Router
A router is a device that connects your home or office network to the internet. It directs data between your devices and the websites you visit, making sure information goes to the right place. Without a router, multiple devices would not be able to share one internet connection.
How it works
When you open a website or use an app, your device sends a request through the router. The router forwards this request to your internet provider and then sends the response back to the correct device. If several devices are connected at the same time, the router manages all traffic and keeps everything organized.
What a router does
A router helps with:
- sharing internet between devices
- connecting Wi-Fi and wired devices
- managing network traffic
- improving connection stability
Most routers also include basic security features.
Router vs Modem
A modem connects your home to the internet service provider.
A router distributes that internet connection to your devices.
In many homes, both functions are combined into one device.
Wired and Wireless routers
- Wired routers connect devices using Ethernet cables
- Wireless routers provide Wi-Fi for phones, laptops, and smart devices
Most modern routers support both.
Security and routers
Routers help protect your network by using passwords, firewalls, and encryption. Changing the default password and keeping the router updated improves security.
A simple example
Think of a router like a traffic controller. It decides where each piece of data should go and prevents collisions.
Related terms
- What is IP Address?
- What is DNS?
- What is Modem?
Source
Information simplified from the Wikipedia article “Router (computing)”.