Server monitoring via
PRTG makes server monitoring via Secure Shell
both secure and efficient
- Use SSH monitoring to keep an eye on Unix-based systems
- Test dedicated Linux or macOS servers for availability and peformance
- Enjoy secure SSH monitoring thanks to an encrypted connection
PRTG keeps you in the know
Complex network infrastructures
Most corporate network infrastructures are not just limited to one single operating system or type of computer or server. Various versions of Windows Server and Client are used for many applications, as are Linux systems – even for IT infrastructures that are based mainly on Windows. The number of available web and file servers is astonishing. And most companies have at least one department that uses macOS.
Maintain an overview
As an administrator, it’s your job to keep an eye on what is going on in the company network. But with countless different tools to check in the event of a problem, things can get out of hand quickly. This is where the PRTG Network Monitor comes in. With our professional monitoring solution, you will not only be securing the operation of Windows systems, but can also take advantage of a variety of monitoring protocols to monitor Linux distributions and macOS systems. Along with the Simple Network Management Protocol (SNMP), Secure Shell (SSH) is an especially good choice for such monitoring.
SNMP stands for Simple Network Monitoring Protocol. Its usefulness in network administration comes from the fact that it allows information to be collected about network-connected devices in a standardized way across a large variety of hardware and software types. SNMP is a protocol for management information transfer in networks, for use in LANs especially, depending on the chosen version.
PRTG uses SSH monitoring to collect performance data and system information from computers and servers that can be accessed via Secure Shell. As a result, PRTG lets you check the availability, response times, and other system data of your Unix-based systems. This information can then be used to quickly fix network malfunctions and protocol errors and increase the availability of applications and services on Linux and macOS systems. SSH is also a good choice for monitoring SAN (storage area network) systems. And to do so, you won’t need to install any additional software on your target systems.
Security is guaranteed
The SSH protocol transmits monitoring data over an encrypted connection, thereby ensuring your systems always remain secure. The SSH authentication can be done with a password or OpenSSH-RSA private key - with PRTG, both are possible.
PRTG lets everyone work with the utmost security.
Immediately see if your server is available
– even while on the go
PRTG can be started within minutes and it's compatible with many mobile devices.
How SSH monitoring with PRTG works
What is a sensor?
In PRTG, “sensors” are the basic monitoring elements. One sensor usually monitors one measured value in your network, e.g. the traffic of a switch port, the CPU load of a server, the free space of a disk drive. On average you need about 5-10 sensors per device or one sensor per switch port.
Collecting data with SSH
By using Secure Shell (SSH) for your monitoring, you can gather the system information and performance data of servers connected to Linux and Unix distributions, macOS computers, and SANs. PRTG automatically connects to the target server and establishes the SSH connection between the two computers. You therefore won’t have to install any additional software on the target system.
To monitor via SSH, PRTG requires login information for the target system, ideally with root access. PRTG allows for authentication using a password or an OpenSSH-RSA private key. Simply enter your login details into PRTG in the device settings. With PRTG, you can also use these details to access more than just individual devices, and have the information transmitted automatically so it does not have to be re-entered each time a new device is added. Find out more about authentication in our knowledge base.
Several SSH sensors at your disposal
If you used an IP address or DNS name to add your end device to PRTG, then you have the choice of several native SSH sensors for ensuring the smooth functioning of your network. PRTG comes with default sensors for monitoring average loads, available inodes, and hard drive capacity. You can also monitor the ability of a Linux or macOS computer to connect to another device, or query FTP servers by way of SFTP (FTP over SSH). Your SSH monitoring is made complete by the built-in SAN sensors of PRTG, which let you keep a constant eye on the logical and physical disks, system status, and storage information of your SANs!
An IP address (internet protocol address) is a numerical representation that uniquely identifies a specific interface on the network. IP addresses are binary numbers but are typically expressed in decimal form (IPv4) or hexadecimal form (IPv6) to make reading and using them easier for humans.
