Network devices

Network devices

What makes the network

Begin!

What are network devices?

The devices that do all the hard work

Network devices are physical devices that allow hardware on a computer network to communicate and interact with each other. Network devices like hubs, repeaters, bridges, switches and routers help manage and direct data flow in a network.

End devices, like computers, use Network Interface Cards (NICs) to connect to networks wired, or wirelessly.

Router

I will connect everyone

A router is a device that connects two or more networks or subnetworks. It serves two primary functions: managing traffic between these networks by forwarding data packets to their intended IP addresses, and allowing multiple devices to use the same Internet connection.

Switch

I will send this to who this belongs to

A network switch connects devices within a network (often a local area network, or LAN*) and forwards data packets to and from those devices. Unlike a router, a switch only sends data to the single device it is intended for (which may be another switch, a router, or a user's computer), not to networks of multiple devices.

Hub

I will send this to everyone!

A hub is a device that links multiple computers and devices together. Hubs can also be referred to as repeaters or concentrators, and they serve as the center of a local area network (LAN). In a hub, each connected device is on the same subnet and receives all data sent to the hub. This mean that, unlike the switch, the data is sent to all end devices.

Firewall

you shall not pass!

A firewall is a network security device that separates a trusted internal network from an external network deemed untrustworthy, such as the Internet. It regulates incoming and outgoing network traffic based on preset security rules. Firewalls are paramount in shielding networks from unauthorised access, harmful activities and potential threats, and can exist as hardware, software, software-as-a-service (SaaS), or public or private (virtual) cloud.

wireless Access Point

Wi-fi!

Wireless access pointsprovide wireless connectivity in various settings, including homes, offices, educational institutions, and public places. They eliminate the need for physical cables, offering flexibility and convenience. When a wireless device wants to connect to a network, it communicates with the closest WiFi access point. The WAP receives the signal and transmits it to the wired network, thereby establishing a connection. This access point acts as a bridge, converting the wireless signals into wired signals and vice versa.