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haproxy-protection/README.md

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## haproxy-protection
A fork and further development of a proof of concept from https://github.com/mora9715/haproxy_ddos_protector, a HAProxy configuration and lua scripts allowing a challenge-response page where users solve a captcha and/or proof-of-work. Intended to stop bots, spam, ddos.
Integrates with https://gitgud.io/fatchan/haproxy-panel-next to add/remove/edit domains, protection rules, blocked ips, backend server IPs, etc during runtime.
#### Features / improvements in this fork:
- Implement a proof-of-work mode, in addition to the existing captcha only mode.
- Supports either hcaptcha or recaptcha.
- Support .onion/tor with the HAProxy PROXY protocol, using circuit identifiers as a substitute for IPs.
- Allow users without javascript to solve the POW by providing a shell script and html form inside `noscript` tags.
- Use HAProxy `http-request return` directive to directly serve files from the edge without a separate backend.
- Adjustable cookie validity lifetime.
- Adjustable "mode" ("none", "pow" or "pow+captcha") per domain or domain+path
- Improved the appearance of the challenge page.
- Add several useful maps & acls to the haproxy config:
- Whitelist or blacklist IPs/subnets.
- Maintenance mode page for selected domains.
- Fix multiple security issues.
- Many bugfixes.
#### Installation
See [INSTALLATION.md](INSTALLATION.md)
#### Screenshots
![nocaptcha](img/nocaptcha.png "no captcha mode")
![captcha](img/captcha.png "captcha mode (pow done asynchronously in background)")
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