If you need to prevent users from logging-in from outside your organization's network, you can restrict IP addresses.
Setting-Up:
1. Click on your name in the top-right-hand-corner
2. Click on IP Addresses
3. Then enter the IP addresses (individual addresses) or IP address ranges as shown in the table:
NOTE:
1. IP address ranges need to be set up in CIDR format (i.e. with the /XX number at the end)
e.g. 111.222.0.0/16 (the /16 indicates that the last two segments can vary)
2. These restrictions apply to all users within the organization (Read only, User, Editor & Admin).