Ref: 
- [https://learn.microsoft.com/en-us/windows/wsl/networking](https://learn.microsoft.com/en-us/windows/wsl/networking)
- [https://superuser.com/questions/1679757/how-to-access-windows-localhost-from-wsl2](https://superuser.com/questions/1679757/how-to-access-windows-localhost-from-wsl2)

### WSL2 to Windows

1. Obtain the IP address of your host machine (Windows) by running this command from your Linux distribution: 
```bash
cat /etc/resolv.conf
```
2. Copy the IP address following the term: nameserver.
3. Add rule to Firewall so that incoming connections to the target Windows port is allowed.
```powershell
New-NetFirewallRule -DisplayName "<Alias>" -InterfaceAlias "vEthernet (WSL)" -Direction Inbound -Protocol TCP -LocalPort <Win_port> -Action Allow
```
5. Connect to any Windows server using the copied IP address

Alternatively Windows server can be accessed with the host/domain: `"$(hostname).local"`

Alternatively IP of the Windows server may be accessed from
```bash
ip route show | grep -i default | awk '{ print $3}'
```

### Port forward from Windows to WSL2

Powershell command:
```Powershell
netsh interface portproxy add v4tov4 listenport=<Win_port> listenaddress=0.0.0.0 connectport=<WSL2_port> connectaddress=<WSL2_IP>
```
Obtain <WSL2_IP> from

```powershell
wsl hostname -I
```
To see existing port-forwardings:
```Powershell
netsh interface portproxy show all
```

To delete a particular port-forwarding:
```Powershell
netsh interface portproxy delete v4tov4 listenport=<port> listenaddress=<IP>
```