Text Transfer Protocol - Secure

Used for secure web browsing

Port 443

Question 17

SMB

Answer 17

Server Message Block

Used for Windows file and printer sharing services

Port 445

Question 18

Syslog

Answer 18

System Logging Protocol

Used to send logging data back to a centralized server

Port 514

Question 19

SMTP TLS

Answer 19

Simple Mail Transfer Protocol Transport Layer Security

Secure and encrypted way to send emails

Port 587

Question 20

LDAPS

Answer 20

Lightweight Directory Access Protocol - Secure

Provides secure directory services

Port 636

Question 21

IMAP over SSL

Answer 21

Internet Message Access Protocol over SSL

Secure and encrypted way to receive emails

Port 993

Question 22

POP3 over SSL

Answer 22

Post Office Protocol Version 3 over SSL

Secure and encrypted way to receive emails

Port 995

Question 23

SQL

Answer 23

Structured Query Language Server Protocol

Used for Communication from a client to the database engine

Port 1433

Question 24

SQLnet Protocol

Answer 24

Used for communication from a client to an Oracle database

Port 1521

Question 25

MySQL

Answer 25

Used for communication from a client to the MySQL database engine

Port 3306

Question 26

RDP

Answer 26

Remote Desktop Protocol

Provides graphical remote control of another client or server

Port 3389

Question 27

SIP

Answer 27

Session Initiation Protocol

Used to initiate VoIP and video calls

Port 5060, 5061