:563
(TCP)
Low 风险
NNTPS
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TCP — Messaging
端口概览
端口号
563
服务名称
NNTPS
传输协议
TCP
类别
Messaging
安全风险
Low
端口范围
知名端口 (0-1023)
什么是端口 563?
Port 563 is assigned to NNTPS (Network News Transfer Protocol over TLS), the encrypted version of NNTP for Usenet news. Usage has declined.
TCP
Messaging
安全注意事项
端口563（NNTPS）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。