update nagios to support NTLMv2 response only. Refuse LM & N

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update nagios to support NTLMv2 response only. Refuse LM & N

Postby mithilaranasinghe » Tue Sep 12, 2017 5:23 am

After implementing group policy "Network security: LAN Manager authentication level" to "Send NTLMv2 responses only. Refuse LM & NTLM" in windows server nagios unable to monitor server health , it trow below error
"
UNKNOWN - The WMI query had problems. You might have your username/password wrong or the user's access level is too low. Wmic error text on the next line.
[librpc/rpc/dcerpc_util.c:1290:dcerpc_pipe_auth_recv()] Failed to bind to uuid 4d9f4ab8-7d1c-11cf-861e-0020af6e7c57 - NT_STATUS_NET_WRITE_FAULT
[librpc/rpc/dcerpc_connect.c:790:dcerpc_pipe_connect_b_recv()] failed NT status (c0000022) in dcerpc_pipe_connect_b_recv
[wmi/wmic.c:196:main()] ERROR: Login to remote object.
NTSTATUS: NT_STATUS_ACCESS_DENIED - Access denied


"
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Re: update nagios to support NTLMv2 response only. Refuse LM

Postby scottwilkerson » Tue Sep 12, 2017 8:16 am

It looks like you were monitoring your Windows servers with WMI and you changed the policy and removed access to what was required to access the server.
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Re: update nagios to support NTLMv2 response only. Refuse LM

Postby mithilaranasinghe » Thu Sep 14, 2017 10:00 am

Thank for your support, i'm able to rectify the issue , the issue was "subjected policy change force to use AD authentication when server is connect to the AD , with AD user and pass it was successful "
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