Lineage 2 server anticheat

Protection and
Performance

Advanced multi-layer defense and optimizations for a more efficient game client.

AtlinGuard architectureLegitimate players pass through the AtlinGuard shield to the server, while malicious software is stopped.PLAYERSSERVER

Absolute Security

Cutting-edge technology against bots, cheats, packet hacks, clickers and exploits.

Adrenaline BotBLOCKED
L2HelperBLOCKED
L2TowerBLOCKED
L2WalkerBLOCKED
L2NetBLOCKED
L2PH/PHXBLOCKED
ZRangerBLOCKED
L2DivineBLOCKED
L2 Farm BotBLOCKED

Many other malicious programs

Far beyond protection...

Performance, compatibility and a better quality of life for your players.

01 / 13

LCID Fix

The game opens correctly in any region.

Fixes the locale error that prevents some Lineage 2 installations from starting under incompatible regional settings.

Next-Generation Architecture

Designed from scratch for maximum performance and zero friction.

Fail-open Architecture

If our infrastructure becomes unstable, your server never goes down. Login keeps working in a degraded contingency mode.

Flexible integration

Deployed through a transparent TCP Gateway. No changes needed to the server code.

Cross-server reputation

With this opt-in feature, a hardware ID flagged for cheating on one server is also treated as suspicious on another.

Modular architecture

Each feature runs independently. Turn on only what you need without compromising the protection or the other features.

Protection across the ages

Broad compatibility, from the classic Interlude to the most modern versions.

C1

Harbingers of War

Not tested
C2

Age of Splendor

Not tested
C3

Rise of Darkness

Not tested
C4

Scions of Destiny

Not tested
C5

Oath of Blood

Not tested
C6

Interlude

Compatible
T1

The Kamael

Compatible
T1.5

Hellbound

Compatible
T2.1

Gracia Part 1

Compatible
T2.2

Gracia Part 2

Compatible
T2.3

Gracia Final

Compatible
T2.4

Gracia Epilogue

Compatible
T2.5

Freya

Compatible
T2.6

High Five

Compatible
GD1

Goddess of Destruction

Compatible
GD1.5

Harmony

Compatible
GD2

Tauti

Compatible
GD2.5

Glory Days

Compatible
GD3

Lindvior

Compatible
GD3.5

Valiance

Compatible
EP1

Ertheia

Compatible
EP2

Infinite Odyssey

Compatible
EP2.5

Underground

Compatible
EP3

Helios

Compatible
EP4

Grand Crusade

Compatible
EP5

Salvation

Compatible
EP5B

Etina's Fate

Compatible
EP5.5

Fafurion

Compatible

Modern era

Classic

Compatible

Essence/Aden

Compatible

Main

Compatible
Operating systemWindows 10 and Windows 11
L2 Server architectureJava (L2J) and C++ (L2OFF)
AtlinEncrypt

You create.
You control.
You protect.

What makes your server unique deserves protection to match.

Select the system folder in your Lineage 2 installation and choose a protection level to generate tamper-resistant copies of your files.

.dat.ini.u
View documentation
AtlinEncrypt interface

A simple license for a robust solution.

The focus is keeping you protected, with clear costs.

  • Includes ongoing protection updates to counter the cheat tools currently in use.
  • Includes regular updates with new features.
  • Includes specialized technical support.
Promotion

AtlinGuard License

Starting at

$75
USDone-time payment
+ $27 /month
See Plans

Frequently Asked Questions

Do I need to change my server's source code?
No. Our transparent TCP gateway protects the server port without requiring you to edit or compile the server's source code. If you want to log connections by hardware ID in your database, you can add the HWID logging integration for L2J or L2OFF .
Does the protection block Adrenaline Premium?
Yes. That said, we are fully transparent: Adrenaline Premium has an active development team that charges a monthly fee to try to bypass defenses, and it will certainly work to try to bypass ours. In cybersecurity we call this "cat and mouse". Our promise is not an eternal, impassable wall, but a team dedicated to always protecting our clients against this and other threats.
What if your validation server goes down?
We operate on the Fail-open principle. If our servers go offline for any reason, your server detects the anomaly and enters a local degraded mode. This means it keeps accepting players. We absorb the outage, your business keeps running. AtlinGuard never prevents players from connecting.
What if false positives block legitimate players?
Our team works continuously to improve the detection mechanisms and minimize false positives. However, updates or new versions of third-party software running alongside the game may occasionally create incompatibilities and cause wrongful blocks. This is quite rare and can only happen to players who open several programs together with the game. In extreme cases, you can easily disable our protection temporarily from the web panel while we investigate.
What happens if my server exceeds my plan's player limit?
Exceeding the plan limit alone does not stop players from joining. We email you when usage reaches 80%, 95% and 100% of the limit. If mandatory upgrades are enabled for your subscription and your server exceeds the limit on three separate days in the same billing cycle, we issue an invoice for the next plan. Payment is due within 7 days.
Am I charged for months I don't use?
We do not charge for a service we do not provide. Before your subscription is due, we will send email reminders so you can renew. If payment is not made, the following conditions apply: after 7 days overdue, the services are suspended and the AtlinGuard protection stops working. After 30 days overdue, the subscription is automatically canceled and you will need a new subscription to use AtlinGuard again. No unexpected charges, no accumulated debt.
What is the "Extreme Protection" feature?
Extreme Protection is an additional, optional AtlinGuard security layer, designed to give strict control over DLLs and other binary modules loaded into the game process. When turned on, it restricts the loading of unauthorized modules, allowing only components recognized as trusted and the DLLs and binary modules you uploaded beforehand in the web panel. Because it applies a highly restrictive security policy, this level of protection can also affect legitimate software, such as tools used by streamers, overlays and apps that customize the game experience. That is why turning it on is optional and should be done with care. If you turn it on, you can follow the activity logs of this feature in your web panel.
Does AtlinGuard run in kernel mode (Ring 0)? Can it cause a blue screen?
No to both. AtlinGuard runs entirely in user mode and installs no drivers. Its architecture prevents AtlinGuard from causing a blue screen of death (BSOD). If a future threat requires kernel-level protection, we will update AtlinGuard promptly.
Do you sell my data or my players' data?
We do not sell data. Your players' data is used to protect your server and, as a rule, you decide how it is used. We process technical hardware identifiers, network address and integrity results; account names and crash reports are only included when you turn those features on. The details, including service providers and retention periods, are in the Privacy Policy.