What method is commonly used to enforce geographical restrictions for system access?

Geofencing is the method commonly used to enforce geographical restrictions for system access. It operates by creating a virtual perimeter around a specific geographic area. When a device enters or exits this defined area, actions can be triggered, such as allowing or blocking access to certain services or systems. This is particularly useful for applications and services that require access controls based on a user's location. For instance, a business could use geofencing to restrict access to sensitive internal systems only to employees who are physically present within the business's premises or geographic boundaries.

Geofencing leverages location data—often using GPS, RFID, Wi-Fi, or cellular data—to determine the user's position in real-time. This provides a dynamic and responsive way to manage access based on geographical criteria, making it a preferred choice for organizations concerned with security in relation to physical locations.

While firewalls and IP filtering can control access based on IP addresses and may offer basic geographical restrictions, they do so less dynamically. IP filtering, for example, relies on mapping IP address ranges to geographical locations, which can be imprecise and can lead to legitimate access being inadvertently blocked or allowed. NAT, or Network Address Translation, primarily deals with the translation of IP addresses and does not specifically provide mechanisms for