RE: Malfunction with nmap

[H Dixon <tai_mai_shu2002 () hotmail com>]

Thanks for your quick reply Brandon. I updated my NIC. For a second I actually thought Nmap was working through but the 
connection still died (It doesn't show i lost my connection on my network device--just doesn't let me ping/connect to a 
website). However I might have found the culprit. Using the ethereal sniffer I discovered that in one minute of the 
scan i have 56 UDP packets and 2,856 ARP requests.  So, that's about 48 Arp requests a second. So we can be pretty much 
assured it's not nmap. Just my card can't handle all the requests at once? What's your take on the situation. Thanks,
Heath 

> Date: Fri, 5 Sep 2008 18:38:02 +0000
> From: bmenrigh () ucsd edu
> To: tai_mai_shu2002 () hotmail com
> CC: nmap-dev () insecure org; bmenrigh () ucsd edu
> Subject: Re: Malfunction with nmap
>
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> On Fri, 5 Sep 2008 15:05:03 +0000
> H Dixon <tai_mai_shu2002 () hotmail com> wrote:
>
> > Hi, I'm currently running Windows Professional XP sp3 running Nmap
> > 4.68. Here's an example of the problem i've encountered on scanning
> > your scanme.nmap.org
> ...snip...
>  
> > Any time "SYN Stealth scan" runs, I lose my internet connection
> > completely. I have to restart my computer. Disable/Enable Internet
> > connection does not fix the problem. This happens on both the gui zen
> > map and console 4.68. I'm not sure if anyone else is having this
> > problem. Just thought I'd let you know. If you're interested.
> >
> > Heath
>
> Heath,
>
> I've seen NDIS drivers in Windows die for all sorts of reasons.
> Generally they cause the system to BSOD but I've also seen them start
> throwing so many hardware interrupts that the system grinds to a halt.
>
> You should see if you can update your NIC's driver to the the latest
> version.  If that doesn't work let us know.  There are some real
> Windows networking ninjas on this list that may have a few more ideas.
>
> Brandon
>
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