Custom alerts and data visualization let you quickly identify and prevent network outages and performance issues.
Are you constantly wondering what devices are connected to your network and if they pose security risks? With Paessler PRTG you can easily scan your network, to gain complete visibility into your entire network infrastructure and to identify potential issues before they impact your business operations.
PRTG scans your network and automatically detects all connected devices within minutes. You can schedule regular scans to always keep your network inventory up to date. This automation saves you countless hours of manual work while maintaining accurate network documentation.
Monitor all aspects of your network from a single, unified dashboard with preconfigured sensors. You can track device availability, bandwidth usage, and traffic patterns with minimal setup required. This complete visibility helps you make informed decisions about your network infrastructure.
Create detailed network maps that show the connections between all your devices and systems. You can customize these maps to focus on specific network segments or critical infrastructure. This visualization makes it easier to understand complex network topologies at a glance.
Identify bandwidth bottlenecks and performance issues through detailed traffic analysis and reporting. You can generate custom reports to track historical performance and plan for future capacity needs. This insight allows you to optimize your network for maximum efficiency and reliability.
Diagnose network issues by continuously tracking device availability, bandwidth usage and traffic patterns. Show connection status and other key metrics in real time. Visualize monitoring data in clear graphs and dashboards to identify problems more easily. Gain the overview you need to troubleshoot unauthorized access and system outages.
Device tree view of the complete monitoring setup
Custom PRTG dashboard for keeping an eye on the entire IT infrastructure
Live traffic data graph in PRTG
“All-around winning
network monitor”
“The real beauty of PRTG is the endless possibilities it offers”
“PRTG Network Monitor
is very hard to beat”
Without proper network scanning, you're essentially flying blind. Unknown devices might connect to your network, creating security risks. Bandwidth issues can go undetected until they cause major slowdowns. Configuration problems might lurk in the background, ready to cause unexpected outages. And when something does go wrong, you'll waste precious time trying to find the root cause.
Choose the subscription model that fits your exact needs, without paying for features you don't use. Upgrade or downgrade your plan as your network grows or changes. Start with the completely free version that includes 100 sensors to monitor your most critical network components.
Access a comprehensive knowledge base filled with tutorials, how-to guides, and troubleshooting tips whenever you need help. Reach out to our responsive support team, who can assist with complex setup questions or unexpected issues. Join an active community of PRTG users who share best practices and custom solutions.
Install remote probes to scan and monitor networks across multiple locations from one central dashboard. Access your network data securely from anywhere using the PRTG mobile apps for iOS and Android. Maintain complete visibility of your entire infrastructure even when you're away from the office.
Deploy PRTG in minutes with a straightforward installation process that doesn't require extensive configuration. Benefit from the auto-discovery feature that automatically finds devices and suggests appropriate sensors. Focus on analyzing results rather than spending days setting up complicated monitoring rules.
PRTG comes with more than 250 native sensor types for monitoring your entire on-premises, cloud, and hybrid cloud environment out of the box. Check out some examples below!
The Ping v2 sensor sends an Internet Control Message Protocol (ICMP) echo request ("ping") from the probe system to the parent device to monitor its availability. It can show the following:
• Response time
• Packet loss
• Target status
• Minimum and maximum ping time
The Port v2 sensor monitors a network service by connecting to one or more of its TCP/IP ports. It can show the following:
The SNMP Traffic v2 sensor monitors bandwidth and traffic on a device. It can show the following:
The Packet Sniffer sensor monitors the headers of data packets that pass a local network card using a built-in packet sniffer. You can choose from predefined channels. It can show the following and more:
The Port Range sensor monitors a network service by connecting to various TCP/IP ports. It tries to connect to the specified TCP/IP port numbers of a device in succession and waits for the device to accept each request. It can show the following:
See the PRTG Manual for a list of all available sensor types.
Custom alerts and data visualization let you quickly identify and prevent network outages and performance issues.
PRTG is set up in a matter of minutes and can be used on a wide variety of mobile devices.
As a member of the Cisco Partner Program, Paessler is one of the market leaders that enhances the Cisco technology portfolio with products that are proven to easily integrate with Cisco devices.
What does this mean for you?
Partnering with innovative IT vendors, Paessler unleashes synergies to create
new and additional benefits for joined customers.
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.
UVexplorer integrates tightly with PRTG to bring fast and accurate network discovery, detailed device inventory, and automatic network mapping to the PRTG platform.
Integrating monitoring results from PRTG into NetBrain maps makes the foundation for network automation.
Real-time notifications mean faster troubleshooting so that you can act before more serious issues occur.
Network Monitoring Software – Version 25.2.106.1114 (May 05th, 2025)
Download for Windows and cloud-based version PRTG Hosted Monitor available
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Choose the PRTG Network Monitor subscription that's best for you
A network scanner is a tool that examines your network to discover all connected devices by scanning IP addresses within a specified range. It provides detailed information about each device, including IP addresses, MAC addresses, and open ports. Network scanners help network administrators maintain an accurate inventory of all network devices, identify unauthorized connections, and detect potential security vulnerabilities in your network infrastructure.
PRTG works as a comprehensive IP scanner by automatically detecting all devices in your specified IP range. The auto-discovery feature scans your entire network, identifying everything from servers and workstations to routers, switches, and firewalls. PRTG not only finds devices but also monitors their availability, tracks bandwidth usage, and analyzes traffic patterns. This functionality extends beyond basic IP scanning to provide continuous monitoring of your complete network environment across multiple operating systems including Windows, Linux, and macOS.
Yes, PRTG includes powerful port scanning capabilities that detect open ports on all network devices. The Port Scanner and Port Range sensors check TCP and UDP ports to identify which services are running and potentially vulnerable. This helps you discover security risks like unnecessarily open ports that could be exploited by attackers. Port scanning is essential for maintaining proper network security and ensuring your firewalls are correctly configured to protect your network from unauthorized access.
PRTG fully supports Wi-Fi network scanning and monitoring. You can discover all devices connected to your wireless networks, monitor signal strength, and track bandwidth usage across your Wi-Fi infrastructure. This is particularly useful for identifying unauthorized devices accessing your wireless network and for optimizing Wi-Fi performance in home networks or enterprise environments. The Wi-Fi monitoring capabilities integrate seamlessly with PRTG's other network scanning tools for comprehensive coverage.
While tools like Nmap and Advanced IP Scanner offer basic network scanning functionality, PRTG provides a much more comprehensive solution. Nmap excels at command-line scanning but lacks continuous monitoring. Advanced IP Scanner offers quick scans but has limited reporting. PRTG combines scanning with ongoing monitoring, alerting, and visualization in real-time dashboards. The free version of PRTG includes up to 100 sensors, which is sufficient for small networks, while offering upgrade paths for larger environments that require more extensive monitoring capabilities.
PRTG includes built-in traceroute functionality that helps diagnose connectivity issues by showing the path network packets take to reach their destination. This diagnostic capability helps identify where network bottlenecks or failures occur. Combined with PRTG's SNMP monitoring capabilities, you can quickly pinpoint the root cause of network problems. The Ping sensor and Packet Sniffer sensor provide additional diagnostic tools that help troubleshoot complex network issues across your infrastructure
PRTG allows you to export scan results in multiple formats including CSV for further analysis in spreadsheet applications. You can generate custom reports showing device inventories, network performance metrics, and historical data. These reports can be scheduled and automatically sent to stakeholders via email. PRTG also offers screenshot capabilities for dashboards and maps, making it easy to document your network topology and share important monitoring information with your team or management.
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.
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.
