You can configure Filebeat to enrich the data.remip field with GeoIP data by editing the ingest pipelines.
To do so, insert a GeoIP processor block into both
After making the changes, run: filebeat setup --pipelines
Then, via the Wazuh dashboard Dev Tools, verify your ingest pipeline has been updated: GET _ingest/pipeline
You can find more information about this in
https://www.zerozone.it/appunti-di-sistema/fortinet-vpn-events-integration-with-wazuh-siem/23260
Let me know how this goes.