nanog mailing list archives

Re: NDP DoS attack (was Re: Anybody can participate in the IETF (Was: Why is IPv6 broken?))


From: Jared Mauch <jared () puck nether net>
Date: Thu, 14 Jul 2011 22:35:40 -0400



On Jul 14, 2011, at 10:06 PM, Fernando Gont <fernando () gont com ar> wrote:

It should be possible to mitigate this, so long as the attack does not actually
originate from a neighbor on the same subnet as a router  IP interface on
an IPv6 subnet with sufficient number of IPs.

Well, unless there's some layer-2 anti-spoofing mitigation in place,
with /64 subnets the "local attacker" typically *will* have enough
addresses.

Solving a local attack is something I consider different in scope than the current draft being discussed in 6man, 
v6ops, ipv6@ etc...

Anyone on a layer-2 network can do something interesting like flood all f's and kill the lan. Trying to keep the 
majority of thoughts here for layer-3 originated attacks, even if the target is a layer2 item.

- Jared 

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