RFC 4739 on Multiple Authentication Exchanges in the Internet Key Exchange (IKEv2) Protocol

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        RFC 4739

        Title:      Multiple Authentication Exchanges in the 
                    Internet Key Exchange (IKEv2) Protocol 
        Author:     P. Eronen, J. Korhonen
        Status:     Experimental
        Date:       November 2006
        Mailbox:    pasi.eronen at nokia.com, 
                    jouni.korhonen at teliasonera.com
        Pages:      11
        Characters: 22704
        Updates/Obsoletes/SeeAlso:   None

        I-D Tag:    draft-eronen-ipsec-ikev2-multiple-auth-02.txt

        URL:        http://www.rfc-editor.org/rfc/rfc4739.txt

The Internet Key Exchange (IKEv2) protocol supports several
mechanisms for authenticating the parties, including signatures with
public-key certificates, shared secrets, and Extensible
Authentication Protocol (EAP) methods.  Currently, each endpoint uses
only one of these mechanisms to authenticate itself.  This document
specifies an extension to IKEv2 that allows the use of multiple
authentication exchanges, using either different mechanisms or the
same mechanism.  This extension allows, for instance, performing
certificate-based authentication of the client host followed by an
EAP authentication of the user.  When backend authentication servers
are used, they can belong to different administrative domains, such
as the network access provider and the service provider.  This memo 
defines an Experimental Protocol for the Internet community.


EXPERIMENTAL: This memo defines an Experimental Protocol for the Internet 
community. It does not specify an Internet standard of any kind. 
Discussion and suggestions for improvement are requested.  Distribution 
of this memo is unlimited.

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