I am not sure this is the right place for this question but here goes.

We want to connect users using an L2TP VPN connection to a users at the other end of a SonicWall site-to-site VPN.

Currently we have a SonicWall firewall/router contraption in the home-office that is connected to a far-office over a VPN. Communications with machines in the home-office and far-office is fine. We also have an L2TP server running on the SonicWall that outside users can connect to. This gives them access to machines in the home-office. Communication between outside users and the home-office is fine. However outside users connected to the home-office via the L2TP server can't communicate with machines in the far-office.

Will there need to be network bridging or routing needed? Or will this simply be a firewall setting to get this working?

Thanks for any help or clues you provide! Rob