Alias /webdav   /var/www/webdav
<Location /webdav>
        DAV On
        AuthType Digest
        AuthName "webdav"
        AuthUserFile /etc/apache2/webdav.passwd
        # <LimitExcept GET OPTIONS>
        Require valid-user
        # </LimitExcept>

        Order allow,deny
        Allow from 192.168.1.0/24
        # Allow from All
</Location>