Debian/Ubuntu Tips and Tricks

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Debian/Ubuntu Tips and Tricks

How-To: Set up a L2TP over IPSec VPN using a Radius backend

Posted by chantra on 18th June 2010

This entry is part 1 of 3 in the series How-To: Set up a L2TP over IPSec VPN using a Radius backend

Even though I pretty like OpenVPN, there is still some devices that might not support the TUN/TAP driver needed by OpenVPN.

Take IPhones, Android phones for instance, you need to root them in order to get that feature, assuming somebody has already cooked a ROM for your device.

L2TP is quite and old standard that allow setting up VPNs.

On the other end, it does not provide any kind of encryption mechanism, and as such, it is pretty common to get L2TP running over an IPSec link.

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How-To: Set up a L2TP over IPSec VPN using a Radius backend — page 2

Posted by chantra on 18th June 2010

This entry is part 1 of 3 in the series How-To: Set up a L2TP over IPSec VPN using a Radius backend

XL2TP

Now, let's get on the next phase: XL2TP.

Packages Requirements

You can install xl2tp with the following command:

# apt-get install xl2tp

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How-To: Set up a L2TP over IPSec VPN using a Radius backend — page 3

Posted by chantra on 18th June 2010

This entry is part 3 of 3 in the series How-To: Set up a L2TP over IPSec VPN using a Radius backend

Using freeradius for authentication

Here I am going to consider that the freeradius server is set up correctly, meaning that you can already authenticate your users with freeradius using radtest utility.

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