🔒MITM Proxy Controls TLS Fingerprints and HTTP Headers
Control your TLS fingerprints like a pro
TL;DR
A new MITM proxy allows fine-grained control over TLS fingerprints, HTTP header order, User-Agent strings, and source IP addresses. Perfect for security testing of WAF bot-detection systems.
MITM Proxy now lets you tweak everything from TLS fingerprints to HTTP/2 settings in a single YAML config file. This is huge for anyone doing security audits or testing web app firewalls (WAFs). You can customize User-Agent headers, spoof source IPs, and even reorder HTTP headers—all without touching the codebase. The proxy supports macOS/Linux and requires Go 1.22+. It auto-generates a CA cert on first run and stores it in `ca.crt` and `ca.key`. This is essential for anyone who needs to simulate different client behaviors or test security measures against sophisticated bots.
Key Points
MITM proxy controls JA3/JA4 TLS fingerprints, HTTP/2 settings, and header order via YAML config
Includes a Chrome extension to toggle the proxy and switch fingerprint profiles from browser toolbar
Requires Go 1.22+; distro-packaged Go often outdated—install official binary directly
Supports multiple TLS fingerprint presets including Chrome, Firefox, Safari, Edge, iOS, random
Proxy exposes mgmt_listen (default 127.0.0.1:8081) for management and configuration via HTTP API
Why It Matters
If you're testing WAFs or auditing web apps against sophisticated bots, this proxy is a game changer. It lets you simulate different client behaviors by tweaking TLS fingerprints, User-Agent headers, and even source IPs. But it's not just for security pros—developers building robust systems need to understand how their software behaves under these conditions.
Frequently Asked Questions
Why does this matter?
If you're testing WAFs or auditing web apps against sophisticated bots, this proxy is a game changer. It lets you simulate different client behaviors by tweaking TLS fingerprints, User-Agent headers, and even source IPs. But it's not just for security pros—developers building robust systems need to understand how their software behaves under these conditions.
What happened?
A new MITM proxy allows fine-grained control over TLS fingerprints, HTTP header order, User-Agent strings, and source IP addresses. Perfect for security testing of WAF bot-detection systems.
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