10250
Kubelet API
High RiskTCP — 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.