[SECURITY] Zero Trust Architecture: Securing VPS via Tailscale

[JackaL]

[SECURITY] Zero Trust Architecture: Securing VPS via Tailscale

Leaving Port 22 (SSH) open to the public internet is a massive security vulnerability, even with fail2ban installed. The modern enterprise solution is Zero Trust using Tailscale (WireGuard).

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Implementation Strategy:

1. Install Tailscale on your local machine and your Ubuntu VPS.
2. Authenticate both devices to your private Tailnet.
3. Open your VPS firewall (UFW) to ONLY allow SSH connections from your specific Tailscale IP (e.g., 100.x.x.x).

ufw allow from 100.x.x.x to any port 22
ufw delete allow 22/tcp
ufw reload

Now, your server is completely invisible to Shodan scanners and botnets. You can only SSH into it when your Tailscale VPN is active.