Create WebDAV to Publish Calendars

1. Enable WebDAV 

   a2enmod dav
   a2enmod dav_fs

2. Create File System 

   mkdir /home/sites/www/webdav
   chown www-data:www-data /home/sites/www/webdav

3. Set Up Password Protection 

   htpasswd -c /etc/apache2/webdav.password username
   chown root:www-data /etc/apache2/webdav.password
   chmod 640 /etc/apache2/webdav.password

4. Configure Apache 

   nano /etc/apache2/sites-available/default
   <Location /webdav>
       Options Indexes
       DAV On
       AuthType Basic
       AuthName "webdav"
       AuthUserFile /etc/apache2/webdav.password
       Require valid-user
   </Location>

5.