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Open-source solutions for resilient IT
Digital sovereignty isn’t just a buzzword; it starts with the question of how much control organisations retain over their own IT. Those who use centralised systems but cannot audit them, operate them independently or develop them further are creating long-term dependency.
Open-source solutions make a decisive difference here: source code remains transparent, standards remain open, and data and processes remain interoperable. This creates greater freedom of action, greater traceability and greater resilience against economic, technical or geopolitical dependencies.
SerNet follows a clear approach: open source where possible – proprietary where necessary. After all, not every requirement can be meaningfully addressed in a dogmatic manner. But wherever openness brings genuine benefits, it strengthens digital sovereignty in very concrete terms: through auditability, lower lock-in risks, better integration capabilities and the ability to operate and further develop systems in one’s own interests. This is precisely why open source plays a central role at SerNet.
This is evident in several areas of IT – what matters is not simply the product list, but the common denominator: open, verifiable and sustainable technologies in strategically important IT layers.
Building blocks for sovereign IT infrastructures
For SerNet, digital sovereignty does not mean developing everything in-house. It means consciously reducing critical dependencies, favouring open standards and using technologies that are transparent, integrable and future-proof. Open source is not an end in itself. But it is often the best foundation for greater security, greater flexibility and greater technological independence – which is why we work with these solutions, amongst others:
Proxmox VE und Proxmox Backup Server
For virtualisation and data backup, SerNet relies on Proxmox as open-source solution in a particularly critical area of IT. This ensures transparency regarding the platform used, reduces dependence on proprietary licensing and vendor-specific requirements, and gives organisations greater flexibility in the operation, expansion and further development of their infrastructure.
PacketFence
When it comes to network access control (NAC), SerNet also relies on an open solution with PacketFence. This is an advantage, particularly in heterogeneous environments: the technology remains transparent, integrable and flexible to use, without being unnecessarily tied to closed platform ecosystems.
Greenbone
When it comes to vulnerability management, SerNet relies on Greenbone, amongst other solutions. The key factor here is the open technological basis: not a black box, but a solution that remains verifiable, can be operated under controlled conditions, and is therefore better suited to an IT infrastructure that needs to remain operational in the long term.
OpenSource ISMS-Tool
With verinice, SerNet is developing its own open-source product for information security, data protection and compliance. Openness is not merely a technical feature here, but an integral part of the product’s approach: with transparent development, open source code and the ability to maintain control over data and processes in the long term.
Samba and SAMBA+
With Samba and the SAMBA+ packages built upon it, SerNet relies on an open foundation for interoperability, identity and access management, and Active Directory-based infrastructures. Open protocols, high integrability and reduced dependence on closed system environments are key strengths here. Furthermore, SerNet not only deploys and supports solutions in this environment, but also develops them in-house.
