Owing to the fact that L2TP lacks both authentication and encryption, it is unlikely that you will ever set up L2TP as a standalone VPN protocol. A more likely scenario is that you set an L2TP/IPsec tunnel in which users can connect to the IPsec tunnel directly, or connect via L2TP, with IPsec traffic taking place within the L2TP tunnel. Fortunately, L2TP configuration is much easier than IPsec configuration, and implementing in should ensure that our VPN will be accessible to a greater number of users.
To begin L2TP configuration, navigate to VPN | L2TP. This should take you to the Configuration tab. The Enable checkbox, when checked, enables the L2TP server. In the Configuration section, the Interface drop-down allows you to select ...
