Ticho

We've disabled the ability to run applications outside of Word, Chrome, and videos that we put on there. USB drives are also disabled. Not running in the system tray, but I think it might be related to the task manager. I tried closing the two files related to NSS clients (client32 and crsrs) to replicate it, but no dice.

I'm a fairly observant and tech-savvy guy, so it kinda irks me when someone gets the jump on me and learns how to get around NSS. The thing is that I work in a controlled jail-like facility, so everything is monitored, students and patted down every morning, and all personal belongings are removed from them long before they get to the classroom. The way students access a lot of assignments are through various websites and sub-websites, so instead of approved only, I leave them on block restricted. The first (solved) problem: About a month ago, I noticed a student's computer was disconnected from the network, so that already triggered an alarm in my head. But I gave him the benefit of the doubt and had him move to another computer. Not even thirty minutes later, it happened again. Fortunately, we have cameras on both sides of the room, so after school I found out he was doing something with the LAN cable to disconnect it from my viewing it on NSS, but he could still go on the websites that weren't blocked. That ended that problem. Second time around: Different student, but essentially same deal happening as before, although it didn't involve disconnecting the LAN cables. Happened on one computer, moved him, happened on the new one within five minutes, and had him removed until the staff and I could figure it out. We rolled back the cameras, but both times he made no movement to remove the LAN cables, but both times right before his computer disconnected, he looked around the classroom to make sure nobody was watching, and within five seconds, he types something in, ends a process or something, and you can see the screen flicker on the monitor (which is indicative of it being disconnected from NSS). I've tried multiple things to reproduce the problem, but student computers are set up to not be able to close most processes, and the ones I could close didn't reproduce the bug. If anyone has anything to prevent students from doing stuff like this, it would be greatly appreciated. We could have an additional staff member sitting on one student, but that would be a ridiculous waste of resources. Thanks for any support you can offer!