Question

How to Host a Server on Arma 3: Step-by-Step Guide

Posted on by William Zheng

Ever wished you could play Arma 3 with friends on your own terms, customizing every mission and setting? Hosting your own server unlocks an entirely new level of strategy, creativity, and community.

Knowing how to set up and manage a server puts you firmly in control—essential for groups wanting a seamless, private, or custom gaming experience. This guide walks you through discovering what you need, prepping your server, and launching your sessions, with insider tips for smooth gameplay and fewer headaches.

Related Video

How to Host a Server on Arma 3: A Complete Step-by-Step Guide

Hosting your own Arma 3 server is a great way to enjoy customized, uninterrupted play sessions with friends or the broader Arma 3 community. Whether you want to create custom missions, manage mods, or simply ensure a reliable environment for team play, running your own server puts you in full control. Let’s break down everything you need to know—from the basics to advanced tips—to get your Arma 3 server up and running smoothly.

What Does it Mean to Host an Arma 3 Server?

When you host an Arma 3 server, you operate a digital space where players can join and play together. This can take two primary forms:

  • Listen Server: You host the game from within the main Arma 3 client on your own computer. This is the quickest approach for casual play with friends.
  • Dedicated Server: You set up a separate application to host the game, which doesn’t require your main game client to be open. This is more stable and scalable, especially for larger groups or persistent communities.


How to Host an Arma 3 Server for Friends 2025 - linuxbuz.com - host a server on arma 3

Step-by-Step: Setting Up Your Arma 3 Server

Let’s focus on the dedicated server approach, as it’s the most popular and robust option for serious play and modding.


How to host in multiplayer & play w/ friends - Steam Community - host a server on arma 3

1. Prepare Your System

Recommended System Requirements:

  • CPU: Quad-core processor or better
  • RAM: At least 4 GB free (more is better, especially with mods and many players)
  • Storage: 50 GB SSD or HDD (SSD preferred for faster loading)

  • Internet: Stable wired connection with at least 10 Mbps upload speed

  • Tip: A dedicated machine is ideal, but you can also use a Virtual Private Server (VPS) or a gaming server rental if you prefer not to host from home.*

2. Download and Install Arma 3 Server Files


How do i host my own server? :: Arma 3 General Discussions - host a server on arma 3

You don’t need to buy Arma 3 again for a server! Instead, use the Arma 3 Dedicated Server package.

To install:

  1. Install SteamCMD: This is Valve’s tool for downloading game server files.
  2. Download Arma 3 Server via SteamCMD:
  3. Open SteamCMD.
  4. Type these commands (replace C:\arma3server with your desired installation directory):
    login anonymous
    force_install_dir C:\arma3server
    app_update 233780 validate
    quit
  5. Prepare the Server Files: Once downloaded, the server folder will contain all necessary files.

3. Configure Your Server

Proper configuration ensures your server runs the way you want.

Edit Server Config Files

  • The main configuration file is server.cfg.
  • Key settings you can adjust:
  • Server Name
  • Password/Private Slots
  • Max Player Count
  • Mission Rotation
  • Admin Controls
  • Example section from server.cfg:
    hostname = "My Arma 3 Server";
    password = "optionalpassword";
    maxPlayers = 20;

Ports and Firewall Settings

  • Default ports: 2302–2305 UDP must be open on your router for Arma 3 to function.
  • Open these ports using your router’s administration page.
  • Don’t forget to allow the Arma 3 server through your computer’s firewall as well!


Arma 3 Server: Requirements and Tutorial - IONOS - host a server on arma 3

4. Install Missions and Mods

Custom gameplay comes from installing new missions or mods.

  • Placing Missions: Place your .pbo mission files into the mpmissions folder inside your server directory.
  • Using Mods: Add your mods to the @modname folders and launch the server with additional startup parameters, like:
    -mod=@CBA_A3;@CustomMod
  • Make sure all players have the required mods to avoid connection issues!

5. Start the Server

Running the server is as simple as running a command (Windows users typically use a batch file):

arma3server_x64.exe -config=server.cfg -mod=@CBA_A3;@CustomMod
  • Replace mod names and config paths as necessary.
  • The server console will open, and your server will begin broadcasting on the Arma 3 multiplayer browser.

