nanog mailing list archives

RE: Martian list of IP's to block???


From: "Rubens Kuhl Jr." <rkuhljr () uol com br>
Date: Fri, 1 Oct 1999 14:46:41 -0300


      Most of us can't "ip verify unicast reverse-path" our upstreams.

I think you can run it on low/mid-range Cisco routers with IOS 12, as CEF is
not 75xx privilege any more, although I have not tested myself.

Routing those networks to nul0 and turning 'ip verify unicast
reverse-path'
on CEF-enabled Cisco routers does this without CPU load or does not ?


Rubens Kuhl Jr.




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