Apache: Block all directories except for listed ones

Question

I want to block people from accessing every directory except for /sandbox, /WebDev and /Projects

I tried this:

<Directory ^/(?<!sandbox|Projects|WebDev)+(/.*)>
    Order Deny,Allow
    Deny from all
</Directory>

but it gave a 500 error.

Answer 1

The canonical way is something like:

<Directory />
    Order Deny,Allow
    Deny from all
</Directory>

<Directory /sandbox>
    Order Deny,Allow
    Allow from all
</Directory>

<Directory /WebDev>
    Order Deny,Allow
    Allow from all
</Directory>

<Directory /Projects>
    Order Deny,Allow
    Allow from all
</Directory>