:309
(TCP/UDP)
Low Risk
EntrustTime
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TCP/UDP — Security & VPN
Port Overview
Port Number
309
Service Name
EntrustTime
Transport Protocol
TCP/UDP
Category
Security & VPN
Security Risk
Low
Port Range
Well-Known (0-1023)
What is Port 309?
Entrust Time Stamping. Used by Entrust for cryptographic time stamping services to prove document existence at a specific time.
TCP/UDP
Security & VPN
Security Considerations
Port 309 (EntrustTime) 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.