Security Incidents: Increase in Scans of Port 445?

["Compton, Rich" <RCompton () chartercom com>]

Hey guys,
I've noticed on Incidents.org (http://isc.incidents.org/port_details.html?port=445) that there is an increase in 
traffic to port 445.  Is this because of this "Dropper" virus?  I noticed that the MacAfee link 
(http://vil.nai.com/vil/content/v_100124.htm) stated that the risk of this virus is very low but if we are seeing such 
an increase in traffic to this port then it does seem like boxes are getting infected.  Perhaps it is more of a threat 
than was first considered (especially to home users). Is there some other method of preventing this worm from infecting 
a box other than turning off (or blocking) sharing? 

Thanks,
Rich Compton

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