Defguard is an enterprise-grade open-source VPN solution built with the highest security standards in mind. It provides the world’s only multi-factor authentication (MFA) for WireGuard VPN connections, using either its built-in SSO (with TOTP, biometrics, etc.) or external SSO providers such as Google, Microsoft, Active Directory/LDAP, Okta, JumpCloud or any other OpenID Connect Provider.