# \#waf

**URL:** https://community.nginx.org/tag/waf/295.md

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## [Converting string IP address to binary address](https://community.nginx.org/t/converting-string-ip-address-to-binary-address/5061)

<div class="topic-metadata">

**Author:** [@adam-rehin](https://community.nginx.org/u/adam-rehin)\
**Replies:** 1\
**Last updated:** [June 10, 2025, 4:13pm UTC](https://community.nginx.org/t/converting-string-ip-address-to-binary-address/5061 "2025-06-10T16:13:53Z")

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What I’m trying to do: I have previously successfully implemented Rate limiting in an NGINX reverse proxy - excerpt: geo $limit { default 0; # Unknown users 123.456.78.999 1; # Known user IP ...…