netdev - Re: ICMP rate limiting in IPv4 but not in IPv6

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 13 Sep 2013 18:44:05 +0200
From:	Hannes Frederic Sowa <hannes@...essinduktion.org>
To:	Andy Johnson <johnsonzjo@...il.com>
Cc:	netdev@...r.kernel.org
Subject: Re: ICMP rate limiting in IPv4 but not in IPv6

On Fri, Sep 13, 2013 at 06:57:56PM +0300, Andy Johnson wrote:
> Hello,
> After probing into the RFC of ICMPv6, I am even more confused.
> 
> RFC 4443 says:
> 
> 2.4.  Message Processing Rules
> ...
> 
> (f) Finally, in order to limit the bandwidth and forwarding costs
>        incurred by originating ICMPv6 error messages, an IPv6 node MUST
>        limit the rate of ICMPv6 error messages it originates.
> ...
> The rate-limiting parameters SHOULD be configurable.
> ...
> 
> Any ideas?

Well, nobody has implemented it because nobody missed the feature yet. I
don't believe there is another reason for that. If you come up with a
patch, I am sure it can go upstream.

Do you want to try to come up with a patch? We need to be a bit
careful regarding neighbor discovery but otherwise this should be
relativ straightforward. In the meantime you could also implement such
ratelimiting with netfilter.

Greetings,

  Hannes

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html