Actions to quiet the Smurf amplifiers?

Thu Oct 22 00:30:21 UTC 1998

Check the whitepaper at:

	http://www.cisco.com/public/cons/isp/documents/IOSEssentialsPDF.zip

It's got some reverse-path and ingress/egress filtering write-ups.

Barry

> -----Original Message-----
> From: owner-nanog at merit.edu [mailto:owner-nanog at merit.edu]On Behalf Of
> Hui-Hui Hu
> Sent: Thursday, October 22, 1998 2:34 AM
> To: Phil Howard
> Cc: nanog at merit.edu
> Subject: Re: Actions to quiet the Smurf amplifiers?
>
>
>
>  it's a CC feature in the 11.1 train, it's been mentioned before,
>  and should be applied per-interface.
>
>
> ---
> Tung-Hui Hu (HH26)           734.996.4911           http://arcfour.com
>
> : It doesn't seem to be working for me.  What version of IOS does this new
> : feature show up in?  Why hasn't it been mentioned before?  Or
> is this not
> : similar enough to be usable to block smurf and other forgery?
>
> : Danny McPherson writes...
>
> : > Cisoc already has a feature similar to this, "ip verify unicast
> : > reverse-path".
>
>