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@merit.edu [mailto:owner-nanog@merit.edu]On Behalf Of Hui-Hui Hu Sent: Thursday, October 22, 1998 2:34 AM To: Phil Howard Cc: nanog@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".