What does a router do?

A router is the device that connects your home to the internet and allows multiple devices – such as smartphones, laptops, gaming consoles, and smart TVs – to all access the web. It acts as the middleman between your internet connection and the devices in your home.

How does a router work?

A router directs internet traffic between your modem (which brings the internet into your home) and your connected devices. It does this by assigning a unique local IP address to each device, ensuring smooth communication without interference.

Most modern routers also provide Wi-Fi, meaning you don’t need to rely on physical cables to get online. They use radio signals to transmit data, allowing for wireless internet access anywhere within range.

Router v modem: what's the difference?

While often confused, a router and a modem do different things:

  • Modem – Brings the internet into your home from your broadband provider.
  • Router – Distributes that internet connection to your devices, often via Wi-Fi.

Some broadband providers supply a combined modem-router, which does both jobs in one device.

Can you use your own router with every provider?

When you sign up for a broadband deal, you’ll get a free router from your new provider. While the majority of these do a pretty decent job, they tend to be on the more basic side and you might find you get a better performance by using your own equipment.

Most providers will let you use a third-party router, but some make this more complicated than others. Find out more in our guide to using your own broadband router.

In most cases you can use your own router instead of the one provided by your broadband provider – even if they say you can’t! – but it depends on the type of connection and the provider’s policies. Some ISPs allow third-party routers with minimal setup, while others require specific configurations or may restrict compatibility. Always check with your provider before purchasing a new router to ensure it’s compatible with their network

Choosing the right router

When picking a router, consider:

  • Speed & Wi-Fi standard – Look for routers supporting Wi-Fi 6 for better speeds and connectivity.
  • Range – Ensure it covers your home’s size, or consider a mesh system for larger spaces.
  • Security features – WPA3 encryption and built-in firewalls help keep your network safe.
  • Dual-band or Tri-band – Helps reduce congestion, especially in busy households.

The best place to put your router

Where you place your router can make a big impact your Wi-Fi performance. For the best coverage and speed, consider these placement tips:

  • Central location – Position your router in the middle of your home to get an even coverage in all rooms.
  • Elevated position – Place the router on a shelf or mounted on a wall rather than on the floor to avoid signal obstruction.
  • Away from interference – Keep the router away from electronic devices such as microwaves, cordless phones, and baby monitors, which can interfere with Wi-Fi signals.
  • Minimal obstacles – Avoid placing the router behind thick walls, metal objects, or inside cabinets, as these can weaken the signal.
  • Near high-usage areas – If possible, place the router close to where you use Wi-Fi the most, such as the living room or home office.

Keeping your router secure

Your internet router isn’t just the place where you can boost your home’s Wi-Fi strength. It’s a vital security hub, too. And if there are weak spots in its security, your settings could be hijacked and leave you more open to identity theft, fraud and account hacking.

To enhance security, always change the default admin password, enable WPA3 encryption, keep your router’s firmware updated, and disable remote access features unless necessary. Investing in a router with strong security features can significantly reduce the risk of cyberattacks.

Find out more about easy wins to keep your network safe.

 

Router FAQ

What is the IP address for my router? Different devices and operating systems vary in their steps to finding a router's IP address. In Windows, type Command Prompt in the search bar > Enter > type ipconfig in the command line > Enter. The router's IP address displays next to Default Gateway.

What does a router's light indicate?

A flashing light means the router is initialising or exchanging data. A solid green or orange light means the router is on but not in use. A red light or off light usually means a service isn't working.

How do I reset my router to factory settings?

You can use a paperclip or pin to press the reset button on the back of the router. 

How often should I restart my router?

Restarting your router once every few weeks can help maintain optimal performance and resolve connectivity issues.

Why is my internet slow even with a good router?

Slow internet could be due to network congestion, outdated router firmware, interference from other devices, or limitations from your broadband provider.

Do routers wear out over time?

Yes, routers can degrade over time due to hardware aging and outdated firmware. If your router is more than five years old, consider upgrading to a newer model.

 

Need a new router? Compare broadband deals with routers included to find the best option for your home.