Blocking AI Crawlers: How to Protect Your Data from LLM Training

As of March 2026, AI scrapers have become more aggressive, often ignoring standard crawl-delay directives to feed the latest Large Language Models (LLMs). If you host proprietary research, source code, or private databases, your infrastructure is a target. Here is how to lock down your VELOXNODES server.

1. The robots.txt Shield

The first line of defense is the robots.txt file. While "good" bots follow this, many 2026 scrapers now require explicit "Disallow" tags for their specific User-Agents.

User-agent: GPTBot
Disallow: /

User-agent: CCBot
Disallow: /

User-agent: Anthropic-ai
Disallow: /

2. Server-Level Blocking (Nginx)

To truly stop persistent crawlers, you must block them at the web server level. Add the following to your Nginx configuration to return a 403 Forbidden error to known AI agents.

if ($http_user_agent ~* (GPTBot|CCBot|Anthropic-ai|Google-Extended)) {
    return 403;
}

3. Use an Offshore WAF

Bulletproof hosting gives you the freedom to deploy custom Web Application Firewalls (WAFs) that won't be bypassed by Western ISP-level indexing. By routing your traffic through an offshore proxy, you add a layer of obfuscation that prevents AI crawlers from identifying your real origin IP.