Port 2379 · etcd Client

Port 2379 is etcd Client, TCP.

etcd distributed key-value store — client API. Used heavily by Kubernetes for all cluster state.

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-2379 protocol tcp port 2379

set rulebase security rules <rule-name> from <from-zone> to <to-zone> source any destination any application ssl service tcp-2379 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 :2379
• PowerShell Test-NetConnection <host> -Port 2379
• nmap nmap -p 2379 <host>

Related ports

• 2380 etcd Peer
• 6443 Kubernetes API Server
• 4789 VXLAN
• 2377 Docker Swarm
• 9300 Elasticsearch Transport

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