From: Swan, Jay (jswan@sugf.com)
Date: Tue Apr 24 2007 - 11:38:24 ART
One point on using Null0 to discard packets: a packet that is sent to
the Null0 interface causes the router to send an ICMP unreachable
message to the source. This may be undesirable in many situations (such
as black-holing a DoS attack). If the ICMP unreachable is not desired,
you can route the packet to a loopback interface instead.
Jay
CCIE #17783
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
maureen schaar
Sent: Tuesday, April 24, 2007 6:58 AM
To: Godfrey Wakachunga
Cc: ccielab@groupstudy.com
Subject: Re: Null0
A route to null0 is very useful for dropping unwanted packets without
burdening the cpu.
Maureen
On 4/24/07, Godfrey Wakachunga <gwakachunga@cfcbank.co.ke> wrote:
> Kindly could someone explain to me the significance of the above
> interface.Thanks
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