:309
(TCP/UDP)
Low 风险
EntrustTime
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TCP/UDP — Security & VPN
端口概览
端口号
309
服务名称
EntrustTime
传输协议
TCP/UDP
类别
Security & VPN
安全风险
Low
端口范围
知名端口 (0-1023)
什么是端口 309?
Entrust Time Stamping. Used by Entrust for cryptographic time stamping services to prove document existence at a specific time.
TCP/UDP
Security & VPN
安全注意事项
端口309（EntrustTime）被归类为低风险。该服务使用加密或攻击面极小，相对安全可以暴露。
建议：应用标准安全实践。保持软件更新并监控访问。