dv.cfg is for special "trusted" mode.
used for local (file:///)

http://www.adobe.com/devnet/flash/articles/fplayer8_security.html
http://www.jeffreybian.com/1/post/2011/05/macromedia-flash-local-file-access.html
http://habrahabr.ru/blogs/Flash_Platform/132718/
http://help.adobe.com/en_US/flex/using/WS2db454920e96a9e51e63e3d11c0bf6167e-7fce.html
http://natejc.com/blog/category/as-networking/


# Windows all users:

<system>\Macromed\Flash\FlashPlayerTrust

(e.g. c:\WINNT\system32\Macromed\Flash\FlashPlayerTrust)
# Windows single user:

<app data>\Macromedia\Flash Player\#Security\FlashPlayerTrust

(e.g. c:\Documents and Settings\fred\Application Data\Macromedia\Flash Player\#Security\FlashPlayerTrust)

