Multi-LAN & OpenVPN - Routing?

[ElResidente]

Hi guys

I'm trying to setup up 2 different physical LANs which one of them should connect directly to the internet - while the second LAN should be forced through the VPN tunnel.

The 2 LANs are working and the OpenVPN-Client connection is up. But I dont know, how to configure the Routing on the different interfaces.

Some new inputs would be great.

Thanks a lot for your ideas.