Another option is to embed the VPN in the router. Some routers have VPN built in, but to get high speed transfers need a powerful fast CPU in them. ASUS routers with the MERLIN flash are very good, among others and DD-WRT supports many routers. Another option is to use a desktop computer to act as a VPN computer for your BUZZ box.
With an Asus router, there is a VPN tab in the setup menus. (client and server, you want client) Enter your VPN setup information, click on connect and then everything going through the router will go through the VPN. A google search will bring up many tutorials on the VPN function of these routers. Firmware builds of DD-WRT and MERLIN will have VPN functions as well. Start by seeing if your router supports DD-WRT VPN or MERLIN.