Your Home WiFi Is Probably Set Up Wrong

I've been in networking professionally for 15 years. I've designed enterprise networks, troubleshot outages at 2am, and configured more routers than I can count. When I look at most home networks, I see the same mistakes over and over.

None of this is hard. It's just stuff nobody tells you.

Change Your Router's Default Admin Password

Non-negotiable. Every router ships with a default admin password — usually something like "admin/admin" or printed on a sticker on the device. If you haven't changed it, anyone on your network could log into your router's admin panel and change whatever they want.

Change it to something strong. While you're in there, disable remote management if it's enabled.

Use 5GHz When You're Close to the Router

Most modern routers are dual-band: 2.4GHz and 5GHz. People default to 2.4GHz because it has longer range. But 5GHz has significantly higher throughput and less congestion from neighboring networks.

Rule of thumb: if you're within 30 feet of your router with no walls in between, use 5GHz. Further away or going through multiple walls? 2.4GHz penetrates better.

Put IoT Devices on a Guest Network

Smart TVs, smart speakers, robot vacuums, smart bulbs — these devices have a reputation for poor security practices and infrequent firmware updates. You do not want them on the same network as your laptop and phone.

Create a guest network and put all your IoT stuff on it. Most consumer routers support this. Devices on the guest network can't communicate with devices on your main network. If something gets compromised, the damage is contained.

Update Your Router Firmware

Log into your router admin panel and check for firmware updates. Routers get security vulnerabilities just like everything else, and most ISP-provided routers are running firmware from years ago with known exploits.

Some routers auto-update. Most don't. Check every few months.

Router Placement Matters

Put your router in a central location, elevated, away from microwaves and cordless phones. Don't put it in a closet. Don't put it in a cabinet. Don't put it on the floor.

If you have dead zones, look at a mesh system before buying a range extender. Range extenders typically cut your bandwidth in half. Mesh systems are an actual solution.

None of this is rocket science. It's the stuff you'd do if someone who actually knew networking lived in your house. Now that person is you.