WAN monitoring with PRTG:
A hub for distributed networks

  • Centralized monitoring
  • Agentless software
  • Alarm feature included
  • Customizable

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

Two main PRTG components for
successful WAN monitoring

Local probe for your hub

Install PRTG in the environment which is primarily used to manage your IT infrastructure. Once the PRTG server has been installed, a local probe will automatically be created on the same computer. This local probe performs the monitoring and transfers data to the underlying core server.

Remote probe for your WAN

Install a remote probe on a computer in another location. This remote probe will monitor the network in that location and send data back to the PRTG core server. The installation takes a few short minutes.


How WAN monitoring works

Simple local networks to those spanning the globe: 3 best practices


iWhat 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.)



Many colleges, cities, and public utilities have distributed infrastructures that are confined to a specific area. One such example is Stadtwerke Frankenthal in southern Germany, which is responsible for the region’s waterworks and swimming pools. PRTG is used to monitor this organization’s 80 servers and 200 devices. ➔ To the case study [German]



Many companies have locations around the world, which they wish to monitor with a single WAN monitor tool. One such company is Pepe Jeans, whose IT department uses more than 6,000 PRTG sensors to monitor its LAN – as well as its WAN in over 350 locations worldwide. ➔ To the case study

IT service providers

IT service providers

Even IT service providers use PRTG. Example: managed service providers (MSPs), who monitor customer networks remotely and are responsible, among other things, for VoIP, network security, and other technical support. Many MSPs use PRTG for their monitoring ➔ More information for MSPs

Why WAN monitoring makes sense

Maximize availability

Maximize availability

Distributed networks are infamous for crashing. When crashes occur, all work at the respective location comes to a halt. WAN monitoring software lets you keep a constant eye on all your networks. You'll therefore maximize the uptime and availability of your entire IT infrastructure, and ensure your company works with the utmost efficiency.

Save time, energy, and money

Save time, energy, and money

When the network is down or malfunctioning, it doesn’t take long before the first help tickets start piling in. Most administrators access the computers and systems of a location remotely. But sometimes it’s not that easy. Certain problems make it necessary for sysadmins to travel to the location, which can cost a great deal of time and money. This expense can be reduced with WAN monitoring tools. 

Take prompt action

Take prompt action

Most problems start small. Let’s look at hardware: it’s quite common for routers or switches to fail for short periods of time. But these malfunctions accumulate – until the network crashes entirely. With PRTG, you'll recognize the very first signs of errors or disruptions and can take action at once. At the same time, you can configure the alarm feature to ensure you are not notified for every little disturbance.

“We can all work with greater peace of mind knowing that our systems are constantly
being monitored.”

Markus Puke, Network Administrator, Schüchtermann Klinik, Germany

Why PRTG is the perfect WAN monitoring tool

A hub for your WAN

A hub for your WAN

PRTG is a centralized WAN monitoring tool for your entire IT infrastructure. It monitors systems, devices, bandwidth, and applications. All information is consolidated on an easy-to-read dashboard. You can therefore keep a constant eye on your network.

Agentless WAN monitoring

Agentless WAN monitoring

PRTG is agentless WAN monitoring software. You don’t have to install any software on your target computers. Simply install a remote probe on a computer in one of your distributed networks. This remote probe will collect your data and send it to the core server upon which PRTG is installed.



PRTG WAN monitoring is fully customizable. You get to decide which – and to what extent – hardware and applications in your wide area network get monitored. PRTG licenses can be upgraded at any time. This means you won’t have to set up your monitoring all over again.


iLPWA stands for Low-Power Wide-Area. It does not refer to any one specific technology, but rather serves as a generic term for any network designed to communicate wirelessly with lower power than other networks such as cellular, satellite, or WiFi. Moreover, LPWANs communicate over greater distances than other low-power networks that use Bluetooth or NFC, for example.
Read more


PRTG provides for a reliable WAN connection

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!


