Design and configure UniFi with confidence

Why RD4U

UniFi gives you a lot of power, but that power often comes with complexity, especially if you’re new to UniFi. VLANs, firewall rules, and network relationships can be hard to reason about if you’re trying to build a secure network without becoming a firewall expert first.

RD4U was created to make that process clearer and more intentional. Instead of starting with low-level settings, you start with what you want your network to do. RD4U then helps translate that into a design you can review, understand, and trust.

Why people choose RD4U:

• Intent first, configuration second: Define how your networks and devices should behave, then let RD4U help turn that into working UniFi settings.
• Easier firewall design: Build access rules visually instead of piecing them together through rule order and trial-and-error.
• Safer changes: Review what RD4U plans to do before anything is applied to your gateway.
• Useful for both new and existing setups: Start from a clean slate or import what you already have and add structure without starting over.
• Built for real-world networks: RD4U helps you design around the way your network needs to behave, not just the way settings are labeled in the UniFi UI.

The result is a UniFi configuration that feels deliberate, understandable, and much easier to get right.

What RD4U Helps You Configure

RD4U lets you define how your network should behave, then walks you through turning that into a working UniFi configuration. Instead of guessing at settings, you define what you want — and RD4U builds it with you.

Network Design

• Define VLANs and network roles (Home, Guest, IoT, Cameras)
• Assign Wi-Fi networks to the right segments
• Build a clean, structured network from the start

Firewall & Access Control

• Control which networks and devices can communicate
• Use a visual approach instead of rule-order guesswork
• Start from safe defaults and allow only what you need

Smart Device Connectivity

• Make AirPlay, Chromecast, Sonos, and similar devices work across VLANs
• Automatically configure discovery behavior like mDNS and IGMP
• Avoid common issues where devices disappear or fail to connect

Choose Your Starting Point

Whether you’re starting fresh or building on an existing UniFi setup, RD4U gives you a safe, guided path forward.

1. Start Fresh

Best for first-time UniFi users, rebuilds, or anyone who wants a clean baseline.

• Begin with a factory-reset UniFi gateway
• Optionally load a proven sample configuration
• Start from a known-good foundation you can understand and trust
• Preview all proposed changes before anything is applied

Benefit: You get a clean, predictable starting point without having to piece everything together manually.

2. Build on What You Already Have

Best for existing UniFi setups with VLANs already defined.

• Import your existing VLANs into RD4U
• Add structure and clarity without starting over
• Define how networks should communicate using the visual designer
• Preview changes before anything is applied

Benefit: You keep what already works while making your network easier to understand, refine, and extend.

What Users Are Saying

How RD4U Works

RD4U walks you through your UniFi setup step by step. You define what you want your network to do, and the wizard helps turn that into a working configuration.

The process is simple and structured:

• Connect to your UniFi gateway
• Define networks and VLANs
• Assign Wi-Fi networks (optional)
• Configure VPN access (optional)
• Define how networks and devices can communicate
• Review your configuration before applying changes

You stay in control the entire time. Nothing is applied unless you choose to proceed.

Visual Firewall Design & Safe Preview

One of the hardest parts of UniFi configuration is getting firewall rules right. Rule order, direction, and hidden interactions can make it difficult to understand what is actually allowed.

RD4U replaces that complexity with a visual, intent-based approach that’s easier to reason about. Instead of building rules manually, you define how networks and devices should communicate and RD4U translates that into the required firewall rules.

• See how your networks are connected at a glance
• Define allowed communication without worrying about rule order
• Start from safe defaults and open only what you need

Before anything is applied, RD4U shows you exactly what will change. You can review the configuration, explore the results, or exit without making any modifications.

This makes it much easier to build a secure network without trial and error.

The preview below shows how RD4U visualizes network relationships and applies your design.

Step 5 – Define how networks communicate

Select Smart Devices and RD4U configures discovery and firewall rules automatically

Preview Mode

Before anything is applied, you can review a complete preview of the configuration RD4U plans to create. This includes all firewall rules and related settings, VLAN creation or changes, and other configuration generated by the wizard.

Preview Mode allows you to:

• See every change before it touches your gateway
• Confirm that the configuration matches your expectations
• Run the entire wizard without applying any changes
• Explore the wizard without logging in, before connecting to your gateway.

Only when you click Write Changes does RD4U begin configuring your gateway. Progress is shown step by step, so you always know what is happening.

If you’re not ready, you can stop at Preview Mode, go back, and make adjustments.

Step 6 - Preview Mode and Write Changes

Preview Mode shows exactly what would be configured. Nothing is written unless you choose to apply it. The result is a UniFi setup that feels easier to understand and much easier to get right.

Your Security Comes First

Because RD4U connects directly to your UniFi gateway, security, transparency, and user control were non-negotiable design goals from the very beginning:

• Code-Signed: Verified by Photolightning Corp (20+ years in business)
• Runs Locally: All API calls are made via a local account on your UniFi gateway (we never access your UniFi Cloud Account)
• No Data Leaves Your Machine/Gateway: Your config stays 100% private
• Open Source API Layer: Based on the MIT-licensed UniFi-API-client
• Preview Mode: Allows you to view all config steps before logging in (No credentials required)

Compatibility & System Requirements

RD4U is designed to work with UniFi Cloud Gateways and runs locally on your computer. The requirements below outline what’s supported and what to expect before getting started.

Supported UniFi Cloud Gateways

As of , RD4U has been tested with the following UniFi Cloud Gateways, and should work with any UniFi Cloud Gateway that is running Network v8.6.9 or higher

• Cloud Gateway Fiber (UCG-Fiber), Dream Machine SE (UDM SE), Dream Machine Pro (UDM Pro)
• Cloud Gateway Max (UCG-Max), Express (UX), Dream Router (UDR)

System Requirements

• Windows: Windows 10 or later
• macOS: As of 6/3/25, tested on macOS 15.5 Sequoia. Earlier versions (e.g. Sonoma, Ventura) may work, but haven’t been formally tested yet. Apple Silicon required (M1, M2, M3, M4, or newer).
  • Note: Intel-based Macs are not supported.

Operational notes

No installation is required on UniFi hardware — the wizard connects directly via the UniFi API.

For best results, start with either a) a factory-reset UniFi Cloud Gateway or b) an existing setup after clearing your firewall rules (RD4U will import your existing VLANs).

Frequently Asked Questions

Try RD4U Today

Free to use. Runs locally. No changes unless you choose to apply them.

Preview Mode lets you explore the wizard without logging in and see exactly what would change before anything is written to your UniFi gateway.

What is RD4U?

RD4U (Rapid Deployment for UniFi) is a free Windows-based configuration wizard designed to help users transition from consumer-grade routers like Netgear, Asus, and TP-Link to UniFi Cloud Gateways. It simplifies the setup of VLANs, inter-network firewall rules, VPN access, and DDNS, with no command-line knowledge required. Ideal for prosumers, home lab users, and small office networks.