All-in-One NetFlow Analyzer PRTG

 

  • NetFlow Analyzer PRTG analyzes your bandwidth & traffic
  • PRTG supports all different NetFlow versions
  • PRTG analyzes all important Flow protocols
  • The PRTG NetFlow Collector saves and processes flows

 

Freeware Download
100 sensors, perfect for smaller networks


Get a holistic view of your network with NetFlow Analyzer

 



NetFlow lets you analyze and monitor your bandwidth and determine, for example, the amount of traffic caused by IP addresses, protocols, or programs. In order to carry out such an analysis, you'll configure your routers such that flow packets are sent to a computer with a PRTG probe. Flow technology puts little strain on your CPU and is especially adapted for networks with heavy data traffic.

NetFlow protocol is mainly supported by Cisco routers and switches.

With the PRTG NetFlow Analyzer you can get a holistic view about your network and what your bandwidth is being used for.

 

 

i NetFlow is a protocol for collecting, aggregating and recording traffic flow data in a network. NetFlow data provide a more granular view of how bandwidth and network traffic are being used than other monitoring solutions, such as SNMP. NetFlow was developed by Cisco and is embedded in Cisco’s IOS software on the company’s routers and switches and has been supported on almost all Cisco devices since the 11.1 train of Cisco IOS Software. Read more ...

NetFlow analysing software, without any additional costs.

no need for upgrades

No upgrade necessary

PRTG is an all-in-one package! Our network monitoring tool requires no additional upgrade or tool to analyze your bandwidth using Cisco NetFlow. All it takes is a standard PRTG configuration and you’ll be on your way to monitoring the entire traffic which passes via your routers and switches.

all in one

One tool for everything

With PRTG, you get one central software solution for all of your monitoring – and a complete overview. The need for a combination of many different tools is a thing of the past. PRTG lets you monitor your bandwidth use, server, CPU, website, cloud services, and much more. Try the NetFlow collector for yourself.

Auto Discovery

Quick configuration

PRTG uses Auto Discovery to automatically set up comprehensive monitoring, and creates all the sensors you need. Switching from other monitoring software to PRTG therefore takes no time at all.

Toplists

Toplists

By default, Toplists in PRTG always split up the traffic within the sensor among Top Talkers (bandwidth use according to IP address), Top Connections (according to connection), and Top Protocols (according to protocol). With Toplists, you’ll enjoy a categorized overview which makes NetFlow traffic analysis easy.

PRTG sensors for NetFlow analysing

 

NETFLOW V5 SENSORS

NetFlow version 5 is in widespread use. With PRTG, you get a compatible NetFlow V5 sensor, as well as a NetFlow V5 custom sensor.

 

 

NETFLOW V9 SENSORS

NetFlow version 9 is an advanced form of NetFlow technology. PRTG provides you with appropriate sensors for its use: the NetFlow V9 sensor and NetFlow V9 custom sensor.

 

 

IPFIX SENSORS

Internet Protocol Flow Information Export (IPFIX) is an advanced form of Cisco's NetFlow system. PRTG offers two sensors for its use: The IPFIX sensor and IPFX custom sensor, which you can customize to meet your own specific needs.

Screenshots
This is what NetFlow analysing looks like in PRTG

NetFlow Analyzer PRTG - 3 useful applications  

PRTG lets you recognize if your switches are not equipped to handle the quantity of data of your backup solution.
Before they become completely overloaded.
Should these switches overload during a backup anyway, PRTG will enable you to quickly find the perpetrator.

 

Identify bandwidth hogs

Individual sources often use disproportionately high amounts of bandwidth. These sources may be individual users, but also programs or specific data. With our NetFlow analysing software, you’ll evaluate IP addresses and analyze netflow traffic.

Spot load peaks early

Many companies experience fluctuations in access to various websites or internally-used applications. Define your own thresholds so you can be informed early: ideally, before the performance of your system takes a hit.

  

Avoid backup overloads

Thorough backups can lead to problems for the entire network. Such problems are frequently the result of individual routers or switches which overload during the backup and thwart the entire network. Use NetFlow Analyzer PRTG to monitor and find the causes, and thereby optimize your network.

