
Serverauth Mod
A purely server-side Fabric login module, where the administrator has full control over accounts. Forced login, automatic binding, AFK timeout, and position restoration provide a complete securi 纯服务端 Fabric 登录模组,管理员完全掌控账号。强制登录、自动绑定、挂机超时,为服务器提供完整的安全验证体系
Screenshots

About this Mod
ServerAuth Login Module —— Feature Overview
This is a pure server-side Fabric mod (1.20.x) that provides your server with a comprehensive security verification system, including forced login, automatic binding, session management, and anti-idling measures.
Core Design Principles
· Full admin control over accounts: Only OP (permission level 4) can create/delete accounts; regular
players cannot register themselves.
· Mandatory Login Verification: Unauthenticated players cannot move or interact (teleported to void
space with black screen hover).
· Device-Bound Auto-Login: Players may opt to bind their account to their device's UUID for automatic
login upon future server access.
· Login Location Restoration: Upon successful login, players are teleported back to their initial spawn point.
· Dual Timeout Mechanism:
· Idle Timeout: Forced logout after a set number of minutes of inactivity post-login, requiring re-login.
· Auto-login validity period: After binding an account, auto-login becomes invalid if no login occurs within a set number of days. Manual password entry is required for subsequent logins.
· Add 3 languages, only administrators can use /change english , /change chinese and /change Spanish to switch between Chinese or English or Spanish, the default language for mods is Chinese
Player Experience (Player-facing features)
- First Server Entry
· Upon entering the game, players find themselves in the Void (black screen), suspended, and unable to move.
· A prompt will appear in the chat bar instructing players to use the /login command to log in. - Login Command
/login
· Enter the username and password provided by the administrator to log in.
· After successful login:
· Players will be instantly teleported back to their entry location (spawn point or coordinates at entry).
· The game mode will switch to Survival Mode, allowing normal gameplay. - Bind Device (Auto-Login)
/login-b or
/login--bind
· Adding the -b parameter during login permanently binds the account to the player's UUID (unique identifier for verified accounts).
· The player will automatically log in upon subsequent server entries without any action required. - Manual Logout
/logout
· Players can manually log out to return to the void state.
Unbind Device
/unbind
· Use this command to unbind the current account from the device (e.g., when switching players).
· After unbinding, manual login is required for the next entry.
Administrator Functions (OP Exclusive)
All admin commands begin with /auth.
Command Description Example
/auth create
/auth create
/auth delete
/auth unbind
/auth list List all accounts and binding status
/auth kickall Kick all unlogged-in players (clear the server)
⚠️ Note: Before using /auth commands, administrators must grant themselves OP permissions via the console or other methods (op [playername]).
Configurable Options (config/serverauth/config.json)
The configuration file is automatically generated upon server startup. You can modify and save it at any time without restarting (the mod periodically re-reads settings).
json
{
“requireLogin”: true, // Require login (recommended to keep true)
“kickOnFailedLogin”: true, // Kick player on login failure
“maxLoginAttempts”: 3, // Maximum login attempts (counting not yet implemented)
“enableSession”: true, // Enable session functionality
“sessionTimeout”: 30, // Reserved field, unused
“sessionTimeoutMinutes”: 30, // Idle timeout (minutes). Forced logout after inactivity exceeding this duration (0=no timeout)
“autoLoginExpiryDays”: 30 // Auto-login validity period (days). Accounts bound for longer than this period require manual password entry upon login (0=permanent validity)
· To prevent idle timeouts: “sessionTimeoutMinutes”: 0
· To enable permanent account binding: “autoLoginExpiryDays”: 0
**All account information (including password hashes, bound UUIDs, creation times) is stored in:
[server root directory]/config/serverauth/accounts.json
· Password storage: Uses SHA-256 hashing, which cannot be reverse-engineered.
· Binding relationships: Based on Minecraft UUIDs (fixed for official accounts; generated from player names in offline mode).
