Paessler PRTG

Monitor network activity
with PRTG


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    Keep an eye on all
    your network activity

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    Monitor bandwidth, databases
    and network devices

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    PRTG uses Flow technology, SNMP, and packet sniffing to monitor network activity













Monitor network activity proactively

Network activity monitoring software provides you with an overview of your entire network, and allows you to keep a constant eye on all network processes. You’ll always know if everything is OK with your network, or if something needs your attention. And that means you can react proactively to potential problems and prevent costly crashes.


Three advantages of network activity monitoring with PRTG

Maintain total control of your network

Maintain total control
of your network

PRTG is a powerful network monitoring solution. Our tool lets you maintain constant control of your entire network, and ensures you always know the current status of all devices and connections.

Stay informed of network processes

Stay informed
of network processes

A program is hogging bandwidth, network latency increases at certain times of the day, a printer has gone offline – PRTG informs you whenever something goes awry in your network. Check at any time to see if everything is OK with your network, and of course, reap the full enjoyment of obtaining an error-free report from PRTG!

Receive custom notifications

Receive custom

PRTG monitors all network activity, around the clock. In the event of an error, you can choose to be informed in real time. Define an unlimited number of threshold values and incidents for which you would like to receive an automatic notification. Depending on your needs, PRTG will send your alerts by email, SMS, or push notification.


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

Set up PRTG in minutes and use it on almost any mobile device.


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 in one view!


vendors vm ware



PRTG monitors network activity thoroughly and efficiently


 iAn IP address (internet protocol address) is a numerical representation that uniquely identifies a specific interface on the network. IP addresses are binary numbers but are typically expressed in decimal form (IPv4) or hexadecimal form (IPv6) to make reading and using them easier for humans.
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Bandwidth usage 

Bandwidth usage 

Current bandwidth usage is a key figure for measuring the performance of your network. With PRTG, you can check to make sure your ISP is providing the amount of bandwidth that is promised in your agreement.

You can also see which service or server is using the most bandwidth. An easy-to-read diagram and straightforward maps let you recognize at a glance how much bandwidth is required for each protocol, IP address, and port.




When it comes to the day-to-day operations of your business, it is vital that your databases always be up and running. PRTG provides 24/7 monitoring of the query time, response time, and availability of your databases – whether they be Microsoft SQL, MySQL, PostgreSQL, or Oracle SQL.

The PRTG dashboard offers a global overview of the performance of your databases, and is entirely customizable. For a more in-depth look, use self-defined SQL queries to query specific data sets from your database, and then monitor the return value.

Network speed

Network speed

Network speed is another key figure for measuring the performance of your network. Along with bandwidth, PRTG monitors the latency of your network. A spike in data transmission can result in a network bottleneck, which in turn will cause data to travel considerably slower, and in worst case scenarios provoke a crash.

PRTG clearly displays all the information you need with regard to network speed. If network speed takes a hit, you’ll be informed at once via your dashboard, or if you prefer, by way of a custom notification. PRTG measures network speed in LANs, WiFi networks and WANs.



To obtain a comprehensive picture of network activity, you will also need to keep a constant eye on your hardware. Routers and switches are the control centers of your network and send data packets to end devices. PRTG informs you of problems before actual failures arise, which means you will be able to avoid unnecessary downtime.


How PRTG monitors network activity


Network Activity Monitor: Comparing 3 different technologies

 i How PRTG defines sensors

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.)



SNMP is a simple protocol that can be used to monitor network activity. Its big advantage: SNMP is supported by many manufacturers and puts minimal strain on CPU and network loads. SNMP can be used to display a complete overview of your network activity. On the other hand, it does not allow for the in-depth analysis of network activity. To the SNMP Traffic sensor

Flow technology

Flow technology

Flow technologies (NetFlow, jFlow, sFlow, IPFIX) are highly effective at monitoring larger networks. Most of the time, these protocols are specially designed for the routers and switches of a specific manufacturer (e.g. NetFlow for Cisco), but often they are supported by other manufacturers as well. To the Flow sensors

Packet Sniffer

Packet Sniffer

Packet sniffing allows for the detailed analysis of network activity according to IP addresses, protocols, and data types. Because this monitoring is more comprehensive, it tends to put a greater strain on your CPU and network loads. To the Packet Sniffer sensor










Monitor network activity in different locations

Thanks to its remote probes, PRTG is not only LAN monitoring software, but can also be used to monitor network activity at a variety of different locations.

