Free 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
Our users give top ratings for monitoring with Paessler PRTG
PRTG network sniffer: What you’ll find on this page
PRTG makes network sniffing as easy as it gets
Custom alerts and data visualization let you quickly identify and prevent network performance issues.
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.
3 reasons why to choose PRTG to sniff out network issues
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.
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.
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 with the PRTG network protocol analyzer and see how it can make your network more reliable and your job easier.
“All-around winning “The real beauty of PRTG is the endless possibilities it offers” “PRTG Network MonitorIT experts agree: Paessler PRTG is a great solution for IT infrastructure monitoring
network monitor”
is very hard to beat”
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.
Live data graph of a Packet Sniffer sensor
Packet Sniffer sensor in PRTG
Complete overview of all devices in a hierarchical tree structure
How PRTG network sniffer works
PRTG uses sophisticated sensors to continuously log inbound and outbound traffic across your network, analyze the content of data packets, and alert you if there are issues. Each sensor tracks a specific metric, enabling you to pinpoint (or exclude) the reason for network disruption straight away.
With our preconfigured Packet Sniffer sensor, which analyzes header traffic, you can track, for example:
- Total traffic
- Web traffic
- Email traffic
- File transfers
- Top talkers
- Top connections
- Top protocols
Combine it with any other of PRTG’s 250 preconfigured sensors to conduct more in-depth analysis, and track the health and performance of all your hardware, cloud and virtualization environments (VMware, Hyper-V, AWS…), databases (MySQL, Microsoft SQL, Oracle SQL, PostgreSQL…), and more.
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.
PRTG is compatible with all major vendors, products, and systems
Start monitoring your network's traffic with PRTG and see how it can make your network more reliable and your job easier.
Your network sniffer for Windows at a glance – even on the go
Set up PRTG in minutes and use it on almost any mobile device.
Create innovative solutions with Paessler’s partners
Partnering with innovative vendors, Paessler unleashes synergies to create
new and additional benefits for joined customers.
ScriptRunner
With ScriptRunner, Paessler integrates a powerful event automation platform into PRTG Network Monitor.
UVexplorer integrates tightly with PRTG to bring fast and accurate network discovery, detailed device inventory, and automatic network mapping to the PRTG platform.
UVnetworks
PRTG makes network sniffing as easy as it gets
Custom alerts and data visualization let you quickly identify and prevent network performance issues.
“Excellent tool for detailed monitoring. Alarms and notifications work greatly. Equipment addition is straight forward and server initial setup is very easy. ...feel safe to purchase it if you intend to monitor a large networking landscape.”
Infrastructure and Operations Engineer in the Communications Industry, firm size 10B - 30B USD
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.
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
We asked: would you recommend PRTG?
Over 95% of our customers say yes!
Paessler conducted trials in over 600 IT departments worldwide to tune its network monitoring software closer to the needs of sysadmins.
The result of the survey: over 95% of the participants would recommend PRTG – or already have.
Paessler PRTG is used by companies of all sizes. Sysadmins love PRTG because it makes their job a whole lot easier. Bandwidth, servers, virtual environments, websites, VoIP services – PRTG keeps an eye on your entire network. Everyone has different monitoring needs. That’s why we let you try PRTG for free.Still not convinced?
More than 500,000
sysadmins love PRTG
Monitor your entire IT infrastructure
Try Paessler PRTG
for 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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PRTG |
Network Monitoring Software - Version 24.4.102.1351 (November 12th, 2024) |
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Hosting |
Download for Windows and cloud-based version PRTG Hosted Monitor 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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