Layer 2 Tunnelling Protocol is a layer 7 networking protocol which provides an unsecure layer 2 tunnel. It runs on top of UDP, and is commonly used to carry PPP sessions. Security is usually provided with the addition of IPsec.

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L2TP client for Ubuntu

It's easy enough to get a pptp client going on a Ubuntu 9.04 (Jaunty) desktop: sudo apt-get install network-manager-pptp However, I can't seem to find documentation find a corresponding L2TP ...
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Error connecting to Sonicwall L2TP VPN from iPad/iPhone

A client has a Sonicwall Pro 2040 running SonicOS 3.0, and they'd like to be able to use the L2TP VPN client from their iPads to connect to internal services (Citrix, etc). I've enabled the L2TP VPN ...
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Using Ubuntu Karmic as an L2TP Client for VPN

I'm trying to connect to a VPN service over L2TP using Karmic as a client and it's not working. The only details I have are the remote IP address, username & password, and a shared secret string; ...