nmbd port 137 in Samba Configuration..

Hi All,

I have one question related to nmbd port (137).
I installed and configured samba server on Solaris 10 on x86 machine,
and also work fine. But i have a query related to nmbd port, its show
running but when i check that port by using any port scanner like
netstat, nessus tool or any other tool its not any nmbd port lisson on
that machine.
Is this possible solaris machine not show nmbd port listen on that
machine?
I also try by using swat, in that it shows nmbd service running.
Any one can face this problem?
Thanks in advance..

-Kiran