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http.realip

This plugin allows you to see the actual client IP from X-Forwarded-For headers if you are running behind a CDN or Proxy. It will make it so logs and other downstream directives will see the actual client IP, not the proxy's. Implements security measures so that X-Forwarded-For cannot be spoofed from unauthorized IP ranges.

Full documentation

Examples

Accept X-Forwarded-For from known IPs only

casketfile
realip {
  from 1.2.3.4/32
  from 2.3.4.5/32
}

Cloudflare Preset

casketfile
realip cloudflare

Automatically adds cloudflare ips to allowed set.