Subject: How to prevent someone others from pointing their domains to your EC2 instance
Author: AwsEC2
Posted on: 09/17/2012 01:45:31 PM
Technically, you can not do anything prevent this kind of things happening, just like you can not forbid anyone naming their dog after yours. DNS routing table is in their controls. The only thing you can do is to control what you can control -- more or less refusing the traffic.
For web traffic, you can set up one or more virtual hosts for your own domains and a default entry catching everything else. If someone ends up on your server through a misconfigured domain, you can hand back with an error message or an redirect to your default page.
If you have a security concern about middle-man hi-jacking your traffic, you can set up one more defense barrier at application level by checking domain name before serving any sensible requests.
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