Ports
Port 20/21
File Transfer Protocol (FTP)
A group of computers or devices connected together to share info and resources
Network
a network that connects devices in a small area
LAN
A computer or system that provides services or resources to other computers in the network like storing files
Server
used for browsing the web
hppts or http
Port 80
Hypertext Transfer Protocol (HTTP)
A security tool that helps to protect as network by blocking unauthorized access
Firewall
A network that connects devices over large distances like cities or countries
WAN
A device that requests services or resources from a server on a network
Client
this protocol guarantees message delivery
TCP (transmission control protocol)
Port 53
Domain Name System (DNS)
A global network of smaller networks that connects millions of computers and devices worldwide
Internet
A system that translates website names into ip addresses so you can visit websites easily
DNS
A unique number assigned to each device on a network, like a home address for computers
IP Address
this protocol does not guarantee packet delivery
UDP (user datagram protocol)
Port 443
Hypertext Transfer Protocol Secure (HTTPS)
A command used to test if a device is connected to a network and how long it takes data to travel between devices
Ping
a company that provides internet access to homes and businesses
ISP
A small piece of data that is sent across the network multiple packet make up larger data like a message or a video
Packet
used for transferring files
FTP
Port 23
Telnet
he amount of data that can be sent over a network at one time, similar to how wide a road is for cars
Bandwidth
The address of the webpage or file on the internet like a websites name
URL
A device that connects the network to the internet by converting signals between digital devices and the internet service provider
Modem
A set of rules or standards that allow devices to communicate with each other over a network. In computer networking protocols define how data is formatted, transmitted, and received so that different devices can understand and exchange info
Protocol