AxonAuth

AxonAuth is a professional and lightweight authentication solution designed to secure your PaperMC server. This plugin ensures player security from the moment they first join, preventing unauthorized access and protecting administrators from account compromises.

Key Features Secure Authentication: A robust registration and login system utilizing strong SHA-256 password hashing with unique salts for every player.

Anti-Bot Protection: Custom GUI-based captchas triggered upon the first join, effectively blocking bots and preventing spam.

Limbo System: Unauthenticated players are teleported to a secure, isolated "Limbo" dimension, preventing them from interacting with the world or taking damage before logging in.

OP Security: An essential second layer of protection for administrators—an mandatory PIN-based (2FA) verification system for OP commands.

Account Control: Built-in IP-based account limiting to prevent multi-accounting and unauthorized access attempts.

Convenience: Supports 24-hour auto-login sessions, ensuring a smooth experience for returning players.

Commands /register <password> <confirm> — Create your account.

/login <password> — Log into your existing account.

/setpin <pin> / /pin <pin> — Set or verify your administrative 2FA PIN.

/auth <command> — Administrative tools (reload configuration, manage/reset player accounts).

AxonAuth is easy to configure and perfectly suited for SMP-style servers where stability and security are top priorities.