Protect Your Server
Usage-Based Security

The only Anti-Cheat for Ragnarok Online that intelligently distinguishes between passive tools and active cheating. Secure your economy without punishing players for multitasking.

Get Protected View Features

Why Server Owners Choose Sentinel

Privacy First

We target known cheat tools (WPE, Cheat Engine) by signature. We NEVER scan browser tabs or personal documents. Your players' trust is paramount.

Zero-Config

No complex scripts. The server automatically "learns" the correct game version from your Admin Client. Log in once, and you're secure.

Hardware Lock

Bans are tied to unique hardware signatures (HWID), not just IP addresses. Keep toxic players out permanently with one click.

Startup Asset Verification

Integrity Checks on all GRF archives to prevent modified game files.

Auto-Update

Push security updates silently. The client automatically downloads new files on launch. Zero downtime for maintenance.

Web Dashboard

Full SQL logging. View every connection, audit bans, and analyze security threats from a sleek PHP web interface.

Plug and Play

1

Install

Drop files into your game folder and add one NPC script to your server. No source edits needed.

2

Secure

The client validates itself with the server on every login.

3

Play

Cheaters are blocked instantly. Legit players notice nothing.

Key Features

Hardware Lock (HWID)

Bans are tied to unique hardware signatures. Toxic players are gone forever with one click—VPNs won't save them.

Anti-VM

Prevent players from running your game from Virtual Machines to exploit zeny. Detects and blocks virtualized environments instantly.

Asset Verification

Validates your .GRF archives on every startup. Players cannot modify sprites to see through walls or remove effects.

Memory Integrity

Strips read/write permissions from the game process. Neutralizes memory scanners like Cheat Engine without needing invasive kernel drivers.

Sentinel Watchtower

Connect Discord to Sentinel for real-time alerts. Get instant notifications for bans and security triggers directly in your admin channel.

Advanced Heuristics

Detects inhuman behavior patterns and macros without needing invasive monitoring. Utilizing stochastic timing analysis to disrupt automated inputs.

Whitelist Mode

Enforce strict "Invite Only" access. Lock your server to specific Account IDs for Closed Beta testing, maintenance, or private VIP access.

Trusted Apps

Advanced integration allows Server Administrators to securely whitelist custom process hashes, eliminating false positives for private tools without lowering global security standards.

Active Integrity Scanning

Silently scans critical Windows APIs in real-time. If a cheat tool attempts to hook functions for Packet Edit or injection, it is neutralized.

Plug & Play

Auto-configures its own database tables. Just drop the files in, add one script line, and you're secure.

Live Security Dashboard

View every connection, analyze blocked threats, and audit bans from a sleek, mobile-responsive web interface.

Cloud-Synchronized Heartbeat

Utilizes an authoritative cloud-sync protocol to verify session validity in real-time. Neutralizes packet manipulation and maintains a secure, persistent connection between the client and server logic.

Fair Pricing for Every Server

Yearly Access

$149

Commit to stability and save big.

  • Admin Control Panel
  • Pro Addons
  • Automatic Cloud Updates
  • Pro-rated Upgrade
  • Premium Discord Support
Payments are processed via Bitcoin (BTC). To use other payment methods, please open a ticket on our Discord Server.