Should port 10250 be open on my firewall?

Port 10250 should only be open with strict firewall rules whitelisting trusted IP addresses. Enable rate limiting and intrusion detection systems.

What transport protocol does port 10250 use?

Port 10250 (Kubelet API) uses the TCP transport protocol and falls under the System & Infrastructure category.

:10250 (TCP)

Kubelet API

Q: Is port 10250 (Kubelet API) dangerous?

Port 10250 is classified as high risk. It is a common target for automated scanning and brute-force attacks. Restrict access to trusted IPs if exposure is necessary.

High Risk

TCP — System & Infrastructure

Port Overview

Port Number 10250

Service Name Kubelet API

Transport Protocol TCP

Category System & Infrastructure

Security Risk High

Port Range Registered (1024-49151)

What is Port 10250?

Used by the Kubernetes Kubelet for the HTTPS API that the API server and other components use to communicate with each Kubernetes node. Exposes node-level operations like pod management and log streaming. Unauthenticated access can expose serious cluster security risks.

TCP System & Infrastructure Commonly Used

Security Considerations

Port 10250 (Kubelet API) is classified as high risk. This port is a common target for automated scanning and brute-force attacks. If you must expose it, restrict access to known IP addresses.

Recommendation: Use firewall rules to whitelist trusted IPs. Enable rate limiting and intrusion detection.

Related Ports — System & Infrastructure

0 Reserved 1 TCPMUX 2 Management Utility 3 CompressNET 4 Unassigned 5 RJE 6 Unassigned 7 Echo

Related Terms

Bandwidth Latency Packet Loss Ping Throughput ASN