search for: 3x1gb

I'm looking for some kind of appliance like box, maybe something like this:http://www.soekris.com/net5501.htm on which I could deploy iptables based firewall/openvpn/DNS and other local network services in a wide area network. I would probably install on a flash device. I would prefer something that was relatively easy to install on, or at least has been used with CentOS before, where