:423
(TCP/UDP)
Low Risk
OPC-JobStart
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TCP/UDP — System & Infrastructure
Port Overview
Port Number
423
Service Name
OPC-JobStart
Transport Protocol
TCP/UDP
Category
System & Infrastructure
Security Risk
Low
Port Range
Well-Known (0-1023)
What is Port 423?
IBM Operations Planning and Control Job Start. Used by IBM mainframe job scheduling for initiating batch jobs.
TCP/UDP
System & Infrastructure
Security Considerations
Port 423 (OPC-JobStart) 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.