You can use an SNMP manager to monitor event-driven alerts and operational statistics for the firewall, Panorama, or WF-500 appliance and for the traffic they process. The statistics and traps can help you identify resource limitations, system changes or failures, and malware attacks. You configure alerts by forwarding log data as traps, and enable the delivery of statistics in response to GET messages (requests) from your SNMP manager. Each trap and statistic has an object identifier (OID). Related OIDs are organized hierarchically within the Management Information Bases (MIBs) that you load into the SNMP manager to enable monitoring.
When an event triggers SNMP trap generation (for example, an interface goes down), the firewall, Panorama virtual appliance, M-Series appliance, and WF-500 appliance respond by updating the corresponding SNMP object (for example, the interfaces MIB) instead of waiting for the periodic update of all objects that occurs every ten seconds. This ensures that your SNMP manager displays the latest information when polling an object to confirm an event.
The firewall, Panorama, and WF-500 appliance support SNMP Version 2c and Version 3. Decide which to use based on the version that other devices in your network support and on your network security requirements. SNMPv3 is more secure and enables more granular access control for system statistics than SNMPv2c. The following table summarizes the security features of each version. You select the version and configure the security features when you Monitor Statistics Using SNMP and Forward Traps to an SNMP Manager.
MIB Access Granularity
SNMP community access for all MIBs on a device
EngineID, username, and authentication password (SHA hashing for the password)
Privacy password for AES 128 encryption of SNMP messages
User access based on views that include or exclude specific OIDs
SNMP Implementation illustrates a deployment in which firewalls forward traps to an SNMP manager while also forwarding logs to Log Collectors. Alternatively, you could configure the Log Collectors to forward the firewall traps to the SNMP manager. For details on these deployments, refer to Log Forwarding Options in Centralized Logging and Reporting. In all deployments, the SNMP manager gets statistics directly from the firewall, Panorama, or WF-500 appliance. In this example, a single SNMP manager collects both traps and statistics, though you can use separate managers for these functions if that better suits your network.