Is it possible to make the Webalizer directory password protected?
Yes, however since this is not a feature in SD3.6 for Windows, this procedure is provided "As is".
The procedure is as follows:
1. Create the webalizer VA from the control-panel valueapps section.
2. Create a Vitual directory VA for the webalizer directory (\webalizer parameter in the virtual directory VA section)
and make the directory password protected by removing anonymous access.
The limitations to this solution are that the statistics page in the control panel will not display information anymore,
and the link to webalizer in the control-panel Valueapp page will also require a password.