I need to setup a tunnel between two points with no encryption. I know this is generally done using L2TP but what would be the recommended daemon to use. I know of rp-l2tp which I have used in the past successfully but was wondering if there was anything else which may be considered a better choice?
My tool of choice for VPN tunnels on Linux has been OpenVPN, as of late.
I don't know if you want only layer 3 functionality or if you'd like layer 2 (forwarding broadcasts, etc) functionality as well. OpenVPN will do both under Linux (with the "tun" and "tap" drivers, respectively) and can be configured for no authentication or encryption (though I'd recommend at using authentication even if you're not going to use encryption). The "cipher none" command can be substituted into most tutorial and "recipe" OpenVPN configurations to get you no encryption on the tunnel.