rpc netlogon

The rpc netlogon tag covers discussions about the Netlogon Remote Procedure Call protocol, particularly its role in Active Directory domain controller security. Recent content focuses on Microsoft's hardening changes in 2025 cumulative updates, which modify how domain controllers handle Netlogon RPC calls to close vulnerabilities like CVE-2025-49716, an unauthenticated resource-exhaustion vector. These updates improve security but can cause compatibility issues with third-party services such as Samba. Topics include the impact on AD DC environments, troubleshooting authentication failures, and balancing security with interoperability. The tag is relevant for IT administrators managing Windows domain networks and those integrating non-Microsoft file and print services.