[Samba] disconnect a user

[Marc Fromm]

I need to disconnect some samba connections to my linux redhat server.
I searched online and found these two tips but neither work:

1. Set the deadtime parameter to specific time in the smb.conf file
my smb.conf file does not have the parameter deadtime listed

2. Use kill command to kill the smbd PID.
Kill -15 <PID>
I tried that and after killing my own connection I could still open and save files to the samba share that I had connected to.

Is there a command that I can use to disconnect a user's samba connection?

Thanks

Marc