542
commerce
Low RiskTCP/UDP — Other
Port Overview
Port Number
542
Service Name
commerce
Transport Protocol
TCP/UDP
Category
Other
Security Risk
Low
Port Range
Well-Known (0-1023)
What is Port 542?
Port 542 is assigned to 'commerce' in the IANA registry for commercial transaction processing. Never standardized; effectively unused.
TCP/UDP
Other
Security Considerations
Port 542 (commerce) 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.