Reporting Little Blue Men

Dave Van Allen dave at
Thu Jan 22 03:36:26 UTC 1998

That would make you one of the (few) Good Guys!

Dave Van Allen

-----Original Message-----
From: Eric Wieling [mailto:eric at]
Sent: Wednesday, January 21, 1998 4:34 PM
To: nanog at
Subject: Re: Reporting Little Blue Men

On Tue, Jan 20, 1998 at 07:50:16PM -0500, Dave Van Allen wrote:
> Start by making sure your RAS users and direct customers (your
> edge) can only output packets that contain their valid source address.
> If everyone did this, all of the world's problems would go away; Ozone
> depletion, world hunger, that silly rain forest thing, Smurfs and DoS
> and maybe even Microsoft! :-)

We prevent ANY packets to or from our network with a broadcast
address.  We don't filter on a per-machine basis for address
spoofing, but ALL packets leaving our network must have a valid
address on our network.  Basically, one user on our network can spoof
another user on our network, but no users can spoof addresses that
are not on our network.

Eric Wieling (eric at, Chesapeake Communications Corporation
Sales: sales at 504-585-1850, Support: support at

We have changed our name!  Corporate Communications Technology is now
known as Chesapeake Communications Corporation.

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