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  1. Home>
  2. IT Topics>
  3. Network>
  4. Offline Network Monitoring Tool
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Offline Network Monitoring with PRTG

Maximize the performance and the protection of your air-gapped networks

  • Implement secure infrastructure monitoring for offline networks
  • Receive instant alerts and detailed visual reports
  • Address the requirements of industries with high security demands
Free download
product overview

Our users give top ratings for monitoring with Paessler PRTG

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PRTG offline network monitoring: What you will find on this page

Table of content
  • Secure your air-gapped environment with PRTG
  • PRTG essentials for offline network monitoring
  • What offline network monitoring looks like in PRTG
  • 3 reasons why PRTG boosts your offline network monitoring
  • Beyond offline networks - what PRTG has to offer
  • Explore our preconfigured PRTG sensors for offline network monitoring
  • Offline network monitoring: FAQ

PRTG makes offline network monitoring as easy as it gets

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

Free download
PRODUCT OVERVIEW

Secure your air-gapped environment with PRTG

If you're in a business that needs to keep its networks extra secure, offline network monitoring — also called air-gapped network monitoring — is a must. That includes government agencies, military bases, financial institutions, and critical infrastructure providers.

In these settings, where network issues or downtime could have some pretty serious consequences, Paessler PRTG offers a powerful offline monitoring tool. It provides comprehensive visibility into air-gapped networks, maintains strict security protocols, and enables early detection of potential threats or performance issues, ensuring maximum uptime.

Table of content

PRTG essentials for offline network monitoring

PRTG is a perfect fit for offline environments. It uses advanced remote and multi-platform probes to provide powerful monitoring features. This way you can make sure your network always reaches optimal performance and provides you with all essential tools to resolve issues before they become serious problems.

icon PRTG probe

Multi-platform & remote probes

You can install remote probes of PRTG directly within air-gapped networks, whether you're using Windows, Linux, or macOS. These probes make it easy to collect and transmit data securely, so you can keep your isolated network safe while getting comprehensive server monitoring.

icon PRTG sensor

Extensive sensor library

The PRTG sensor library has sensors for almost every device, and you can customize the thresholds to fit your offline environment. You need sensors for Windows Server environments, plus great support for DNS services and syslog data collection, so you can cover your air-gapped infrastructure thoroughly? Then you will find what you’re looking for here.

icon reports

Customizable dashboards and reporting

PRTG gives you a clear, graphical, and easy-to-understand view of what's going on with your network. Create custom dashboards to get an instant overview of your air-gapped environment. You can also create detailed reports and graphs for trend analysis and compliance documentation. This helps you make informed decisions and meet regulatory requirements.

icon protocol

Advanced protocol support

Make the most of the advanced protocol support native to PRTG, including NetFlow integration for in-depth traffic analysis in offline environments. Keep an eye on bandwidth usage and spot unusual data flows or potential threats, making your air-gapped network more secure and efficient.

What offline network monitoring looks like in PRTG

Diagnose network issues by continuously tracking bandwidth, network performance, and security. Show network traffic patterns, resource utilization, 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 isolated environment anomalies.

PRTG Screenshot device tree view

Device tree view of the complete monitoring setup

PRTG screenshot map entire it infrastructure

Custom PRTG dashboard for keeping an eye on the entire IT infrastructure

PRTG screenshot graph live data traffic

Live traffic data graph in PRTG

Start monitoring offline networks with PRTG and see how it can make your network more reliable and your job easier.

Free download
PRODUCT OVERVIEW

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”

3 reasons why PRTG boosts your offline network monitoring

icon security

Strengthen your security

PRTG helps keep your air-gapped network secure by using dedicated probes within your isolated environment. With this approach you don’t need external connections, which is a no-brainer when you want to secure an offline network. You can keep an eye on things 24/7, quickly alerting admins to potential security threats.

icon performance

Optimize the performance

Keep your offline environment running like a well-oiled machine, thanks to the comprehensive monitoring features PRTG provides. Our monitoring solution carefully tracks key performance indicators and metrics like bandwidth usage, CPU load, and memory utilization. By identifying bottlenecks and supporting resource optimization, PRTG makes sure your network always performs at its best.

icon compliance

Meet compliance requirements

PRTG helps you meet regulatory requirements by keeping detailed logs and providing comprehensive reporting capabilities. It records your network activities, so you can generate customizable reports. These features help you simplify your regulatory reporting processes, though you might need additional tools or configurations to comply with various industry standards.