**
中文:
ServerAuth 登录模组 —— 功能详解
这是一个 纯服务端 Fabric 模组(1.20.x),为你的服务器提供了强制登录、自动绑定、会话管理、防挂机等完整的安全验证体系。
核心设计理念
· 管理员完全控制账号:只有 OP(权限等级4)可以创建/删除账号,普通玩家无法自行注册。
· 强制登录验证:未登录的玩家无法移动、无法交互(被传送到虚空,黑屏悬浮)。
· 绑定设备自动登录:玩家登录时可选择将账号与自己的 UUID 绑定,以后进入服务器自动登录。
· 登录位置恢复:登录成功后,玩家会被传送回刚进服时的位置。
· 双重超时机制:
· 在线挂机超时:登录后超过设定分钟无操作,强制登出,需重新登录。
· 自动登录有效期:绑定账号后,若超过设定天数未登录,自动登录失效,下次需手动输入密码。
·添加3种语言,只有管理员可用/change english 或者 /change chinese 或者 /change Spanish 来回切换中文,英文或者西班牙语,mod初始语言是中文
玩家体验(玩家视角的功能)
1.首次进入服务器
· 进入游戏后,玩家会发现自己处于 虚空(黑屏)、悬浮、无法移动 的状态。
· 聊天栏会显示提示信息,要求使用 /login 命令登录。
2.登录命令
/login <账号> <密码>
· 输入管理员发放的账号密码即可登录。
· 登录成功后:
· 瞬间传送回进入服务器时的位置(出生点或进入时的坐标)。
· 游戏模式切换为生存模式,可以正常游玩。
3.绑定设备(自动登录)
/login <账号> <密码> -b或
/login <账号> <密码> --bind
· 登录时添加 -b 参数,会将当前账号与玩家的 UUID(正版账号唯一标识) 永久绑定。
· 以后该玩家每次进入服务器都会自动登录,无需任何操作。
4.手动登出
/logout
· 玩家可以主动登出,回到虚空状态。
解绑设备
/unbind
· 如果玩家想要解除当前账号与设备的绑定(例如换人玩),可以使用此命令。
· 解绑后,下次进入需要手动登录。
管理员功能(OP专用)
所有管理员命令都以 /auth 开头。
命令 说明 示例
/auth create <账号> <密码> 创建普通玩家账号
/auth create <账号> <密码> -admin 创建管理员账号(拥有OP权限)
/auth delete <账号> 删除指定账号
/auth unbind <账号> 强制解绑指定账号(玩家换设备时用)
/auth list 列出所有账号及绑定状态
/auth kickall 踢出所有未登录玩家(清场)
⚠️ 注意:使用 /auth 命令前,管理员必须在控制台或通过其他方式给自己 OP 权限(op 玩家名)。
可配置选项(config/serverauth/config.json)
服务器启动后自动生成配置文件,你可以随时修改并保存,无需重启(模组会定期重新读取)。
json
{
"requireLogin": true, // 是否强制登录(建议保持true)
"kickOnFailedLogin": true, // 登录失败是否踢出玩家
"maxLoginAttempts": 3, // 最大登录尝试次数(暂未实现计数)
"enableSession": true, // 是否启用会话功能
"sessionTimeout": 30, // 保留字段,未使用
"sessionTimeoutMinutes": 30, // 在线挂机超时(分钟),超过此时间无操作强制登出(0=永不超时)
"autoLoginExpiryDays": 30 // 自动登录有效期(天),绑定账号后超过此天数未登录需手动输密码(0=永久有效)
· 想让玩家永不挂机超时:"sessionTimeoutMinutes": 0
· 想让绑定账号永久有效:"autoLoginExpiryDays": 0
所有账号信息(含密码哈希、绑定UUID、创建时间)都保存在:
[服务器根目录]/config/serverauth/accounts.json
· 密码存储:使用 SHA-256 哈希,无法逆向破解。
· 绑定关系:基于 Minecraft UUID(正版账号固定,离线模式由玩家名生成)
Available Versions
How to Install Serverauth Mod on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.20.6).
Install Mod
Open the mod browser in the dashboard and search for "Serverauth Mod". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.20.6, 1.20.5, 1.20.4 (+4 more)
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Serverauth Mod server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.20.6). You can switch loaders with one click in the panel.
Is Serverauth Mod compatible with fabric?
Serverauth Mod officially supports fabric for Minecraft 1.20.6, 1.20.5, 1.20.4. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Serverauth Mod – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Serverauth Mod consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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