How to ensure that UTM is not infected by Trojan virus

[cxc]

How to ensure that UTM is not infected by Trojan virus

[AEK]

UTM is unified threat management (or do you mean something else?).

So UTM is the protecting system on FortiGate that protects you traffic against Virus, bad URLs and other attacks.

So I guess you mean you want to know if FG has catched some virus in your traffic, right? You just need to go to menu: Log & Report > Antivirus, and there you will find the virus logs.

Prerequisite you need to have at least UTM log enabled in your firewall policies.