I would like to monitor with the prtg the firmware of firewalls (FortiGates). This is also possible with an SNMP custom string, which gives me the version as a message back. However, I would now like that if the message / firmware has not changed after 90 days the sensor falls on alert and after 180 days on Down state. Is that possible?
Is it possible that a sensor will turn on the status alert or down after a certain time?