Paessler PRTG

PRTG: All-in-one
LAN monitoring


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    PRTG monitors your
    entire LAN and WAN

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    PRTG monitors all LAN
    devices and servers

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    PRTG monitors bandwidth,
    availability, traffic and more







LAN monitoring with PRTG: This is how it works

 iBandwidth is measured as the amount of data that can be transferred from one point to another within a network in a specific amount of time. Typically, bandwidth is expressed as a bitrate and measured in bits per second (bps). It refers to the transmission capacity of a connection and is an important factor when determining the quality and speed of a network.
Read more

LAN monitoring lets you keep track of your entire local network, including your workstations, routers, switches, servers, and printers. PRTG monitors your LAN and sends notifications about connection problems, limited availability, or overloaded server.

PRTG uses SNMP, Packet Sniffing, NetFlow, and other flow protocols for monitoring your LAN.

SNMP is used the most. It is easy to set up and requires only a minimum amount of bandwidth and CPU. Individual data packets can be analyzed using Packet Sniffing, while NetFlow technology is used for the monitoring of Cisco devices.

Pre-defined sensors can also be used immediately in PRTG for other Flow technologies, such as IPFIX, sFlow and jFlow.


More than just LAN: Monitoring distributed networks and WANs is no problem with PRTG 

Distributed networks: Monitor your sites from one central location. You can monitor separate LANs with our Remote Probes - with only one PRTG license. Remote Probes collect monitoring data. Your core server evaluates this LAN monitoring data and immediately sounds the alarm if there are problems.

Remote Probes may be installed both in the same network as your core server or in other networks if the latter benefit from continuous Internet connections.

WAN: Wide area networks can stretch across several countries (or continents) and are therefore often prone to errors. In many cases, WANs contain vital business data and are used to run important applications. If you wish to increase employee productivity, then these networks must never be down. PRTG is a centralized monitoring solution for all your WANs.

PRTG also provides you with a comprehensive overview of your virtual private network (VPN).

Check out our video on distributed networks here


quote steffen ille

“The greatest advantage of PRTG? You get to rest easy.“

Steffen Ille, Bauhaus-University of Weimar, Germany


This is what LAN monitor PRTG looks like



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.



PRTG keeps an eye on these 5 pillars of LAN monitoring

Many administrators have yet to set up monitoring for their LAN networks - with disastrous effects.
When problems occur, it often takes a long time to find the bugs behind them. This costs both time and peace of mind.
Meanwhile, employees or customers are unable to access important features, resulting in an unnecessary waste of resources.
The following five elements are those which should by all means be monitored:


Monitor your LAN with PRTG

All inclusive monitoring of your
LAN with PRTG Network Monitor




In many sectors, employees need high-performance workstation computers, such as those used for video or 3D processing. Workstation functionality is thus paramount to productivity. From the hard disk to the CPU: with PRTG, you're always in the know.

More on CPU monitoring



All network data passes via the routers. They are the hubs of your LAN, and therefore must be monitored. The sooner you see your routers overloading, the quicker you'll be able to take countermeasures. PRTG lets you keep a constant eye on their status.

More on router monitoring



As distribution nodes, your switches are also under extreme pressure. All it takes is one single switch to overload for your entire LAN network to suffer. Never lose sight of your switches with PRTG. If a switch overloads, you'll notice it at once.

More on switch monitoring



PRTG monitors all kinds of hardware and servers. It supports all major manufacturers like Cisco, HP, Oracle or Dell. Whether database, mail, or web servers: PRTG gives you an uninterrupted overview and total control so your servers can run both smoothly and flawlessly. And you'll be notified quickly at the very first sign of trouble.

More on server monitoring with PRTG



How much network bandwidth do you have? Which devices and applications need how much bandwidth? With PRTG, you'll have your finger on the pulse of your bandwidth. And that means you can ensure the hassle-free operation of your company or organization.

More on bandwidth monitoring with PRTG


PRTG improves your LAN at all levels



Your LAN network should be completely operational at all times. Example: a router switches off at night - without your knowledge. Scenarios like this are virtually impossible with PRTG. You can monitor the uptime of your network any time you like by using an SNMP System Uptime Sensor.



Firewalls are attacked countless times each and every day. As an administrator, you must be notified immediately if your firewall is down. A PRTG Ping Sensor indicates the accessibility of your firewall in real time. Should your firewall crash, you'll immediately receive an SMS, e-mail, or other type of push notification. PRTG monitors firewalls from different vendors such as Cisco, Fortinet or Sonicwall.



Your company or organization is experiencing continuous growth? An increase in employees leads to a greater amount of traffic -  and even more devices. This automatically results in bottlenecks. With PRTG, you can monitor devices comprehensively with just one central tool, such as the SNMP Hardware Status Sensor.


