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North American Network Operators Group

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Re: ICMP Attacks???????

  • From: Network Admin Account
  • Date: Fri Aug 15 13:22:06 1997

Does anyone have any ideas from where its coming from????  We have had no
luck with this at all????

On Fri, 15 Aug 1997, Alex Rubenstein wrote:

> 
> Yes. It was interesting. My understanding is that what I am about to tell
> you is old news, but here:
> 
> Attacker sends a packet with a source address of the victim, with a dest
> address to the broadcast of a (pick any) network. Every machine on the
> network will then respond with a ICMP reply to the 'source' (the victim).
> 
> My understanding is that a 28.8 users could easily fill a T1 (or more)
> with this method. We have no proof, but someone did this to us from what
> appears to be a ISDN account from PSI, and filled 6 - 7 mb/s of our
> Ethernet genuity connection in doing so. It was *not* cool.
> 
> 
> On Fri, 15 Aug 1997, Network Admin Account wrote:
> 
> > 
> > Has anyone been resently attacked by massive flood pings??????  We are
> > trying to locate any other ISP's or anyone else having the same problem. 
> > 
> > 
> 





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