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dns ldap kerberos
About this tag
This tag covers discussions about the interplay between DNS, LDAP, and Kerberos in Windows Active Directory environments. Recent content highlights how Microsoft's 2025 Netlogon hardening updates, which affect Kerberos authentication and LDAP-based domain controller communication, can impact compatibility with third-party services like Samba. Topics include security patches, RPC protocol changes, and troubleshooting authentication issues in mixed-OS networks. The tag is relevant for IT administrators managing domain controllers, DNS resolution, and LDAP queries in enterprise settings.
Microsoft has quietly but decisively reworked how Active Directory domain controllers answer certain Netlogon RPC calls — a change rolled into the July and August 2025 cumulative updates that hardens the Microsoft RPC Netlogon protocol, closes an unauthenticated resource‑exhaustion vector...
active directory
cifs
compatibility
cve-2025-49716
dc outages
dnsldapkerberos
idmap ad
netlogon
network segmentation
patch management
rpc netlogon
samba
security hardening
vendor advisories
windows server
windows server 2022