Accessing Windows host from WSL2

Feb 14, 2024#WSL2754

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Environment setup: WSL2 with Ubuntu 22.04 on Windows 11 Professional. To allow WSL2 access to Windows host, add a firewall rule in PowerShell. Test by pinging Windows host from WSL2. Reference link provided.

Environment Introduction#

WSL2: Ubuntu 22.04
Windows Host: Win11 Professional Edition

IP Address of Windows Host#

In WSL2, use the following command:

cat /etc/resolv.conf

Accessing Windows Host from WSL2#

By default, the Windows host firewall will block applications in WSL2 from accessing the Windows network.
Solution: Add a firewall rule to allow WSL2 to access Windows.

Run PowerShell as an administrator and enter the following command:

New-NetFirewallRule -DisplayName "WSL" -Direction Inbound  -InterfaceAlias "vEthernet (WSL)"  -Action Allow

Note: InterfaceAlias can be checked using the ipconfig command

Test if the firewall rule is added successfully.
Ping the Windows host from WSL2, if successful, it means the rule was added successfully.

References#

https://github.com/microsoft/WSL/issues/4585