Infrastructure & orchestration ports
9 infrastructure & orchestration ports: what each one does, its protocol, and whether it is secure by default.
SubnetKit lists 9 infrastructure & orchestration ports, using TCP. 0 of 9 are formally registered with IANA rather than just a widely followed convention.
1 of the 9 infrastructure & orchestration ports is encrypted by default; the rest send data in clear text unless wrapped in TLS, SSH, or a VPN.
Click any port below for its full page: what it does, its protocol, and whether it is safe to expose.
| Port | Service | Protocol | What it does |
|---|---|---|---|
| 2181 | ZooKeeper | TCP | Apache ZooKeeper client port |
| 2375 | Docker | TCP | Docker daemon API (unencrypted) |
| 2376 | Docker TLS | TCP | Docker daemon API (TLS) |
| 2379 | etcd | TCP | etcd client API |
| 2380 | etcd peer | TCP | etcd peer communication |
| 6443 | Kubernetes API | TCP | Kubernetes API server |
| 8200 | Vault | TCP | HashiCorp Vault API |
| 8500 | Consul | TCP | HashiCorp Consul HTTP API / UI |
| 10250 | Kubelet | TCP | Kubernetes kubelet API |
Frequently asked questions
Which ports are in the Infrastructure & orchestration category?
port 2181 (ZooKeeper), port 2375 (Docker), port 2376 (Docker TLS), port 2379 (etcd), port 2380 (etcd peer), port 6443 (Kubernetes API), port 8200 (Vault), port 8500 (Consul) and port 10250 (Kubelet).
How many infrastructure & orchestration ports does SubnetKit list?
9, covering TCP. 0 of them are formally registered with IANA.
Are infrastructure & orchestration ports secure by default?
1 out of 9 are encrypted by default. Check each port's page for its specific encryption status.
Which infrastructure & orchestration port has the lowest number?
Port 2181 (ZooKeeper). Port 2181 is the client port for Apache ZooKeeper, a coordination service that older Kafka clusters and other distributed systems use to elect leaders and store configuration. Newer Kafka versions can run without ZooKeeper, but it remains common in existing deployments.