9100
JetDirect / Node Exporter
Medium RiskTCP — System & Infrastructure
Port Overview
Port Number
9100
Service Name
JetDirect / Node Exporter
Transport Protocol
TCP
Category
System & Infrastructure
Security Risk
Medium
Port Range
Registered (1024-49151)
What is Port 9100?
HP JetDirect for network printing and Prometheus Node Exporter for system metrics collection. Two common but unrelated services share this port.
TCP
System & Infrastructure
Security Considerations
Port 9100 (JetDirect / Node Exporter) 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.