Defguard

This company provides a self-hosted, open-source security platform that integrates Multi-Factor Authentication (MFA) and Identity and Access Management (IAM) directly into the WireGuard VPN protocol. The software enables organizations to manage zero-trust firewall policies, device posture validation, and directory synchronization across Linux, BSD, and Windows environments. It serves enterprise clients in regulated industries such as defense, banking, healthcare, and manufacturing that require data sovereignty and compliance with ISO27001, NIS2, and GDPR.