Yes, it's Captivate 5.5
The file is stored on our local server and reachable by html
I don't want to restrict access to the file, but to prohibit web browsing and emailing while the user is taking the test, to avoid cheating.
The challenge is the Captivate needs to send the result to the server (using the php script. We use Quiz Analyser to get the result from taken quizzes) while forbid user to navigate the web.
I suppose Captiavte use port 80 to send result since it's php form.
When you say "Local Server" do you mean that this is a web server and that the course is using the http:// protocol?
If this is true, then Cp will be using the standard port 80 for communication... unless the web server itself is configured to use a non-standard port (which isn't typicall). I'm struggling to figure out how you would limit web browsing and email during the quiz unless you had some additional software that prevented the launch of these apps. Or perhaps build a PC that doesn't have a web browser or email client loaded. To disable IE, I've seen IT depts. put in a fake proxy server in the Internet Settings rendering it useless.
There's also a feature in XP (not sure about Vista or Windows 7), called DEP (Data Execution Prevention) that prevents certian apps from running. Maybe on a temporary basis, you could add IE, FF, Chrome, Outlook... etc. to this list of applications that are not allowed to run.
Your IT dept. might also be able to use Group Policy to prevent these apps from running on select machines.