The Internet Security Association and Key Management Protocol, also called IKE, is the negotiation protocol that lets the IPsec client on the remote PC and the ASA agree on how to build an IPsec Security Association. Remote access VPNs allow users to connect to a central site through a secure connection over a TCP/IP network such as the Internet. Information About Remote Access IPsec VPNs Configuration Examples for Remote Access IPsec VPNs.Licensing Requirements for Remote Access IPsec VPNs.Information About Remote Access IPsec VPNs.This chapter describes how to configure Remote Access IPsec VPNs and includes the following sections: