:100
(TCP/UDP)
Low Risk
Unassigned
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TCP/UDP — System & Infrastructure
Port Overview
Port Number
100
Service Name
Unassigned
Transport Protocol
TCP/UDP
Category
System & Infrastructure
Security Risk
Low
Port Range
Well-Known (0-1023)
What is Port 100?
Port 100 is unassigned in the IANA registry. Sometimes informally used for development or testing purposes.
TCP/UDP
System & Infrastructure
Security Considerations
Port 100 (Unassigned) 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.