FortiGate VM offers a comprehensive set of features, including:

While free, these official licenses have specific resource and feature restrictions: Resources: Limited to 1 CPU and 2 GB of RAM. Maximum of 3 usable interfaces and 3 firewall policies.

There is no "free keygen" for FortiGate VM licenses. Using unauthorized key generators is illegal and poses significant security risks . However, provides an official Permanent Evaluation License

To activate the permanent trial, you must link your VM to a registered account.