I've, more or less, following configuration on AWS: Elastic load balancer with 3 machines o 3 different availability zones. My security group allows 0.0.0.0/0:80 as it's my rails application (nginx, ...
I was wanting to block a list of specific hosts, specifically so my server has no access to them at all. I tried using host2ip and entering the result into IP tables , but the IPs don't seem to lead ...
With Apache2, or iptables, is there a way to refuse visitors if their IP has no reverse DNS, or does not resolve at all? I have a website targeted to a specific population who has valid reverse DNS. ...