Common Ports and Services

Question 1

20

Answer 1

FTP (File Transfer Protocol) Data

a standard network protocol used for the transfer of computer files between a client and server on a computer network.

Question 2

21

Answer 2

FTP (File Transfer Protocol) Control

a standard network protocol used for the transfer of computer files between a client and server on a computer network.

Question 3

22

Answer 3

SSH (Secure Shell)

is a cryptographic network protocol for operating network services securely over an unsecured network.

Question 4

23

Answer 4

Telnet

is an application protocol used on the Internet or local area network to provide a bidirectional interactive text-oriented communication facility using a virtual terminal connection.

Question 5

25

Answer 5

SMTP (Simple Mail Transfer Protocol)

is a communication protocol for electronic mail transmission.

Question 6

53

Answer 6

DNS Domain Name System)

is a hierarchical and decentralized naming system for computers, services, or other resources connected to the Internet or a private network.

Question 7

67

Answer 7

DHCP (Dynamic Host Configuration Protocol) Server

is a network management protocol used on Internet Protocol networks whereby a DHCP server dynamically assigns an IP address and other network configuration parameters to each device on a network so they can communicate with other IP networks.

Question 8

68

Answer 8

DHCP (Dynamic Host Configuration Protocol) Client

is a network management protocol used on Internet Protocol networks whereby a DHCP server dynamically assigns an IP address and other network configuration parameters to each device on a network so they can communicate with other IP networks.

Question 9

69

Answer 9

TFTP (Trivial File Transfer Protocol)

is a simple lockstep File Transfer Protocol which allows a client to get a file from or put a file onto a remote host.

Question 10

80

Answer 10

HTTP (Hypertext Transfer Protocol)

is an application protocol for distributed, collaborative, hypermedia information systems.

Question 11

88

Answer 11

Kerberos

is a computer-network authentication protocol that works on the basis of tickets to allow nodes communicating over a non-secure network to prove their identity to one another in a secure manner.

Question 12

110

Answer 12

POP3 (Post Office Protocol version 3)

is an application-layer Internet standard protocol used by e-mail clients to retrieve e-mail from a mail server.

Question 13

123

Answer 13

NTP (Network Time Protocol)

is a networking protocol for clock synchronization between computer systems over packet-switched, variable-latency data networks.

Question 14

135

Answer 14

Microsoft EPMAP (End Point Mapper)

also known as DCE/RPC Locator service, used to remotely manage services including DHCP server, DNS server and WINS.

Question 15

137

Answer 15

NetBIOS (Network Basic Input/Output System) Name Service

provides services related to the session layer of the OSI model allowing applications on separate computers to communicate over a local area network.

Question 16

138

Answer 16

NetBIOS (Network Basic Input/Output System) Datagram Service

provides services related to the session layer of the OSI model allowing applications on separate computers to communicate over a local area network.

Question 17

139

Answer 17

NetBIOS (Network Basic Input/Output System) Session Service

provides services related to the session layer of the OSI model allowing applications on separate computers to communicate over a local area network.

Question 18

143

Answer 18

IMAP (Internet Message Access Protocol)

is an Internet standard protocol used by email clients to retrieve email messages from a mail server over a TCP/IP connection.

Question 19

161

Answer 19

SNMP (Simple Network Message Protocol)

is an Internet Standard protocol for collecting and organizing information about managed devices on IP networks and for modifying that information to change device behavior.

Question 20

162

Answer 20

SNMP traps

is an Internet Standard protocol for collecting and organizing information about managed devices on IP networks and for modifying that information to change device behavior.

SNMP traps enable an agent to notify the management station of significant events by way of an unsolicited SNMP message.

Question 21

389

Answer 21

LDAP (Lightweight Data Acquisition Protocol)

is an open, vendor-neutral, industry standard application protocol for accessing and maintaining distributed directory information services over an Internet Protocol (IP) network.

Question 22

443

Answer 22

HTTPS Hypertext Transfer Protocol over TLS/SSL)

is an extension of the Hypertext Transfer Protocol (HTTP). It is used for secure communication over a computer network, and is widely used on the Internet. In HTTPS, the communication protocol is encrypted using Transport Layer Security (TLS) or, formerly, its predecessor, Secure Sockets Layer (SSL).

Question 23

445

Answer 23

Microsoft Active Directory and Server Message Block

AD is a directory service developed by Microsoft for Windows domain networks. It is included in most Windows Server operating systems as a set of processes and services.

SMB is a network communication protocol for providing shared access to files, printers, and serial ports between nodes on a network. It also provides an authenticated inter-process communication mechanism.

Question 24

500

Answer 24

ISAKMP / IKE (Internet Security Association and Key Management Protocol) / (Internet Key Exchange)

ISAKMP is a protocol defined by RFC 2408 for establishing Security association (SA) and cryptographic keys in an Internet environment.

IKE is the protocol used to set up a security association (SA) in the IPsec protocol suite.

Question 25

1433

Answer 25

Microsoft SQL Server

is a relational database management system developed by Microsoft. As a database server, it is a software product with the primary function of storing and retrieving data as requested by other software applications—which may run either on the same computer or on another computer across a network.

Question 26

1434

Answer 26

Microsoft SQL Monitor

is a relational database management system developed by Microsoft. As a database server, it is a software product with the primary function of storing and retrieving data as requested by other software applications—which may run either on the same computer or on another computer across a network.

Question 27

1521

Answer 27

Oracle Database Listener

is a proprietary multi-model database management system produced and marketed by Oracle Corporation.

Question 28

1812

Answer 28

RADIUS (Remote Authentication Dial-In User Service) Authentication Prototcol

is a networking protocol, operating on port 1812 that provides centralized Authentication, Authorization, and Accounting (AAA or Triple A) management for users who connect and use a network service.

Question 29

1813

Answer 29

RADIUS (Remote Authentication Dial-In User Service) Accounting Protocol

is a networking protocol, operating on port 1812 that provides centralized Authentication, Authorization, and Accounting (AAA or Triple A) management for users who connect and use a network service.