With IPHost Network Monitor you can run simple snmp requests against a Fortinet device in your network.
fnNidsIdpTable
fn Nids Idp Table
1.3.6.1.4.1.12356.5.2.2
Description
Back to FORTINET-MIB MIB page.
IPHost Network monitor allows you to monitor fnNidsIdpTable on Fortinet device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Fortinet WAN extenders right now.
