A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : Detection of IPv6 Neighbor Discovery and Host Redirection Spoofing
Author(s) : R. Pashby
Filename : draft-pashby-ipv6-detecting-spoofing-00.txt
Pages :
Date : 2005-7-14
The purpose of this draft is to provide a method to detect
exploitation of inherent vulnerabilities in the Neighbor Discovery
processes.
There are two well documented vulnerabilities in the basic IPv6
architecture: Neighbor Discover spoofing and Host Redirection.
There already exists the SeND RFC [send] that addresses
authenticating these interactions. Certain networks may choose not
to uses (or cannot use) SeND, for instance, networks that use DHCP
or statically assigned addresses.
There is an underlying security principle that says, ^If you can
block a attack do it. If you cannot block it, detect it. Even if
you can block it, detect it.^ This proposal outlines simple
modifications to the basic protocols to allow for easily detecting
these attacks. Through proactive systems, once an attack is
detected it could easily provide blocking by isolating the
attacking host via Access Control Lists (ACLs) or disabling ports.
The basic method proposed is to force packets used in these attacks
to be multicast to the attacked nodes Solicited Node Multicast
group, thus allowing a security device to detect when it is
occurring.
A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-pashby-ipv6-detecting-spoofing-00.txt
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