:543
(TCP)
High 风险
Kerberos Login
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TCP — Remote Access
端口概览
端口号
543
服务名称
Kerberos Login
传输协议
TCP
类别
Remote Access
安全风险
High
端口范围
知名端口 (0-1023)
什么是端口 543?
Port 543 is assigned to klogin, the Kerberos-authenticated rlogin service. Superseded by Kerberos-authenticated SSH.
TCP
Remote Access
安全注意事项
端口543（Kerberos Login）被归类为高风险。此端口是自动扫描和暴力破解攻击的常见目标。如必须暴露，请将访问限制为已知IP地址。
建议：使用防火墙规则将可信IP列入白名单。启用速率限制和入侵检测。