It's also an Apache server - any vulnerabilities that could enable a hacker to get in?

Also has a standard FTP server with authentication...
Anonymous login with username "anonymous" leads to error...

184.172.150.4 leads to a default page..

The 404 page is on filenetworking.com - as mentioned above..
http://cryptocoin.info/404
http://filenetworking.com/404.jpg

Directories:
http://filenetworking.com/cgi-sys/ - forbidden, same on CC
http://filenetworking.com/etc/ - forbidden, same on CC
http://filenetworking.com/images/ - OPEN directory, but http://cryptocoin.info/images/ is forbidden.
http://filenetworking.com/.htaccess - forbidden, same on CC