Block apps to use internet

Hi,

I can block any installed app to use internet connection on Windows 7 by giving the executable file's directory on Windows Firewall.
(http://maketecheasier.com/block-application-access-to-internet-from-cont... )

But the same thing does not work for portable apps.

Windows 7 can only block the apps which installed?

Is there any possibility to block the portable apps to use internet connection?

Thank you!