README (1).md

description	A computer network is a digital communications network which allows nodes to share resources
icon	network-wired

Network Devices

Router		Its sole purpose is to connect devices outside of a LAN. It operates on the networking layer of the OSI model (Layer 3) of the OSI model.
Switch		A switch is a network device used to connect multiple devices (or nodes) within a Local Area Network (LAN). It operates on the data link layer (Layer 2) of the OSI model.
Firewall		A firewall is a network security device which is responsible for monitoring and control the network traffic based on configured rules. They can be placed 'inside' the network and 'outside' the network. Meaning, the firewall can filter traffic before it reaches the router, or after it has passed through the router. Firewalls are known as ‘next-generation firewalls’ when they include more modern and advanced filtering capabilties. Host-based firewalls are software applications that filter traffic entering and exiting a host machine, like a PC. Network firewalls are hardware devices that filter traffic between networks.