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This draft is a work item of the Better-Than-Nothing Security Working Group of the IETF.
Title : Problem and Applicability Statement for Better Than Nothing Security (BTNS)
Author(s) : J. Touch, et al.
Filename : draft-ietf-btns-prob-and-applic-04.txt
Pages : 26
Date : 2006-9-27
The Internet network security protocol suite, IPsec, consisting of
IKE, ESP, and AH, generally requires authentication via IKE of
network layer entities to bootstrap security. This authentication can
be based on mechanisms such as pre-shared symmetric keys,
certificates and associated asymmetric keys, or the use of Kerberos.
The need to deploy authentication information and its associated
identities to network layer entities can be a significant obstacle to
use of network security. This document explains the rationale for
extending the Internet network security suite to enable use of IPsec
security mechanisms without full IKE authentication. These extensions
are intended to protect communication in a "better than nothing"
(BTNS) fashion. The extensions may be used on their own (Stand Alone
BTNS, or SAB), or may be useful in providing network layer security
that can be authenticated by higher layers in the protocol stack,
called Channel Bound BTNS (CBB). This document also explains
situations in which use of SAB and CBB extensions are appropriate.
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