> For the complete documentation index, see [llms.txt](https://docs.enginsight.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.enginsight.com/docs/manual/english/platform-usage/observations/health-checks/port-monitoring.md).

# Port Monitoring

Monitoring with port checks allows you to verify the availability of domains and network devices on which Pulsar cannot be installed by checking whether specific ports are reachable.

{% hint style="danger" %}
**Please note**: To monitor ports on target systems, you must [install the Watchdog](/docs/manual/english/installation-and-configuration/installation-and-configuration/enginsight-components/watchdog.md#install-watchdog) component in the subnet in which the respective device is located or through which the respective domain can be reached.
{% endhint %}

***

<i class="fa-compass">:compass:</i> Navigate to **Observations** → **Port Monitoring** to display a list of all configured port checks. If you have not created a port check yet, this view is empty.

Among other things, the [Port Monitoring Overview](#port-monitoring-overview) shows:

* whether specific ports on a target system are reachable.
* which network device and IP address or which domain is being monitored.
* when the reachability of the specified ports was last checked.
* which Watchdog is responsible for port monitoring.

You can also [add new port checks](#add-port-check).

***

## Navigation

<i class="fa-computer-mouse">:computer-mouse:</i> Click the **Search** field above the list to expand the filter menu.

<details>

<summary>Available Filters</summary>

<table><thead><tr><th width="199.859375">Parameter</th><th>Description</th></tr></thead><tbody><tr><td>Tags</td><td>Filter for all port checks with a specific tag. All available tags are displayed.</td></tr></tbody></table>

</details>

<i class="fa-computer-mouse">:computer-mouse:</i> Use the page navigation controls  to switch between multiple pages.

### Further Actions for List Items

The following actions are available for each list item:

<table><thead><tr><th width="200.30859375">Action</th><th>Description</th></tr></thead><tbody><tr><td>Edit</td><td><i class="fa-computer-mouse">:computer-mouse:</i> Click the <strong>Edit</strong> icon <i class="fa-pencil">:pencil:</i> to open the edit view of the respective object.</td></tr><tr><td>Delete</td><td><p><i class="fa-computer-mouse">:computer-mouse:</i> Click the <strong>Delete</strong> icon <i class="fa-trash">:trash:</i>, then confirm the prompt that appears to delete the object.</p><div data-gb-custom-block data-tag="hint" data-style="danger" class="hint hint-danger"><p><strong>Please note:</strong> Deleted objects cannot be recovered.</p></div></td></tr></tbody></table>

***

## Port Monitoring: Overview

The Port Monitoring Overview is displayed as a table. It provides the following information:

<table><thead><tr><th width="200.03125">Column</th><th>Description</th></tr></thead><tbody><tr><td>Status</td><td><p>Displays the reachability of the monitored ports as a colored <strong>Signal</strong> icon <i class="fa-wifi">:wifi:</i>.<br><br>The following colors may be displayed:</p><ul><li><strong>Green</strong>: All specified ports are reachable.</li><li><strong>Red</strong>: At least one specified port is not reachable.</li></ul></td></tr><tr><td>Name</td><td>Displays the IP address of the monitored network device or the name of the monitored domain and an additional description, if available. It also displays the tags assigned to the port check and the creation date and time and the date and time of the most recent change.<br><br><i class="fa-computer-mouse">:computer-mouse:</i> Click an IP address or domain name to navigate to the corresponding <a href="/docs/manual/english/platform-usage/observations/health-checks/port-monitoring/port-monitoring-detail-view.md">Port Monitoring detail view</a>.</td></tr><tr><td>Port Details</td><td>Displays the port number and transport protocol used by the monitored ports.</td></tr><tr><td>Last Check</td><td>Displays the date and time when the specified ports were last checked.</td></tr><tr><td>Watchdog</td><td>Displays the name of the Watchdog responsible for monitoring the corresponding target system.</td></tr></tbody></table>

***

## Adding a Port Check

<i class="fa-computer-mouse">:computer-mouse:</i> Click <i class="fa-plus">:plus:</i> **Add Port Check** in the upper-right corner to [create a new port check](/docs/manual/english/platform-usage/observations/health-checks/port-monitoring/add-port-check.md).

***

## Port Monitoring: Edit View

<i class="fa-computer-mouse">:computer-mouse:</i> Click the **Edit** icon <i class="fa-pencil">:pencil:</i> to navigate to the corresponding edit view. Here, you can [adjust the configured settings](/docs/manual/english/platform-usage/observations/health-checks/port-monitoring/add-port-check.md#settings) and delete the port check.

The following actions are available:

<table><thead><tr><th width="199.76171875">Option</th><th>Description</th></tr></thead><tbody><tr><td>Save Changes</td><td><p><i class="fa-computer-mouse">:computer-mouse:</i> Click <strong>Save Changes</strong> after modifying any settings.</p><div data-gb-custom-block data-tag="hint" data-style="danger" class="hint hint-danger"><p><strong>Please note</strong>: Unsaved changes cannot be recovered.</p></div></td></tr><tr><td>Delete</td><td><p><i class="fa-computer-mouse">:computer-mouse:</i> Click <strong>Delete</strong> and confirm the message that appears by clicking <strong>Delete</strong> to delete all configured settings.</p><div data-gb-custom-block data-tag="hint" data-style="danger" class="hint hint-danger"><p><strong>Please note</strong>: Deleted settings cannot be recovered.</p></div></td></tr></tbody></table>

***