{"id":4758,"date":"2023-04-19T06:38:17","date_gmt":"2023-04-19T12:38:17","guid":{"rendered":"https:\/\/www.supportpro.com\/blog\/?p=4758"},"modified":"2026-03-30T03:10:05","modified_gmt":"2026-03-30T09:10:05","slug":"monitor-a-windows-service-host-from-the-nagios-core-server-linux","status":"publish","type":"post","link":"https:\/\/www.supportpro.com\/blog\/monitor-a-windows-service-host-from-the-nagios-core-server-linux\/","title":{"rendered":"Monitor a Windows service\/host from the Nagios Core server [Linux]"},"content":{"rendered":"\t\t
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NSclient++ is an agent which can be used to monitor Windows devices. Using this agent we can monitor system metrics, services, and processes on the target machine using the Windows Server configuration Wizard. This agent must be installed on the target Windows Machine\/Server. In this scenario, Nagios core is installed on a CentOS machine.<\/p>\n\n\n\n

Part A<\/i><\/b><\/h2>\n\n\n
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Please follow the steps below to install the agent.<\/p>\n\n\n\n

Windows Monitoring Agent installation: NSClient++<\/p>\n\n\n\n

Log on to the Windows target server and download the latest version of NSClient++ software as per the system Architecture.<\/p>\n\n\n\n

Link for download: <\/i>https:\/\/nsclient.org\/download\/<\/i><\/p>\n\n\n

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Step 1 : Once downloaded the package. Double click on the installer. You will see a setup wizard like below and click on Next button to proceed with the installation. See the below image.<\/p>\n\n\n\n

Step 2: On the next screen, go ahead and select \u2018Generic\u2019 and Click on \u2018Next\u2019 button. See the below image.<\/p>\n\n\n

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Step 3: Click on \u2018Complete\u2019 as shown below. This will cover all program features at the time of installation.<\/p>\n\n\n

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Step 4: Here you will need to put the Nagios Core Server IP address in \u2018 Allowed_hosts<\/b>\u2019 and choose a random password. We are going to monitor the Win service using the check_nt<\/b> module. So go ahead and enable modules which are shown in the below image and click on \u2018Next\u2019 button.<\/p>\n\n\n

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Step 5: Click on the \u2018install\u2019 button to complete the installation.<\/p>\n\n\n

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Configuring NSClient++ 0.5.x<\/b><\/h3>\n\n\n\n

The configuration file in NSClient++ 0.5.x is called nsclient.ini and is located at: C:\\Program Files\\NSClient++\\nsclient.ini<\/p>\n\n\n

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The configuration file should look like this. You will need to open the file using notepad++ or with a normal text editor. Here we can see the allowed_host and password that was given at the time of installation. See the configuration file.<\/p>\n\n\n

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You will need to enable all the features that are shown as disabled.<\/p>\n\n\n\n

We will need to restart the NSClient++ service whenever we make changes in it. So you can restart the NSclient++ from the \u2018Service console under Administrative Tools. See the image below.<\/p>\n\n\n

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Open Port in Firewall<\/b><\/h3>\n\n\n\n

Make sure the following port that need to be open can be accessed from the Nagios XI server:<\/p>\n\n\n\n