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Secure Your Office Wi-Fi

Your Wi-Fi is the front door to every computer, printer and file in your office. A few settings on your router make a big difference in keeping strangers out.

1. Use WPA2 or WPA3 encryption

In your router's wireless settings, the security mode should be WPA3, WPA2/WPA3 (mixed) or at least WPA2-AES. Avoid WEP, WPA (without the 2 or 3) and TKIP; they are outdated and easy to break. Never leave the network "Open."

2. Change the router's admin password

The admin password lets someone change every setting on your router. It is different from the Wi-Fi password.

  1. Find the router's address and default login, often printed on a label on the router.
  2. Sign in from a computer connected to the network.
  3. Change the admin password to a long, unique one and store it in a password manager.
  4. If the option exists, turn off remote management from the internet unless you need it.

Many internet providers manage the router for you through an app. In that case, change the admin and Wi-Fi passwords in that app.

3. Use a strong Wi-Fi password

Choose a long passphrase, at least 12 to 16 characters, such as several unrelated words. Do not use the business name, address or phone number. Change it when an employee leaves or when you suspect it was shared too widely.

4. Create a guest network

A guest network gives visitors internet access without access to your office computers, printers or shared files. Use it for:

  • Customers and visitors.
  • Personal phones and tablets of staff.
  • "Smart" devices such as TVs, cameras, speakers and thermostats, which are often less secure.

Turn on guest isolation (sometimes called "AP isolation" or "client isolation") if your router offers it, and give the guest network its own password.

5. Do not share the main password

Keep the main Wi-Fi password for company computers only. Do not post it on the wall or print it on receipts. If visitors need internet, give them the guest password.

6. Keep the firmware updated

Firmware is the router's built-in software. Updates fix security holes.

  • Turn on automatic updates if your router supports them.
  • Otherwise, check for updates every few months in the router settings.
  • If the manufacturer no longer releases updates for your model, it is time to plan a replacement.

7. Turn off WPS

WPS (Wi-Fi Protected Setup) lets devices join with a button or PIN. It is convenient but has known weaknesses. Turn it off in the wireless settings.

Changing Wi-Fi settings will disconnect devices, including printers and cameras, and each one will need the new password. Plan changes for a quiet time, and write down which devices need to be reconnected.

Quick checklist

  • WPA2 or WPA3 security: on.
  • Router admin password: changed from default.
  • Guest network for visitors and smart devices: on.
  • Firmware: up to date.
  • WPS and unneeded remote management: off.

Published on - 01-01-1970 05:30am

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