Router
About 5 min read
Last updated: 2026-04-16
What Is a Router
A router is a networking device that controls data transfer between networks. In homes, it acts as a traffic controller connecting the internet to your household devices. The reason your smartphone, PC, and game console can all use the internet simultaneously is thanks to the router.
Key Router Functions
Router Security Settings
Key steps to strengthen your router's security:
- Change the admin panel password from the default (defaults like "admin/admin" are publicly known)
- Regularly update the firmware (includes vulnerability patches)
- Encrypt Wi-Fi with WPA3 or WPA2
- Disable remote management (prevents external configuration changes)
Modem vs. Router
A modem connects your ISP's line to your home network, while a router distributes the internet connection to multiple devices within your home. Today, most products combine both modem and router functions into a single unit.
For more on this topic, see our Public Wi-Fi Risks and How to Stay Safe.
Common Misconceptions
- A router only needs to be set up once
- Regular maintenance is required, including firmware updates and password changes.
- More expensive routers are more secure
- Price affects speed and connection capacity, but security depends on configuration. Even an affordable router is secure when properly configured.
Modem vs. Router Comparison
Modem
Connects the ISP line to the home network. Performs signal conversion.
Router
Distributes internet to multiple devices in the home. Includes NAT and firewall functions.