Monitoring WAN traffic and devices: Some sensors for immediate results

SNMP sensors

SNMP sensors allow you to monitor all your hardware, including servers, routers, and switches. PRTG comes with a variety of preconfigured SNMP sensors designed for several different manufacturers.

More on SNMP monitoring



Packet Sniffer Sensor

The Packet Sniffer Sensor lets you monitor data packets and filter according to IP addresses, protocols, and types of data.

More on packet sniffing



NetFlow sensors

PRTG NetFlow sensors let you monitor your bandwidth and traffic. The NetFlow protocol is mainly used on Cisco devices. PRTG is also compatible with other Flow technologies.

More on NetFlow monitoring



Traceroute Hop Count Sensor for your WAN

How many hops does a data packet need to reach its destination? This is especially valuable information when dealing with wide area networks – for if data packets take “detours,” then delays are bound to arise. The Traceroute Hop Count Sensor lets you monitor these "hops.”





Check out over 200 preconfigured sensors which are available for immediate use. With PRTG, you can even create your own custom sensors.

Trusted by 300.000 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

  • 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

3 easy steps for installing a remote probe

Set up your PRTG core server

Set up your PRTG core server

To configure your probe connections, first click on “Core & Probes” in “System Administration.” Then set the PRTG server to allow remote probe connections.

Install the remote probe

Install the remote probe

Search for the “Remote Probe Installer” in Setup | Download and Tools. Download the installer on a computer in the part of your WAN where you wish to set up your monitoring, then run the program. The remote probe automatically connects to the PRTG server once you have confirmed the connection in PRTG. Be sure the firewall isn’t blocking the remote probe. The default port number is 23560.

Start monitoring

Start monitoring

Finally, set up your monitoring in the location housing the remote probe. You will find the remote probes in your device tree. You can now create the devices from the target network and add the necessary sensors.

Additional information

Additional information

A comprehensive description (including screenshots) can be found in the PRTG manual. We also offer helpful tips in our knowledge base, such as how to use multiple remote probes.

FAQ: Four questions on WAN availability


How can I improve VoIP in the WAN?

Bad VoIP connections are usually a sign of insufficient bandwidth. If bandwidth is too low, the network can become overloaded by certain applications or programs. PRTG lets you identify the applications and data that are putting the greatest strain on your network. You can subsequently make a sound decision on the best way to improve your VoIP – e.g. by increasing your bandwidth.

More on VoIP monitoring with PRTG

How can I improve latency in the WAN?

Every sysadmin should know the latency values of their WAN, for latency is often the cause of poor WAN performance. Latency always has consequences. It must therefore be kept within reasonable limits. Latency spikes lead to malfunctions or lost connections. With PRTG, you can monitor latency continuously and be immediately alerted in the event of a drop in performance – giving you plenty of time to fix a problem before users catch on.

More on latency and jitter monitoring

Is it possible to measure WAN latency via a simple ping test?

You can of course enter an individual ping command to obtain a one-time measurement of latency. But such a test will only provide you with a single measurement point. PRTG lets you monitor WAN latency around the clock, and thus gives you the bigger picture. You'll be able to tell, for example, if latency tends to spike at certain times and not at others.

With ping monitoring, you can monitor availability at any time of the day or night.

What should I do about packet loss in the WAN?

Data packets may get lost in a WAN as they make their way from one computer to another. Overloaded routers or switches are two possible causes of packet loss. But which router or switch should you replace in the WAN? You'll need an overview of your entire network to know for sure. That’s where PRTG comes in.

More on packet loss

PRTG is worth it: You’ll optimize your entire IT!

The costs for a one-year PRTG license usually pay for themselves within a few weeks.

PRTG improves the reliability of your network

PRTG improves the reliability of your network

PRTG saves network management costs

PRTG saves network management costs

PRTG saves time spent on network management

PRTG saves time spent on network management

PRTG: The swiss army knife for sys admins

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
  • New REST API Sensor: Monitor almost everything that provides XML or JSON

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

German quality engineering




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, PRTG User Manual, videos, webinars, 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 (April 21st, 2020)


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Unified Monitoring

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

Supported Vendors & Applications


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