How to Secure Your Home Network: 7 Steps Beyond a VPN

A VPN encrypts your traffic, but it doesn’t fix a compromised router, block malicious DNS requests, or isolate your IoT devices from your work laptop. If you’re serious about home network security, you need a layered approach. Here are seven steps that go beyond just running a VPN.

1. Harden Your Router

Your router is the gateway to your entire network. Most people never change its default settings, leaving it vulnerable to known exploits.

Immediate actions:

• Change default admin credentials — “admin/admin” is the first thing attackers try
• Disable WPS — Wi-Fi Protected Setup has known vulnerabilities that allow brute-force attacks
• Use WPA3 — If your router supports it; WPA2 is still acceptable but WPA3 adds forward secrecy
• Disable remote management — Don’t let anyone configure your router from the internet
• Update firmware — Check monthly; router vendors patch critical vulnerabilities regularly

2. Use a VPN on Your Router

Instead of running a VPN app on each device, configure your router to route all traffic through a VPN. This protects every device on your network—including IoT devices that can’t run VPN software.

NordVPN supports router configuration with manual setup guides for major router brands. This is especially useful for:

• Smart TVs that don’t support VPN apps
• IoT devices (thermostats, cameras, speakers)
• Guest devices on your network

3. Implement DNS-Level Filtering

Your DNS resolver determines where your web requests go. Using your ISP’s default DNS means they can log and sell your browsing history. Switching to a filtered DNS provider blocks malware, phishing, and ad domains at the network level.

Recommended DNS providers:

• NextDNS — Customizable filtering, detailed logs, free tier
• Cloudflare 1.1.1.2 — Malware blocking, fast, privacy-focused
• Quad9 — Threat intelligence from 20+ security vendors

Configure these in your router’s DHCP settings to protect every device automatically.

4. Segment Your Network

Not all devices deserve the same level of trust. Your work laptop needs full access; your smart fridge does not.

Network segmentation strategy:

• VLAN 1 (Trusted): Work devices, personal laptops, phones
• VLAN 2 (IoT): Smart speakers, thermostats, cameras, appliances
• VLAN 3 (Guest): Visitor devices, isolated from everything else

Most modern routers support VLANs or at least guest networks. At minimum, use the guest network for IoT devices.

5. Enable a Firewall (Beyond the Router)

Your router has a basic NAT firewall, but it won’t stop outbound connections from malware. Add a software firewall that monitors and blocks suspicious outbound traffic.

Options:

• Windows Defender Firewall — Built-in, enable advanced rules
• pfSense / OPNsense — Free, runs on dedicated hardware for whole-network protection
• UFW (Linux) — Simple command-line firewall for Linux workstations

6. Monitor Connected Devices

You can’t secure what you don’t know about. Regularly audit which devices are connected to your network.

Tools:

• Fing — Free network scanner, identifies devices by manufacturer
• Wireshark — Deep packet inspection for advanced users
• Router admin panel — Most routers show connected devices with MAC addresses

Set up alerts for new device connections. If an unknown device appears, investigate immediately.

7. Encrypt Your DNS with DoH or DoT

Standard DNS queries are sent in plaintext, meaning your ISP can see every domain you visit. DNS over HTTPS (DoH) or DNS over TLS (DoT) encrypts these queries.

How to enable:

• Firefox: Settings → Privacy → Enable DNS over HTTPS
• Chrome: Settings → Security → Use secure DNS
• Router-level: Some routers support DoT natively; otherwise, use a Raspberry Pi with Pi-hole

Combined with a VPN like ProtonVPN, encrypted DNS ensures your browsing is private at every layer.

The Complete Stack

For maximum home network security, combine all seven layers:

1. Hardened router with updated firmware and strong credentials
2. Router-level VPN via NordVPN for whole-network encryption
3. DNS filtering via NextDNS or Cloudflare for malware blocking
4. Network segmentation with VLANs or guest networks
5. Software firewall monitoring outbound connections
6. Device monitoring with alerts for new connections
7. Encrypted DNS (DoH/DoT) for query privacy

FAQ

Do I need all seven layers? No. Start with a VPN and router hardening (steps 1-2), then add layers based on your threat model. Most home users are fine with 3-4 layers.

Will this slow down my internet? Each layer adds minimal overhead. A VPN adds 5-15% latency; DNS filtering adds under 1ms. The security benefit far outweighs the performance cost.

Is this overkill for a home network? If you work from home, handle sensitive data, or have IoT devices on your network—no. These are baseline security measures that enterprise networks implement by default.

Bottom Line

A VPN is necessary but not sufficient. NordVPN handles your encryption, but true home network security requires router hardening, DNS filtering, and network segmentation. Start with the basics and add layers as your needs grow.