Factorio server setup (Ubuntu)

setup.md

As root, update the server's installed packages:

> apt-get update
> apt-get upgrade -y

Set default editor (vim):

> update-alternatives --config editor

Allow SSH and Factorio connections:

> ufw allow openssh
> ufw allow 34197/udp
> ufw enable

Configure jail2ban to protect from botnets:

> apt-get install -y fail2ban
# jail.conf is a template, make edits to jail.local
> cp /etc/fail2ban/jail.conf /etc/fail2ban/jail.local

Set server time zone:

> dpkg-reconfigure tzdata

Add user that will run the factorio process and grant it root permissions:

> adduser gamemaster
> usermod -aG admin gamemaster
> usermod -aG sudo gamemaster

Append public key to /home/gamemaster/.ssh/authorized_keys to enable ssh login as gamemaster.

Enable ssh login only and disable root:

> vim /etc/ssh/sshd_config
--- Make the following config changes ---
ChallengeResponseAuthentication no
PasswordAuthentication no
PermitRootLogin no
UsePAM no
-----------------------------------------

> systemctl reload ssh

Download Factorio:

> su - gamemaster
> wget --content-disposition https://www.factorio.com/get-download/latest/headless/linux64
> tar xf factorio

Configure server settings

> cd factorio/data; cp server-settings.example.json server-settings.json
# Make edits to server-settings.json

Factorio requires a save to initialize. Create the saves directory and upload or create a save game:

> mkdir /home/gamemaster/factorio/saves
> cd /home/gamemaster/factorio/bin/x64
> factorio --create /home/gamemaster/factorio/saves/<name of save game>.zip

As root, create and start the factorio service:

> cd /etc/systemd/system
> vim factorio.service
--- Paste these settings ---
[Unit]
Description=Factorio service
After=network.target

[Service]
User=gamemaster
ExecStart=/home/gamemaster/factorio/bin/x64/factorio --server-settings /home/gamemaster/factorio/data/server-settings.json --start-server-load-latest --console-log /home/gamemaster/Factorio.log
Restart=always

[Install]
WantedBy=multi-user.target
--------------------------
> systemctl daemon-reload
> systemctl enable factorio
> systemctl start factorio

Server is ready to go. Share the configured game name and password or the IP the game is not "publicly visible".