<%NUMBERING1%>.<%NUMBERING2%>.<%NUMBERING3%> PRTG Manual: FTP Sensor

Sensor Name

Enter a name to identify the sensor.

Parent Tags

Shows tags that the sensor inherits from its parent device, parent group, and parent probe.

This setting is for your information only. You cannot change it.

Tags

Enter one or more tags. Confirm each tag with the Spacebar key, a comma, or the Enter key. You can use tags to group objects and use tag-filtered views later on. Tags are not case-sensitive. Tags are automatically inherited.

It is not possible to enter tags with a leading plus (+) or minus (-) sign, nor tags with parentheses (()) or angle brackets (<>).

For performance reasons, it can take some minutes until you can filter for new tags that you added.

The sensor has the following default tags that are automatically predefined in the sensor's settings when you add the sensor:

• ftpsensor

Priority

Select a priority for the sensor. This setting determines the position of the sensor in lists. The highest priority is at the top of a list. Choose from the lowest priority () to the highest priority ().

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

Enter the number of the FTP port that the sensor tries to connect to. Enter an integer.

We recommend that you use the default value.

If the connection is unsuccessful, try a different port number.

FTP Mode

Define the FTP connection mode that the sensor uses for the connection to the FTP server:

• Active mode: If you cannot establish a connection, use the passive mode.
• Passive mode (default)

We recommend that you use the default value.

Transport-Level Security

Specify if the sensor uses connection security:

• Use transport-level security if available: The sensor tries to connect via Secure Sockets Layer (SSL)/Transport Layer Security (TLS). It automatically determines whether to connect via the explicit mode or the implicit mode. If the server does not support SSL/TLS, the sensor tries to connect without connection security and shows the Up status if this works.
• Enforce transport-level security: The connection must be established via SSL/TLS (in the explicit mode or the implicit mode). Otherwise, the sensor shows the Down status.
• Do not use transport-level security: The sensor connects to the FTP server without connection security.

See the sensor logs to see which method the sensor previously used to connect to the FTP server.

User Name

Enter a user name for the FTP login. Enter a string or leave the field empty.

The default user name is anonymous. If the sensor cannot log on to the FTP server with this user name (or a different user name that you define), the sensor message shows that the credentials are incorrect but the sensor remains in the Up status.

Password

Enter a password for the FTP login. Enter a string or leave the field empty.

If the sensor cannot log on to the FTP server with this password, the sensor message shows that the credentials are incorrect but the sensor remains in the Up status.

Result Handling

Define what PRTG does with the sensor result:

• Discard result: Do not store the sensor result.

• Store result: Store the last sensor result in the \Logs\sensors subfolder of the PRTG data directory on the probe system. The file names are Result of Sensor [ID].txt and Result of Sensor [ID].Data.txt. This setting is for debugging purposes. PRTG overwrites these files with each scanning interval.

This option is not available when the sensor runs on the hosted probe of a PRTG Hosted Monitor instance.

In a cluster, PRTG stores the result in the PRTG data directory of the master node.

Primary Channel

Select a channel from the list to define it as the primary channel. In the device tree, the last value of the primary channel is always displayed 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 different channels are shown for this sensor:

• Show channels independently (default): Show a graph for each channel.
• Stack channels on top of each other: Stack channels on top of each other to create a multi-channel graph. This generates a graph that visualizes the different components of your total traffic.
  You cannot use this option in combination with manual Vertical Axis Scaling (available in the channel settings).

Stack Unit

This setting is only visible if you enable Stack channels on top of each other as Graph Type. Select a unit from the list. All channels with this unit are stacked 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.

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 in percent.

Response Time

The response time in msec

This channel is the primary channel by default.