If you are managing the router and if you have correct routing from router to your internal server, you just need firewall policy to allow traffic from ext_interface to int_interface. If router doesn't have routing info about your server, then VIP on FortiGate, external IP will be IP from 192.168.2.0/24 (probably IP of FortiGate's external interface) and forward it to internal IP of the server.
Hey there! Connecting a router to an internal Elastic server can be a bit tricky. To allow your router to access the server, you'll need to configure it to send its logs to the Elastic server. In terms of your Fortigate, you'll want to make sure you have the proper ports open and possibly set up a static IP for the server. If you need more specific guidance, feel free to check out this link https://routeripnet.com/ip/192-168-8-1/ for more information. Let me know if you have any other questions.
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