Ports And Protocols

Question 1

FTP

Answer 1

FTP
Ports 20, 21
Provides insecure file transfers

Question 2

SSH

Answer 2

Secure Shell
Port 22
Provide secure remote control of another machine using text-based environment

Question 3

SFTP

Answer 3

Secure file transfer protocol
Port 22
Provide secure file transfer using SSH

Question 4

Telnet

Answer 4

Port 23
Insecure remote control to another machine using a text-based environment
No encryption, sent in the clear. Do not use

Question 5

SMTP

Answer 5

Simple mail transfer protocol
Port 25
Provides ability to SEND emails over the network

Question 6

DNS

Answer 6

Domain name system
Port 53
Converts IP addresses to domain names and vice versa

Question 7

DHCP

Answer 7

Dynamic host control protocol
Port 67, 68
Automatically provides network parameters to your clients, such as their assigned IP address, subnet mask, default gateway, DNS server they should use

Question 8

TFTP

Answer 8

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

Question 9

HTTP

Answer 9

Hypertext transfer protocol
Port 80
Used for insecure web browsing

Question 10

POP3

Answer 10

Post office protocol version 3
Port 110
Used for RECEIVING incoming emails

Question 11

NTP

Answer 11

Network time protocol
Port 123
Used to keep accurate time for clients on a network

Question 12

NetBIOS

Answer 12

Network basic input/output system
Port 139
Used for file or printer sharing in a Windows network

Question 13

IMAP

Answer 13

Internet mail application protocol
Port 143
Newer method of retrieving emails which improves upon the older POP3
Keeps message status synced across devices

Question 14

SNMP

Answer 14

Simple network management protocol
Ports 161, 162
Used to collect data about network devices and monitor their status

Question 15

LDAP

Answer 15

Lightweight directory access protocol
Port 389
Used to provide directory services to your network

Question 16

HTTPS

Answer 16

Hypertext transfer protocol secure
Port 443
Secure web browsing using encrypted tunnel (TLS or SSL)

Question 17

SMB

Answer 17

Server message block
Port 445
Used for Windows file and printer sharing services

Question 18

Syslog

Answer 18

System logging
Port 514
Used to send logging data back to a centralized server

Question 19

SMTP TLS

Answer 19

Port 587
Secure and encrypted way to send emails

Question 20

LDAPS

Answer 20

LDAP secure
Port 636
Provide secure directory services

Question 21

IMAP over SSL

Answer 21

Port 993
Secure and encrypted way to receive emails

Question 22

POP3 over SSL

Answer 22

Port 995
Secure and encrypted way to receive emails

Question 23

SQL

Answer 23

Structured query language
Port 1433
Used for communication from a client to the database engine

Question 24

Oracle

Answer 24

Port 1521
Used for communication from a client to an Oracle database

Question 25

MySQL

Answer 25

Port 3306 Used for communication from a client to the MySQL database engine

Question 26

RDP

Answer 26

Remote desktop protocol Port 3389 Provides graphical remote control of another client or server

Question 27

SIP

Answer 27

Session initiation protocol Ports 5060, 5061 Used to initiate VoIP and video calls

Question 28

Port 5061

Answer 28

SIP

Question 29

Port 5060

Answer 29

SIP

Question 30

Port 3389

Answer 30

RDP

Question 31

Port 3306

Answer 31

MySQL

Question 32

Port 1521

Answer 32

Oracle

Question 33

Port 1433

Answer 33

SQL

Question 34

Port 995

Answer 34

POP3 over SSL

Question 35

Port 993

Answer 35

IMAP over SSL

Question 36

Port 636

Answer 36

LDAPS

Question 37

Port 587

Answer 37

SMTP TLS

Question 38

Port 514

Answer 38

Syslog

Question 39

Port 445

Answer 39

SMB

Question 40

Port 443

Answer 40

Https

Question 41

Port 389

Answer 41

LDAP

Question 42

Port 162

Answer 42

SNMP

Question 43

Port 161

Answer 43

SNMP

Question 44

Port 143

Answer 44

IMAP

Question 45

Port 139

Answer 45

NetBIOS

Question 46

Port 123

Answer 46

NTP

Question 47

Port 110

Answer 47

POP3

Question 48

Port 80

Answer 48

HTTP

Question 49

Port 69

Answer 49

TFTP

Question 50

Port 68

Answer 50

DHCP

Question 51

Port 67

Answer 51

DHCP

Question 52

Port 53

Answer 52

DNS

Question 53

Port 25

Answer 53

SMTP

Question 54

Port 23

Answer 54

Telnet

Question 55

Port 22

Answer 55

SSH

Question 56

Port 21

Answer 56

FTP

Question 57

Port 20

Answer 57

FTP

Question 58

Ports

Answer 58

Logical opening on a system representing a service or application that is listening and waiting for traffic Numbered 0-65,535

Question 59

Well-Known/Reserved Ports

Answer 59

0-1023

Question 60

Ephemeral Ports

Answer 60

1024-65,535

Question 61

Port 1812

Answer 61

RADIUS Authentication Messages

Question 62

Port 1813

Answer 62

RADIUS Accounting Messages

Question 63

RADIUS

Answer 63

Ports 1812, 1813 Authenticate users, authorize them to services, and account for their usage of those services

Question 64

Port 49

Answer 64

TACACS+

Question 65

TACACS+

Answer 65

Port 49 Used to perform the role of an authenticator in an 802.1x network

Question 66

VNC

Answer 66

Port 5900 Remote access method

Question 67

Port 5900

Answer 67

VNC

Question 68

Metasploit

Answer 68

Commonly used exploit framework for penetration testing and red team operations. Metasploit can be used to easily run exploits on a machine and connect back to a meterpreter shell. Default port is 4444

Question 69

Port 4444

Answer 69

Metasploit

Question 70

When initiating a new SSH connection, what is transferred between the client and the server?

Answer 70

The keys and encryption algorithm that will be used to encrypt the connection

Question 71

What is an SSH Key Authentication?

Answer 71

A passwordless SSH login method using a cryptographic key rather than a password.