PRTG Manual: Port v2 Sensor
The Port v2 sensor monitors a network service by connecting to one or more of its TCP/IP ports.
Depending on your settings, the sensor can alert you either when the monitored port is open or when it is closed.
This sensor is in beta status. The operating methods and the available settings are still subject to change. Do not expect that all functions work properly, or that this sensor works as expected at all.
For a detailed list and descriptions of the channels that this sensor can show, see section Channel List.
- Dutch: Poort v2
- French: Port v2
- German: Port v2
- Japanese: ポート v2
- Portuguese: Porta v2
- Russian: Порт v2
- Simplified Chinese: Port v2
- Spanish: Puerto v2
Consider the following remarks and requirements for this sensor:
Remark |
Description |
---|---|
Enabled Beta Sensors experimental feature |
This sensor requires that the Beta Sensors experimental feature is enabled. For more information, see the Knowledge Base: What are beta sensors and how can I use them? |
IPv6 |
This sensor supports IPv6. |
Performance impact |
This sensor has a very low performance impact. |
Scanning interval |
This sensor has a fixed minimum scanning interval for performance reasons. You cannot use a shorter scanning interval. Consequently, shorter scanning intervals in the Monitoring settings are not available for this sensor.
|
Multi-platform probe |
You can add this sensor to a multi-platform probe. |
Known Issues
- The sensor shows the Unknown state if a sensor scan was executed during the scan of the port list. If this issue occurs, reduce the list of monitored ports or increase the Scanning Interval of the sensor. The scan of each port takes about two seconds. For example, if you monitor the ports 1-900, the sensor needs around 1,800 seconds (30 minutes) to complete the port list.
Setting |
Description |
---|---|
Goal |
Define how the sensor reports on the ports:
You can modify the limits in the channel settings to change the sensor behavior. For more information, see section Channel Settings. |
The sensor has the following default tags that are automatically predefined in the sensor's settings when you add the sensor:
- portrangesensor
- portsensor
- tcp
For more information about basic sensor settings, see section Sensor Settings.
Setting |
Description |
---|---|
Timeout (Sec.) |
Enter a timeout in seconds for the request. Enter an integer. The maximum timeout value is 900 seconds (15 minutes). If the reply takes longer than this value, the sensor cancels the request and shows a corresponding error message. |
Port-by-Port Delay (ms) |
Define how long the sensor waits before it tries to connect to the next port. The maximum delay value is 100 ms. |
Port List |
Enter the port numbers that the sensor tries to connect to. Enter one port number per line. PRTG supports the port numbers 1 - 65535. You can also specify port ranges by using A-B, for example 8080-8090. Enter an integer. |
Setting |
Description |
---|---|
Primary Channel |
Select a channel from the list to define it as the primary channel. In the device tree, PRTG displays the last value of the primary channel below the sensor's name. The available options depend on what channels are available for this sensor. You can set a different primary channel later by clicking below a channel gauge on the sensor's Overview tab. |
Graph Type |
Define how this sensor shows different channels:
|
Stack Unit |
This setting is only visible if you select Stack channels on top of each other above. Select a unit from the list. PRTG stacks all channels with this unit on top of each other. By default, you cannot exclude single channels from stacking if they use the selected unit. However, there is an advanced procedure to do so. |
Setting |
Description |
---|---|
Result Handling |
Define what PRTG does with the sensor result:
This option is not available when the sensor runs on the hosted probe of a PRTG Hosted Monitor instance. |
By default, all of these settings are inherited from objects that are higher in the hierarchy. We recommend that you change them centrally in the root group settings if necessary. To change a setting for this object only, click under the corresponding setting name to disable the inheritance and to display its options.
For more information, see section Inheritance of Settings.
Which channels the sensor actually shows might depend on the target device, the available components, and the sensor setup.
Channel |
Description |
---|---|
Closed Ports |
The number of closed ports |
Downtime |
In the channel table on the Overview tab, this channel never shows any values. PRTG uses this channel in graphs and reports to show the amount of time in which the sensor was in the Down status |
Errors |
The number of errors This channel has a default limit:
|
Maximum Connect Time |
The maximum time until a request to connect to a port was accepted This channel is the primary channel by default. |
Open Ports |
The number of open ports |
KNOWLEDGE BASE
What are beta sensors and how can I use them?
What security features does PRTG include?