Unable to connect to Elasticsearch at http://server_ip:9200

Please format your code, logs or configuration files using </> icon as explained in this guide and not the citation button. It will make your post more readable.

Or use markdown style like:

```
CODE
```

This is the icon to use if you are not using markdown format:

There's a live preview panel for exactly this reasons.

Anyway. Where did you run that command from?

curl -XGET "http://ip_address:9200"

From the same machine your browser is running?
From the machine elasticsearch is running?