# Security Sandbox

**URL:** <https://forum.kirupa.com/t/security-sandbox/263792>\
**Category:** flash\
**Created:** [June 19, 2008, 9:16am UTC](https://forum.kirupa.com/t/security-sandbox/263792 "2008-06-19T09:16:26Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![gnitsuk](https://avatars.discourse-cdn.com/v4/letter/g/0ea827/32.png) [@gnitsuk](https://forum.kirupa.com/u/gnitsuk)\
**Post date:** [June 19, 2008, 9:16am UTC](https://forum.kirupa.com/t/security-sandbox/263792/1 "2008-06-19T09:16:26Z")

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Hi, can anyone help me with this please?

I’m developing with Flash CS3 on a machine which has no internet access.

My swf is embedded in a webpage and I use ExternalInterface to make calls between the actionscript and javascript.

All works fine when hosted on a server but not locally. I read in the help file:

“For local content running in a browser, calls to the ExternalInterface.addCallback() method will only work if the SWF and the containing web page are in the local-trusted security sandbox”.

How can I add my swf and webpage to this sandbox?

When working on a machine with internet access I can right-click on the swf and use the advanced privacy settings button but my dev machine is not online.

Thanks for any help,  
Mitch.

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**Author:** ![gnitsuk](https://avatars.discourse-cdn.com/v4/letter/g/0ea827/32.png) [@gnitsuk](https://forum.kirupa.com/u/gnitsuk)\
**Post date:** [June 19, 2008, 9:40am UTC](https://forum.kirupa.com/t/security-sandbox/263792/2 "2008-06-19T09:40:03Z")

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No worries - solved it! For those who may be interested:

[http://livedocs.adobe.com/flash/8/main/wwhelp/wwhimpl/common/html/wwhelp.htm?context=LiveDocs\_Parts&file=00001613.html#244861](http://livedocs.adobe.com/flash/8/main/wwhelp/wwhimpl/common/html/wwhelp.htm?context=LiveDocs_Parts&file=00001613.html#244861)