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 Risiko

UDP — Security & VPN

Ikhtisar Port

Nomor Port 750

Nama Layanan Kerberos v4

Protokol Transport UDP

Kategori Security & VPN

Risiko Keamanan Critical

Rentang Port Well-Known (0-1023)

Apa itu Port 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 Superseded by Kerberos v5 on port 88.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

Pertimbangan Keamanan

Port 750 (Kerberos v4) diklasifikasikan sebagai risiko kritis. Port ini tidak boleh diekspos ke internet publik. Layanan ini mentransmisikan data tanpa enkripsi, sehingga rentan terhadap penyadapan, pencurian kredensial, dan serangan man-in-the-middle.

Rekomendasi: Blokir port ini di firewall. Gunakan alternatif terenkripsi (SSH, SFTP, HTTPS) sebagai gantinya.

Port Terkait — Security & VPN

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

Istilah Terkait

SSL/TLS Certificate DDoS DNS Spoofing Encryption Firewall HTTPS