Ports

Question 1

Port 21

Answer 1

File Transfer Protocol (FTP)

Used to transfer files from host to host

TCP

Question 2

Port 22

Answer 2

SSH, SCP, SFTP

Provides secure copy functions, file transfers and file transfer capabil

TCP

Question 3

Port 23

Answer 3

Telnet

Provides insecure remote control of another machine using a text based e

TCP

Question 4

Port 25

Answer 4

Simple Mail Transfer Protocol (SMTP)

Provides the ability to send emails over the network

TCP

Question 5

Port 53

Answer 5

Domain Name System (DNS)

Translates domain names into IP addresses

TCP and UDP

Question 6

Port 69

Answer 6

Trivial file transfer protocol (TFTP)
Used as a lightweight file transfer method for sending configuration files or network booting of an operating system

UDP

Question 7

Port 80

Answer 7

Hypertext Transfer Protocol (HTTP)

Used for insecure web browsing

TCP

Question 8

Port 88

Answer 8

Kerberos

Network authentication protocol

UDP

Question 9

Port 110

Answer 9

Post office protocol version three (POP3)

Responsible for retrieving email from a server

TCP

Question 10

Port 119

Answer 10

Network news transfer protocol (NNTP)

Used for accessing newsgroups

TCP

Question 11

Port 135

Answer 11

Remote procedure call (RPC)

Facilities communication between different system processes

TCP and UDP

Question 12

Ports 137, 138, 139

Answer 12

NetBIOS

networking protocol suite

TCP and UDP

Question 13

Port 143

Answer 13

Internet Message Access Protocol (IMAP)

Allows access to email messages on a server

TCP

Question 14

Port 161

Answer 14

Simple Network Management Protocol (SNMP)

Manages network devices

UDP

Question 15

Port 162

Answer 15

SNMP Trap

Responsible for sending SNMP Trap messages

UDP

Question 16

Port 389

Answer 16

Lightweight Directory Access Protocol (LDAP)

Facilitates directory services

TCP

Question 17

Port 443

Answer 17

HTTP Secure (HTTPS)

Provides secure web communication

TCP

Question 18

Port 445

Answer 18

Server Message Block (SMB)

Used for file and priner sharing over a network

TCP

Question 19

Ports 465, 587

Answer 19

SMTP Secure (SMTPS)

Provides secure SMTP communication

TCP

Question 20

Port 514

Answer 20

Syslog

Used for sending log messages

UDP

Question 21

Port 636

Answer 21

LDAP Secure (LDAPS)

LDAP communications over SSL/TLS

TCP

Question 22

Port 993

Answer 22

Internet Message Access Protocoll OVer SSL/TLS (IMAPS)

Used for secure email retrieval

TCP

Question 23

Port 995

Answer 23

Post office protocol version 3 over SSL/TLS (POP3S)

Used for secure email retrieval

TCP

Question 24

Port 1433

Answer 24

Microsoft SQL

Used to facilitate communication with Microsoft SQL server

TCP

Question 25

Port 1645, 1646

Answer 25

Radius TCP

Used for remote authentication, authorization and accounting

TCP

Question 26

Port 1812, 1813

Answer 26

Radius UDP
Used for remote authentication, authorization and accounting as defined by the internet engineering task force (IETF)

UDP

Question 27

Port 3389

Answer 27

Remote Desktop Protocol (RDP)

Enables remote desktop access

TCP

Question 28

Port 6514

Answer 28

Syslog TLS
Used in a secure syslog that uses SSL/TLS to encrpyt the IP packets using a certificate before sending them across the IP network to the syslog collector

TCP