Hi Javier,
as far as we understand your question, you want to monitor events from a FortiGate firewall by using Wazuh. If not, please excuse us and re-formulate the question.
Wazuh offers the possibility of collecting or ingesting FortiGate events via remote syslog:
Sample configuration:
<ossec_config>
<remote>
<connection>syslog</connection>
<allowed-ips>192.168.2.0/24</allowed-ips>
</remote>
<ossec_config>
The Wazuh manager has a default ruleset (rules and decoders) which is able to process alerts generated by the FortiGate devices (and very much other makers as well). It is currently compatible with versions 3, 4 and 5 of FortiOS.
Please, follow the above and below instuctions to set it up and let us know if you have any problem:
Regards,
Jose