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

Markus Puke, Network Administrator at the Schüchtermann-Klinik.

 

PRTG simplifies your day!

Let our free NetFlow analyzer work for you,
so you can concentrate on your day-to-day tasks with total peace of mind.

PRTG saves time

With PRTG, you get one central monitoring tool with which to monitor your bandwidth and network via NetFlow, SNMP, or Packet Sniffing. Enjoy a quick and easy overview thanks to our dashboards and maps.

PRTG saves worry

Customizing PRTG is a breeze. When it comes to NetFlow analysis, you’ll get all the right sensors in their many different forms. And this will save you time as your get your monitoring up and running.

PRTG saves money

PRTG is worth it. 80 % of our customers report savings in the area of network management. And the respective costs for our PRTG licenses pay for themselves in an average of only a few weeks.

Practical tip: “Hey Gerald, what would you tell administrators looking to use PRTG to analyze their NetFlow?”

“Cisco has continuously developed 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 works as a technical editor at PAESSLER AG.

NetFlow Analyzer PRTG:
Setup in 3 simple steps!

 


Configure the router's NetFlow protocol so it sends NetFlow packets to the computer running the PRTG Network Monitor:

Configure PRTG

Configure PRTG. Flow sensors are even available in PRTG's Free Trial Version. Choose a suitable license to enjoy comprehensive monitoring with over 200 types of sensors. You can also do this at a later time.

Configure your router or switch

Configure your Cisco router or switch so that it exports and sends NetFlow data to a computer running a PRTG probe. In the next step, you'll create the NetFlow sensor on this computer. Pay special attention to the Flow version which is exported, for a compatible sensor must be used in PRTG.

Create sensors

Create NetFlow sensors which are appropriate for the exported Flow version and target address and configure the UDP port and an IP address in the sensor settings where you would like the flows to be received. Another option is to indicate the IP address of a specific Cisco device if you would like the flows to be received by such a device, and turn on sampling mode if you have set this mode on the target device. Enter a value for the Active Flow Timeout which is at least one minute longer than that of the device. Finally, choose which of the sensor's data traffic categories should be displayed in the various channels, and define an optional filter for the desired data.

 

Alternative: If you do not require long-term analyses for every single PC and would only like to monitor the traffic occurring presently and recently on the basis of IP or protocol, then creating a NetFlow sensor and correspondingly analyzing the data traffic in the Toplists based on IP or protocol is sufficient. More information on setup: search answers to user questions in our Knowledge Base. In this article, you'll find additional tips on the configuration of Cisco routers.

Netflow analysing for VMware


VMware and NetFlow:
VMware uses NetFlow technology in the "vSphere Distributed Switches (vDS)" product line. In principle, these virtual switches connect the virtual network cards of virtual machines (VMs) to the network by way of the physical network cards of hosts. VMware has incorporated NetFlow for these virtual switches. 

Monitoring with PRTG: Both monitoring and the NetFlow analysing of physical (Cisco) devices are operational here. Set up NetFlow in the VMware vCenter and configure it such that these flows are sent to PRTG, where a corresponding flow sensor displays and monitors the data. As long as the correct NetFlow version is used, it will make no difference to PRTG where the flows come from.

Further Information:

Over 95% of our customers recommend PRTG

Paessler AG submitted an extensive survey to more than 600 IT departments worldwide who use PRTG. The goal of this survey was to optimize and fine-tune our Network Monitoring Software to better meet the needs of administrators. One survey result: more than 95% of the participants would recommend PRTG - or have already done so.

 

Other Flow sensors

 

PRTG provides other Flow sensors which allow you to monitor your chat protocols, Citrix, FTP, Email, and other traffic.

sFlow: With an sFlow sensor, only every nth packet will be passed on: this results in even less load on the system. Find our more about the PRTG sFlow sensor here.

jFlow: jFlow lets you monitor Juniper Networks hardware, among others. Here too you can configure devices especially for PRTG. It features a high degree of similarity to NetFlow5. Find out more about our jFlow sensor

Award winning solution

We work hard on making our software as powerful and easy-to-use
as possible for our customers each and every day.
Of course it makes us proud when we get awards for that.

