:853
(TCP)
Low 风险
DNS over TLS
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TCP — DNS
端口概览
端口号
853
服务名称
DNS over TLS
传输协议
TCP
类别
DNS
安全风险
Low
端口范围
知名端口 (0-1023)
什么是端口 853?
DNS over TLS (DoT). Encrypts DNS queries between client and recursive resolver using TLS, preventing eavesdropping and manipulation of DNS traffic.
TCP
DNS
常用
安全注意事项
端口853（DNS over TLS）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。