FTP monitoring with PRTG


  • PRTG effectively monitors the performance of FTP servers

  • PRTG monitors via encrypted and unencrypted server connections


  • Count files, measure response time, report problems

Free Download

Unlimited version of PRTG for 30 days. After 30 days, PRTG reverts to a free version.
Or, you can upgrade to a paid license anytime.






Check your FTP server for problems or changes


 i What is a sensor?

In PRTG, “sensors” are the basic monitoring elements. One sensor usually monitors one measured value in your network, e.g. the traffic of a switch port, the CPU load of a server, the free space of a disk drive. On average you need about 5-10 sensors per device or one sensor per switch port.

View video (3:26 min.)

The FTP server: Your download center

The FTP server: Your download center

As download centers, FTP servers provide customers and coworkers with data, applications, drivers, and software updates. The functioning of these servers therefore has a direct impact on customer satisfaction. If downloads are consistently slow, then the latter is bound to suffer. Furthermore, service-level agreements must be upheld to avoid contractual penalties in the B2B realm.

FTP servers: Data distribution centers

FTP servers: Data distribution centers

FTP servers act as in-house data distribution centers. They ensure information, software, and updates are distributed to the individual workstations of your company. This distribution affects work processes, and is especially vital for closing security loopholes quickly. Customers want to be able to easily upload project documentation, employees need to exchange data without interruptions, and perhaps most importantly, system administrators must be informed of changes to servers and keep an eye on crucial server values such as response time.

PRTG comes with FTP sensors

PRTG comes with FTP sensors

Professional FTP monitoring is required to effectively (and reliably) complete all these tasks. PRTG offers pre-configured sensors for FTP, FTPS, and SFTP servers. PRTG monitoring prevents downtime, speeds up troubleshooting, records changes to the current file count, and immediately notifies you of performance problems, such as when a server’s response time slows down. FTP-based services should be quickly and easily accessible at all times, and the distribution of data and applications must be carried out without interruption. Use PRTG to ensure everything runs smoothly.

With PRTG, everyone will work with peace of mind.


An introduction to FTP monitoring with PRTG


How FTP monitoring with PRTG works


Pre-configured sensors

Pre-configured sensors

PRTG comes equipped with three sensors for FTP and SFTP monitoring. These sensors query response times, server messages, and the current file count, and prepare this information for the PRTG dashboard and reports. Other sensors can be customized according to your own specific needs. In the event of a problem, PRTG will automatically send out an alarm notification.



A username and password are saved in the sensor settings to allow the sensor to connect to the server. You can customize a variety of other parameters in these settings, including whether you would like PRTG to use SSL or TLS encryption to connect to the FTP server. When counting the number of files, you can specify whether all files should be included in the count, or only those which have been added since the last query. With PRTG, you can even customize query intervals.

PRTG uses the SSH File Transfer Protocol (“FTP over SSH”) to connect to the SFTP servers of Linux systems. This allows you to keep a constant eye on the response times of your SFTP servers.

Learn more about monitoring with SSH here

Learn how to set up an SSH sensor here


Free Download

Unlimited version of PRTG for 30 days. After 30 days, PRTG reverts to a free version.
Or, you can upgrade to a paid license anytime.



4 good reasons to choose PRTG as your FTP monitoring tool

Stable and secure

Stable and secure

With FTP monitoring, FTP and SFTP servers are more stable during uploads and downloads, data receives greater protection, and unwanted deletions or unusual spikes in the file count are recorded. As a result, your work processes and customer service department will run without a hitch.

Gain an overview

Gain an overview

All FTP and SFTP server values are displayed on an easy-to-read dashboard. PRTG also comes with automated reporting. You can customize the dashboard, as well as the alarm and reporting features.

Automated alarms

Automated alarms

PRTG will automatically send you an alert as soon as FTP or SFTP server availability becomes an issue. It will also warn you if files are added or deleted, or if any other personalized threshold values are exceeded. PRTG delivers these alarms by SMS, email, or push notification.

Measure performance

Measure performance

Generate FTP server statistics on performance, availability, response times, and file counts. Graphs of the data are created directly in the application, or via a report, which you can also have sent automatically.


itpro review

“Businesses that want to monitor everything on their network without having to worry about extra costs or unsupported devices will find Paessler’s PRTG Network Monitor a fine choice. It dishes out sensors a bit more liberally than you’ll probably want, but these can be easily moved to where they’re needed, resulting in a monitoring solution that’s not only highly capable but good value.”

