Alias /mediawiki /var/www/mediawiki

<Location /mediawiki/config>
    Order deny,allow
    Deny from all
    Allow from 127.0.0.1
    # Allow from .example.com
</Location>

<Location /mediawiki/includes>
    Deny from all
</Location>

<Location /mediawiki/languages>
    Deny from all
</Location>

<Location /mediawiki/maintenance>
    Deny from all
</Location>

<Location /mediawiki/math>
    Deny from all
</Location>