With IPHost Network Monitor you can run simple snmp requests against a Fortinet device in your network.
fnAvCfgBlkFileHttp
fn Av Configure Blk File Http
1.3.6.1.4.1.12356.6.3.5
The file will be blocked if the file size over the limit, which is in terms of the percentage of the memory size (10M).
Back to FORTINET-MIB MIB page.
IPHost Network monitor allows you to monitor fnAvCfgBlkFileHttp on Fortinet device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Fortinet switches right now.