How to Build an Unstoppable Service: The L-Security Cloud Tank Architecture

Source: Dev.to

Introduction: Why Your VPN Stops Working

In the era of total network control and DPI (Deep Packet Inspection), standard solutions for ensuring availability (like OpenVPN or classic Shadowsocks) are quickly blocked. Regulators have learned to analyze traffic, even when it’s fully encrypted.

In this article we examine the L‑Security Cloud Tank architecture—a solution that makes blocking not just difficult, but economically and technically infeasible. Our approach combines protocol obfuscation with adaptive, geo‑dependent Collateral Defense.

The Protocol Shield: Defeating DPI

Utilizing VLESS/V2Ray with WSS/TLS

• VLESS (VLess over TCP) – a modern, lightweight protocol that minimizes metadata, making it unrecognizable.
• WSS/TLS – traffic is masked as a standard secure WebSocket request. For DPI systems this looks like a normal HTTPS session on a popular website.

Configuration Example (VLESS Placeholder)

{
  "inbounds": [{
    // configuration details go here
  }]
}

The Infrastructure Shield: The Principle of Collateral Defense (Tanking)

Even if the protocol is perfect, its IP address can still be blocked. We solve this by hiding behind “digital tanks”—the largest global providers.

Multi‑CDN Load Balancing and CIDR‑Blocks

• Reverse Proxy VM (Core Node) – deployed in a carefully selected CIDR block of a cloud provider (e.g., AWS or GCP) that is widely used by banks, government bodies, and critical services.

Anycast IP Fronting

• Use global CDNs (Cloudflare, Azure Front Door) as reverse proxies. All users only see the CDN’s Anycast IP.

The Tanking Effect

Blocking the Anycast IP of Cloudflare or the CIDR block of AWS would cause massive collateral damage for thousands of legitimate services, making blocking economically impossible for the regulator.

Modernization: Adaptive Geo‑Defense (Geo‑Aware Defense)

We enhance protection by adding regional intelligence.

Dynamic Switching to Local Tanks

If global CDNs are blocked in a specific country (as was the case with Telegram when Google/AWS were blocked), the system switches to local, untouchable providers.

• Geo‑Monitoring – GeoDNS and distributed health checks detect failures in a specific country (e.g., China).
• Local Node – When blocking is detected in Region X, the DNS load balancer instantly reroutes traffic from that region to a reverse‑proxy VM located in a local cloud (e.g., Alibaba Cloud or Yandex Cloud), which is associated with nationally critical resources.

Advantage: The strongest and most “unblockable” asset is always used in the given jurisdiction.

High‑Level Deployment Instructions

Step 1: Core Node and Obfuscation (Protocol)

1. Deploy a Core Node (VM) in a neutral jurisdiction.
2. Install V2Ray/VLESS configured with WSS/TLS on port 443.

Step 2: Global Shield Creation (Infrastructure)

1. Configure reverse proxying on Cloudflare, AWS CloudFront, and Azure Front Door.
2. Set the Core Node’s IP address as the origin server for all CDNs, using Full/Strict SSL.

Step 3: Adaptive Balancer Setup (DNS)

1. Use a DNS load balancer service (e.g., Route 53 Traffic Flow).
2. Create A‑records pointing to the Anycast IP of each CDN.
3. Configure health checks with a low failure threshold.

Step 4: Implementing Geo‑Logic (Modernization)

1. Deploy local VMs (e.g., in Alibaba Cloud).

2. Configure a geo‑routing policy in the DNS balancer.

3. Apply the logic:

   IF request originates from [Country X]
       THEN route to [Local Tank Y]
   ELSE
       route to [Global Tank Z]

Discussion

The L‑Security Cloud Tank is not just a tool; it is an architectural philosophy that shifts ensuring availability from “fighting filters” to economic and political coercion through the use of legal global infrastructure.

What ethical or technical challenges do you see in this model? Let’s discuss in the comments!

Tags: #devops #cloud #networking #architecture #vpn #censorship #v2ray #resilience #infosec