Penetration Testing
Re: nmap in Virtualbox weirdness Nov 10 2012 08:06PM
Andy Meyers (andy meyers hushmail com)
What are the specs on your host machine? I'm thinking it may be a resource problem.

Bog Witch <iambogwitch (at) gmail (dot) com [email concealed]> wrote:

>Hi All,
>
>The setup:
>Host: Ubuntu 12.04 / 12.10
>Virtualbox Guest: Ubuntu 12.04 / 12.10
>
>The issue:
>
>From the guest OS, running nmap with anything greater than T2, the NIC
>becomes 'stuck' a simultaneous ping of a local box will start
>reporting 'Destination host unreachable'
>If the nmap scan is set above T3 the NIC freeze is almost
>instantaneous. Killing the nmap process returns the NIC to normal
>behaviour within approximately 30 seconds.
>Under Virtualbox the NIC can be set to NAT or bridged, it makes no difference.
>This occurred under both guest OSes and hosts running different
>versions of nmap. This makes me think it's not an nmap issue but
>Oracle forums have not brought forward any help.
>
>Any thoughts gratefully received.
>
>Boggy
>
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