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htaccess IP whitelisted rule behind load balancer
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| # See: http://www.jonathanquail.com/blog/2012/05/09/restricting-access-to-servers-behind-an-elastic-load-balancer/ | |
| # Extract client IP | |
| #SetEnvIf REMOTE_ADDR "(.+)" CLIENTIP=$1 | |
| # If request is forwarded, use forwarded IP instead | |
| SetEnvIf X-Forwarded-For "^([0-9.]+)" CLIENTIP=$1 | |
| # If request is not forwarded, set a flag | |
| SetEnvIf X-Forwarded-For "^$" is_not_forwarded | |
| # Whitelist | |
| SetEnvIf CLIENTIP "173.55.53.87" allowed_in | |
| SetEnvIf CLIENTIP "72.67.47.197" allowed_in | |
| # Rules | |
| Order deny,allow | |
| Deny from all | |
| # Allow whitelisted forwarded IP | |
| Allow from env=allowed_in | |
| # Allow request which is not forwarded (healthcheck) | |
| Allow from env=is_not_forwarded | |
| # Remove comment from the following line to let everyone in | |
| #Allow from all |
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