Irule for closing the connection

You may not be able to close the browser window as expected using javascript (at least not across all browsers) due to security restrictions for the

window.close()

function. I believe most browsers today will only allow you to close a window that has been opened by script (see here for example). Otherwise the command will most likely do nothing (though I think in IE it will prompt the user to close the tab/window) (see here for a StackOverflow answer about the question).

What you may need to end up doing it directing the user to a custom deny page if they decline and customize it through the APM configuration section (Access Policy >> Customization) to tell them to close the window.