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Chapter 17. Understanding Security > About domains, cross-domain security, and ...

About domains, cross-domain security, and SWF files

By default, Flash Player 7 and later versions prevent a SWF file served from one domain from reading data, objects, or variables from SWF files that are served from different domains. In addition, content that is loaded through nonsecure (non-HTTPS) protocols cannot read content loaded through a secure (HTTPS) protocol, even when both are in exactly the same domain. For example, a SWF file located at http://www.macromedia.com/main.swf cannot load data from https://www.macromedia.com/data.txt without explicit permission; neither can a SWF file served from one domain load data (using loadVars(), for example) from another domain.

Identical numeric IP addresses are compatible. However, a domain name is not compatible with an IP address, even if the domain name resolves to the same IP address.


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