Setting up a smart home is exciting, but before you plug in your first smart bulb or voice assistant, it pays to lock down your network. A secure foundation helps keep your personal data and connected devices safe from unwanted access. The steps below, drawn from government cybersecurity guidance and platform documentation, walk you through the essentials of router hardening, device protection, and modern smart home standards like Matter.
Secure Your Router First
According to CISA’s Project Upskill Module 5, your router is the gateway to your smart home, and securing it is crucial. The module outlines minimum essential steps that apply to any router, though you should consult your own device’s manual for exact instructions. The FTC also emphasizes that the key to privacy in the Internet of Things world is your router, because all your connected devices likely connect to the internet through it.
Change Default Credentials and Network Name
CISA advises changing the router’s default administrator username and password right away. Default credentials may be publicly available, so create a password that is long, random, and unique. The FTC adds that you should avoid login names or passwords that include your name, address, or router brand. Next, change the default SSID, the name of your Wi-Fi network. CISA explains that the default SSID could alert a threat actor to known vulnerabilities associated with your router model. Do not give your Wi-Fi network a name that includes sensitive or identifying personal information.
Enable Strong Encryption
CISA’s module says to check that your router uses WPA3 Personal or WPA2 AES encryption (sometimes labeled WPA2 PSK). These are the only two forms of encryption considered safe against attackers who might try to see what data you send across your network. If your router is open or uses older encryption such as WEP, WPA, or WPA2 TKIP, contact your internet service provider to request an upgrade or consider purchasing a new router. The FTC similarly recommends enabling encryption through your router’s wireless security settings. CISA’s home network security page also notes that WPA3 Personal AES is currently the most secure router configuration available for home use, approved by the National Institute of Standards and Technology.
Disable Risky Features
CISA’s module recommends disabling several features that can increase your network’s attack surface. Turn off remote management, which allows logging into your router over the internet; disabling it prevents threat actors from changing your router’s settings without first connecting to your network. Disable Wi‑Fi Protected Setup (WPS). CISA’s home network security page explains that a design flaw in the WPS PIN authentication significantly reduces the time needed for a brute‑force attack, and many routers lack a proper lockout policy after failed attempts. Also disable Universal Plug and Play (UPnP). While UPnP makes it easy to connect smart devices, CISA warns that malware can use UPnP to bypass your router’s firewall, spread to other devices, and allow remote control. The FTC also suggests disabling remote management if you won’t use it.
Set Up a Guest Network for IoT Devices
CISA’s module says that if your router offers a guest Wi‑Fi option, you should enable it with a separate password that is long, random, and unique. Connect any smart home and other IoT devices to the guest network if they only need internet access. This prevents those devices from discovering other devices on your main home network, accessing your router settings, or introducing vulnerabilities. The FTC also mentions setting up a guest network as a security measure.
Protect Each Smart Device
Once your router is secure, the FTC advises turning your attention to each connected device. You can see which devices are connected by going to your router’s web interface and looking for connected devices, wireless clients, or DHCP clients. Then take these steps for every device.
Change Default Passwords and Use Two-Factor Authentication
The FTC says to change any default username and password that came with a device out of the box. When you set a new password, do not reuse one from another account, because hackers sometimes use stolen credentials from data breaches to compromise other accounts. If a device offers two‑factor authentication, a password plus something else, like a code sent to your phone or a thumbprint scan, use it.
Keep Firmware and Apps Updated
The FTC recommends checking for firmware updates on the manufacturer’s website, and if your device is accessible through an app on your phone, use the most up‑to‑date version of the app. CISA’s home network security page stresses that regular software updates are one of the most effective steps you can take, because updates often include critical patches and security fixes. Some routers allow you to turn on automatic updates. CISA also suggests removing unnecessary services and software to reduce the attack surface.
Disable Unused Features and Monitor Access
The FTC advises disabling features you won’t use, such as remote management, and disconnecting older devices you no longer use from the network, because their security may be out of date and create a weak point. For IP cameras like baby, pet, or security cams, check the camera’s access logs regularly for unauthorized access. Look for IP addresses you don’t recognize or odd access times that don’t fit your normal patterns. For smart TVs, find the tracking settings and adjust them to match your privacy preferences, and remove apps you don’t use.
