A hacked router is one example... I'm not sure if I'm correct on this, but I understand it as an "All Port" scan in ISA actually means there 20 (default setting) ports scanned in quick succession, it doesn't necessarily mean ALL ports were tried. The setting for this is in the "Configuration->General->Enable Intrusion Detection and DNS Attack Detection" menu. ________________________________ From: Amy Babinchak [mailto:amy@xxxxxxxxxxxxxxxxxxxxxxxxxx] Sent: Wednesday, September 14, 2005 12:30 PM To: [ISAserver.org Discussion List] Subject: [isalist] All Port Scans, false positive http://www.ISAserver.org http://www.ISAserver.org A question comes to me and I don't have the answer but I know that you guys will. If I have a router in front of my ISA/SBS server that only allows 4 ports through, how is it that all port scans are reported from IP addresses at Microsoft and the ISP on my ISA server? Is it a false positive? If so, what in the world causes it when there are only 4 accessible ports? Amy Harbor Computer Services Small Business Computer Specialists Client Blog: http://smalltechnotes.blogspot.com/ Tech Blog: http://isainsbs.blogspot.com/ Website: http://www.harborcomputerservices.net/ ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=alist ISA Server Newsletter: http://www.isaserver.org/pages/newsletter.asp ISA Server FAQ: http://www.isaserver.org/pages/larticle.asp?typeúQ ------------------------------------------------------ Visit TechGenix.com for more information about our other sites: http://www.techgenix.com ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: dball@xxxxxxxxxxx To unsubscribe visit http://www.webelists.com/cgi/lyris.pl?enter=alist Report abuse to listadmin@xxxxxxxxxxxxx ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=alist ISA Server Newsletter: http://www.isaserver.org/pages/newsletter.asp ISA Server FAQ: http://www.isaserver.org/pages/larticle.asp?typeúQ ------------------------------------------------------ Visit TechGenix.com for more information about our other sites: http://www.techgenix.com ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: dball@xxxxxxxxxxx To unsubscribe visit http://www.webelists.com/cgi/lyris.pl?enter=alist Report abuse to listadmin@xxxxxxxxxxxxx