2.8 Stateful Application Feature

SS7 Firewall - Stateful Applications (SFAPP) allows vSTP to validate the messages coming in for a subscriber by validating them against the Visitor Location Register (VLR). The last seen details of the subscriber can be fetched from the Home Location Register (HLR). Once the HLR provides a validity of the new VLR, vSTP then allows the message into the network. If the message is not validated, it is handled as per configuration (either silent discard, fallback, or respond with error).