If you must test a downloaded ISO, run it in a Virtual Machine (VM) like VirtualBox or VMware first. Never boot your main hardware from an unverified ISO.
The "Index of" search method is largely obsolete for legitimate software needs. Today, safer and faster alternatives exist: parent directory index of software iso new
Using the basic keyword is a start, but adding specific operators can help you find exactly what you need. If you must test a downloaded ISO, run