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IPFYI
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5

RJE

Medium Risk

TCP/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.

Related Ports — System & Infrastructure

0 Reserved 1 TCPMUX 7 Echo 9 Discard 11 Systat 13 Daytime 15 NetStat 17 QOTD
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