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Re: HP IPv6 RA Guard
From: Daniel Espejel <daniel.unam.ipv6 () gmail com>
Date: Tue, 06 Dec 2011 21:39:32 -0600

Well, as a stability feature may work if better understanding of the
internet protocols is given to all the network specialist (almost a
paradox, all those documents are free to be checked for all the people).

Of course, the problem with the rogue IPv6 packets and "malformed"
packets will exists as long as IPv6
is being deployed wide spread, and the proposed mechanisms on how to
deal with those problems is, as it seems, a passion for some guys, and a
job for other ones, but always thinking on the Internet growth is the
main focus of those whom participate actively to reach that objective.

For Rogue V6's maybe some ACLs could work, but increases complexity.
Maybe some mechanisms in the receiving nodes could work too, but
requires a lot of computer resources and in that situations the LoWPAN
will suffer its own success; so actually a solution should be adequate
to each situation.
BR

On 06/12/11 07:46, Ray Soucy wrote:
I think of RA Guard as a Layer-2 stability feature, rather than a
security feature.

You're correct that it is unable to deal with RA crafted in a
fragmented packet on the majority (if not all) of implementations.

The issue of rogue RA exists on every network, regardless of whether
or not the IT group has deployed IPv6 or is aware of the IPv6 traffic
on that network.

Windows ICS is the most common "accidental" cause of rogue RA on a LAN.

On Mon, Dec 5, 2011 at 10:35 PM, Daniel Espejel
<daniel.unam.ipv6 () gmail com> wrote:
So,still assuming the fact that attackers will use the same "traditional
ipv4" methods to alter the correct functioning over a network?...Well,
maybe. Toda's IPv6 expertise for some network andmins and security
experts is minimal. So most trainning and understanding before
implementing its a good idea.

For example, the RA-Guard method has a significant vulnerability: It's
not designed to identify a "complex" IPv6-many extension headers formed
packet (F. Gont - 6Networks). Some other security oriented mechanisms
may fail because of the low IPv6 compliance.

Regards.


--
Daniel Espejel Pérez
Técnico Académico
D.G.T.I.C. - U.N.A.M.
GT-IPv6 CLARA / GT-IPv6 U.N.A.M.





-- 
Daniel Espejel Pérez
Técnico Académico
D.G.T.I.C. - U.N.A.M.
GT-IPv6 CLARA / GT-IPv6 U.N.A.M.



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