Gatekeeper is a lightweight, highly optimized Minecraft plugin that defends your server from VPNs, proxies and abusive ISP ranges. It combines fast local ASN analysis with optional external IP checks to give you a multi-layered protection system that’s tuned for high connection volumes.
Requirements:
- Java 11 or later
- Server version 1.8 - 1.21.10
Features:
- Block VPNs and proxies (local + external layered detection)
- ASN / ISP blocking (block entire provider ranges)
- External IP verification via configurable APIs (fallback shield)
- Country detection and country-based rules
- Per-IP player limit (prevent account sharing and sockpuppets)
- Connection rate limiting (protect against rapid reconnects / attack vectors)
- Extremely lightweight and optimized for high concurrent connections
- Local ASN analysis — proxy detection in under 1 millisecond for most checks
- Configurable priorities and easy integration with permission systems
Why choose Gatekeeper?
Gatekeeper combines speed and depth: local ASN analysis gives instant verdicts with tiny CPU cost, and the external API layer catches anything missed locally. That means fewer false negatives, minimal server load, and industry-grade features without a paywall.
Quick install
- Drop
Gatekeeper.jar into your server's plugins folder.
- Restart the server to generate the default config.
- Edit
config.yml to add API keys, ASN lists, rate limits and country rules.
- Reload or restart.
Recommended for
- Large public servers and networks
- Hubs and proxy-prone communities
- Admins who want advanced blocking (ASN, country, rate limits) with minimal resource use
