Anonymous users can see fields on Calendar view even "access content" disabled

Permission "access content" is disabled for Anonymous users. Drupal shows "Access denied", as expected.

However, if the Anonymous user open a Calendar View's path, he can see the "fields" of Node defined in the Calendar View. Only when clicking on a "link to node", the popup event window shows an empty node.

How to prevent Anonymous user from seeing event information on a Calender view?

Thanks
horace

Drupal 6.12
- modules enabled:
admin_menu 6.x-1.4
advanced_help 6.x-1.2
calendar 6.x-2.x-dev (2009-May-12)
cck 6.x-2.2
date 6.x-2.2
flag 6.x-1.1
resizable_body 6.x-2.0
views 6.x-2.5