GRE support over the PAN-OS cellular interface enables you to establish GRE tunnels using cellular connections on next-generation firewalls. This feature allows you to configure GRE tunnels with dynamic IP addressing, supporting IPv4 for tunnel endpoints and traffic. You can use this capability to securely connect remote IoT devices, such as video cameras and sensors, back to a mobile headend over cellular networks.

A GRE tunnel over a cellular interface is particularly useful for large service providers looking to extend their routing infrastructure while minimizing operational expenses. By supporting dynamic addressing, it accommodates scenarios where IP addresses may change, providing flexibility in mobile and cellular environments. This GRE over cellular solution allows you to deploy NGFWs in locations without traditional Ethernet connectivity, making it ideal for government, industrial, and remote site applications where secure, reliable communication over cellular networks is essential.