Is port 9093 (Kafka SSL / Prometheus Alertmanager) dangerous?

Port 9093 is classified as medium risk. It is commonly exposed but consider using encrypted alternatives where available and monitor activity.

Should port 9093 be open on my firewall?

Port 9093 can be open but should be monitored closely. Keep the service updated and prefer encrypted alternatives where available.

What transport protocol does port 9093 use?

Port 9093 (Kafka SSL / Prometheus Alertmanager) uses the TCP transport protocol and falls under the Messaging category.

:9093 (TCP)

Kafka SSL / Prometheus Alertmanager

Medium Risk

TCP — 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.

Related Ports — Messaging

18 MSP 87 ttylink / link 98 TACNews 99 Metagram 119 NNTP 169 SEND 194 IRC 218 MPP

Related Terms

ARP FTP HTTP ICMP IMAP NTP