QC Ubiquiti EdgeMAX - Port Forwarding L2TP to Internal Server (NAT Traversal)

Published: 20 February 2017
on channel: Ben Pin
5,512
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This video focuses on establishing a Layer 2 Tunneling Protocol (L2TP) connecting through a NAT device to an internal server. L2TP relies on encryption via IPsec, and the ESP protocol cannot normally be translated. The solution to our problem is to use NAT-Traversal, which encapsulates the ESP protocol into UDP (port 4500). In this video I show you how to port forward (or use destination NAT) the correct UDP ports to the internal L2TP server. In this case the server is running Windows Server 2016 with the Routing and Remote Access (RRAS) role.

Link to EdgeMAX configuration files:
https://1drv.ms/f/s!AsuDsQ7TSDqNhnsDS...

Sources used:
https://supportforums.cisco.com/docum...
https://en.wikipedia.org/wiki/Layer_2...
https://vkelk.wordpress.com/2012/10/2...
http://www.personalvpn.org/blank-1
http://www.thomasmaurer.ch/2016/10/ho...


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