# Foxio Labs

> Open-source platform for JA4+ network fingerprinting education, training, and hands-on labs. JA4+ is used by Fortune 500 companies including Microsoft, Amazon, and Google to detect bots, proxies, and hacking tools at the protocol level.

Foxio Labs provides free, open-source educational resources for cybersecurity professionals, researchers, and engineers who want to master the JA4+ suite of network fingerprinting methods.

## Guides

- [Inbound Detection Guide](https://foxiolabs.io/guides/inbound-detection): How to use JA4+ to detect bots, proxies, session hijacking, VPNs, and hacking tools inbound to your servers.

## Tutorials

- [Tutorials Home](https://foxiolabs.io/tutorials): All hands-on JA4+ labs and tutorials.
- [JA4 – TLS Client Fingerprinting](https://foxiolabs.io/tutorials/quick-labs/ja4): Learn the a_b_c format and TLS ClientHello fingerprinting.
- [JA4H – HTTP Client Fingerprinting](https://foxiolabs.io/tutorials/quick-labs/ja4h): Fingerprint HTTP clients and detect spoofed User-Agents.
- [JA4S – TLS Server Fingerprinting](https://foxiolabs.io/tutorials/quick-labs/ja4s): Server response fingerprinting and session analysis.
- [JA4T – TCP Client Fingerprinting](https://foxiolabs.io/tutorials/quick-labs/ja4t): TCP fingerprinting for OS identification and VPN detection.
- [JA4SSH – SSH Traffic Fingerprinting](https://foxiolabs.io/tutorials/quick-labs/ja4ssh): Identify interactive vs automated SSH sessions.
- [JA4TS – TCP Server Fingerprinting](https://foxiolabs.io/tutorials/quick-labs/ja4ts): TCP server response fingerprinting.
- [JA4TScan – Active TCP Scanner](https://foxiolabs.io/tutorials/quick-labs/ja4tscan): Active TCP fingerprint scanning.
- [Wireshark Plugin](https://foxiolabs.io/tutorials/quick-labs/wireshark-plugin): Install and use the JA4+ Wireshark dissector.
- [Advanced Labs](https://foxiolabs.io/tutorials/advanced-labs): Advanced JA4+ fingerprinting scenarios.

## About

- [About Foxio Labs](https://foxiolabs.io/about): Mission, team, and open-source philosophy.
- [Integrations](https://foxiolabs.io/integrations): Supported tools and platforms (Wireshark, Arkime, Zeek, etc.).

## External Resources

- [JA4+ GitHub Repository](https://github.com/FoxIO-LLC/ja4): Open-source JA4+ implementation.
- [JA4 Database](https://ja4db.foxio.io): Community fingerprint database.
- [FoxIO Blog](https://blog.foxio.io): Technical articles and research.