I realize others have come across a similar situation.

I run Nessus (nmap) to scan a particular  PC that has Windows XP for open or 'listening' udp and tcp ports. I'm looking for high-numbered ports which could be used by rogue processes (trojans? etc). Sometimes the results come back as "unknown port", or unknown service(s). What to do? How does one further investigate exactly what IS running on those ports, if anything. I run  'netcat' and 'Fport' locally on the pc, and these reveal nothing. Does not even report those ports as running anything.



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Andre Brassard (CISSP #54595 / CCNA)
Phone: 508 875 8581
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