Simply install PRTG on one computer in your network (the PRTG Core Server) and then add one or more remote control to some others.

These probes gather monitoring data in the network to be monitored, and then send this data to the PRTG server for analysis. Remote probes can be installed in the same environment as the PRTG Core Server, or in a different network at a separate site. The only requirement is that the probes communicate continually with the server via the network or Internet.

This feature is invaluable, in particular for service providers or companies with multiple subsidiaries. PRTG lets you centrally monitor several different locations or customer networks with just one installation (and one license!).

You’ll therefore not only save time spent on administration, but also cold hard cash!


Overview: SNMP, Packet Sniffer, Flow



Packet Sniffer

Flow (IPFIX, NetFlow,
sFlow, jFlow)



Easy to complex (depending on
filter rules used)

Can be complex
(e.g., the switch must
be configured)

Traffic can be filtered




Differentiate bandwidth usage by protocol or IPs




PRTG can show Toplists (Top Talker, Top Connections, Top Protocols, custom)




Filter bandwidth usage by IP




Filter bandwidth usage by MAC address




Filter bandwidth usage by physical network port




Monitor network parameters other than bandwidth usage




CPU load on the machine running PRTG


Higher, depends on the
amount of traffic

Higher, depends on the
amount of traffic

Excess bandwidth usage of monitoring


None (except when monitoring
switch ports are used)

Depends on the traffic


quote steve coppin

“I particularly like having breakfast at home and just surveying my domain, and understanding what's working and what isn't.”

Steve Coppin, Oxford University


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.”

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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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PRTG makes your job easier

Our monitoring software frees you to focus on other tasks by promptly notifying you of potential issues.


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Save effort

PRTG gives you one central monitoring tool for your servers and entire network. Enjoy a quick overview of your whole infrastructure via our dashboard and app.

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Save time

Getting started with PRTG is a breeze. Setting up or switching from another network monitoring tool is easy thanks to the auto-discovery and pre-configured device templates.

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Save money

80% of our customers report substantial cost savings with network monitoring. Your costs of licenses will likely pay for themselves within weeks.



“Easy to implement and configure with good technical support.”

R. v. S., ICT Manager at Heinen & Hopman Eng BV


Create innovative solutions with Paessler’s partners

Partnering with innovative vendors, Paessler unleashes synergies to create
new and additional benefits for joined customers.


Paessler and Plixer provide a complete solution adding flow and metadata analysis to a powerful network monitoring tool.

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IT that works constitutes a business-critical basis for a company's success. Availability and security must be defined for the respective purpose and closely monitored – by OT and IT alike.

Read more


Siemon and Paessler bring together intelligent building technology and advanced monitoring and make your vision of intelligent buildings and data centers become reality.

Read more


PRTG the multi-tool

PRTG: The multi-tool for sysadmins

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

  • HTTP API: Access monitoring data and manipulate monitoring objects via HTTP requests
  • Custom sensors: Create your own PRTG sensors for customized monitoring
  • Custom notifications: Create your own notifications and send action triggers to external systems
  • REST Custom sensor: Monitor almost everything that provides data in XML or JSON format


Still not convinced?



More than 500,000 sysadmins love PRTG

Paessler 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.



Try Paessler PRTG for free

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




Network Monitoring Software - Version (April 10th, 2024)


Download for Windows and cloud-based version PRTG Hosted Monitor available


English, German, Spanish, French, Portuguese, Dutch, Russian, Japanese, and Simplified Chinese


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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