Anti-overbilling with FortiOS Carrier
FortiOS Carrier can be configured to assist with anti-overbilling measures. These measures ensure that the customer is only billed for the connection time and data that they actually use.
Anti-overbilling involves:
- Configuring the overbilling settings in the GTP profile to notify the 2G or 3G Gi firewall or the 4G SGi firewall when a GTP tunnel is deleted
- FortiOS Carrier cleaning up any still running sessions when the Gi or SGi firewall receives a notification from the Gn/Gp/S5/S8 firewall about a GTP tunnel being deleted. This way, the Gi or SGi firewall prevents overbilling by blocking traffic initiated by other users.