:5353
(UDP)
Low 风险
mDNS (Multicast DNS)
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UDP — DNS
端口概览
端口号
5353
服务名称
mDNS (Multicast DNS)
传输协议
UDP
类别
DNS
安全风险
Low
端口范围
已注册 (1024-49151)
什么是端口 5353?
Port 5353 is used by mDNS (Multicast DNS), which enables zero-configuration DNS name resolution on local networks without a central DNS server. Apple's Bonjour and Linux's Avahi implement mDNS to allow devices to discover services like printers, AirPlay, and Chromecast. Queries and responses are sent to the multicast address 224.0.0.251.
UDP
DNS
常用
安全注意事项
端口5353（mDNS (Multicast DNS)）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。