Arma Reforger offers a realistic military sandbox that truly shines on a dedicated server. With your own server you control the mission, the mods and who gets to play. This guide walks you through every step to get your Arma Reforger server up and running.
Minimum specifications
An Arma Reforger dedicated server is fairly demanding. For a 32-player server you need at least:
- 4 CPU cores (preferably high clock speed)
- 8 GB RAM (16 GB recommended for more than 48 players)
- 15 GB free disk space for the base installation
- A stable internet connection with at least 10 Mbit/s upload
- Windows or Linux
The Enfusion engine demands considerable processing power when large numbers of players and AI units are active. If you plan scenarios with heavy AI, budget extra RAM and CPU.
Installation via SteamCMD
The fastest way to install the server is through SteamCMD. Install SteamCMD on your server, log in as anonymous and run:
app_update 1874900 validateThis downloads the Arma Reforger Dedicated Server. After the installation you will find the startup file in the server's root directory.
Basic configuration
The server configuration lives in a JSON file. Key settings to configure:
- Server name: the name players see in the server browser.
- Max players: default 64, but adjust based on your hardware.
- Scenario: choose which scenario (mission) the server runs. The default is Conflict, the large PvP mode on Everon.
- Password: optional, to keep the server private for your group.
- Ports: the server uses UDP port 2001 for the game and UDP port 17777 for RCON. Make sure these ports are open in your firewall.
Installing mods
Arma Reforger supports mods via the Workshop. Add mods to the server configuration by including their mod ID in the JSON file under the mods block. The server downloads the mods automatically on startup. Players who connect receive a prompt to download any missing mods.
Keep in mind that mods can affect stability. Test new mods on an empty server before putting them into production, and keep the mod count manageable since each mod increases memory usage.
Management and monitoring
Arma Reforger supports RCON for remote server management. You can send commands without being in the game: kick players, restart the mission or change settings. Configure the RCON password in your server config and use any RCON client.
Schedule regular restarts as well. The Enfusion engine can accumulate memory over long sessions, especially with mods. A restart every 6 to 12 hours keeps performance stable.
How much RAM do I need for an Arma Reforger server?
For a server with up to 32 players, 8 GB RAM is a solid starting point. With more than 48 players or when using multiple mods and AI scenarios, 16 GB is recommended. Memory usage grows the longer the session runs, so plan some headroom above the minimum.
Can I use mods on a dedicated server?
Yes, Arma Reforger supports mods on dedicated servers via the Workshop. Add the mod IDs to your server configuration and the server downloads them automatically. Players who connect are asked to install the same mods. Not all mods are server-compatible, so check the mod description before adding them.
Does Arma Reforger run on Linux?
Yes, Bohemia Interactive provides a Linux version of the dedicated server. Installation via SteamCMD works the same way as on Windows. Performance is comparable. On a VPS or dedicated server, run the server in a screen or tmux session so it keeps running after you close the SSH connection.
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