Is port 750 (Kerberos v4) dangerous?

Port 750 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 750 be open on my firewall?

No, port 750 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 750 use?

Port 750 (Kerberos v4) uses the UDP transport protocol and falls under the Security & VPN category.

:750 (UDP)

Kerberos v4

Critical Riesgo

UDP — Security & VPN

Resumen del puerto

Número de puerto 750

Nombre del servicio Kerberos v4

Protocolo de transporte UDP

Categoría Security & VPN

Riesgo de seguridad Critical

Rango de puertos Conocidos (0-1023)

Qué es el puerto 750?

Kerberos version 4 authentication service. Has known cryptographic weaknesses including DES-only encryption. Superseded by Kerberos v5 on port 88. Should be disabled.

UDP Security & VPN

Consideraciones de seguridad

El puerto 750 (Kerberos v4) está clasificado como riesgo crítico. Este puerto no debe exponerse a internet público. El servicio transmite datos sin cifrado, haciéndolo vulnerable a escuchas, robo de credenciales y ataques de intermediario.

Recomendación: Bloquea este puerto en el firewall. Utiliza alternativas cifradas (SSH, SFTP, HTTPS) en su lugar.

Puertos relacionados — Security & VPN

31 MSG-AUTH 48 Auditd 49 TACACS 56 XNS-AUTH 62 ACA Services 65 TACACS-DS 88 Kerberos 90 DNSIX Security

Términos relacionados

SSL/TLS Certificate DDoS DNS Spoofing Encryption Firewall HTTPS