Windows Subsystem for Linux 2 bypasses the Windows 10 Firewall

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Windows Subsystem for Linux 2 bypasses the Windows 10 Firewall

Windows Subsystem for Linux 2 bypasses the Windows 10 Firewall

The Windows Subsystem for Linux 2 will bypass the Windows 10 firewall and any configured rules, raising security concerns for those who use the feature - the main concern being a lack of awareness of this change.

In a blog post today, Mullvad VPN explained that their product includes an 'Always require VPN' option that blocks Internet access via the Windows Firewall unless connected to the VPN.

After Mullvad received a tip from a user, it was determined that WSL2 Linux distributions bypass the Windows 10 firewall and its configured rules, and prevent the VPN's  'Always require VPN' security feature from working.

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