Set Up Matter for a Reliable Smart Home
Matter is an industry standard designed to eliminate compatibility issues and increase security. Google’s support page explains that Matter‑enabled devices work locally over your existing home wireless network without needing to connect to the cloud, which makes commands faster and more reliable. Apple’s support document describes how to pair and manage Matter accessories with the Home app.
How Matter Works and Why It Matters
According to Google, Matter simplifies device setup and provides cross‑platform control, so a Matter‑enabled device can be controlled simultaneously in multiple certified smart home apps like Google Home, Apple Home, and Amazon Alexa. Devices communicate over Wi‑Fi, Ethernet, or Thread. Thread is a low‑power mesh networking technology that can extend range, improve reliability, and help battery‑powered devices last longer. Apple notes that paired Matter accessories sync using iCloud Keychain with end‑to‑end encryption, so no one else can access the pairing keys.
Using a Hub and Enabling IPv6
Google’s guide states that before you can add Matter‑enabled devices to Google Home, you need a Matter‑enabled hub device set up on your home wireless network. Hubs can be speakers, displays, or Wi‑Fi routers that support Matter over Wi‑Fi, and some also act as Thread border routers to connect Thread devices. Google also emphasizes that IPv6 must be enabled on your home network for Matter to work properly, because IPv6 provides secure communication, simplifies network management, and bridges Thread and Wi‑Fi networks. Apple’s support page says that for the best experience, you should set up a home hub such as a compatible streaming box or smart speaker, though with iOS 18 or later you can add Matter accessories directly without a hub; Thread‑based accessories may still require a Thread‑enabled hub or a compatible Thread border router.
Adding Matter Accessories with Apple Home
Apple’s instructions: open the Home app, tap the Add button, then tap Add Accessory. If the Matter accessory was previously paired to another app, tap More options and select it. Otherwise, scan the setup code or hold your device near the accessory. You can view all paired Matter accessories in Settings > General > Matter Accessories. To remove an accessory, you can delete it from iCloud Keychain, from individual connected services, or from all services, depending on whether you want to keep control through other apps.
Smart Home Setup Checklist
Before you add any smart devices, work through these network security steps. Change your router’s default administrator password and SSID. Enable WPA3 or WPA2 AES encryption. Disable WPS, UPnP, and remote management. Create a guest Wi‑Fi network with a strong, unique password and plan to connect your IoT devices there. For each smart device, change default credentials, enable two‑factor authentication where available, and keep firmware and apps updated. If you are building a new system, look for the Matter logo on device packaging to ensure broad compatibility and local control. For more detailed guidance on choosing and setting up smart home gear, visit our Smart Home Setup category, which covers everything from smart home hubs to smart lighting. You can also review our Gadget Buying Checklist for tips on evaluating specs and support, and explore the Tech Buying Guides section for broader advice. Understanding the differences between connectivity standards can help too, see our article on Matter vs Zigbee vs Thread.
Frequently asked questions
Do I really need a separate guest network for smart devices?
CISA’s guidance strongly recommends using a guest Wi‑Fi network for IoT devices that only need internet access. This keeps them isolated from your main devices and prevents them from discovering other gadgets on your home network or accessing your router’s settings. The FTC also mentions guest networks as a useful security measure.
What if my router doesn’t support WPA3?
CISA says that WPA2 AES (also called WPA2 PSK) is still considered safe and secure. If your router uses older encryption like WEP, WPA, or WPA2 TKIP, you should contact your ISP for an upgrade or consider a new router. The FTC also advises enabling encryption through your router’s wireless security settings.
Can I set up Matter devices without a hub?
Google’s support page states that you need a Matter‑enabled hub device to add and control Matter devices locally. Apple’s documentation notes that with iOS 18 or later, you can add Matter accessories directly to the Home app without a home hub, but for the best experience, especially with Thread accessories, a home hub or Thread border router is recommended. Check your device’s requirements before you begin.
For more step-by-step guidance on building your smart home, explore our Smart Home Setup category.
