How do I deny certain IP addresses from accessing my site on Cloud Sites?
Visitors to a Cloud Site come through our load balancers, which means the IP address reported to your site will be that of our load balancers. We store the visitor's IP address in the X-Cluster-Client-Ip variable to work around this behavior. The value of X-Cluster-Client-Ip can be used when configuring allow and deny rules.
For instructions, see Controlling access to Linux Cloud Sites based on the client IP address.
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