The FW is tomato-WRT54GSUSB-1.28.7633.3-Toastman-VLAN-IPT-ND-VPNNOCAT.bin This is OpenVPN client embedded. I want to use it to connect to my friend's OpenVPN server to play PC games, such as warcraft which needs same network. So after my router connected to his router, the situation will be: 1. My computer will be assigned an IP address by OpenVPN server, in a same network. We can play the game directly. 2. My router will be assigned an IP address by OpenVPN server. My router act as a gateway, my computer will be assigned an IP address by my router, not his OpenVPN server. So we can't play the games directly. Because I haven't bought router, so I couldn't do this test. Anyone knows? Thanks! By the way, I have two FW files: tomato-WRT54GSUSB-1.28.7633.3-Toastman-VLAN-IPT-ND-VPNNOCAT.bin size: 4.313KB tomato-WRT54GSUSB-1.28.7633.3-Toastman-VLAN-IPT-ND-VPN.bin size: 4.513KB I think VPNNOCAT should have more functions than VPN. But why the size is smaller?