Port 9200 · Elasticsearch HTTP

Port 9200 is Elasticsearch HTTP, TCP.

Elasticsearch REST API — no auth by default in older versions, leading to many public data exposure incidents.

Palo Alto

Create the service object for this port, then allow the App-ID on it. Restricting the rule to the port's service object keeps the rule working on a non-default port and stops the App-ID matching on other ports. Replace the placeholders with your own rule name and zones.

set service tcp-9200 protocol tcp port 9200

set rulebase security rules <rule-name> from <from-zone> to <to-zone> source any destination any application elasticsearch service tcp-9200 action allow

Risk and exposure

Rated high risk. Services on this port are commonly targeted by attackers. Keep it off the internet, or put it behind a VPN or a strict source allow-list, and monitor access.

Check it

• Linux ss -tlnp | grep :9200
• PowerShell Test-NetConnection <host> -Port 9200
• nmap nmap -p 9200 <host>

Related ports

• 9300 Elasticsearch Transport
• 5984 CouchDB
• 2375 Docker Daemon (HTTP)
• 2376 Docker Daemon (TLS)
• 6443 Kubernetes API Server

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