🔒 Security Best Practices - QBCore Guide for FiveM

Introduction

This tutorial turns 🔒 Security Best Practices into a clean, developer-friendly guide for QBCore/FiveM. You will follow a step-by-step flow, copy the relevant code patterns, and learn the “why” behind the setup.

Requirements

• QBCore installed and running on a dev server
• Basic Lua knowledge and comfort reading FiveM patterns
• A test workflow for iterating safely (dev server, not production)
• Optional: a code editor with Lua/FiveM helpers (VS Code recommended)

Step-by-Step Guide

Step 1: Security Overview

In this step, you will apply the security overview concept as a practical change: define the pieces, wire them together, then verify the behavior in your dev server.

Step 2: Security Threat Categories

In this step, you will apply the security threat categories concept as a practical change: define the pieces, wire them together, then verify the behavior in your dev server.

Step 3: Security Framework

In this step, you will apply the security framework concept as a practical change: define the pieces, wire them together, then verify the behavior in your dev server.

Step 4: Defense in Depth

In this step, you will apply the defense in depth concept as a practical change: define the pieces, wire them together, then verify the behavior in your dev server.

Step 5: Zero Trust Model

In this step, you will apply the zero trust model concept as a practical change: define the pieces, wire them together, then verify the behavior in your dev server.

Step 6: Immediate Security Actions

In this step, you will apply the immediate security actions concept as a practical change: define the pieces, wire them together, then verify the behavior in your dev server.

Step 7: Critical Security Checklist

In this step, you will apply the critical security checklist concept as a practical change: define the pieces, wire them together, then verify the behavior in your dev server.

Step 8: Quick Hardening Steps

In this step, you will apply the quick hardening steps concept as a practical change: define the pieces, wire them together, then verify the behavior in your dev server.

Code Example

# Update system packages
sudo apt update && sudo apt upgrade -y
 
# Configure basic firewall
sudo ufw enable
sudo ufw allow 22/tcp     # SSH
sudo ufw allow 30120/tcp  # FiveM
sudo ufw allow 30120/udp  # FiveM UDP
sudo ufw deny 3306/tcp    # Block MySQL external access
 
# Secure SSH
sudo sed -i 's/#PermitRootLogin yes/PermitRootLogin no/' /etc/ssh/sshd_config
sudo sed -i 's/#PasswordAuthentication yes/PasswordAuthentication no/' /etc/ssh/sshd_config
sudo systemctl restart ssh
 
# Set up fail2ban
sudo apt install fail2ban -y
sudo systemctl enable fail2ban

Tips & Best Practices

• Keep authority on the server: validate inputs before money/database operations.
• Start with one resource/module at a time, then refactor after you verify it works.
• Use callbacks for request/response flows and events for push/UX updates.
• When you run loops, avoid freezes: always yield with Wait() (client/server) and cache hot values.