Beyond offline networks – what PRTG has to offer

Unified monitoring

PRTG gives you one place to manage all your monitoring needs, simplifying network management of diverse IT environments along the way. Its powerful API supports the integration with other management tools, improving your existing workflows. This unified approach helps you and your teams to respond to incidents faster, so it’s an easy way to keep your entire offline network infrastructure up and running.

Automated network discovery

Setting up each device in your air-gapped network manually is the most monotonous work you can imagine? PRTG got your back with its automatic device detection functionality. It automatically shows all of your network devices and creates an easy way for you to configure visual network maps of your infrastructure, giving you a clear overview of your entire IT landscape.

Scalability for growing networks

PRTG is great when you want to know exactly what’s going on with all your devices, and has no problem whatsoever when you need to expand your existing network. Its distributed architecture, which includes multiple probes, lets you monitor large-scale infrastructures effectively. Whether you're managing a small offline environment or a huge enterprise network, PRTG can grow with your monitoring requirements without affecting performance.

Flexible deployment options

Pick the deployment method that's right for your company with the flexible options of PRTG. The on-prem installation gives you full control over your monitoring environment, keeping all sensitive data within your secure perimeter. This level of control is especially important for companies with strict data security requirements.

Comprehensive alerts and notifications

Incorrect or missing alerts and notifications, especially in such a security-relevant area as offline network monitoring, are a massive problem. Customizable notifications and advanced alerting based on your specific needs, receiving information via email, SMS, or push notifications are a must. Escalation procedures for critical issues that notify the right team members quickly is also essential. All of this and more are out-of-the-box features PRTG has to offer.

Explore our preconfigured PRTG sensors for offline network monitoring

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!

SNMP Traffic v2

The SNMP Traffic v2 sensor monitors bandwidth and traffic on a device. It can show the following:

  • Number of incoming and outgoing broadcast, multicast, unicast, and non-unicast packets
  • Number of incoming and outgoing discards and errors
  • Total, incoming, and outgoing traffic
  • Number of incoming, unknown protocols
SNMP Traffic v2
SNMP Traffic v2

Ping v2

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

Ping v2
Ping v2

Windows CPU Load

The Windows CPU Load sensor monitors the CPU load on a system via Windows Management Instrumentation (WMI) or Windows performance counters. It can show the following:

  • CPU load of the processor
  • Total CPU load
Windows CPU Load
Windows CPU Load

Port v2

The Port v2 sensor monitors a network service by connecting to one or more of its TCP/IP ports. It can show the following:

  • Number of open and closed ports
  • Number of errors
  • Maximum time until a request to connect to a port was accepted
Port v2
Port v2

Syslog Receiver

The Syslog Receiver sensor receives and analyzes Syslog messages. It can show the following:

  • Number of dropped packets on the syslog port
  • Number of messages categorized as "error" and “warning”
  • Number of received Syslog messages
Syslog Receiver
Syslog Receiver

See the PRTG Manual for a list of all available sensor types.

PRTG is compatible with all major vendors, products, and systems

compatible with all major vendors, products, and systems

PRTG makes offline network monitoring as easy as it gets

Custom alerts and data visualization let you quickly identify and prevent network outages and downtime.

Free download
PRODUCT OVERVIEW

”Adopting PRTG has been like going from being in the dark to being in the light. Before, we had limited visibility into what was happening in the infrastructure and in the network. Now, however, thanks to the comprehensive dashboard and real-time notifications, we receive constant updates on the status of facilities and services, and our way of working has gone from passive to proactive.”

Luca Meneghesso, Senior IT infrastructure and Security Specialist
Banca Profilo

”GESAC increasingly focuses on innovation to improve the quality of services offered and the experience of passengers handled every day by Naples Airport. Thanks to PRTG, we finally have unified, automatic, and continuous monitoring of the airport network and can guarantee quick and timely interventions.”

Domenico Ciervo, GESAC ICT Manager
Naples International Airport

”As an international company, PRTG is ideal for us. If something went down half way across the world, we wouldn’t be woken up – we can rely on PRTG to identify the problem and alert us before it occurs – enabling the right person, in the right time zone to resolve the problem. At the end of the day, if we’re to provide an internal network experience for our employees that meets expectations, we need a tool like PRTG to be successful.”

Barry Kelly, Systems Engineer
Skyscanner

“I would recommend PRTG because it has helped us significantly improve service uptime by highlighting important alerts that would otherwise result in a system failure or service disruption if action was not taken. Thanks to PRTG, we can ensure that The Ritz London’s network and IT systems are five-star, just like the hotel.”

