Ports and Protocols

Question 1

File Transfer Protocol (FTP)

Answer 1

Ports 20, 21; provides insecure file transfers

Question 2

Secure Shell (SSH)

Answer 2

Port 22; provides secure remote control of another machine using a text-based environment

Question 3

Secure File Transfer Protocol (SFTP)

Answer 3

Port 22; provides secure file transfers

Question 4

Telnet

Answer 4

Port 23; provides insecure remote control of another machine using a text-based environment

Question 5

Simple Mail Transfer Protocol (SMTP)

Answer 5

Port 25; provides the ability to send emails over the network

Question 6

Domain Name Service (DNS)

Answer 6

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

Question 7

Dynamic Host Control Protocol (DHCP)

Answer 7

Ports 67, 68; Automatically provides network parameters to your clients, such as their assigned IP address, subnet mask, default gateway, and the DNS server they should use

Question 8

Trivial File Transfer Protocol (TFTP)

Answer 8

Port 69; Used as a lightweight file transfer method for sending configuration files or network booting of an operating system

Question 9

Hypertext Transfer Protocol (HTTP)

Answer 9

Port 80; Used for insecure web browsing

Question 10

Post Office Protocol Version Three (POP3)

Answer 10

Port 110; used for receiving incoming emails

Question 11

Network Time Protocol (NTP)

Answer 11

Port 123; used to keep accurate time for clients on a network

Question 12

Network Basic Input/Output System (NetBIOS)

Answer 12

Port 139; Used for file or printer sharing in a Windows Network

Question 13

Internet Mail Application Protocol (IMAP)

Answer 13

Port 143; a newer method of retrieving incoming emails which improves upon the older POP3

Question 14

Simple Network Management Protocol (SNMP)

Answer 14

Ports 161, 162; Used to collect data about network devices and monitor their status

Question 15

Lightweight Directory Access Protocol (LDAP)

Answer 15

Port 389; used to provide directory services to your network

Question 16

Hypertext Transfer Protocol - Secure (HTTPS)

Answer 16

Port 443; used for secure web browsing

Question 17

Server Message Block (SMB)

Answer 17

Port 445; used for Windows file and printer sharing services

Question 18

System Logging Protocol (Syslog)

Answer 18

Port 514; used to send logging data back to a centralized server

Question 19

Simple Mail Transfer Protocol Transport Layer Security (SMTP TLS)

Answer 19

Port 587; secure and encrypted way to send emails

Question 20

Lightweight Directory Access Protocol - Secure (LDAPS)

Answer 20

Port 636; provides secure directory services

Question 21

Internet Message Access Protocol over SSL (IMAP over SSL)

Answer 21

Port 993; secure and encrypted way to receive emails

Question 22

Post Office Protocol Version 3 over SSL (POP3 over SSL)

Answer 22

Port 995; Secure and encrypted way to receive emails

Question 23

Structure Query Language Server Protocol (SQL)

Answer 23

Port 1433; Used for communication from a client to the database engine

Question 24

SQLnet Protocol

Answer 24

Port 1521; used for communication from a client to an Oracle database

Question 25

MySQL

Answer 25

Port 3306; open source and used for communication from a client to the MySQL database engine

Question 26

Remote Desktop Protocol (RDP)

Answer 26

Port 3389; Provides graphical remote control of another client or server

Question 27

Session Initiation Protocol (SIP)

Answer 27

Ports 5060, 5061; used to initiate VoIP and video calls