FortiAuthenticator

Web · Linux · Self-hosted · API

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Freedom report

One barScore 6.7

Free tierNo free tier on record
Open codeNo open-source code on record
Runs widely2 of 6 device platforms
DocumentedPlans, terms and facts published

FortiAuthenticator is ranked #24 of 113 in authenticator apps on Freedom251. It runs on API, Linux, Self-hosted, Web.

FortiAuthenticator plans and pricing

All plans

FortiAuthenticator-VM Subscription Not published Term-based, per-user subscription; ordering guide lists FortiCare Elite Support as included. 100–999 users · 1,000–99,999 users · 100,000+ users fortinet.com · 4 Oct 2026

FortiAuthenticator-VM Perpetual Not published One-time purchase; support services are purchased separately. Base license supports 100 users · stackable upgrades available · HA nodes require separate licenses fortinet.com · 4 Oct 2026

FortiAuthenticator Cloud Not published User subscription; license is valid for one year and must be activated within one year after purchase. 100–499 users · 500–1,999 users · 2,000–9,999 users · 10,000+ users · FortiCare Premium Support included fortinet.com · 4 Oct 2026

Compared on authenticator apps

Deployment: hybrid
Supported factors: Password; FortiToken hardware; FortiToken Mobile; SMS; email; FIDO2 security keys/passkeys
App integration methods: RADIUS; TACACS+; LDAP; SAML; REST API; Fortinet Security Fabric
Adaptive access policies: Yes
Passwordless authentication: Yes
Device trust controls: Yes

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The record

Purpose: FortiAuthenticator provides identity and access management services for Fortinet products and third-party devices.
Authentication: It provides RADIUS, TACACS+, LDAP, and SAML authentication methods.
MFA: Two-factor authentication supports one-time passwords using FortiToken hardware, FortiToken Mobile, SMS, or email.
User identification: It can identify users through Active Directory, desktop clients, guest portal logon, RADIUS accounting, Kerberos, and a REST API.
Certificate management: It can create and sign digital certificates, including for use with FortiGate VPNs.
Integrations: It integrates with third-party RADIUS, LDAP, and SAML systems and offers a REST API for external provisioning systems.
SSO and federation: FortiAuthenticator can act as a SAML SSO identity provider or proxy and as an OIDC provider for single sign-on.
VM platforms: The ordering guide lists FortiAuthenticator-VM subscription and perpetual license options, with upgrades to expand VM user support beyond the 100-user base license.
Security: FortiAuthenticator encrypts its file system and uses AES256-CBC encryption for secrets that it needs to access in plaintext operations.
License limits: For VM licenses, the licensed user limit applies to local and remote user accounts and concurrent FSSO sessions, while other configuration-object limits are derived from the user limit.
Subscription dependency: A FortiAuthenticator-VM subscription requires internet access to update.fortiguard.net, and its services stop if license validation connectivity is lost for 30 days.
Support: FortiAuthenticator-VM perpetual licensing lists support contracts separately, while the ordering guide lists FortiCare Elite with VM subscriptions and FortiCare Premium with Cloud subscriptions.
Free demo: Fortinet offers a free product demo covering user identification, single sign-on, two-factor authentication, identity sources, authentication methods, and the self-service portal.

Where it ranks on Freedom251

Best Authenticator Apps in 2026#24 of 113
Best Multi-Factor Authentication Software in 2026#16 of 50

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Sources

docs.fortinet.com/document/fortiauthenticator/6.5.3/admin· checked 4 Oct 2026
docs.fortinet.com/document/fortiauthenticator/8.0.0/iam-c· checked 4 Oct 2026
fortinet.com/content/dam/fortinet/assets/data-sheets· checked 4 Oct 2026
docs.fortinet.com/document/fortiauthenticator/latest/rele· checked 4 Oct 2026
docs.fortinet.com/document/fortiauthenticator/latest/admi· checked 4 Oct 2026
fortinet.com/products/identity-access-management/for· checked 4 Oct 2026