Network Protocols and Ports

Vocabulary terms for network protocols and their corresponding port numbers strictly based on the lecture transcript.

FTP

File Transfer Protocol $20/21$

The standard protocol for transfering files between client and server over a computer network

20: Data Port, handles data transferring (downloads, uploads, and directory listing) Moving Truck

21: Control Port: Used to send commands between the client and server. (Conversation on what to transfer, commands)

SFTP

TCP 22 Secure File Transfer Protocol

Encrypts the entire connection, including usernames, passwords, and files.

Uses SSH for secure file transfers

22

Secure Shell TCP

• Used for secure remote access to another computer or server.

• Encrypts all traffic, including usernames and passwords.

• Commonly used by network administrators to manage servers remotely.

23

Telnet TCP

UNENCRYPTED version of ssh, passwords login info sent in plain text

25

Simple Mail transfer Protocol (SMTP) FTP

• Used for sending email between mail servers.

• Also used by email clients to submit outgoing mail in some setups.

• Does not retrieve email.

67/68

Dynamic Host Configuration Protocol (DHCP)

Automatically assigns network devices on the network thei own ip

69

Trivial File Transfer Protocol (TFTP)

Hypertext Transfer Protocol ( )

$$80$$

Network time Potocol (NTP)

$$123$$

Simple Network Management Protocol ( )

$$161/162$$

Light weight Directory - Access Protocol (0)

$$389$$

Hypertext Transfer Protocol Secure (TPS)

$$443$$

Server Message Block (MB)

$$445$$

Syslog

$$514$$

Simple Mail Transfer Protocol secure (SMTP)

$$587$$

Light weight Directory Access Protocol over SSL (ADD)

$$636$$

Structured Query Language ( ) Server

$$1433$$

Remote Desktop Protocol (RDP)

$$3389$$

Session Initiation Protocol ( )

$$5060/5061$$