Apache 403 error
Problem: you try to connect to a given page in your web server and you get an HTTP 403 error. In your Apache error log you see a message something like this:
[error] client denied by server configuration: /opt/my_package/cgi-bin/
Note that the path in the error.log is the filesystem directory path, not the URL.
This often happens when you install a new package outside of the standard htdocs or vhosts path and that package is referenced with an alias.
The cheater way out of this problem is to add a special Directory rule to allow access to that path. These are the simplest rules that will often "just get it working". These are very permissive rules. This is a quick fix. You should ensure that this is actually what you want to do.
<Directory "/opt/my_package/cgi-bin/"> AllowOverride All Options ExecCGI FollowSymLinks Indexes Order allow,deny Allow from all </Directory>