In a context where cyber threats are constantly evolving, adopting a layered security approach becomes imperative. For many organizations, this means disconnecting certain critical systems from the Internet. But then arises the question of keeping them up to date. This is where Proxmox Offline Mirror (Proxmox offline mirror) comes in—a solution that reconciles security, compliance, and efficiency.
A tool designed for cybersecurity adapted to every context
Proxmox Offline Mirror allows you to create a local mirror of Proxmox and Debian APT repositories, then generate a transfer medium (USB key, external hard drive, local network share) containing the necessary updates. This medium can then be used to update completely isolated (air-gapped) systems, while respecting the requirements specific to their threat model.
Because cybersecurity is not about one-size-fits-all solutions: each organization must identify its potential threats and adapt its tools accordingly. Proxmox Offline Mirror fits into this logic—it acts as a secure intermediary between the connected world and disconnected critical systems.
Features designed for efficiency and reliability
The tool relies on two binaries:
proxmox-offline-mirror: creation and management of mirrors.proxmox-offline-mirror-helper: applying updates on target systems and assisting with configuration.
It takes into account three key concepts:
- Keys: to manage Proxmox subscriptions.
- Mirrors: to create local snapshots of repositories.
- Media: to transport these snapshots to isolated systems.
Snapshots use hardlinks, optimizing disk space, while an integrated mechanism removes obsolete files (garbage collection).
▶ Let’s talk about a security strategy adapted to your organizational reality
An example of application in a healthcare institution
Take the example of a healthcare institution in Quebec whose Proxmox VE servers are isolated for patient data protection reasons. With Proxmox Offline Mirror, updates can be prepared on a connected workstation, transferred via secure media, and applied locally without exposing servers to the Internet—a coherent approach with current standards and adapted to the organization’s threat model.
Support in French and English… locally
And for Canadian francophone (or bilingual) organizations, another advantage is added: technical support is available locally. In addition to official Proxmox assistance in English, Le Goût du libre, a Silver Proxmox partner based in Quebec, offers professional and personalized support in French and English, adapted to your realities.
Whether you are a healthcare institution, a public organization, or a company operating in a sector with high security requirements, you can rely on expertise that is close, competent, and committed to open source.
▶ Get trusted local support with a Silver Proxmox partner in Quebec
Proxmox Offline Mirror represents much more than a simple utility: it is a strategic piece in the security architecture of sensitive environments. It provides a concrete response to offline update challenges, while integrating into a flexible approach according to each structure’s risk profile. And thanks to local support in French in Quebec and Canada, it has never been easier to combine security, autonomy, and compliance.
Fabián discovered computers at age 11 and never stopped exploring how technology can empower people.
With formal training in computer science and decades of experience, he became a pioneer of GNU/Linux in Québec and co‑founded FACIL to defend free and open technologies.
Today, his energy also fuels projects in education and the environment, guided by a simple belief: technology should serve everyone.