With IPHost Network Monitor you can run simple snmp requests against a Fortinet device in your network.
fnVpnDialupLifetime
fn Vpn Dialup Lifetime
1.3.6.1.4.1.12356.9.1.1.3
Tunnel life time (seconds)
Back to FORTINET-MIB-280 MIB page.
IPHost Network monitor allows you to monitor fnVpnDialupLifetime on Fortinet device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Fortinet access points right now.