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Network Security Incidents
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Re: Spider with improbable IP address

Subject: Re: Spider with improbable IP address
Date: Fri, 15 Oct 2004 16:19:46 -0600 (MDT)

On Fri, 15 Oct 2004, Bennett Todd wrote:


The .0 address is routinely the network number, not a usable IP address --- but this is only because CIDR blocks used as IP nets are routinely /24 and smaller. Consider the perfectly legitimate IP network (in RFC 1918 space, for illustration purposes)

        10.0.0.0/23

Here are the relevent details:

255.255.255.128 netmask

I suspect you really are going for 255.255.254.0 as the netmask here. :-)

Ric

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