I recently succeeded in installing OpenVPN on Tomato on a WRT54GL. It is configured as a TAP. I get IP address by DHCP, same range as other hosts. I can connect, my traffic is directed over the connection, and I can see all hosts (router, the tomato vpn/access point, network printer and terminals). Except, the main reason for the VPN: seeing the video feeds on a security device has not been succesful. I can neither ping the device, see its web interface (port 80), or its video interface (ports 53700+). All clients on the LAN can do those things without problem. As a TAP should be equivalent to plugging a cable into a LAN switch, why does it not work? What kind of troubleshooting can I do?