I've set up Squid to run as a transparent proxy for a few public computers. We have quite a limited bandwidth available, so it has been necessarily to block certain audio/video file types with Squid.

I have problems with certain MIME types. I've done excessive searching with no results (iana.org etc.). And these are the file types:

ISO (image file)

NRG (Nero image file)

CCD (CloneCD image file).

What on earth is the MIME type for these files? Based on my searches, ISO should have the MIME type application/octet-stream, but it does not work. As to *.nrg and *.ccd, I found no relevant information. Thanx