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FirewallsHigh priority

Enable Windows Defender Firewall

Make sure Windows Defender Firewall is turned on for both private and public networks on your Windows computer.

Why this matters

The software firewall on your PC adds a second layer of protection, especially when you are on a public or unfamiliar Wi-Fi network.

How to do it

  1. Open Windows Security (search for it in the Start menu)
  2. Click 'Firewall & network protection'
  3. Check that the firewall is On for Domain, Private, and Public networks
  4. Click any that show 'Off' and turn them on

Cyber Essentials framework

This task falls under the Firewallscontrol — one of five areas assessed in the UK's Cyber Essentials scheme. Completing it counts toward your Cyber Essentials alignment.

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