PRTG makes monitoring your internet
connection both quick and easy


  • Keep a constant eye on
    your internet connection

  • Be alerted immediately if the connection goes down

  • Check to make sure your provider is honoring the terms of your SLA


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.








A stable internet connection is a must for nearly every business transaction. Glitches and slow transmission rates can have serious consequences for your business.

Is one of your internet services or web pages down, or are your emails simply stuck in your outbox? The culprit may be a blocked or interrupted internet connection.

With continuous monitoring, you'll always know if your internet connection is to blame for errors in your network.

And if your system does indeed crash, you'll see so immediately and can quickly take action to keep the potential damage to your company to a minimum. You can also check to make sure your ISP (internet Service Provider) is abiding by your SLA. 



How to monitor your internet connection via ping

Using the Ping sensor, send a ping at regular intervals to the IP addresses of services such as Google ( and Cloudflare (


If all of your monitored services are down, it probably means that you have no internet connection. In such a case, set up an SMS notification in PRTG (no internet-based notifications like push or email).

For more information about the reliability of the connection between you and a specific device or server, you can use the Ping Jitter sensor. In addition to the information about the device's reachability, the sensor will give you indicators on the reliability of lines in the form of variation in response times.


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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.”

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“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.”

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

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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.



PRTG sensors for monitoring your internet connection

There are several ways to monitor your network’s internet connection with PRTG. You can use our Ping sensor to ping the DNS-IP of large and reliable web services at regular intervals.

i Ping is a command-line utility, available on virtually any operating system with network connectivity, that acts as a test to see if a networked device is reachable. The ping command sends a request over the network to a specific device. A successful ping results in a response from the computer that was pinged back to the originating computer.
Read more

The HTTP sensor checks the load time of a website or component. It lets you check the length of time required to load specific content, and draw conclusions with regard to the performance of your internet connection.


Solving issues with your internet connection


If you have issues with your internet connection and need to know where the problem lies, you can use a series of sensors to pinpoint the location.

First, figure out all hops between you and the device you are trying to connect to using traceroute or tracert

Traceroute or tracert

1 1 ms 1 ms 1 ms *.*.*.*
2 1 ms 1 ms 1 ms *.*.*.*
3 16 ms 15 ms 13 ms []
4 19 ms 30 ms 31 ms []
5 14 ms 14 ms 16 ms []
6 23 ms 22 ms 22 ms []
7 23 ms 22 ms 21 ms []
8 * * * Request timed out.
9 * * * Request timed out.
10 49 ms 49 ms 45 ms
11 45 ms 44 ms 43 ms []
Traceroute Hop Count Sensor

Then create a device for each one of the hosts and add a Ping or a Ping Jitter sensor for each. Now, you can see which hop or which router is introducing the issues in your connection.

Take that information and call your Internet Service Provider (ISP), you will probably get a better response than "Take two aspirin’s and call me in the morning".

Using the PRTG Traceroute Hop Count sensor, you can also see if there are changes in the route itself. This would happen if there was a routing change or someone was redirecting the traffic. In that case, you would see a change in the number of hops between your device and the destination. You could use this sensor as an indicator that the ISP is having issues with the connections.


Checking the availability of your device

If your concern is more the availability of the device/host, PRTG has different sensors that can assist.

Again, the Ping sensor will let you know that the device is reachable and, in most cases, if the operating system is alive.

But there are cases where the machine may have crashed and is still responding to pings. In this age of more sophisticated peripherals, basic functionality is often off-loaded to hardware. Like ping, which is a simple standard protocol, it can be implemented in firmware on network cards.

If you have a false positive, it may be great for the normal operational efficiency, but devastating to monitoring. In order to get around this issue, you have to test the services running on the device. Like in our prior example Quad9 DNS (

Device tree

How to make sure your server is up and running

Port Range Sensor

If you want to make sure the server is up and functioning you can use the Port Range sensor to establish a connection with the service on the particular server.

If the sensor succeeds, you know a couple of things:

  • The device is reachable through the network

  • The operating system on the device is active and managing connections

  • The program that performs the service is active and ready to perform the service

  • Given the timing, you can see how busy it is

With this one sensor, you have gleamed a lot more information about the state of the device on the other end without the need for credentials of any security information.


Checking the performance of the DNS Server

You can check the performance of the DNS server by querying a record by adding the DNS sensor to the device.

Additionally to the information provided by the Port Range sensor, you now know:

  • The DNS service is doing its job of resolving DNS records
  • If you pick one of your own website DNS records, your records resolve correctly
DNS sensor

Why PRTG is the perfect monitoring tool


Simple and intuitive

PRTG is set up and configured in no time, and extremely easy to use. What’s more, an easy-to-read user interface turns daily work with PRTG into a genuinely pleasurable experience.

Automated alarms

PRTG automatically sounds the alarm if your internet connection is interrupted or another problem arises in your network. You can set your own threshold values, and be informed by SMS, email, or push notification in the event they are exceeded.


Quick troubleshooting

PRTG allows you to promptly take action in the event of a problem, such as when the internet is unreachable. It lets you stop potential errors and malfunctions in their tracks, before the company takes notice of them. Your coworkers will thank you for it!


PRTG keeps an eye on everything



PRTG in a nutshell

PRTG monitors your entire IT infrastructure

Traffic, packets, applications, bandwidth, cloud services, databases, virtual environments, uptime, ports, IPs, hardware, security, web services, disk usage, physical environments, IoT devices and almost everything you can imagine.

PRTG supports most technologies

SNMP (all versions), Flow technologies (i.e. NetFlow, jFlow, sFlow), SSH, WMI, Ping, and SQL. Powerful API (Python, EXE, DLL, PowerShell, VB, Batch Scripting, REST) to integrate everything else. See all PRTG features

PRTG is ready for every platform

Download for Windows and hosted version
available. Monitoring via AJAX Web Interface or Desktop Client.



German quality

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



Administrators must compare monitoring tools or search for a free one. There are several suppliers on the market.

PRTG comes with a full range of advantages:

1. Free trial version: PRTG is available in a free trial version. Use this version to get a feel for our network monitoring tool with no risk whatsoever.

2. Over 300,000 administrators: whether in large or small businesses, authorities, colleges or administrations - all around the world, more than 300,000 administrators put their trust in our network monitoring tool, and can therefore also monitor their bandwidth. Read our case studies here.

3. Support: do you have a question? We respond in a jiffy! You can already access a great deal of information online by consulting our FAQs, manuals, videos, webcasts, or knowledge base. You can of course also send us a message. We'll do our best to get back to you within 24 hours on business days.

PRTG – your network monitoring tool

PRTG is the Paessler AG all-in-one network monitoring tool. Our software is used by more than 300,000 administrators worldwide, whether it be to monitor their hardware- and server performance , their virtual environments, or the accessibility of their websites. Use PRTG for database monitoring or SQL monitoring.  PRTG is a one fits all network analyzer tool.

Save time, worry, and money. PRTG is configured in a matter of minutes. The trial version is offered free of charge. And you can upgrade whenever you like.



Network Monitoring Software - Version (September 15th, 2020)


Download for Windows and hosted version available


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Up to 100 sensors for free (Price List)

Unified Monitoring

Network devices, bandwidth, servers, applications, virtual environments, remote systems, IoT, and more

Supported Vendors & Applications


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