''This Provides an overview of IPsec in general. For information on the vtluug IPsec tunnel, see [[Infrastructure:IPsec]]'' '''IPsec''' is a method of running an encrypted overlay network, so as to protect traffic originatingfrom an unencrypted and/or untrusted network, such as a coffee shop's open WAP. It is among a number ofother protocols which can be used. L2TP/IPsec is one of the most common methods, although OpenVPN and IKEv2also are viable, faster, and arguably more secure methods. The latter is supported in openiked developed bythe [[OpenBSD]] project. Most of this article assumes the use of IPsec/IKEv1