Tools / Port checker / 9200
Is port 9200 open?
Port 9200 is Elasticsearch. Enter your server below to test it from Dallas, Amsterdam and London.
What port 9200 is used for
The Elasticsearch REST API, used to index and search data. Port 9300 carries traffic between nodes of the same cluster.
Should port 9200 be open?
Should not face the internet directly. Exposed Elasticsearch clusters are a leading cause of data leaks. Bind to private addresses and enable security features.
How to open port 9200
Ubuntu or Debian with ufw, allowing only your own address (replace 203.0.113.10):
sudo ufw allow from 203.0.113.10 to any port 9200 proto tcp
Rocky, Alma or CentOS with firewalld:
sudo firewall-cmd --permanent --add-port=9200/tcp && sudo firewall-cmd --reload
Windows Server, in PowerShell as administrator:
New-NetFirewallRule -DisplayName "Port 9200" -Direction Inbound -Protocol TCP -LocalPort 9200 -Action Allow
Then check that the service listens on all addresses, not only 127.0.0.1, and test again above.
Check another port
Run your service on a PrivateByte server: a firewall you control and every port yours to open.