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Because of the lack of confidentiality inherent in the '''Layer 2 Networking Protocol''' ('''L2TP''') protocol, '''Internet Protocol Security''' ('''IPsec''') is often used to secure L2TP packets by providing confidentiality, authentication and integrity. The combination of these two protocols is generally known as '''L2TP over IPsec''' (or simply '''L2TP/IPsec''').  

Because of the lack of confidentiality inherent in the '''Layer 2 Networking Protocol''' ('''L2TP''') protocol, '''Internet Protocol Security''' ('''IPsec''') is often used to secure L2TP packets by providing confidentiality, authentication and integrity. The combination of these two protocols is generally known as '''L2TP over IPsec''' (or simply '''L2TP/IPsec''').  

This article provides a guide on how to configure L2TP/IPsec on RUTxxx routers. It should also be noted that this guide

This article provides a guide on how to configure L2TP/IPsec on RUTxxx routers. It should also be noted that this guide is aimed at more advanced users and, therefore, skips some of the more self-explanatory steps in order to preserve the overall coherence of the article. For example, instead of showing how to add new instances step by step, it is only mentioned in a short sentence. If you feel this lack of information impedes your ability to configure the setup, we suggest you check out our separate configuration guides on '''[[IPsec configuration examples|IPsec]]''' and '''[[L2TP configuration examples|L2TP]]'''.

==Configuration overview and prerequisites==

==Configuration overview and prerequisites==