Should port 749 be open on my firewall?

Port 749 should only be open with strict firewall rules whitelisting trusted IP addresses. Enable rate limiting and intrusion detection systems.

What transport protocol does port 749 use?

Port 749 (Kerberos Admin) uses the TCP/UDP transport protocol and falls under the Security & VPN category.

:749 (TCP/UDP)

Kerberos Admin

Q: Is port 749 (Kerberos Admin) dangerous?

Port 749 is classified as high risk. It is a common target for automated scanning and brute-force attacks. Restrict access to trusted IPs if exposure is necessary.

High Risk

TCP/UDP — Security & VPN

Port Overview

Port Number 749

Service Name Kerberos Admin

Transport Protocol TCP/UDP

Category Security & VPN

Security Risk High

Port Range Well-Known (0-1023)

What is Port 749?

Kerberos 5 administration server (kadmin), used to remotely administer the KDC including adding, modifying, and deleting principals. Exposure outside the administrative network is a significant security risk.

TCP/UDP Security & VPN Commonly Used

Security Considerations

Port 749 (Kerberos Admin) is classified as high risk. This port is a common target for automated scanning and brute-force attacks. If you must expose it, restrict access to known IP addresses.

Recommendation: Use firewall rules to whitelist trusted IPs. Enable rate limiting and intrusion detection.

Related Ports — Security & VPN

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

Related Terms

SSL/TLS Certificate DDoS DNS Spoofing Encryption Firewall HTTPS