With IPHost Network Monitor you can run simple snmp requests against a Fortinet device in your network.
fnSysMonConnToAddr
fn Sys Monitor Connection To Address
1.3.6.1.4.1.12356.1.1.6.7.1.5
To IP address
Back to FORTINET-MIB MIB page.
IPHost Network monitor allows you to monitor fnSysMonConnToAddr 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.