u/_ToppYMan_

Hey chooms!

I play way too much Cyberpunk and work in software, so I decided to build a real-world piece of ICE (Intrusion Countermeasures Electronics) inspired directly by the Blackwall.

In reality, servers get scanned constantly by rogue botnets and hackers. Normally, a standard firewall just drops their connection. But my Blackwall acts as active, hostile ICE.

It intercepts the connection at the lowest system level. If it detects malicious behavior, it doesn't just block them - it throws them into an AI-generated construct.

The attacker thinks they've successfully hacked the server, but they are actually sitting in a fake terminal controlled by a local AI. The AI hallucinates fake files, passwords, and directories on the fly, streaming the responses back incredibly slowly to trap the hacker and waste their time while silently logging everything they do.

It's been running on my servers and catching actual botnets. I open-sourced the whole project for any actual netrunners out there who want to look at the code (I'll drop the GitHub link in the comments if anyone is interested)

Hey everyone! I recently open-sourced a project I've been working on, inspired by the "Blackwall" from Cyberpunk 2077.

Instead of just dropping malicious network packets, this adaptive firewall redirects attackers into a fake Linux bash shell powered by a local LLM (like Ollama). It wastes their time by simulating a compromised server while logging their behavior.

Why it's cool:

• Pure Rust & eBPF: Written entirely in Rust (~8,500 LOC, zero unwrap() in production) using aya-rs.
• Nanosecond decisions: Does packet parsing, payload entropy analysis, and JA4 TLS fingerprinting directly in the kernel via XDP.
• The Deception Mesh: The LLM tarpit streams fake terminal responses with exponential jitter to make the "server" feel real but frustratingly slow for the attacker.

Would love for you to check out the repo and hear your thoughts!

GitHub Repo: https://github.com/xzcrpw/blackwall