Yes, it is possible to apply Multi-Factor Authentication (MFA) on self-hosted Ory Kratos. The knowledge sources provide information on configuring MFA for self-hosted Ory Kratos instances. According to the [Configure multi-factor authentication in Ory Kratos](https://www.ory.sh/docs/kratos/self-hosted/mfa) documentation, you can enable and configure various MFA methods in your self-hosted Kratos instance. The available MFA methods include: 1. WebAuthn (FIDO2) 2. Time-based One-Time Passwords (TOTP) 3. Lookup Secrets (Recovery Codes) To enable these MFA methods, you need to adjust the configuration file of your self-hosted Kratos instance. For example, to enable TOTP, you would add the following to your configuration file:

yaml selfservice:   methods:     totp:       config:         issuer: <http://ExampleIssuerForSelfHosted.com|ExampleIssuerForSelfHosted.com>       enabled: true

Similarly, you can enable WebAuthn and Lookup Secrets by adding their respective configurations to the

selfservice.methods

section of your Kratos configuration file. It's important to note that while MFA can be configured for self-hosted Ory Kratos, some advanced features like SMS-based MFA might require additional setup or integration with external services. For more detailed information on configuring specific MFA methods, you can refer to the following documentation: - [Time-based one-time passwords (TOTP)](https://www.ory.sh/docs/kratos/mfa/totp) - [WebAuthn and FIDO2 (YubiKey)](https://www.ory.sh/docs/kratos/mfa/webauthn-fido-yubikey) - [Lookup Secrets (Recovery Codes)](https://www.ory.sh/docs/kratos/mfa/lookup-secrets) These guides provide step-by-step instructions for enabling and configuring each MFA method in your self-hosted Ory Kratos instance.