This field is optional.
You can restrict access for a quiz to particular subnets on the LAN or Internet by specifying a comma-separated list of partial or full IP address numbers.
This is especially useful for a proctored quiz, where you want to be sure that only people in a certain room are able to access the quiz.
For example: 192.168. , 18.104.22.168/20, 22.214.171.124, 126.96.36.199-20
There are four types of numbers you can use (you can not use text based domain names like example.com):
Spaces are ignored.