Openserver is the ability to prevent uploading of content from the Internet?

Good day.
If there is a possibility OpenServer or somewhere in the settings of Apache, htaccess, not allowed to load content from outside?
The point is that all the pictures, etc. of referencing addresses to external addresses (Internet) - didn't load.
June 8th 19 at 17:08
3 answers
June 8th 19 at 17:10
Plugin in chrome: website-whitelist
June 8th 19 at 17:12
Not because they are not openserver loads, and the user's browser. Because forbid the browser.
But you can send the header Content-Security-Policy, which indicates to the browser what external sources are allowed to upload any type of external content (works only in modern browsers)
June 8th 19 at 17:14
It actually won't work the server and browser, as soon as I see a link to external content.
In a simple case, looking for the source code href-"...", src="..." and see whether it contains an http(s)://, // the parameter value.
In the complex case, if the authors of the script generate links on-the-fly - long and difficult to analyze.

Reliable option is to start the server and the browser in a virtual machine (oracle virtualbox, vmware player), which does not included access to the Internet.

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