2379
etcd Client
Critical RiskTCP — Database
Port Overview
Port Number
2379
Service Name
etcd Client
Transport Protocol
TCP
Category
Database
Security Risk
Critical
Port Range
Registered (1024-49151)
What is Port 2379?
Port 2379 is the client communication port for etcd, the distributed key-value store used by Kubernetes for cluster state storage. Kubernetes API servers and clients use this port to read and write cluster configuration and state data. Exposed etcd instances can allow complete Kubernetes cluster compromise.
TCP
Database
Commonly Used
Security Considerations
Port 2379 (etcd Client) is classified as critical risk. This port should not be exposed to the public internet. The service transmits data without encryption, making it vulnerable to eavesdropping, credential theft, and man-in-the-middle attacks.
Recommendation: Block this port at the firewall. Use encrypted alternatives (SSH, SFTP, HTTPS) instead.