A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Point-to-Point Protocol Extensions Working Group of the IETF.
Title : EAP Tunneled TLS Authentication Protocol (EAP-TTLS)
Author(s) : P. Funk, S. Blake-Wilson
Filename : draft-ietf-pppext-eap-ttls-03.txt
Pages : 41
Date : 2003-8-29
EAP-TTLS is an EAP protocol that extends EAP-TLS. In EAP-TLS, a TLS
handshake is used to mutually authenticate a client and server. EAP-
TTLS extends this authentication negotiation by using the secure
connection established by the TLS handshake to exchange additional
information between client and server. In EAP-TTLS, the TLS
handshake may be mutual; or it may be one-way, in which only the
server is authenticated to the client. The secure connection
established by the handshake may then be used to allow the server to
authenticate the client using existing, widely-deployed
authentication infrastructures such as RADIUS. The authentication of
the client may itself be EAP, or it may be another authentication
protocol such as PAP, CHAP, MS-CHAP or MS-CHAP-V2.
Thus, EAP-TTLS allows legacy password-based authentication protocols
to be used against existing authentication databases, while
protecting the security of these legacy protocols against
eavesdropping, man-in-the-middle and other cryptographic attacks.
EAP-TTLS also allows client and server to establish keying material
for use in the data connection between the client and access point.
The keying material is established implicitly between client and
server based on the TLS handshake.
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