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Re: Zenmap Crashing and CPU Utilisation hangs at 50%
From: Ray Middleton <ray.middleton () gmail com>
Date: Mon, 17 Jan 2011 14:11:11 +0000

Hi David,

Thanks for the response.

No the problem does not happen when switching to the topology tab, I never
get that far with the scans.  It is just on the main results window.

I've included the output.xml file and also an screenshot so you can see what
is happening from a graphical standpoint as well as the xml.

I forgot to add in my initial email that this is on Windows 7 pro 64bit.
Once manually closing out the application after it becomes unresponsive the
windows error is "NMAP front end results viewer is not responding".


On 15 January 2011 06:22, David Fifield <david () bamsoftware com> wrote:

On Fri, Jan 14, 2011 at 10:23:25AM +0000, Ray Middleton wrote:

I am currently trying to scan blocks of IP addresses in Zenmap v5.21.
However, Zenmap keeps on switching to "not responding", CPU utilisation
jumps to 50% and the programme hangs until it is manually closed out.  I
not scanning relatively large blocks of IP's when this happens and it can
happen with as few as 254 addresses.

This is the same problem I am having, sadly I can't find much more about
let alone a fix:

I am running it on Win7Pro, when I scan addresses individually or in
chunks of 10-40 IP's it works OK, but I have thousands of IP addresses to
get through and this is just not feasible right now.

Is this a known error with Zenmap and is there a work around?  Maybe I am
doing something wrong?

Do it happen only when opening the Topology tab? That's a known user of
CPU and memory.

Maybe you can send an XML file that demonstrates the problem? Just run
your same Nmap command from the command line, adding "-oX output.xml" to
save to a file.

David Fifield

Attachment: output.xml

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