I have a main office with a network 192.168.40.0/24 and a subsidiary office that have a network with this address 192.168.1.0/24, i want to link this office :
Allow PC on the main office to access PC in the subsidiary and PC in subsidiary office to access PC on main office; in addition i want to allow some roadwarrior user to connect to main office Network with their notebook.
I want to use OpenVPN, and in subsidiary office i have a router with DD-WRT on board that theorically can connect to VPN Server on main office and distribute connection to each client.
What's the best way to implement a similar VPN?
Do i need to setup a routed or a bridged VPN ?
How to configure VPN serveR ?