If you use FortiManager or FortiAnalyzer , ensure they are upgraded before the FortiGate. A newer FortiOS version often cannot communicate with an older FortiManager. fortigate firmware
Detecting network-based attacks. Web Filtering: Controlling access to websites. If you use FortiManager or FortiAnalyzer , ensure
Before making any structural changes to your network, you must accurately verify the running build of your system. You can find this data using either the web management console or the command-line interface (CLI). Via the Web GUI Recommended version on Fortigate - Fortinet Community Web Filtering: Controlling access to websites
, though manual control is generally preferred for major versions [17, 25]. upgrade path for your current FortiGate model and version? Firmware image issue - the Fortinet Community!
You can have the latest definitions on an old firmware, but you cannot patch OS-level CVEs with definitions.