Re: Compromised hosts lists

[James Lay <jlay () slave-tothe-box net>]

On Mon, 20 Feb 2006 22:40:00 -0500
Valdis.Kletnieks () vt edu wrote:

> On Mon, 20 Feb 2006 16:55:06 MST, James Lay said:
> > I had heard tale of a site that had a semi-updated list of
> > compromised hosts.  I was hoping that someone knows that
> > link...would LOVE to be able to get my firewall to get this list
> > and auto-create an iptables rule.  Thanks all!
>
> That's ass backwards.
>
> The secure way to do this is to first deny *all* traffic, and then add
> specific rules for machines that you *do* want to talk to.
>
> Think for a bit - if some random cablemodem in another timezone is on
> the list, why should you stop packets from it?  Why would you want to
> accept packets *before* it showed up on the list?  Why do you still
> want to accept packets from *other* boxes in the same /24 or /16?

I completely agree for ports that I would have closed, but obviously I
could not simply deny *all* traffic for port 25 and 80 let's say, as I
want them open to the public.

James
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