To enable L2TP on the UTM, click on theswitch.
L2TP, the Layer 2 Tunnelling Protocol, is described in RFC 2661. The following configuration options are available:
The zone to which the L2TP connections are directed. Only the activated zones can be chosen from the drop-down menu.
- L2TP IP pool start address, L2TP IP pool end address
The IP range from which L2TP users will receive an IP address when connecting to the UTM.
- Enable debug
Tick this checkbox to let L2TP produce more verbose logs.
On the website https://help.endian.com/hc/en-us/sections/204101928, there are several tutorials available, that help in the set up of the UTM as IPsec server and smartphones as clients:
Setup of a VPN with IPsec and an L2TP tunnel
Connecting to an Endian UTM via L2TP (IPsec) using Android
Connecting to an Endian UTM via L2TP (IPsec) using iOS
Connecting to an Endian UTM via L2TP (IPsec) using Windows 7