netdev - Re: [PATCH net] ip: make IP identifiers less predictable

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]

Message-ID: <CA+55aFwZrF88Fj7arP2P3rRshBTaxbjyJkKuOAu2Y4tVQ3kWWA@mail.gmail.com>
Date:	Fri, 25 Jul 2014 11:35:39 -0700
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	Jeffrey Knockel <jeffk@...unm.edu>,
	David Miller <davem@...emloft.net>,
	netdev <netdev@...r.kernel.org>,
	"Jedidiah R. Crandall" <crandall@...unm.edu>,
	Willy Tarreau <w@....eu>,
	"security@...nel.org" <security@...nel.org>
Subject: Re: [PATCH net] ip: make IP identifiers less predictable

On Fri, Jul 25, 2014 at 11:09 AM, Eric Dumazet <eric.dumazet@...il.com> wrote:
>
> We might change the hash to use both daddr & saddr to increase
> protection.

.. and maybe protocol too, so that you can't easily use icmp echo
packets to do it for udp packets etc. The underlying jhash is
jhash_3words(), so that would actually be fairly natural for at least
ipv4 (the ipv6 case I didn't look at).

               Linus
--
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