# Associating URL Monitors to Desktop, Servers and Domain Controllers Given how business-critical your websites are, it is of utmost importance to monitor the availability of the URLs. With OpManager, you can monitor their URL availability by performing a content match. Furthermore, you can also check the availability of authenticated pages, by providing the respective credentials. You can add URL monitors to Desktop/Servers/Domain Controllers to check the availability of local URLs. To add a URL monitor to a specific device, follow the below steps. 1. Navigate to **Inventory -> Devices** and then click on a device to open its snapshot page. ![Associating URL monitors from device snapshot page: Devices inventory page](https://www.manageengine.com/network-monitoring/help/images/associating-url-from-snapshot.png) 2. Click **Monitors → URL Monitors**. 3. Click the **Actions** button and select **'Add monitor'.** 4. [Configure all the values](https://www.manageengine.com/network-monitoring/help/monitor-url.html) for the URL Monitor, and then click on **'Save'**. The configured URL is monitored for availability. You can configure to receive an e-mail or SMS when the URL monitored in a device goes down. For this, you can [create a notification profile](https://www.manageengine.com/network-monitoring/help/configuring-notifications.html) for the 'URL is down' criteria and associate it to the devices.