Simple L2TP/IPsec server not working (openswan, xl2tpd, Ubuntu, Windows)

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http://serverfault.com – I configured openswan and xl2tpd on an Ubuntu 12.04 server (on EC2) by following various tutorials/documentation which seem to largely say the same things, but most recently this one. However, my attempts to connect from Windows (which I configured with the shared secret) fail. I see the initial packets coming in: $ sudo tshark -n -i eth0 port 4500 or port 500 or port 1701 tshark: Lua: Error during loading: [string "/usr/share/wireshark/init.lua"]:45: dofile has been disabled Running as user "root" and group "root". This could be dangerous. Capturing on eth0 1135.926321 -&gt (HowTos)