Full Disclosure: Re: Compromised hosts lists

[Valdis.Kletnieks () vt edu]

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?

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