Website Security (Zero Trust Model)

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Your ‘trusted’ users are the biggest risk. Adopting a Zero Trust Model ensures that every login attempt is verified, even from inside your network.

Tools for Zero Trust Implementation

  • Cloudflare Access – Provides secure access to applications without a VPN.
  • Tailscale – A modern VPN alternative with easy-to-use zero-trust networking.

🔗 Related Links:

You Should Know:

1. Implementing Zero Trust with Cloudflare Access

Cloudflare Access replaces VPNs by enforcing identity-based access policies.

Steps to Configure Cloudflare Access:

1. Sign up for Cloudflare Zero Trust.

  1. Add applications to protect (e.g., internal dashboards, SSH, RDP).

3. Set up authentication (Google, GitHub, or SAML).

  1. Define access policies (e.g., allow only verified emails).

Example Policy Command (Cloudflare WARP):

warp-cli set mode proxy
warp-cli connect

2. Zero Trust with Tailscale

Tailscale uses WireGuard for secure peer-to-peer connections.

Steps to Install & Use Tailscale:

1. Install Tailscale (Linux example):

curl -fsSL https://tailscale.com/install.sh | sh

2. Authenticate:

sudo tailscale up

3. Check connected devices:

tailscale status

3. Linux Firewall (UFW) for Zero Trust

Restrict internal access using Uncomplicated Firewall (UFW):

sudo ufw default deny incoming 
sudo ufw allow from 192.168.1.0/24 to any port 22 
sudo ufw enable

4. Windows Zero Trust with PowerShell

Restrict RDP access to specific IPs:

New-NetFirewallRule -DisplayName "Restrict RDP" -Direction Inbound -LocalPort 3389 -Protocol TCP -Action Allow -RemoteAddress 192.168.1.100

5. Monitoring & Logging (Zero Trust Enforcement)

Use Fail2Ban to block brute-force attempts:

sudo apt install fail2ban 
sudo systemctl enable fail2ban

What Undercode Say:

Zero Trust is not just a buzzword—it’s a necessity. Traditional perimeter security fails against insider threats. By enforcing strict access controls, continuous authentication, and least-privilege principles, organizations can mitigate breaches.

Key Commands to Remember:

  • Linux: 
    sudo tailscale up  Connect Tailscale
sudo ufw status  Check firewall rules
  • Windows: 
    Get-NetFirewallRule | Where-Object { $_.DisplayName -like "RDP" }  Check RDP rules

Expected Output:

A secure, verified access system where no entity is trusted by default, reducing attack surfaces significantly.

🔗 Further Reading:

References:

Reported By: Egwuatu Prince – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅

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