North American Network Operators Group
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Re: smurf's attack...

  • From: Dave Bergum
  • Date: Fri Sep 05 17:51:36 1997 
>>>>> On Fri, 5 Sep 1997 16:11:48 -0400, "Jay R. Ashworth" <[email protected]> said:

  Jay> On Fri, Sep 05, 1997 at 12:55:00PM -0800, Randy Bush wrote:
  >> > access-list XXX deny ip any 0.0.0.255 255.255.255.0
  >> 
  >> You must be kidding.  Why not
  >> 
  >> access-list XXX deny ip any 0.0.0.42 255.255.255.0

  Jay> In your usual, inimitable, "everyone ought to understand my comment"
  Jay> style, Randy.

  Jay> Because ".255" is very often (I'm tempted to say "almost always" a
  Jay> broadcast address, and ".42" never is.  (I haven't run the numbers, but
  Jay> I'm fairly certain that .42 is not the broadcast address of any size
  Jay> network.)

But 42 is the ultimate answer to life, the Universe and Everything!