Moodle Plugins directory: Block concurrent sessions quiz access rule | Moodle.org
Block concurrent sessions quiz access rule
Check "Block concurrent connections" in quiz settings. First time student will access quiz attempt, session information (Moodle session, user agent, IP) will be recorded. Then any student attempts to access this quiz attempt from other computer or device or even browser will be blocked.
This is useful to prevent situation when someone helps student to solve quiz by accessing quiz with students username/password from other computer. This is much simplier then set up subnet access rule - if teacher see that student is attempting quiz that means that no one is accessing this quiz attempt at the same time.
In case when student accidentally closes browser or computer breaks during quiz, teacher can use attempt review page to unlock this attempt and allow student to continue quiz attempt on other device.
Any attempts to continue quiz from other device are logged, so teacher can see log to determine if someone tried to cheat.
Useful links
Screenshots
Check logs for this user to check to see if his IP is changing during test. Maybe this user is using some anti-tracking software or proxy that changes user_agent. Any type quiz access is blocked with this plugin, it's logged, so you can see, if access is blocked with this plugin
Thanks for the plugin.
Gebze Moodle, this plugin can be extended or used with lesson because moodle do not provede security plugin features fom mod_lesson.
Linda Raymond-Hagen, Respondus provide complex solutions to prevent quiz cheating. If their solution are vunerable to parallel seessions, they should improve their solution. Long explanation in https://github.com/vadimonus/moodle-quizaccess_onesession/pull/11
You are trying to access quiz attempt from a computer, device or browser other than the one you used to start the quiz. If you have accidentally closed your browser, please, contact the teacher.
while i'm testing to access the quiz from another device, the system blocks the second device and after time it blocks the first device that accessed the quiz first..!
at the end, i get this error on both machines..!!
Thanks for the plugin, it's helped us a lot. We are using it on Moodle 4.1 hosted on the cloud, it works fine with us except for one issue we are facing, all of our labs are connected to one vLan IP 185.64.200.82 (local IP) but whenever the computer is restarted or we change the student PC the quiz is locked and we have to reset the attempt.
We are sure all PC have the same IP, do you think it's because we hosted Moodle on the cloud?
Any idea?
We decided to remove quickaccess onesession rule, unmarking the box in the settings, and we had a general error stating the id of the quiz was not valid during almost 5 minutes, and afterwards everything resumed ok. We are now studying every available log trying to understand what happenned.
This plugin checks not only ip, but client's session and useragent. If user closed and reopened browser, he will be blocked too. But teacher can allways unlock students attempt.
Plugin allways log any attempt to use test from other session (but maybe same ip), if you do not see this event, there's some problem with your system. Plugin settings should apply immediately, without any errors.
If you can meke reproducable scenario, plesase make issue on github