74
NETRJS-4
Low RiskTCP/UDP — System & Infrastructure
Port Overview
Port Number
74
Service Name
NETRJS-4
Transport Protocol
TCP/UDP
Category
System & Infrastructure
Security Risk
Low
Port Range
Well-Known (0-1023)
What is Port 74?
NETRJS-4 is the fourth and final port in the ARPANET Network Remote Job Entry suite. All four NETRJS ports (71-74) were defined in RFC 740 for ARPANET-era mainframe access. This port is completely unused in any modern system.
TCP/UDP
System & Infrastructure
Security Considerations
Port 74 (NETRJS-4) is classified as low risk. This service uses encryption or has a minimal attack surface, making it relatively safe to expose.
Recommendation: Standard security practices apply. Keep software updated and monitor access.