Create your own sensors
With PRTG, if you’re unable to find the required sensors for your SSH monitoring, you can simply write your own. To do so, create a script that returns a numerical value, XML, or JSON from the target device, and monitor the result with an SSH script sensor. PRTG can be customized to meet all your needs.
See the PRTG user manual for a list of all available SSH sensors
An introduction to SSH monitoring with PRTG
PRTG simplifies your day
Our monitoring software works for you and promptly notifies you of potential issues.
It frees you to concentrate on your day-to-day tasks with peace of mind.
PRTG saves time
With PRTG, you get one central monitoring tool for your servers and entire network. Enjoy a quick overview of your whole infrastructure via our dashboard and app.
PRTG saves worry
Customizing PRTG is a breeze. Getting started or switching from another network monitoring tool is easy thanks to the auto-discovery and pre-configured device templates.
“We can all work with greater peace of mind knowing that our systems are constantly
Markus Puke, Network Administrator, Schüchtermann Klinik, Germany
SSH data gathered by PRTG
Ping is a command-line utility, available on virtually any operating system with network connectivity, that acts as a test to see if a networked device is reachable. The ping command sends a request over the network to a specific device. A successful ping results in a response from the computer that was pinged back to the originating computer.
- Server availability and response times
- Average server load
- Available memory (Meminfo)
- Available disk space
- Number of available inodes
- Connectivity to other devices via remote Ping
- Custom values via user-defined scripts
- Response time of an FTP server in a Linux/Unix environment (SFTP)
PRTG also uses SSH to gather the following data from an SAN:
- Status of an SAN enclosure, including the statuses of power supplies and controllers
- Status of logical and physical disks, including I/O operations and the amount of data transferred per second
- System status of an SAN, including temperature and power supply data
Trusted by 300,000 users
and recognized by industry analysts as a leader
- Unlimited version of PRTG for 30 days
- After 30 days, PRTG reverts to a free version
- Or, you can upgrade to a paid license anytime
4 good reasons to choose PRTG as your SSH monitoring tool
Servers, services, and applications suffer fewer disruptions and react faster, which in turn boosts their availability.
Network failures and protocol errors are detected promptly and can therefore be remedied at once – not just on Windows operating systems, but also Linux-based ones!
Secure data traffic
With SSH monitoring, you can be sure the connections required for your monitoring are secure thanks to SSH authentication and encryption. As a result, you will minimize security risks.
The convenient PRTG dashboard provides an overview of the status, functionality, and performance of your entire server infrastructure.
Over 95% of our customers recommend PRTG
Paessler AG worldwide trialled PRTG in over 600 IT departments.
The aim was to tune the network monitoring software closer to the needs of the administrators.
The result of the survey: over 95% of the participants would recommend PRTG - or already had.
PRTG offers integrated complete Active Directory Monitoring in real time. Find out more about Active Directory Monitoring here.
SSL Monitoring: PRTG determines the extent to which your connections are protected. You can therefore learn if your connections are strong, weak, or not protected at all.
PRTG: The Swiss Army knife for sysadminsAdapt PRTG individually and dynamically to your needs relying on a strong API:
- HTTP API: Access monitoring data and manipulate monitoring objects using HTTP requests
- Custom Sensors: Create your own sensors for customized monitoring
- Custom Notifications: Create your own notifications to send alarms to external systems
- REST Custom Sensor: Monitor almost everything that provides XML or JSON
Still not convinced?
More than 300,000 sysadmins love PRTG
PRTG is used by companies of all sizes. Sysadmins love PRTG because it makes their job a whole lot easier.
Still not convinced?
Monitor your entire IT infrastructure
Bandwidth, servers, virtual environments, websites, VoIP services – PRTG keeps an eye on your entire network.
|Network Monitoring Software - Version 126.96.36.1992 (April 21st, 2021)|
|Download for Windows and cloud-based version PRTG Hosted Monitor available|
|English, German, Spanish, French, Portuguese, Dutch, Russian, Japanese, and Simplified Chinese|
|Up to 100 sensors for free (Price List)|
|Network devices, bandwidth, servers, applications, virtual environments, remote systems, IoT, and more|
Supported Vendors & Applications