← Port Encyclopedia
6443

Kubernetes

TCP
Container Critical Risk
Kubernetes API server — cluster management, RBAC bypass, secret access

🔍 How to Scan Port 6443

nmap -sV -p 6443 target
nmap -sV -sC --script=banner -p 6443 target
nc -zv target 6443

🛡️ Security Considerations

  • Scan port 6443 with nmap -sV to identify the exact service and version
  • If Kubernetes is not needed, close or firewall this port immediately
  • Check for default credentials if a management interface runs on this port
  • Use searchsploit kubernetes to find known exploits
  • Monitor traffic on port 6443 with Wireshark or tcpdump for anomalies
  • Ensure the service is patched to the latest version to prevent known CVE exploitation

🔗 Related Container Ports

Port 2375
Docker
Port 2376
Docker-TLS
Port 2379
etcd
Port 2380
etcd-Peer
Port 9000
Portainer
Port 10250
Kubelet
Port 10255
Kubelet-RO
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