Windows Subsystem for Linux (WSL): software tool improving monitoring capabilities
Windows Subsystem for Linux (WSL) is a Windows feature that lets you run a Linux environment directly on Windows. In current Microsoft documentation, WSL 2 is the default distribution type and uses a real Linux kernel inside a lightweight utility virtual machine.
There are several software projects aimed at bringing Unix-like tools to Windows, the best-known being Cygwin and MinGW-w64. WSL does not directly replace these projects, but it makes it possible to run and use native Linux applications on Windows. In WSL 2, this is done with a lightweight virtual machine and a real Linux kernel rather than a compatibility layer.
WSL quick start
One practical way to use WSL for monitoring-related tasks is to run an SSH server in it and use it for scripts or plugin execution. On modern WSL setups, services can be managed through systemd when it is enabled, which makes it easier to run SSH and other Linux services in a more standard way.
In many setups, WSL services are not exposed in exactly the same way as ordinary Windows services, which can be useful from a security perspective. However, this should not be treated as a security guarantee by itself: if you enable SSH inside WSL, restricting access and using key-based authentication remain sensible precautions.
Typical Debian-based WSL environments such as Ubuntu include many tools that would otherwise require separate installation on Windows. That includes Python, Perl and common shell environments, which makes WSL practical for lightweight scripting. In IPNetwork Monitor, one concrete example is using WSL-based Nagios plugins through a Script or Program monitor instead of building the same plugin chain natively on Windows.
Access host file system
Through the /mnt mount point, WSL can access the host’s Windows file system. For example, /mnt/c corresponds to drive C:, and other drives are exposed in a similar way.
By using the above mount point, a WSL process can access and inspect Windows-side files when needed for monitoring tasks. Host files can be scanned for change, and directories can be checked for size or other attributes without using more resource-intensive host interfaces such as WMI. At the same time, it is worth remembering that Microsoft recommends keeping Linux-worked files in the Linux file system for best performance and using cross-filesystem access deliberately where it makes sense.
Network-related tools
WSL provides access to many networking tools for analyzing services and endpoints. Some of them require explicit installation first (for example, dig, traceroute or whois), but after that they can be used in custom monitoring workflows for connectivity checks, certificate inspection and similar tasks.
For IPNetwork Monitor specifically, WSL can also be used as a practical execution environment for Nagios plugins. Your monitoring service account and execution method matter here: the product documentation notes that running WSL-based plugins directly via Bash requires the monitoring service to run under a Windows account with access to WSL, while SSH into WSL can be a better option when the service remains under SYSTEM. :contentReference[oaicite:6]{index=6}
Further WSL uses
WSL supports multiple Linux distributions, and the right choice depends on your task. For general-purpose scripting and package availability, Ubuntu remains a practical option; for more specialized security tooling, other distributions may be appropriate. If you need assistance, or wish to share your WSL experience, feel free to contact us.