Is port 464 (Kerberos Change Password) dangerous?

Port 464 is classified as critical risk and should not be exposed to the public internet. It transmits data without encryption, making it vulnerable to eavesdropping and credential theft.

Should port 464 be open on my firewall?

No, port 464 should not be open to the public internet. Block it at the firewall and use encrypted alternatives such as SSH, SFTP, or HTTPS instead.

What transport protocol does port 464 use?

Port 464 (Kerberos Change Password) uses the TCP/UDP transport protocol and falls under the Security & VPN category.

:464 (TCP/UDP)

Kerberos Change Password

Critical 风险

TCP/UDP — Security & VPN

端口概览

端口号 464

服务名称 Kerberos Change Password

传输协议 TCP/UDP

类别 Security & VPN

安全风险 Critical

端口范围知名端口 (0-1023)

什么是端口 464?

Port 464 is assigned to kpasswd, used for changing Kerberos passwords in Active Directory and MIT Kerberos environments. Critical for enterprise auth.

TCP/UDP Security & VPN 常用

安全注意事项

端口464（Kerberos Change Password）被归类为严重风险。此端口不应暴露在公网上。该服务在未加密的情况下传输数据，容易受到窃听、凭据窃取和中间人攻击。

建议：在防火墙处封锁此端口。改用加密替代方案（SSH、SFTP、HTTPS）。

Kerberos Change Password

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端口概览

什么是端口 464?

安全注意事项

相关端口 — Security & VPN

相关术语