INDIVIDUAL PORTS AND THEIR FUNCTIONS LESSON 13

Question 1

FTP

Answer 1

PORT 21
The File Transfer Protocol (FTP) is a standard network protocol used to transfer computer files between a client and server on a computer network.

Question 2

SSH

Answer 2

PORT 22
Secure Shell, or SSH, is a cryptographic (encrypted) network protocol operating at layer 7 of the OSI Model to allow remote login and other network services to operate securely over an unsecured network.

Question 3

Telnet

Answer 3

PORT 23
Telnet is an application layer protocol used on the Internet or local area networks to provide a bidirectional interactive text-oriented communication facility using a virtual terminal connection.

Question 4

SMTP

Answer 4

PORT 25

Simple Mail Transfer Protocol (SMTP) is an Internet standard for electronic mail (email) transmission

Question 5

DNS

Answer 5

PORT 53
The Domain Name System (DNS) is a hierarchical decentralized naming system for computers, services, or any resource connected to the Internet or a private network.

Question 6

HTTP

Answer 6

PORT 80
The Hypertext Transfer Protocol (HTTP) is an application protocol for distributed, collaborative, hypermedia information systems.

Question 7

POP3

Answer 7

PORT 110
In computing, the Post Office Protocol (POP) is an application-layer Internet standard protocol used by local e-mail clients to retrieve e-mail from a remote server over a TCP/IP connection.

Question 8

IMAP

Answer 8

PORT 143
In computing, the Internet Message Access Protocol (IMAP) is an Internet standard protocol used by e-mail clients to retrieve e-mail messages from a mail server over a TCP/IP connection.

Question 9

SLP

Answer 9

PORT 427
The Service Location Protocol (SLP, srvloc) is a service discovery protocol that allows computers and other devices to find services in a local area network without prior configuration.

Question 10

HTTPS

Answer 10

PORT 443
HTTPS (also called HTTP over TLS, HTTP over SSL, and HTTP Secure is a protocol for secure communication over a computer network which is widely used on the Internet.

Question 11

SMB

Answer 11

PORT 445, 137-139
In computer networking, Server Message Block (SMB), one version of which was also known as Common Internet File System (CIFS, /ˈsɪfs/), operates as an application-layer network protocol mainly used for providing shared access to files, printers, and serial ports and miscellaneous communications between nodes on a network.

Question 12

AFP

Answer 12

PORT 548
The Apple Filing Protocol (AFP), formerly AppleTalk Filing Protocol, is a proprietary network protocol that offers file services for Mac OS X and original Mac OS.

Question 13

RDP

Answer 13

PORT 3389
Remote Desktop Protocol (RDP) is a proprietary protocol developed by Microsoft, which provides a user with a graphical interface to connect to another computer over a network connection.