To handle the 'Authentication Required' pop up using selenium from Firefox web driver you can use the following web driver code:
where 'NXTest' will be your user name and 'Test123' the password.
Hope this tip is of some help.
baseUrl = "https://NXTest:Test123@apwms.qa.redbond.net/ui/";
driver.get(baseUrl); where 'NXTest' will be your user name and 'Test123' the password.
Hope this tip is of some help.