All-in-one LAN monitoring sensors

The following sensors can be used for LAN monitoring with PRTG:


SNMP Traffic

The SNMP Traffic sensor monitors traffic on a device using SNMP.  


Packet Sniffer

Monitors the headers of data packets that pass a local network using a built-in packet sniffer. It can show the following traffic types (analyzes only header traffic!):

  • Chat (IRC, AIM)
  • Citrix
  • FTP/P2P
  • Mail, WWW
  • Remote control (RDP, SSH, Telnet, VNC)

Packet Sniffer Sensor

NetFlow V5

Shows traffic for NetFlow V5-supported devices, split by type and is able to divide traffic into channels. Traffic types include:

  • Chat (IRC, AIM)
  • Citrix
  • FTP/P2P
  • Mail, WWW
  • Remote control (RDP, SSH, Telnet, VNC)

NetFlow v5 Sensor

NetFlow V9

Shows traffic for NetFlow v9-supported devices, split by type and is able to divide traffic into channels. Traffic types include:

  • Chat (IRC, AIM)
  • Citrix
  • FTP/P2P
  • Mail, WWW
  • Remote control (RDP, SSH, Telnet, VNC)

NetFlow v9 Sensor


Monitors various parameters and services using WMI like free disk space, status of SharePoint, SQL and Exchange Servers, or Windows processes.


Shows traffic for IPFIX-supported devices, split by type and is able to divide traffic into channels. Traffic types include:

  • Chat (IRC, AIM)
  • Citrix
  • FTP/P2P
  • Mail, WWW
  • Remote control (RDP, SSH, Telnet, VNC)

IPFIX Sensor


Shows traffic for jFlow-supported devices, split by type and is able to divide traffic into channels. Traffic types include:

  • Chat (IRC, AIM)
  • Citrix
  • FTP/P2P
  • Mail, WWW
  • Remote control (RDP, SSH, Telnet, VNC)

jFlow v5 Sensor


Shows traffic for sFlow-supported devices, split by type and is able to into channels. Traffic types include:

  • Chat (IRC, AIM)
  • Citrix
  • FTP/P2P
  • Mail, WWW
  • Remote control (RDP, SSH, Telnet, VNC)

sFlow Sensor

Windows Network Card

Monitors bandwidth usage and traffic on a network interface using WMI or Windows Performance Counters and can show among others:

  • Total traffic on the network card
  • Number of received and sent packets
  • Number of discards, errors, unicast packets and unknown protocols

Windows Network Card Sensor


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 The Swiss army knife

PRTG: The Swiss Army knife 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


Unhappy with your current software? Switch to PRTG!

 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.)

Although many administrators already have one or more network monitoring tools, they are not always satisfied.

Switching to PRTG is easy: with over 250 pre-configured sensors, PRTG quickly has a grasp of your network. Its Auto Discovery feature automatically searches for devices and creates sensors. PRTG is thus configured speedily and conveniently. Switching from Nagios or other tools take no time at all.


Create innovative solutions with Paessler’s IT partners

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

IP Fabric

Combining the broad monitoring feature set of PRTG with IP Fabric’s automated network assurance creates a new level of network visibility and reliability.

Read more


Rhebo and PRTG offer a comprehensive monitoring solution for IT and OT environments: from condition monitoring through to anomaly and threat detection.

Read more


UVexplorer integrates tightly with PRTG to bring fast and accurate network discovery, detailed device inventory, and automatic network mapping to the PRTG platform.

Read more


What makes PRTG better than the rest?

A central tool

A central tool

The proper functioning of your Local Area Network depends on many different devices. With PRTG, you get a central, professional tool with which you can monitor your LAN as well as your entire network.

Say goodbye to a mishmash of individual monitoring tools! All you need is PRTG!

A clear overview

A clear overview

Your dashboard and app immediately let you see what’s working - and what’s not. And thanks to the customizable alarm feature, you’ll receive prompt alerts should anything go wrong.

Configure your sensors with just a few clicks so you can be notified before system failures arise!

Prompt alerts

Prompt alerts

Do problems crop up in your LAN? Thanks to the built-in PRTG alarm feature, you’ll be notified at once! Notifications are sent by SMS, e-mail, or a free push message to your Android or iOS device. You can even receive a SYSlog-message or acoustical alert.


gerald schoch

Practical tip: “Hey Gerald, what would you tell administrators looking to use PRTG as a NetFlow Analyzer?”

“Cisco has continuously developed the NetFlow technology. Administrators must therefore find out beforehand which NetFlow version is supported by their routers and switches. With the right PRTG sensors, setting up NetFlow monitoring is quick and easy.”

Gerald Schoch, technical editor at Paessler AG



Network Monitoring Software - Version (November 29th, 2022)


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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