VirtualBox - How to connect LAN computers to Windows XP Guest

I've tried setting up a bridged connection, and so far, it has an internet connection using br0, but the local computers on the LAN cannot access it.

br0?!...It seems to me as though you have created a bridged connection in the host OS (Ubuntu), which is not the correct way.

Instead, go to VirtualBox, Select your Guest machine:

1. Settings → Network

2. Check Enable Network Adapter, Set attached to Bridged Adapter, Select the Name of your network interface which is connected to the same network of other clients (LAN machines).

   

3. Don't forget to configure (or just disable) Windows Firewall on the guest. If you don't do this, it won't respond to pings, for example.

4. Also, might need to hit 'Repair' on network connection on the VM (as I had to after following the above).

you can do it by File -> Preference -> network -> add host only network

and add 2nd adapter on virtual device settings -> network -> adapter2 click checkbox and select host only adapter