How to protect your MU Online server (anti-hack and security)
Shield your server against hacks, network attacks and SQL intrusions with these essential layers of protection.
MU Online server security isn't a single program — it's a set of layers. If one fails, the others hold. Here are the main ones.
Layer 1 — Client protection (anti-hack)
Anti-hack monitors the player's client to prevent cheats like speed hack, dupe and program injection. It runs alongside Main and blocks known tools.
Layer 2 — SQL security
The database is the server's heart. To protect it: strong sa password and a dedicated user for the app; never expose the SQL port to the internet; automatic backups, tested.
Layer 3 — Firewall and network
Open only the necessary ports (ConnectServer, GameServer, site) and block the rest. Consider DDoS protection if the server grows.
Layer 4 — Web panel and site
The server's website is often the entry point for attacks. Keep the system updated, use strong panel passwords and validate all form input.
Security checklist
- ✓Strong
sapassword and a dedicated SQL user - ✓SQL port closed to the internet
- ✓Automatic backup, tested
- ✓Anti-hack updated
- ✓Firewall opening only what's needed
- ✓Web panel updated with a strong password
Perguntas frequentes
Does anti-hack solve everything?
No. Anti-hack protects the client against cheating, but you also need to protect the server (SQL, firewall, web panel). Security is built in layers.
How do I prevent SQL intrusion?
Use a strong 'sa' password, a dedicated user with minimal permissions, and never expose the SQL port directly to the internet.