Deep packet inspection (DPI) hardware can identify an astonishing array of protocols passing across the Internet—up to and including protocols that are rare even to us in the Orbiting HQ (Gadu-Gadu? Manolito? Feidian?).
"A very complex technology to make network management simple." That's what the developers of the eBox platform promise small and medium sized organizations, and it's certainly an attractive idea.
There are a lot of bogus VPN (virtual private network) products sold for big bucks that are not real VPNs at all, but SSL portals. OpenVPN is a genuine secure VPN that supports both site-to-site tunnels, to create a nice secure WAN on the cheap, and remote individual clients.
Faced with a growing array of network security threats, small businesses are stuck: all-in-one proprietary solutions are too expensive and open source alternatives are too complicated and/or require multiple servers.