[90771] in North American Network Operators' Group
Re: Interesting new spam technique - getting a lot more popular.
daemon@ATHENA.MIT.EDU (Christopher L. Morrow)
Wed Jun 14 00:23:44 2006
Date: Wed, 14 Jun 2006 04:23:15 +0000 (GMT)
From: "Christopher L. Morrow" <christopher.morrow@verizonbusiness.com>
In-reply-to: <bb0e440a0606132116u36c442a4n4ec2656969d0383e@mail.gmail.com>
To: Suresh Ramasubramanian <ops.lists@gmail.com>
Cc: NANOG <nanog@merit.edu>
Errors-To: owner-nanog@merit.edu
On Wed, 14 Jun 2006, Suresh Ramasubramanian wrote:
> That was not my advice btw - just forwarding on what I saw.
>
oh,. apologies, i did cut the message down quite a bit :( I understood you
were quoting from the spamdiaries website, I apologize to the other
listeners (readers?) if it confused the issue.
> What you say does seem like a "must do" all right - but putting ARP
> filters in is actually a reasonable idea.
>
Atleast it'd trim down the 'problem' to the single customer subnet, I
assume that dedicated hosting folks don't just drop machines behind a
switch on one big flat subnet? That's probably a naive assumption though
:( Perhaps this is clue #12 that that is a 'less than good' option? :)
> On 6/14/06, Christopher L. Morrow
> <christopher.morrow@verizonbusiness.com> wrote:
> >
> > On Wed, 14 Jun 2006, Suresh Ramasubramanian wrote:
> > >
> > > http://thespamdiaries.blogspot.com/2006/02/new-host-cloaking-technique-used-by.html
> > >
> > > * Monitor your local network for interfaces transmitting ARP
> > > responses they shouldn't be.
> >
> > how about just mac security on switch ports? limit the number of mac's at
> > each port to 1 or some number 'valid' ?
> >
>
>
> --
> Suresh Ramasubramanian (ops.lists@gmail.com)
>
