DBDriver mysql
DBDParams "host=localhost port=3306 dbname=apache user=myuser pass=mypass"
DBDMin  2
DBDKeep 4
DBDMax  10
DBDExptime 300
...
# A virtualhost
<VirtualHost *:80>
        ServerName subdomain.domain.com
        ServerAdmin mymail@gmail.com

        <Location />
                AuthName "Identification to my page"
                AuthType Basic
                AuthBasicProvider dbd

                # Also tried this line, replacing the other AuthDBDUserPWQuery below, but no luck
                #AuthDBDUserPWQuery "SELECT encrypt(password) AS password FROM password WHERE username=%s"

                AuthDBDUserPWQuery "SELECT `password`.`password` FROM `apache`.`password` WHERE `password`.`username`=%s"
                Require valid-user
        </Location>

        <Proxy *>
                Order deny,allow
                Allow from all
        </Proxy>

        ProxyRequests Off
        ProxyPreserveHost On
        ProxyPass "/" "http://192.168.1.5:32400/"
        ProxyPassReverse "/" "http://192.168.1.5:32400/"

        RewriteEngine on
        RewriteCond %{REQUEST_URI} !^/web
        RewriteCond %{HTTP:X-Plex-Device} ^$
        RewriteRule ^/plex/$ /web/$1 [P]
</VirtualHost>
...

Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator, mymail@gmail.com and inform them of the time the error occurred, and anything you might have done that may have caused the error.

More information about this error may be available in the server error log.

Apache/2.2.22 (Debian) Server at subdomain.domain.com Port 80