Disable internet for student machines

[jomtones]

I found a free bit of software to do this a few years ago but the I.T. department at my college delayed and back-pedalled for long enough for me to give up on getting it installed.

Have better access to permissions now but can't find the damn software anymore, does anyone have any tips? The one I found involved a quick install on all the machines on the LAN and then they could be disconnected from the net by one master machine... handy to help my students focus at times (and when I'm out of the class).

 

[DelJo63]

use a proxy server to control the use of port 80

I assume you have Windows Server.

1) reconfig student systems so the browser REQUIRE a proxy, ie, there's no direct access to port 80

2) client requests flow to the proxy where it and only it has access to port 80

3) when you need to leave, stop the proxy service​

this will leave the LAN active and all print/file sharing in place

 

[jomtones]

Thanks for that... we don't have access to the server unfortunately. Anyone interested, I managed to find the old bit of software I mentioned, haven't tested it yet but it looks like it will do the job:
(wont let me post link directly)
sourceforge.net/projects/rclogon