rFactor 2 Dedicated Server: multiplayer.json & ModDev Guide
Data Verified: May 2026Complete rFactor 2 dedicated server reference. Configure multiplayer.json, player.json, mod packages (.rfmod), Steam Workshop subscriptions, admin commands, and size hardware for stable league endurance races.
Commands & configuration database
| Command | Default Value | Description | Action |
|---|---|---|---|
Server Name | rFactor 2 Server | Public server name. | |
Server Password | (empty) | Password required to join. | |
Admin Password | (empty) | Used for web admin and in-game /admin. | |
Maximum Vehicles | 20 | Concurrent driver cap. | |
Game Description | current_mod.rfm | Active mod/series file. | |
Track Filter | (empty) | Track folder to load on launch. | |
PrivateSession | 0 | If 1, server is hidden from the public lobby. | |
DownloadCustomSkins | true | Allow clients to pull custom liveries from the server. |
Showing 8 of 8 configuration parameters.
| Command | Default Value | Description | Action |
|---|---|---|---|
/admin <pass> | N/A | Authenticates the caller as admin in chat. | |
/kick <name> | N/A | Kicks the named driver. | |
/nextsession | N/A | Advances to the next session. | |
/restartrace | N/A | Restarts the current race. | |
/say <msg> | N/A | Server-wide chat broadcast. |
Showing 5 of 5 admin console commands.
Recommended hosting providers
Vetted hosts with one-click rFactor 2 installs. Links are affiliate placeholders and marked rel="sponsored".
Hardware specifications
Sizing guidance for self-hosting a rFactor 2 dedicated server.
| Tier | Specification | Use case |
|---|---|---|
| Small (10-16 cars) | 4 GB RAM / 2-core 4.0 GHz+ CPU | Sprint and practice. |
| Standard (20-24 cars) | 8 GB RAM / 4-core 4.5 GHz+ CPU / SSD | Mid-size leagues; tyre + weather sim is CPU-bound. |
| Endurance (32+ cars) | 16 GB RAM / 6-core 5.0 GHz+ Dedicated Node / NVMe | Large grids with damage + real-road; physics tick demands high clock. |
Default file locations
Default installation paths for rFactor 2 dedicated servers installed via SteamCMD.
Windows
C:\rFactor2DS\UserData\player\Linux
Server is Windows-only (run via Proton/Wine on Linux).Pro-Tip: Always stop the server completely before editing configuration files, or the server will overwrite your changes upon restart.
Default ports for port forwarding
Open these on your router and firewall before exposing the server to the internet.
| Service | Protocol | Port |
|---|---|---|
| Game Port | UDP | 54297 |
| Query Port | UDP | 54298-54300 |
| RCON / Telnet | TCP | 64297 (HTTP admin) |
Frequently asked questions
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