To the review


Keep a constant eye on your network
– even while on the go

PRTG can be started within minutes and it's compatible with many mobile devices.


PRTG comes with all the features you need, plus more your IT infrastructure won't want to live without.


PRTG monitors these vendors and applications, and more, in one view!



“The support we received from Paessler AG was extremely reassuring. Their reaction time, know-how, and solutions were outstanding in every department.”

Andreas Reimann, Senior Networking Communication Architect at Zürich Airport. Zürich Airport uses more than 4,500 sensors for its monitoring


Trusted by 500,000 users
and recognized by industry analysts as a leader


“Fantastic network and infrastructure monitoring solution that is easy to deploy and easier still to use. Simply the best available.”

Read more reviews

“Software is absolutely perfect, Support is superior. Meets all needs and requirements, This is a must have solution if you are needing any form of monitoring.”

Read more reviews

“The tool excels at its primary focus of being a unified infrastructure management and network monitoring service.”

Read more reviews


Free Download

Unlimited version of PRTG for 30 days. After 30 days, PRTG reverts to a free version.
Or, you can upgrade to a paid license anytime.


Data collected by PRTG

FTP Sensor

FTP sensor

The FTP ensor monitors files servers that use the File Transfer Protocol (FTP) or FTP over SSL (FTPS). Display the following:

  • Server response time
  • Server response


FTP Server File Count Sensor

FTP Server File Count sensor

The FTP Server File Count sensor connects to a File Transfer Protocol (FTP) server and monitors changes to files. It can display the file count of a selected directory.

 SFTP Secure File Transfer Protocol Sensor

SFTP Secure File Transfer Protocol sensor

The SFTP Secure File Transfer Protocol sensor monitors the FTP servers of a Linux-/Unix system which use the SSH File Transfer Protocol (FTP over SSH). This sensor attempts to connect to the server, and displays the corresponding response time.


PRTG is a vital tool for getting
your IT into tip-top shape!

The costs for a one-year PRTG license pay for themselves in an average of only a few of weeks.
License costs vary according to the size of your network.

PRTG makes
your network more reliable

PRTG improves the reliability of your network

PRTG saves
network management costs

PRTG saves network management costs

PRTG saves time
spent on network management


Free Download

Unlimited version of PRTG for 30 days. After 30 days, PRTG reverts to a free version.
Or, you can upgrade to a paid license anytime.




Also interesting:

NTP Monitoring:
The NTP Sensor continuously compares the times of your network devices with the times of a precise NTP server. This allows all network log files to be compared with one another.

Website monitoring: Is your website always available? Is your web server running? Are all its key processes operational? Are its load times increasing? Via the PRTG Cloud, you can monitor the worldwide availability of your website with the HTTP and Cloud HTTP v2 sensors. The same goes for your servers and entire IT infrastructure.

Ping Monitoring: PRTG uses ping to check the availability of all your network devices. If the ping fails, you will be notified immediately.

PRTG monitors the quality of your VoIP-connections. By preventing malfunctions and verifying service level agreements, you’ll save time and money. 


Over 95% of our customers recommend PRTG


Paessler AG worldwide trialled PRTG in over 600 IT departments.
The aim was to tune the network monitoring software closer to the needs of the administrators.
The result of the survey: over 95% of the participants would recommend PRTG - or already had.

Recommend PRTG


PRTG The Swiss Army knife

PRTG: The Swiss Army knife for sysadmins

Adapt PRTG individually and dynamically to your needs relying on a strong API:

  • HTTP API: Access monitoring data and manipulate monitoring objects using HTTP requests
  • Custom Sensors: Create your own sensors for customized monitoring
  • Custom Notifications: Create your own notifications to send alarms to external systems
  • REST Custom Sensor: Monitor almost everything that provides XML or JSON


Still not convinced?



More than 500,000 sysadmins love PRTG

PRTG is used by companies of all sizes. Sysadmins love PRTG because it makes their job a whole lot easier.

Still not convinced?


Monitor your entire IT infrastructure

Bandwidth, servers, virtual environments, websites, VoIP services – PRTG keeps an eye on your entire network.




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Try PRTG for free

Everyone has different monitoring needs. That’s why we let you try PRTG for free. Start now with your 30-day trial.




Network Monitoring Software - Version (September 21st, 2021)


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