curl http://192.168.43.5:9200 this error shown curl: (7) Failed to connect to 192.168.43.5 port 9200: Connection refused zammad and insude zammad can’t search anything
The mentioned stackoverflow post does contain a solution for Elasticsearch 7 which is potentially insecure and dangerous. You should never, ever make your Elasticsearch listen globally on the internet facing interface. It contains sensitive user information and may result in DSGVO / data privacy issues.
Always ensure only relevant services / people may access these information in question.
Ensure to use authentication for Elasticsearch (look into their great documentation for that).