Re: nmap OS detection

[David Fifield <david () bamsoftware com>]

On Thu, Jul 16, 2009 at 03:45:31PM +0530, nandkishore kulkarni wrote:
>  i am trying to run nmap scan for os detection...
>  but i am getting the error message as "Too many fingerprints match this
> host
>  to give specific OS details"
> Please suggest how can i overcome this problem

That usually means that you did not find both and open port and a closed
port on the host. Sometimes a host is too heavily filtered to get a good
OS fingerprint. You can try scanning all ports with the -p 1-65535
option, and adding -sU to scan UDP ports too. However that will take a
long time, and if the host does not have open or closed ports at all it
won't help.

David Fifield

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