:499
(TCP/UDP)
ISO-ILL
Low RiskTCP/UDP — Other
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Port Overview
Port Number
499
Service Name
ISO-ILL
Transport Protocol
TCP/UDP
Category
Other
Security Risk
Low
Port Range
Well-Known (0-1023)
What is Port 499?
ISO ILL Protocol. ISO 10161 Interlibrary Loan protocol for automated book lending between libraries.
TCP/UDP
Other
Security Considerations
Port 499 (ISO-ILL) 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.