| Klaus Johannes Rusch 2004-02-01, 11:33 pm |
| Michael Tuzi wrote:
quote:
> I am designing a site where students will be taking timed tests and I
> want to remove any possibility of a given student being able to
> propagate a test via printing or saving to disk. I know that I have
> been to sites where the page contents could not be seen when I tried
> to view the source or printed. Is it possible to accomplish this with
> caching restrictions in the header or directory directives? Using SSL?
> I'm running Apache 2.0.40 on Redhat 9.
You cannot prevent Web users from saving Web content, if your server sends
it to their browser, they can download it. You can make it harder by
encrypting the connection so that packet sniffers are no longer useful, by
using Javascript to block the right mouse button and a ton of other
things, but you cannot stop anyone from sending a request that looks
exactly like what the browser sent, and store the results.
--
Klaus Johannes Rusch
KlausRusch@atmedia.net
http://www.atmedia.net/KlausRusch/
|