Media 1 was the Club Penguin server in charge of storing game files, such as .swf files. You could access single files but not the complete database. When you tried to go to media1.clubpenguin.com, it denied your access because your IP address is not in the system.
The interface behind the forbidden page is unknown. Club Penguin has used a .htaccess file to block all IPs except for their IP, so only the Club Penguin Staff had access to it.