Can someone please explain how the patent covers non-obvious work? This reads to me like tunneling with VPN's, and after we have so many on our hands, that one

Can someone please explain how the patent covers non-obvious work? This reads to me like tunneling with VPN's, and after we have so many on our hands, that one naturally reaches for sprinkling some conventions and automation on top. We were doing this in the late 90's by hand, and the connections were so expensive we didn't run up enough instances to warrant establishing conventions and writing the code to automate them, but it was obvious that was the direction once bandwidth prices got less insane. Just curious what I'm missing (as they wouldn't have put this suit forward if they didn't feel they had a very good shot at collecting, right?).