Re: IPv6 filtering

[Franck Martin <franck () genius com>]

Well we filter icmp due to exploits, if no exploits, then we can let the whole of icmpv6 through. Or is there something 
terribly dangerous in icmpv6 already?

----- Original Message -----
From: "Roland Dobbins" <rdobbins () arbor net>
To: "nanog group" <nanog () nanog org>
Sent: Wednesday, 26 January, 2011 6:13:26 PM
Subject: Re: IPv6 filtering


On Jan 26, 2011, at 12:03 PM, Franck Martin wrote:

> Ok filtering ipv6 and ipv6-icmp is understood, it is like ipv4. 

Be advised, ICMPv6 is *not* like ICMP in IPv4, and knowing what can be filtered, what to filter, and where to filter it 
is considerably more complex than in IPv4 - which, given the prevalence of broken PMTU-D alone, is apparently not 
well-understood in many quarters, heh.

------------------------------------------------------------------------
Roland Dobbins <rdobbins () arbor net> // <http://www.arbornetworks.com>

Most software today is very much like an Egyptian pyramid, with millions
of bricks piled on top of each other, with no structural integrity, but
just done by brute force and thousands of slaves.

                          -- Alan Kay