port-forward-off.bat

netsh.exe interface portproxy delete v4tov4 8000
netsh.exe interface portproxy show v4tov4
pause

port-forward-on.bat

FOR /F "usebackq" %%i in (`wsl exec hostname -I`) DO @SET IP=%%i
netsh interface portproxy add v4tov4 listenport=8000 connectaddress=%IP%
netsh.exe interface portproxy show v4tov4
pause

port-forward.wxs

<?xml version='1.0' encoding='utf-8'?>
<Wix xmlns='http://schemas.microsoft.com/wix/2006/wi'>

  <Product Name='WSLポートフォワード設定'
           Id='{D5FB36DD-CE53-4BD8-AD99-0071F603BFBC}'
           UpgradeCode='{874C9191-4725-45F5-9A9A-079C11932324}'
           Language='1041' Codepage='932'
           Version='1.0.0' Manufacturer='ledsun'>

    <Package Id='*' Keywords='WSLポートフォワード設定'
             Description="WSLのIPアドレスへのポートフォワード設定をON/OFFします"
             Manufacturer='ledsun' InstallerVersion='100'
             Languages='1041' Compressed='yes' SummaryCodepage='932' />

    <Media Id='1' Cabinet='Sample.cab' EmbedCab='yes' DiskPrompt='CD-ROM 1枚目' />
    <Property Id='DiskPrompt' Value="WSLポートフォワード設定 インストーラ [1]" />

    <Directory Id='TARGETDIR' Name='SourceDir'>
     <Directory Id='ProgramFilesFolder' Name='PFiles'>
        <Directory Id='ledsun' Name='ledsun'>
          <Directory Id='INSTALLDIR' Name='port-forward'>

            <Component Id='PortForwardOn'
                       Guid='{E2558918-C7AC-42AA-AA82-C318B53D1202}'>
              <File Id='ON'
                    Name='port-forward-on.bat' DiskId='1'
                    Source='port-forward-on.bat' >
                <Shortcut Id="startmenuon" Directory="DesktopFolder"
                          Name="WSLポートフォワード設定 ON" WorkingDirectory='INSTALLDIR' />
              </File>
              <RegistryValue Root='HKCU'
                              Key='Software\[Manufacturer]\[ProductName]\PortForwardOn'
                              Type='string' Value='' KeyPath='yes' />
            </Component>

            <Component Id='PortForwardOff'
                       Guid='{2A5AD250-7E0D-43D7-B587-884DCC8FE70F}'>
              <File Id='OFF'
                    Name='port-forward-off.bat' DiskId='1'
                    Source='port-forward-off.bat' >
                <Shortcut Id="startmenuoff" Directory="DesktopFolder"
                          Name="WSLポートフォワード設定 OFF" WorkingDirectory='INSTALLDIR' >
                </Shortcut>
              </File>
              <RegistryValue Root='HKCU'
                              Key='Software\[Manufacturer]\[ProductName]\PortForwardOff'
                              Type='string' Value='' KeyPath='yes' />
            </Component>

          </Directory>
        </Directory>
      </Directory>

      <Directory Id="DesktopFolder" Name="Desktop" />
    </Directory>

    <Feature Id='Complete' Level='1'>
      <ComponentRef Id='PortForwardOn' />
      <ComponentRef Id='PortForwardOff' />
    </Feature>

  </Product>
</Wix>