OS Fingerprinting

[Samuel Petreski]

Hi,

I'm trying to use plugin OS Identification (11936), and am having problems
when fingerprinting a Linux host. I have enabled scanning of ports TCP
139,445 and UDP 113 and also am Ping the remote host and SYN Scan. I'm using
Nessus 2.0.10. 

I have been successful in identifying all Windows flavors, but have had no
luck with any Linux flavor.

Any help would be appreciated.

--Samuel