UDP 137: Used for NetBIOS name resolution. UDP 138: Used by the NetBIOS Datagram Service. UDP and TCP 389: Used by LDAP with per-user Client Access Licenses (CALs) in AD. From a proxy standpoint, the ...

Here's what those enrolled in the Windows 10 Extended Security Updates program need to know about each monthly security update. Now updated for KB5075912, released on Feb. 10, 2026. Windows 10 has ...