Here's how to connect to your Arma Reforger server and adjust the most important settings.

Connecting

Open the server page in the client area and click Start.
Wait until the status shows “running”. You can follow the progress in the Console tab.
Copy the address (IP:Port) at the top of the server page.
In Arma Reforger, open Multiplayer and search the server browser for your server name – or use Direct Join with the address. If the server has a password, enter it when joining.

Important settings

In the Startup variables tab:

Server Name (SERVER_NAME) – name in the server browser.
Server Password (SERVER_PASS) – password for joining; leave empty for an open server.
Admin Password (ADMIN_PASS) – for logging in as admin in the game.
Max Players (MAX_PLAYERS) – maximum number of players.
Scenario ID (SCENARIO_ID) – the scenario being played (default: Conflict/campaign). The server lists all valid IDs in the Console when it starts.
Visible in Server Browser (VISIBLE), Enable BattlEye (BATTLEYE), Disable Third Person (DISABLE_THIRD).

We write these values into the config.json file (Files tab) on start. Changes in the Startup variables tab take effect on the next restart.

Changing the scenario

The Scenario ID startup variable determines the scenario. Two common examples:

Conflict on Everon (default): {ECC61978EDCC2B5A}Missions/23_Campaign.conf
Game Master on Everon: {59AD59368755F41A}Missions/21_GM_Eden.conf

The server lists all available IDs, including those from installed mods, in the Console on start.

Adding mods

In config.json, mods are listed under game.mods, for example:

{ "modId": "mod ID", "name": "mod name" }

You find the modId on the mod's Workshop page. Separate multiple mods with commas. On the next start the server downloads them itself, and your friends get them automatically when joining.

With Xbox and PlayStation players

For crossplay, set "crossPlatform": true under game in config.json. Note: console players can only use mods that are approved for consoles.

Admin commands

After #login YourAdminPassword in chat, commands such as #kick, #ban and #restart are available.

Good to know

The portal generates the admin password automatically during setup. It is shown once at the top of the server page – please make a note of it. To change it: Startup variables tab (ADMIN_PASS). In the game, log in via chat with #login YourAdminPassword.
Add Workshop mods to config.json under game.mods. With Automatic Updates (AUTO_UPDATE) the server downloads game and mod updates itself on start.
The first start takes longer because the server files are downloaded and set up.

Arma Reforger: connect to and set up your server