identify hostname

Jonathan Mischo supertaz at
Thu Dec 3 23:29:41 UTC 1998

this makes sense...until someone gets lazy, and takes a week to filter,
and the smurf brats catch on, and start querying DNS to find amplifiers.


Jonathan "Taz" Mischo -- Network Slave -- supertaz at
Mindspring Enterprises, Inc.  1430 W. Peachtree St. Suite 400
Atlanta, GA  30309   1.800.719.4664 x2705  404.287.0770 x2705
fax: 404.287.0885 pager: pagetaz at M-F2-10pET

On Thu, 3 Dec 1998, Roeland M.J. Meyer wrote:

> At 11:32 AM 12/2/98 -0700, Pete Kruckenberg wrote:
> >> I do have an access list deny for incoming destinations to *.*.*.255
> >> since I do know that the only customer we have with larger than a /24
> >> from us (via also happens to have nothing larger than /26 in
> >> their network.  AFAIK, today, smurfers are only using *.*.*.255.  They
> >> would have to track a lot more information to use others, so for now I
> >> can generally expect that deny to prevent us from being an amplifier. 
> >
> >It's not difficult to find subnet broadcast addresses, since few routers
> >(if they even support it) are configured to filter ICMP replies. If there
> >isn't already software out there, it will take all of a few hours to add
> >broadcast-finding code to the smurfing software in existence.
> Guys,
> Why not make your down-stream fill out a *complete* IN-ADDR.ARPA file which
> lists their sub-net bcast and base addresses? That way yo could use the DNS
> system itself to find those addresses.
> ___________________________________________________ 
> Roeland M.J. Meyer, ISOC (InterNIC RM993) 
> e-mail: <mailto:rmeyer at>rmeyer at
> Internet phone:
> Personal web pages: staff<>
> Company web-site: <>
> ___________________________________________________ 
> Who is John Galt?
> "Atlas Shrugged" - Ayn Rand

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