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October 11, 2019 01:54
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A hack to log real IP addresses on share Apache hosting behind CloudFlare (or other) reverse proxy
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| # Set environment variables from request headers and add them to User-Agent header | |
| # it's not much but it works | |
| # Requirements: | |
| # 1 - mod_setenvif (http://httpd.apache.org/docs/current/mod/mod_setenvif.html) | |
| # 2 - mod_headers (http://httpd.apache.org/docs/current/mod/mod_headers.html) | |
| <IfModule mod_setenvif.c> | |
| # Add envirinment variables from a request header | |
| SetEnvIf CF-Connecting-IP "^(.+)$" CF_Connecting_IP=$1 | |
| </IfModule> | |
| <IfModule mod_headers.c> | |
| # This adds the variable only if it exists | |
| RequestHeader append "User-Agent" "CFIP=%{CF_Connecting_IP}e" env=CF_Connecting_IP | |
| RequestHeader append "User-Agent" "XFF=%{HTTP_X_FORWARDED_FOR}e" env=HTTP_X_FORWARDED_FOR | |
| </IfModule> |
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