nanog mailing list archives

Re: More smurf fun


From: Jeffrey Haas <elezar () pfrc org>
Date: Mon, 9 Mar 1998 14:58:30 -0500 (EST)

Dave Rand was known to have said:
Here's the latest group of smurf-able networks.
[...]
Some of the phone calls were interesting.  Many of the NOC staff did not
know what a smurf attack was (so I explained it to them).  Many did not want
to set no ip directed-broadcast because they didn't know what it would do.
[...]
148.59.0.0

A quick note:

If you find yourself having problems from this netblock, please contact
either jmh () msen com (me) or noc () msen com.

We currently cannot disable directed broadcast due to a NASTY bug
in the packet forwarding code of the Proteon routers we use on our
backbone.  We are working with Proteon to solve this issue.

(I'm also trying to figure out if the issue is worth posting to Bugtraq.)

In the meanwhile, we have implemented blackhole routing for the subnets
that seemed to be at issue.

Dave Rand

-- 
 Jeffrey Haas   "He that breaks a thing to find out what it is has
elezar () pfrc org  left the paths of wisdom." (Or works for Fermilab...)


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