Paessler
                    - The Monitoring Experts
  • Free download

Network Sniffer with PRTG

Fix network performance issues fast

  • Sniff out, capture, and analyze network data packets
  • Monitor traffic across your entire infrastructure
  • Filter by IP address, protocol, and data type
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Our Users Give Top Ratings for Monitoring With Paessler PRTG

Gartner peer insights
spiceworks
G2
Capterra

PRTG makes network sniffing as easy as it gets

Custom alerts and data visualization let you quickly identify and prevent network performance issues.

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Free network sniffer: Having a nose for trouble saves hours of frustration

Because enterprise networks have so many moving parts – network devices like routers or firewalls and other hardware, applications, processes, and services – diagnosing the cause of a performance issue can feel like looking for a needle in a haystack.

We've all been there. Hours (or days) tracking down a failed switch, or working out why a critical app isn't running properly… while busy colleagues sit around and wait, and your boss breathes down your neck.

Paessler PRTG monitors traffic across your entire network and sniffs out issues before your system crashes, saving you time, stress, and frustration.

Table of content

3 reasons why to choose PRTG to sniff out network issues

Warning

Instant network activity diagnostics

Don't tear your hair out trying to get to the root of a network problem. Whether it's a glitchy protocol, an issue with data packet capture, IP addresses, network security, or something else, our network analysis tool alerts you immediately and shows you what and where to check, so you can fix things double quick.

Watch

All-in-one network monitoring tool

Keep an eye on your Ethernet, Wi-Fi, or virtual network from one place. Alongside monitoring traffic, PRTG has preconfigured sensors for servers, routers, switches, and major database and cloud environments. Plus, it grows with your network, no matter how complex it gets.

Happy

Try now with full-stack functionality

Yes, really. Access PRTG's full feature set – including network management, unlimited multi-platform probes for Mac- and Linux-based monitoring, the customizable alerting and notification system, reporting, and all of our 250+ preconfigured sensors – for 30 days, 100% free.

Start monitoring your network's traffic with PRTG and see how it can make your network more reliable and your job easier.

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What network packet sniffing looks like in PRTG

Diagnose network issues by continuously tracking data packets. Show traffic volume, the sources of your network traffic, and other key metrics in real time. Visualize monitoring data in clear graphs and dashboards to identify problems more easily. Gain the visibility you need to troubleshoot dips in your network's performance. 

PRTG Screenshot device tree view

Device tree view of the complete monitoring setup

Live data graph of a Packet Sniffer sensor

Live data graph of a Packet Sniffer sensor

Packet Sniffer sensor in PRTG

Packet Sniffer sensor in PRTG

IT experts agree: Paessler PRTG is a great solution for IT infrastructure monitoring

PCMag

“All-around winning
 network monitor”

IT Brief

“The real beauty of PRTG is the endless possibilities it offers”

ITPro

“PRTG Network Monitor 
is very hard to beat”

PRTG makes network sniffing as easy as it gets

Custom alerts and data visualization let you quickly identify and prevent network performance issues.

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“PRTG helps us to keep control of our IT by making issues visible immediately – and everywhere. We always have an eye on the performance and availability of our IT and can react in time if any failures occur. On a long-term perspective, the monitoring data helps us with capacity planning so that we can deliver the required resources for our own systems as well as for our customers, without wasting money on unwarranted redundancies.”

Stein Erik Høybakk, Senior Network Engineer
TAFJORD

“All our production and business processes depend on SAP. But, of course, IT and production systems also play a crucial role in securing these processes. By incorporating SAP, production, and IT into one centralized monitoring system, we can quickly detect critical drops in performance and identify the causes of these issues. In fact, thanks to PRTG and itesys, this couldn’t be any easier.”

Andreas Schmidt, Senior Systems Engineer
Truma

“Any downtime could be detrimental to our customers. We also strive to provide the best possible service to our customers. PRTG allows us to see the health and performance of the network. Using these measurements we can make decisions on how to repair a piece of equipment before it fails and causes a service interruption.”

James Ott Jr., Communications System Technician and IT Administrator
Federal Radio

Your network sniffer for Windows at a glance – even on the go

PRTG is set up in a matter of minutes and can be used on a wide variety of mobile devices.

device overview

Find the root cause of the problem with our PRTG network sniffer solution

Real-time notifications mean faster troubleshooting so that you can act before more serious issues occur.

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Network Sniffer: FAQ

 

What is a network sniffer tool?

A sniffer (also known as network analyzer or packet analyzer) is a software that can intercept and log traffic on a network. The tool captures each packet that flows across the infrastructure and analyzes its content.

PRTG is a proprietary software that shows you, as a network sniffing tool, how much traffic is flowing through your network and where it's coming from in real time. It logs every data packet and analyzes its content, so it's quick and easy to track how much bandwidth you're using and troubleshoot performance issues.

Why use a network sniffer?

Because it helps you identify and address network performance issues before it's too late. It's like having a personal guard dog with a highly sensitive nose, continuously sniffing for signs of trouble. But a network sniffer isn't just for troubleshooting. It's also useful for the following:

  • Tracking bandwidth usage spikes (and dips)
  • Analyzing your network's overall performance
  • Identifying and pinpointing unusual traffic in your network
  • Collecting data for security analysis in your infosec team
Should I use the free network sniffer or the full version?

The simple answer is: it depends (and no, we're not trying to sidestep the question). The free sniffer tool is perfect for diagnosing a specific problem, or if you have a small network and only need to monitor traffic from limited sources. But if you have a larger, more complex network and need comprehensive monitoring, alerting, and reporting, the full version is probably the better choice. Still unsure? Try the full version for 30 days, completely free. No catches.

How much does PRTG hard disk monitor cost?

We're so confident you'll love PRTG that it comes with a free, no-obligation 30-day trial. Should you decide to keep using it, you can find our pricing list here.

What is a sensor in PRTG?

In PRTG, “sensors” are the basic monitoring elements. One sensor usually monitors one measured value in your network, for example the traffic of a switch port, the CPU load of a server, or the free space on a disk drive. On average, you need about 5-10 sensors per device or one sensor per switch port.

Still not convinced?

Love

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.

PRTG

Monitor your entire IT infrastructure

Bandwidth, servers, virtual environments, websites, VoIP services – PRTG keeps an eye on your entire network.

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Try Paessler PRTG for free

Everyone has different monitoring needs. That’s why we let you try PRTG for free.

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Start monitoring your network's traffic with PRTG and see how it can make your network more reliable and your job easier.

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