Custom alerts and data visualization let you quickly identify and prevent issues with your LAN.
Paessler PRTG frees you to focus on other tasks by immediately notifying you of potential issues. With our all-in-one LAN monitoring tool, you get one central monitoring tool for your entire network, including your workstations, routers, switches, servers, and printers.
PRTG is really easy to set up and configure. With its automatic network discovery and more than 250 preconfigured PRTG sensors, you can start LAN monitoring in minutes. This makes switching from a different network monitoring tool to PRTG as comfortable as possible.
With PRTG, you have many technologies for LAN monitoring your local area network at your disposal. You can use SNMP, for example, which is easy to set up and only requires a minimum of resources. To monitor network traffic, you can use packet sniffing to analyze individual data packets, NetFlow for monitoring the data flow on Cisco devices, or technologies like IPFIX, sFlow, or jFlow.
You can use remote probes to monitor separate LANs with only one PRTG license; even WANs which can span several countries (or continents). PRTG can also provide you with a comprehensive overview of your virtual private network (VPN).
Diagnose network issues by continuously tracking the availability, health, and performance of your LAN network infrastructure. Show hardware health, response times, packet loss, downtime, traffic analysis by IP address, and other key metrics in real time. Visualize your LAN monitoring data in clear graphs and dashboards to identify problems more easily. Gain the overview you need to troubleshoot all kinds of network connection and performance issues.
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”
Your LAN must be completely operational at all times and therefore, your network devices and other endpoints need to be reachable. A router switches off at night without your knowledge? Not with PRTG! Our LAN monitoring solution monitors the uptime of your network round the clock – for example, with the sensor SNMP System Uptime.
Firewalls are attacked countless times each and every day. As an administrator, you must be notified immediately if your firewall is down. A Ping v2 sensor displays the availability of your firewall in real time. If there is an issue with your firewall, PRTG alerts you directly based on customizable thresholds, for example, via SMS, e-mail, or push notification. PRTG monitors firewalls from different vendors such as Fortinet or SonicWall.
Your company or organization is experiencing continuous growth? An increase in the number of employees leads to a greater amount of network traffic and even more devices. This automatically results in bandwidth bottlenecks. With our network monitoring software, you can comprehensively monitor the health and performance of all your devices, for example, with the SNMP Hardware Status sensor.
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 SNMP Uptime v2 sensor monitors the uptime of a device. It can show the following:
The SNMP Hardware Status sensor monitors the status of a server's hardware component. It can show the following:
The SNMP Cisco ASA VPN Connections sensor monitors the VPN connections on a Cisco Adaptive Security Appliance. 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 issues with your LAN.
Set up PRTG in minutes and use it on almost any mobile device.
Partnering with innovative IT vendors, Paessler unleashes synergies to create
new and additional benefits for joined customers.
baramundi and PRTG create a secure, reliable and powerful IT infrastructure where you have everything under control - from the traffic in your firewall to the configuration of your clients.
With the combination of PRTG and Insys, the monitoring specialist Paessler and the industrial gateway manufacturer INSYS icom offer a practical possibility to merge IT and OT.
Siemon and Paessler bring together intelligent building technology and advanced monitoring and make your vision of intelligent buildings and data centers become reality.
Network Monitoring Software – Version 26.1.116.1532 (February 9th, 2026)
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A local area network, or LAN, is a network that connects different network devices in a single physical location. A wide area network, or WAN, by contrast, spans distributed geographical locations.
In professional business settings, network outages can have severe consequences. Employees and customers are unable to access, for example, the company LAN or online shop, which results in an unnecessary waste of resources. That’s why administrators must be able to immediately determine the cause of an interruption and what is needed to get the network back up.
There are several reasons why you should monitor your LAN, for example:
There are 5 main features you need to look out for when choosing a LAN monitoring tool, and PRTG covers all of them.
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.
