Monitoring Fortinet Firewalls with Cacti

Cacti (http://www.cacti.net) is a popular SNMP graphing tool that can monitor pretty much any device which supports SNMP. Here is a quick guide on how to configure Cacti to monitor Fortigate interfaces, total active sessions, and system resource utilization. I will leave installing Cacti up to you :)
Start in the Console by clicking Data Templates in the Templates section. Click Add in the top right corner and enter the values from the following screenshot. Then click Save.

Afterwards create two more Data Templates based on the next two screenshots.



The Data Templates tell Cacti which values (OIDs) to monitor.

Next, go to Graph Templates in the Templates section. As before click Add in the top right corner and define the following two Graph Templates: Fortigate – System Resources and Fortigate – Total Sessions. The System Resources graph will monitor CPU and memory utilization in one combined graph.

Next create a Host Template as per the screenshot below.

Now you are ready to start monitoring firewalls. Under Management go to Devices and click Add. Define a new device. Sample values are in the screenshot.

That’s it. Graphs will start to update after Cacti’s next polling cycle.