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The Nervous System: server.cfg

The server.cfg file is the primary configuration entry point for the Arma 3 Dedicated Server. It defines your server’s public identity, administrative security, networking protocols, and the mission rotation cycle. A single syntax error here can prevent the server from booting.
Reading TimeDifficultyLast Updated
6 minutesIntermediateJanuary 2026

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Essential Parameters

Below are the critical lines required for a stable MilSim environment: 
// Identity
hostname = "FREAKHOSTING | My Milsim Unit";
password = "";              // Leave empty for Public, fill for Private.
passwordAdmin = "SecretPW"; // Login via chat command: #login SecretPW

// Security & Networking
maxPlayers = 64;
persistent = 1;             // 1 = Application stays running when empty.
BattlEye = 1;               // 1 = Enable Anti-Cheat (Required for public listing).
verifySignatures = 2;       // 2 = V2 Mod Verification (Strict).

// Voice (VON)
disableVoN = 0;             // 0 = Voice Chat Enabled.
vonCodecQuality = 20;       // Max audio quality.

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Mission Rotation

This section tells the server which .pbo file to load from the /mpmissions/ folder. 
class Missions
{
    class MyMainOp
    {
        template = "Hearts_and_Minds.Altis"; // File: Hearts_and_Minds.Altis.pbo
        difficulty = "Custom";               // Must match a class in your Profile.
    };
};
If you list multiple missions, the server will cycle through them as each one ends.

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Last Updated: January 2026 | Arma 3: Config syntax verified.