Richard Isted, IT Manager
The Ritz London

Your offline network monitor 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
Cisco

We are a Cisco Select Developer Partner  

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?

  • Easy integration of Cisco hardware and software with PRTG
  • State-of-the-art features for monitoring your Cisco environment
  • Expert technical support around your Cisco monitoring setup

Create innovative solutions with Paessler’s IT partners

Partnering with innovative IT vendors, Paessler unleashes synergies to create
new and additional benefits for joined customers.

KnowledgeRiver

KnowledgeRiver

Combining their tools to a powerful solution for advanced analysis and automation, KnowledgeRiver and Paessler enable IT teams to ensure best performance for their infrastructure and networks.

Read more
baramundi

baramundi

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.

Read more
IP Fabric

IP Fabric

Combining PRTG’s broad monitoring feature set with IP Fabric’s automated network assurance creates a new level of network visibility and reliability.

Read more

Find the root cause of the problem with our PRTG offline network monitoring solution

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

Free download
PRODUCT OVERVIEW
Paessler PRTG

Paessler 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

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Languages

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

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Monitor everything

Network devices, bandwidth, servers, applications, virtual environments, remote systems, IoT, and more

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Pricing

Choose the PRTG Network Monitor subscription that's best for you

Offline Network Monitoring: FAQ

 

What is offline network monitoring, and why is it important for network security?

Offline network monitoring, also known as air-gapped network monitoring, is all about keeping an eye on networks that are physically isolated from unsecured or public networks. It's a crucial part of maintaining security and performance in highly sensitive environments, such as government, military, or financial institutions, where data breaches could have severe consequences.

How does PRTG ensure the security of air-gapped networks?

PRTG uses remote and multi-platform probes that work within air-gapped networks. These probes collect monitoring data without needing external connections, which helps keep your network isolated and secure. The architecture is designed to work with firewalls, so you can rest easy knowing your network is protected while getting comprehensive monitoring.

Can PRTG monitor both offline and online networks at the same time?

Yes, PRTG can monitor both offline and online networks at the same time. You can set it up to use different probes for various network segments, which makes it a great monitoring solution for organizations with complex network environments.

What types of network devices and systems can PRTG monitor in an offline environment?

PRTG can monitor a wide range of devices and systems in offline environments, including servers, routers, switches, firewalls, and applications. It supports various monitoring protocols such as SNMP, WMI, and SSH, allowing for comprehensive coverage of your air-gapped infrastructure. PRTG can track everything from network traffic and bandwidth usage to server performance and application availability.

How does PRTG handle alerts and notifications in air-gapped networks?

PRTG can be set up to send alerts and notifications within the air-gapped network. This can include email alerts, SMS notifications, or integration with internal ticketing systems, so IT teams are quickly informed of any issues without compromising network isolation. You can customize the alerting system to set thresholds and escalation procedures that fit your organization's needs.

How does PRTG compare to other network monitoring tools for offline environments?

PRTG has a lot going for it compared to other network monitoring software like Nagios Core, SolarWinds, or free network monitoring solutions. PRTG is different from some free tools that have limited capabilities. It's a comprehensive, enterprise-grade monitoring solution designed specifically for air-gapped networks. It supports a wide range of operating systems and has more features than Nagios Core. SolarWinds is a strong competitor, but its pricing model is often more flexible, especially for smaller deployments. Its intuitive interface and dedicated offline monitoring capabilities make it a superior choice for many organizations requiring secure, air-gapped network monitoring.

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.

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.

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Still not convinced?

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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 offline network with PRTG and see how it can make your network more reliable and your job easier.

Free download
PRODUCT OVERVIEW

Products

  • Paessler PRTG
    Paessler PRTGMonitor your whole IT infrastructure
    • PRTG Network Monitor
    • PRTG Enterprise Monitor
    • PRTG Hosted Monitor
    • PRTG extensions
      Extensions for Paessler PRTGExtend your monitoring to a new level
  • Icon Features
    FeaturesExplore all monitoring features

Monitoring with PRTG

  • Network monitoring
  • Bandwidth monitoring
  • SNMP monitoring
  • Network mapping
  • Wi-Fi monitoring
  • Server monitoring
  • Network traffic analyzer
  • NetFlow monitoring
  • Syslog server

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Thurn-und-Taxis-Str. 14, 
90411 Nuremberg 
Germany

info@paessler.com

+49 911 93775-0

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