Access to Boulevard, whether on the web-version or the mobile apps, can be restricted to pre-approved networks. Privilege Groups with "Restrict access to approved networks" enabled will not be able to access Boulevard from outside the approved networks. Network ranges must first be added before access can be limited to those approved networks.
Adding Network Ranges
To add a new network range:
Head to Manage > Security
Name the network range
Click Your current IP address is to auto-fill in the current IP
Click Add Network Range
The network range will now appear in the list. Repeat for all network ranges that should be in used.
Restricting Access to Network Ranges
Once the network ranges have been added, you can specify in the Privilege Group settings whether or not you want users assigned to that Privilege Group to be limited to using Boulevard only when in the approved networks. To restrict a Privilege Group to the approved network ranges, check the box next to Restrict access to approved networks and then Save.