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Scanning multiple IP's provides weak results

Subject: Scanning multiple IP's provides weak results
Date: Wed, 21 Sep 2005 22:26:40 +0100
I am scanning multiple IP's in the Nessus target range.  For example
10.10.10.10/27 it will scan and come back with hardly any information on
open ports which I know are open not even the ftp ports that are open.
However if I type a single IP into the target box and scan, it will come
back with the correct results.

 

What am I doing wrong here?  Is it not good to scan many IP's, nmap from
command line has no problem.

 

Thanks for you time

 

Andy

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