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Re: Port Scanning Issues
From: ebk_lists () hotmail com
Date: 26 Jun 2007 13:20:56 -0000

Since you mention Superscan, I am going to assume that you are doing this on a windows system. Most likely a windows XP 
SP2 system. SP2 drastically changed the way the TCP/IP stack works in XP and thus created numerous problems with port 
scanning tools. I can't speak for the other tools you mention, having never run them from a windows XP box, but I know 
for a fact that Superscan results are unpredictable after installing SP2. You may want to try making your scan smaller, 
and running 'net stop shared services' before launching your scan. Sometimes, running Superscan twice will yield 
accurate results the second time. One last thing you may want to try is to use a full connect scan with superscan. This 
is very noisy, but the syn scan is flaky at best with SP2. 

I've reached the point where I no longer use superscan for these reasons, which is unfortunate, because it used to work 
really well. 

I'm sure others on the list can speak about running the other tools and getting better results from them.

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