Tracking stealth portscan/pepsi attacks

On Thu, 2 Sep 1999, Berislav Todorovic wrote:

> RFC 2267 describes most of the measures that should be taken at the router
> level. I'm not sure how many ISPs implemented everything recommended in
> that document.

This document doesn't mention the very important statement
"no ip directed-broadcast" for dealing with smurf attacks. Please
use this command on each interface whenever possible. Check your
network at http://www.powertech.no/smurf/.

Kind Regards,

Patrick Schreurs.

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