# LinOTP

LinOTP is an open-source two-factor authentication server that manages one-time passwords for user logins. It is open source and self-hosted, installable on Docker Hub and Unraid.

Canonical page: https://ourlocalhost.com/app/258/linotp

## Description

LinOTP is an open-source two-factor authentication server that manages one-time passwords for user logins. It supports Open Authentication (OATH) standards such as hash-based message authentication code (HMAC) and time-based HMAC, and it can be extended with custom challenge-response, Quick Response (QR) code, and push-message tokens. System administrators use LinOTP to provide a modular, self-hosted authentication option instead of relying only on vendor authenticator apps.

## Platform availability

Available on 1 of 9 platforms: Unraid.

## Health score

65/100 (Good), based on 4 of 4 factors.
- Maintained: 100 (last commit 15 days ago)
- Popular: 55 (550 GitHub stars)
- Easy to install: 35 (1 install platform, install notes, Docker image)
- Light to run: 30 (4 GB minimum RAM)

## Links

- Docker Hub: https://hub.docker.com/r/linotp/linotp
- Unraid: https://ca.unraid.net/apps/linotp-1fgaeny0071di2?q=LinOTP
- GitHub: https://github.com/LinOTP/LinOTP
- Documentation: https://linotp.org/doc/3.4.4/part-installation/server-installation/sva_installer_offline.html
- Official website: https://linotp.org

## Common questions

### What settings should I change before running LinOTP in production?

Set a strong LINOTP_ADMIN_PASSWORD and LINOTP_SESSION_COOKIE_SECURE=true, and configure SSL/TLS termination with a reverse proxy. Use persistent volumes for /data, /cache, and the database.

### Can LinOTP use a hardware security module?

Yes, LinOTP offers PKCS11/HSM support for hardware security modules.

### Can LinOTP be used for Windows logon?

The LinOTP vendor provides a credential provider that enables Windows logon with OTP.

### Does LinOTP log authentication and admin actions?

LinOTP provides a signed audit log that records authentications and management actions.

### Why does LinOTP report 'Access denied for user root @ localhost' during Debian installation?

This can occur during installation or upgrade of a Debian package if the SQL user entered did not exist yet.

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Source: Our Local Host (https://ourlocalhost.com/app/258/linotp), the self-hosted and open-source app directory.