5
RJE
Medium RiskTCP/UDP — System & Infrastructure
Port Overview
Port Number
5
Service Name
RJE
Transport Protocol
TCP/UDP
Category
System & Infrastructure
Security Risk
Medium
Port Range
Well-Known (0-1023)
What is Port 5?
Remote Job Entry. A legacy protocol used for submitting batch jobs to mainframe computers over a network.
TCP/UDP
System & Infrastructure
Security Considerations
Port 5 (RJE) 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.