Daily Archives: March 31, 2016


Real IP from Amazon Load Balancers

If you are running an EC2 instance behind an Amazon Elastic Load Balancer (ELB), you’ll find that the visitors’ IPs are hided behind the load balancer, so your application cannot get the clients’ real IPs. In fact, visitors’ original IPs are passed via a X-Forwarded-For information in the header (http://docs.aws.amazon.com/ElasticLoadBalancing/latest/DeveloperGuide/x-forwarded-headers.html), […]