To add an administrator password to Net Nanny for Mac:

• Launch the Net Nanny application
• Click on the Net Nanny menu (The Net Nanny menu is located in the upper left hand corner of the screen next to the apple icon.)
• Click on Preferences
• Click on Password
• Check the 'Protect Net Nanny for Mac X with a password' box
• Set an administrator password.
• Close the Net Nanny for Mac application

You will need to enter the administrator password every time the Net Nanny for Mac application is opened.

Users without the administrator password will have no access to the Net Nanny for Mac application

Further security under Mac OS X:

Net Nanny for Mac is a content control program: it is designed to filter and block certain Internet content according to the settings you choose.

Net Nanny for Mac is not designed to limit a user's access to the Macintosh itself.

Net Nanny for Mac does not include functions for limiting access to applications, control panels, files on the hard drive, or system files.

Mac OS X is a multi-user environment. Net Nanny for Mac for Mac OS X should be used in conjunction with the built-in security features of Mac OS X. We suggest that you set up at least two separate accounts on the machine: one for yourself to act as Administrator, and another account for the filtered user that does not have Administrator privileges. You can do this through System Preferences in the 'Accounts' pane. If your filtered user does not already have a user account, click the 'New User...' button. This will open a form that you will need to fill out with information for the user's name, password, etc. The important step here is to NOT check the box for 'Allow user to administer this computer'. Click OK to create the new user account.

If your filtered user already has an account, in the 'Accounts' pane of System Preferences, choose this user then click on 'Edit User...'. Make sure that the box for 'Allow this user to administer this computer' is NOT checked.

While in the 'Accounts pane, let's turn our attention to the Admin account. You are probably going to want to change this information to match yourself. You should also change the password to something that your filtered user will not know.

If this computer is used mainly by your filtered user, you may want to use the 'Set Auto Login...' feature of 'Accounts' to log this account in at start-up. At least make sure that it does not still log in the Admin account automatically.

As an ongoing precaution you will need to make sure that you do not leave the machine logged in as the Administrator when your filtered user is using it; always log out the Administration account.