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NTLM V1 Being Diabled
Posted: Tue May 14, 2019 10:02 am
by Nickjames2006
Hi,
First Time poster so be kind.
Our I.T network guys are going to disable NTLM V1 authentication and only allow NTLM v2. Can I ask will this stop Nagios authenticating against servers that it monitors using Windows WMI? or will I have to change anything with configs?
Thanks
Nick James
Re: NTLM V1 Being Diabled
Posted: Wed May 15, 2019 2:09 pm
by benjaminsmith
Hi Nick,
What plugins are you using for WMI monitoring? Are you using the WMI wizard? The check_wmi_plus plugin used by the wizard has an option to force NTLMv2, and it maybe necessary to enable that.
See:
Nagios XI WMI Troubleshooting
Re: NTLM V1 Being Diabled
Posted: Fri May 17, 2019 5:38 am
by Nickjames2006
Hi Benjamin,
I have all 100+ servers monitored using the windows WMI Wizard
I'm taking it that I need to edit the check_wmi_plus.pl file to force this option. But it seems to be in 2 - 3 places i have attached my file if you could let me know where to change that would be most helpful
Re: NTLM V1 Being Diabled
Posted: Fri May 17, 2019 3:04 pm
by benjaminsmith
Hi Nick,
There's a separate configuration file for the plugin in the same directory called
check_wmi_plus.conf. You'll want to edit line 85 of that file (best to make backup of the file before making changes).
Follow the steps in the WMI Troubleshooting Guide under
Force NTLMv2:
https://support.nagios.com/kb/article/n ... g-579.html