The function of img_auth.php is to output files from a private wiki. This wiki is configured as a public wiki. For optimal security, img_auth.php is disabled.
MediaWiki:Img-auth-public
From HFUnderground
This site is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. Some links may be affiliate links. We may get paid if you buy something or take an action after clicking one of these.