After working with both ISP's that the scan originated from, 
we discovered they were both trying out a new Linux network 
neighborhood browser called Gnomba.

More info on this tool can be found at:

http://stute.jacobus.stevens-tech.edu/~gandalf/proj/gnomba/in
dex.html

Apparently it is a senior project at this university, and there 
are still a few bugs.

I am still trying to determine whether it only browses a 
specific work group like the MS network neighborhood, or if it 
scans for _any_ workgroup exposed to the net.  

Guess this is why we block SMB at the firewall...

I did get a couple reports from the list on other address 
ranges that were scanned, so this doesn't seem to be a local 
 issue.

Thanks for all your responses.

Dan Lenhard
System Admin
[EMAIL PROTECTED]
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