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Add native rate limiting support to Undertow server

Description

Currently, CommandBox's Undertow server doesn't include native rate limiting capabilities. This security feature would help protect CF applications against malicious traffic.

Desired Functionality:

  • Limit requests per IP address within a specified timeframe

  • Configure via server.json, similar to other server settings

  • Configurable options for:

    • Maximum requests per time window

    • Time window duration

    • Response status code (e.g., 429)

    • Optional IP whitelist

Background:
This came up in a forum discussion where a developer suggested it could be added as an Undertow handler. Having this built into CommandBox would provide important security functionality without requiring Java expertise or external proxy servers.

Use Case:
Protecting CF applications from:

  • Rapid vulnerability scanning

  • Bot abuse

  • Brute force attempts

  • DDoS attacks

This would be similar to nginx's limit_req_zone functionality but native to CommandBox.

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Created January 16, 2025 at 6:44 PM
Updated January 16, 2025 at 9:01 PM

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Luis MajanoJanuary 16, 2025 at 9:01 PM

Yes. And part of BoxLang as well

Brad WoodJanuary 16, 2025 at 7:29 PM

Thanks for the ticket. I still really like this idea and we’ll likely implement it. However, this feature will probably be a candidate to be part of CommandBox Pro’s subscription model. cc do you agree?

Alex RousseauJanuary 16, 2025 at 6:47 PM

This came up in this thread, here: