Self-hosted / open sourceNetwork & Firewall ManagementHeadquarters: SE

Clavister NetShield: sovereignty score and 8 European alternatives

Clavister NetShield is a family of high-capacity next-generation firewalls designed and developed in Sweden. The firewalls protect data centres and provide secure remote networking. Capabilities include BGP and OSPF routing, high availability with failover, IPsec VPN, intrusion prevention, SSL inspection, application recognition and carrier-grade NAT. Central management is done through the Clavister InControl console. NetShield is delivered as a hardware appliance, as a virtual machine for public and private clouds, and as a container for Kubernetes or Docker.

Clavister is headquartered in Örnsköldsvik, Sweden, and says it focuses on the public sector, energy, telecom and defence. The company is listed on a Stockholm exchange; the sources consulted name no foreign parent company. The software is not open source. Because NetShield runs in your own network or cloud environment, you keep control over configuration and traffic, and it is not a vendor-hosted service.

See the 8 European alternatives ↓Assess your stack with Clavister NetShield pre-selected

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Sovereignty score

80 / 1000 = high exposure
100 = sovereign

Jurisdiction SOV-2100
Headquartered in the EU: European law applies
Data residency SOV-3100
EU-only hosting
Cryptographic key sovereignty SOV-380
Closed source, but self-hostable: encryption keys and runtime under your own control
Freedom from lock-in SOV-640
Closed source: switching requires data migration
Source & runtime sovereignty SOV-4 · SOV-680
Closed source, but self-hostable on your own infrastructure

SOV codes: the matching objective in the European Commission's Cloud Sovereignty Framework. Official source

How the score is calculated

Facts and evidence

Last checked October 1, 2026

Headquarters	SE (EU)Verified by hand
Data hosting	Self-hosted, e.g. in EU (your choice)Verified by hand
Open-source	NoVerified by hand
GDPR-compliant	YesVendor-stated
Compliance documents	1 published, see belowVendor-stated
Hosting signal	SWIPNET - Tele2 Sverige AB, EU (SE)Technically measured
Category	Network & Firewall Management
Type	Product
Website	clavister.com ↗

The hosting signal shows the network that serves the vendor's website, often a CDN, and not necessarily where the service or your data is hosted. How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to Clavister NetShield

The European alternatives to Clavister NetShield come from our knowledge base of over 6,800 vendors. We only list vendors headquartered in the EU or the EEA; fully European-owned vendors rank before vendors with a foreign owner. For each alternative you see the country, the open-source status and a short description.

Score per alternative: 0 = high exposure, 100 = sovereign

41 European Network & Firewall Management vendors are in the catalogue. View the whole category · Submit an alternative · View category on the map

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Why digital sovereignty matters with Clavister NetShield

Clavister NetShield is headquartered in SE and therefore falls under European law: the GDPR, NIS2 and the Data Act. No foreign legislation can compel access to your data.

Clavister NetShield runs on infrastructure you choose and control yourself. You decide where the data lives, including fully within the EU if you want — this is not a fixed hosting choice made by the vendor.

Clavister NetShield is closed source, but you run the software yourself on your own infrastructure. The encryption keys and the runtime therefore stay under your own control, though you cannot audit or modify the source code. Ask about export options and open standards to limit software-level lock-in.

What this means for your organisation depends on your whole stack and context. The free assessment weighs Clavister NetShield together with your other vendors and gives a total score, a heatmap and the main risk drivers.

Frequently asked questions

What is the best European alternative to Clavister NetShield?

It depends on your use case. Strong EU alternatives to Clavister NetShield include Alcatel-Lucent Enterprise, Allegro Packets and Arelion. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to Clavister NetShield?

Yes. Open-source EU alternatives to Clavister NetShield include BIRD Internet Routing Daemon and Deciso OPNsense. These keep your data fully under your own control and let you self-host if you want to.

Is Clavister NetShield GDPR-compliant and where is the data hosted?

Clavister NetShield is headquartered in SE (EU) and hosts data in EU. That makes Clavister NetShield an EU-sovereign choice in its own right; the EU alternatives on this page are comparable European tools.

Details and sources

Verified by handHeadquarters, owner, hosting locations and licence have been checked by us against public sources. Free of charge and for every vendor, not a paid label. Nothing in this knowledge base is taken over automatically. Last checked on October 1, 2026.

Sources

Public sources used in the latest check of this record.

Compliance evidence

The links below point to the vendor's own public documents. We only record what we found: a missing link means "not found publicly", not "not compliant".

Security page / trust center: clavister.com/products/clavister-netshield/

Provenance of the links above:Vendor-stated

Links checked on September 21, 2026.

Cyber Resilience Act

Public signals that relate to the EU Cyber Resilience Act. They do not count towards the score. A missing line means "not found publicly".

Report a vulnerability: clavister.com/company/coordinated-disclosure-cvd/
Supported versions: clavister.com/info-hub/software-lifecycle/

For products in scope of the CRA, CE marking is required from 11 December 2027; this cannot be checked yet.

Checked on October 9, 2026. What is the Cyber Resilience Act?

Digital sovereignty in Network & Firewall Management

Network & Firewall Management: Central management of firewalls, switches and Wi-Fi, network access control (NAC), load balancing and DNS/DHCP/IPAM. In this category the choice of vendor determines who has legal access to your data, where that data lives and how easily you can switch later.

Also in this category

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