Configure a L2TP/IPsec server behind a NAT-T device
Achived From Microsoft 09/22/2020 2 minutes to read ------Achived------- This article describes how to configure a L2TP/IPsec server behind a NAT-T device. Applies to: Windows 10 - all editions, Windows Server 2012 R2 Original KB number: 926179 Summary Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, see How to back up and restore the registry in Windows . By default, Windows Vista and Windows Server 2008 don't support Internet Protocol security (IPsec) network address translation (NAT) Traversal (NAT-T) security associations to servers that are located behind a NAT dev...