DDoS protection forMU Online servers.
Anti-DDoS for MU Online private servers — survive Castle Siege and events.
TCP · connect 44405, game 55901, join 55557 (Season files — vary)
Why MU Online servers get attacked
Uptime is the whole game
MU Online servers get hit during Castle Siege and cash-shop events, precisely when the most players are logged in. The attacks target the connect and game servers to force a full disconnect. Maelstrom filters them at the edge so your event runs to the end.
Anycast, near your players
Your MU Online address is announced from every Cloudflare location at once — Manila and Singapore for most of South East Asia — so traffic enters at the nearest edge.
Your real IP stays hidden
Players connect to the address we give you on TCP. Your server's real IP stops being public, so it stops being a target.
Keep real player IPs
Turn on PROXY protocol and your MU Online server still logs each player's real IP for bans and analytics — no more seeing only the edge address.
Plans
Protect your MU Online server from $5.00/month
Card, one charge per month — no subscription, cancel any time.
Starter
A protected endpoint for one small server. Everything the bigger plan has, with a smaller allowance.
- 1 TCP/UDP application
- 1 backend origin
- 500 GB / month traffic
- 256+ Tbps Cloudflare network
- 330+ anycast PoPs worldwide
- L4 DDoS mitigation (Spectrum)
- 100% uptime SLA
Game Proxy
For solo private servers, indie game backends, and anything that has to stay reachable — anycast everywhere, not one region.
- 1 TCP/UDP application
- 1 backend origin
- 5 TB / month traffic
- 256+ Tbps Cloudflare network
- 330+ anycast PoPs worldwide
- L4 DDoS mitigation (Spectrum)
- 100% uptime SLA
- Extra ports $5 / month each
FAQ
MU Online protection, answered
What ports does MU Online use, and do you cover them?
MU Online runs on TCP — connect 44405, game 55901, join 55557 (Season files — vary). All of it sits behind our anycast edge; you point the service at us and we forward clean traffic to your origin.
Will my MU Online server still see players' real IPs?
Yes, if you turn on PROXY protocol at checkout and read it on your side. v1 works with TCP, Simple with UDP, v2 with both. Without it your server sees our edge address instead.
How fast can I get my MU Online server protected?
Minutes. Pay by card, give us your backend IP and port, and we hand you a public address to give your players. Mitigation is always-on from that moment.
Keep your MU Online server online
Protected in minutes. No hardware, no contract, from $5.00/month.
Choose a plan