:753
(TCP/UDP)
High 风险
Kerberos userreg
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TCP/UDP — Security & VPN
端口概览
端口号
753
服务名称
Kerberos userreg
传输协议
TCP/UDP
类别
Security & VPN
安全风险
High
端口范围
知名端口 (0-1023)
什么是端口 753?
Kerberos v4 user registration service. Deprecated and replaced by kadmin on port 749 in Kerberos v5.
TCP/UDP
Security & VPN
安全注意事项
端口753（Kerberos userreg）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。