 

awards

Comparison: Netflow, SNMP, Packet Sniffing

 

SNMP: SNMP (Simple Network Management Protocol) is extremely popular and an easy way to read device data. It gives you an important first look, e.g. on bandwidth use, CPU, or the temperature of your hardware. More on SNMP monitoring with PRTG


Packet Sniffing: For more detailed information on your bandwidth usage, use Packet Sniffing or NetFlow. You will thus be able to take a closer look at the packets passing through individual routers or switches. More on Packet Sniffing with PRTG.


NetFlow Analysis: NetFlow is a protocol supported in particular by Cisco hardware. You therefore need a monitoring solution which is compatible with NetFlow. Such a solution (Packet Sniffing, e.g.) will enable you to analyze packets in detail. PRTG comes with a set of NetFlow sensors - at no extra charge.

 

NetFlow collector vs. NetFlow analyzer

What are the best NetFlow tools?

Many tools can collect and analyze flow data. When choosing a tool, you should consider your needs, and the extent to which you would like to analyze your data. It might also make sense to use several different tools concurrently. We have found, for example, that many administrators use Wireshark in addition to PRTG. Thanks to its flow monitoring, PRTG can give you an overall picture while allowing you to rule out possible causes of network problems. Wireshark, on the other hand, offers a detailed look at individual data packets.

What is a NetFlow collector?

A NetFlow collector captures, saves, and processes NetFlow data. Some of these tools are more effective than others at providing in-depth data analysis. Many administrators, however, use one single tool to perform the functions of both NetFlow collectors and NetFlow analyzers.

What is a NetFlow analyzer?

PRTG is a NetFlow collector and a NetFlow analyzer. It captures and processes NetFlow data, and presents this data on a dashboard. PRTG takes advantage of the toplists described above to display top talkers, top connections, top protocols, and customizable toplists. You are free to set your own threshold values. If these values are exceeded, PRTG will alert you at once.

Which NetFlow collectors and analyzers are available for Windows?

PRTG is a NetFlow collector and analyzer that runs on Windows. As our focus has always been on Windows systems, we have acquired quite a bit of expertise in the area of NetFlow monitoring with Windows. PRTG is your all-in-one Windows monitoring solution. It comes with numerous WMI sensors, as well as Windows Event Log monitoring and Windows security monitoring. It also uses technologies which will enable you to monitor non-Windows operating systems.

NetFlow analyzer download: Free or professional?

Many administrators wonder if there is an effective free NetFlow analysis tool, or if they should consider using a professional one. PRTG comes with 100 free sensors which never expire. And if you decide to expand your monitoring in the future, a professional license can be purchased at any time. PRTG licenses let you enjoy all the software’s features: alarm, reports, support, and the full range of sensors.

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“Our top priority is to continue to develop PRTG is a constant, practical, and proactive manner. Our hope is that administrators will always be ready for any new standards which arise.”

Dirk Paessler, founder and Director of Paessler AG in Nuremberg.

 

Made in Germany: The PRTG Network Monitoring Tool is the fruit of a dedicated, international team. The company was founded by Dirk Paessler who still runs it today. PESSLER AG's headquarters are located in the city of Nuremberg, in the heart of Germany.

A quick overview: PRTG provides a quick overview, whether on your desktop or as an app on your smartphone. An individually configurable dashboard features every key stat in the form of an easy-to-understand graph, so you can always make sure your network is running smoothly.

Easy configuration: Our Smart Setup guarantees a quick and easy setup. During configuration, PRTG will ping your network and create appropriate sensors, saving you a great deal of time. Furthermore, switching from other software such as Nagios is relatively quick and easy.

Outstanding support: Our support team strives to resolve inquiries within 24 hours (on business days). Discover a wide selection of videos, webinars, and instructions in our knowledge base. Our manual is also an excellent resource.

Getting started is easy: The trial version is for free, allowing you to evaluate our monitoring tool with no strings attached. To upgrade, simply search for a suitable license. You can modify your license any time you like. 

PRTG

Network Monitoring Software - Version 17.4.33.3283 (November 9th, 2017)

Hosting

Download for Windows and cloud version (PRTG in the cloud) available

Languages

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

Pricing

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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