Is port 3269 (Microsoft Global Catalog SSL) dangerous?

Port 3269 is classified as medium risk. It is commonly exposed but consider using encrypted alternatives where available and monitor activity.

Should port 3269 be open on my firewall?

Port 3269 can be open but should be monitored closely. Keep the service updated and prefer encrypted alternatives where available.

What transport protocol does port 3269 use?

Port 3269 (Microsoft Global Catalog SSL) uses the TCP transport protocol and falls under the Security & VPN category.

:3269 (TCP)

Microsoft Global Catalog SSL

Medium Risk

TCP — Security & VPN

Port Overview

Port Number 3269

Service Name Microsoft Global Catalog SSL

Transport Protocol TCP

Category Security & VPN

Security Risk Medium

Port Range Registered (1024-49151)

What is Port 3269?

Port 3269 is the SSL/TLS-encrypted version of the Microsoft Active Directory Global Catalog service on port 3268. It provides secure LDAP queries across domain boundaries using certificate-based encryption. This port is preferred over 3268 when security policies require encrypted directory queries.

TCP Security & VPN

Security Considerations

Port 3269 (Microsoft Global Catalog SSL) is classified as medium risk. While this service is commonly exposed, consider using encrypted alternatives where available.

Recommendation: Keep the service updated. Monitor logs for unusual activity.

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