A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : Effects of ICMPv6 on IKE
Author(s) : J. Arkko
Filename : draft-arkko-icmpv6-ike-effects-02.txt
Pages : 21
Date : 2003-3-7
The ICMPv6 protocol provides many functions which in IPv4 were either
non-existent or provided by lower layers. IPv6 architecture also
makes it possible to secure all IP packets using IPsec, even ICMPv6
messages. IPsec architecture has a Security Policy Database that
specifies which traffic is protected, and how. It turns out that the
specification of policies in the presence of ICMPv6 traffic is hard,
particularly with ICMPv6 packets related to Neighbor Discovery.
Sound looking policies may easily lead to loops: The establishment of
security requires Neighbor Discovery messages which can not be sent
since security has not been established yet. The purpose of this
draft is to inform system administrators and IPsec implementors in
which manner they can handle the ICMPv6 messages. Common
understanding of the way that these messages are handled is also
necessary for interoperability, in case vendors hardcode such rules
in to products.
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