Offering support for both IPv4 and IPv6, IPSec is deployed when it comes to the implementation of a VPN. The terms "IPSec VPN" or "VPN over IPSec" refer to the process of creating connections via IPSec protocol. It is a common method for creating a virtual, encrypted link over the unsecured Internet.

Mar 11, 2019 L2TP VPN - Windows 10 configuration – Untangle Support This article describes how to deploy L2TP over IPSec VPN connections on Windows 10. NOTE - This article was written using Windows 10 OS Build 14393.351. To check your build number type winver in the Windows "Ask me anything" box. Mismatched versions may lead to mismatched settings. Click the Start button in the bottom-left corner of the screen. How to setup L2TP IPsec VPN server on Windows Server 2008

Set up an L2TP/IPSec VPN on Windows Server 2019

L2TP — VyOS 1.3.x (equuleus) documentation

Cisco ASA Series CLI Configuration Guide, 9.0

Troubleshooting a MikroTik VPN configuration can be frustrating if you do not know where to look. This article is specifically about troubleshooting L2TP over IPSec Remote Access VPNs on RouterOS. Below are RouterOS configuration areas that relate to L2TP over IPSec. Here are the steps to verify and troubleshoot Remote VPN connections to a MikroTik … Read More L2TP VPN on Windows 10 - Microsoft Community