Changing your password is best done via MacAdministrators 'Set Password...' command in the 'Special' menu of all MacAdministrator controlled computers or select the 'Change Password' radio button on the login dialog box and enter your user name and current password as if you were loging in normally, you will then be asked for a new password.
Your password is used for all services provided by this server.
Changing your password can also be done with the 'Chooser' application on any Mac.