6. Invite Friends and Enjoy!

Share your public IP address (or domain if you have one) with your friends. They can find your server in the Arma 3 in-game browser or connect directly through IP.

  • If your server is password-protected, give your friends the password you set in server.cfg.*

The Benefits of Hosting Your Own Arma 3 Server

Hosting isn’t just about control—it unlocks a variety of possibilities:

  • Customization: Run missions, mods, and scripts of your choice.
  • Stability: Dedicated resources prevent lag and crashes.
  • Privacy: Play with friends only or open your server to the public.
  • Administration: Kick unwanted players, organize long-term campaigns, and fine-tune every aspect of gameplay.

Challenges and What to Watch Out For

While hosting is rewarding, be prepared for some common obstacles:

  • Network Issues: Home connections may have limited upload speeds or restrictive ISP rules. Port forwarding can be tricky for beginners.
  • Performance: Running a server and playing on the same PC may cause lag. A separate machine or hosted service is recommended for 10+ players or heavy mods.
  • Maintenance: You’ll need to update your server after Arma 3 receives patches.
  • Security: Running a public server requires vigilance against cheaters and trolls. Enable admin tools and check official guides for further protections.

Practical Tips and Best Practices

Get the most out of your server with these expert tips:

  • Keep Your Mods Updated: Outdated mods can cause crashes or compatibility issues.
  • Monitor Performance: Use server monitoring tools or Windows Task Manager to ensure CPU and RAM usage stay in check.
  • Use Headless Clients: For large-scale missions, introducing ‘headless clients’ can help distribute AI workload and improve performance.
  • Automate Backups: Regularly backup your config files and missions for easy restoration.
  • Join Arma 3 Communities: Online forums and Discord servers are invaluable for troubleshooting and sharing mission ideas.

Cost Tips for Hosting an Arma 3 Server

Hosting doesn’t have to be expensive:

  • Home Hosting: If you already have a decent PC and internet, hosting from home is practically free—just consider electricity and bandwidth usage.
  • Server Rentals: Renting a dedicated server or a gaming VPS typically costs $10–$30/month, depending on capacity and provider.
  • Split the Cost: If you play with a group, splitting server rental fees makes private hosting very affordable.
  • Watch for Promotions: Many hosts offer discounts or free trials—perfect for testing before committing.
  • Avoid Overpaying: Start with what you need and scale up resources only if your community grows.

Conclusion

Hosting a server on Arma 3 unlocks the game’s full potential for teamwork, customization, and fun. Whether you’re setting up a simple private match or building a massive modded community, the process is straightforward with a little guidance and patience. Remember to pay attention to system specs, networking essentials, and stay up to date with game and mod updates. Soon you’ll be leading your own virtual battlefield, just the way you like it.

Frequently Asked Questions (FAQs)

1. Can I host an Arma 3 server for free?
Yes! You can host a server on your own computer at no additional cost, provided you have the necessary hardware and a stable internet connection. However, if you want 24/7 uptime and high performance, consider renting a server, which will have a monthly fee.

2. Do my friends need the same mods I have on the server?
Absolutely. All players must have the exact same mods (versions included) enabled as the server requires. Otherwise, they may experience errors or be unable to join.

3. Why can’t my friends see or join my Arma 3 server?
The most common causes are closed or incorrectly forwarded ports, firewall restrictions, or mismatches in mods or game versions. Double-check your network settings and ensure all players’ mods match the server.

4. How many players can my server handle?
This depends on your server hardware and network speed. A typical home PC can handle small groups (up to 10 players) comfortably; for larger communities or heavy mod use, you might need a commercial hosting solution.

5. How do I update my Arma 3 server after a game update?
Re-run SteamCMD and use the same commands you used for installation. It will detect and download only the updated files, keeping your server up-to-date and compatible with the latest client version.

With these steps and insights, you have all you need to launch and manage your own Arma 3 server. Enjoy the experience of shaping the battlefield and building your very own Arma community!

Post Views: 9