Bridging between network interfaces in linux

Assume I have a linux computer, running an OpenVPN Access Server with the following interfaces:

wwan0 - Inteet access, IP 212.179.50.50

tun0 - OpenVPN interface, IP 172.225.25.1 (the SERVER's VPN IP)

eth0 - Etheet interface, connected to a switch and gets IP 10.0.0.10 (Switch's IP is 10.0.0.1)

What I am trying to do:

1. Allowing clients to connect to the OpenVPN server using the server's public inteet IP (done that).
2. Allowing those clients who connect to the OpenVPN server, to PING the switch (10.0.0.1), and any other device connected to that switch.

What is the easy way of doing this (using ifconfig/iptables/etc).

Thanks!

Recent Questions...