SMB Server Is Sending Simple / Anonymous LDAP Bind Requests To Windows Domain Controller
(Doc ID 2032384.1)
Last updated on FEBRUARY 03, 2019
Applies to:Solaris Operating System - Version 11.1 to 11.2 [Release 11.0]
Information in this document applies to any platform.
Error message recorded in /var/adm/messages:
smbd[PID]: [ID 649633 daemon.notice] ndr_rpc_bind[tid=8]: \\ad-server.domain\PIPE\lsarpc: Permission denied (13)
SMB Server is sending simple LDAP bind requests to Domain Controller.
SMB server is trying to anonymously bind with the Domain Controller.
The anonymous bind has a empty username and password.
Security monitoring may raise concerns about un-authenticated requests or user authentication such as passwords will be sent in clear text.
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