9093
Kafka SSL / Prometheus Alertmanager
Medium RiskTCP — Messaging
Port Overview
Port Number
9093
Service Name
Kafka SSL / Prometheus Alertmanager
Transport Protocol
TCP
Category
Messaging
Security Risk
Medium
Port Range
Registered (1024-49151)
What is Port 9093?
Port 9093 is used by Apache Kafka for SSL/TLS-encrypted broker connections, providing a secure alternative to the plaintext port 9092. It is also the default port for Prometheus Alertmanager, which handles alert routing and notification for the Prometheus monitoring system. Both services are important components in modern cloud-native infrastructure.
TCP
Messaging
Commonly Used
Security Considerations
Port 9093 (Kafka SSL / Prometheus Alertmanager) is classified as medium risk. While this service is commonly exposed, consider using encrypted alternatives where available.
Recommendation: Keep the service updated. Monitor logs for unusual activity.