In the last week, I've started seeing one to several port sweeps per day on port 139, of a particular nature. Typically the sweep will hit .1 to .255 of a 24 bit net mask sized address block (generally called, "Class C" although this can be erroneous) four times. Have found nothing written on any new worms targetting this port. Source machines are largely North American. Anyone heard or have ideas about what's going on? My perimeter firewall's rejecting this traffic, so I get a log entry but no packet detail (yet.) John Campbell, Information Security Engineer Washington School Information Processing Cooperative (WSIPC) E-mail: jcampbellat_private ---------------------------------------------------------------------------- This list is provided by the SecurityFocus ARIS analyzer service. For more information on this free incident handling, management and tracking system please see: http://aris.securityfocus.com
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