PhoneFactor is a free phone-based two-factor authentication system. It works with any phone. The free service includes unlimited users and authentication (domestic U.S. calls are free) and seamlessly integrates with any VPN appliance (Cisco, Juniper, F5, Sonicwall, etc.), Enterprise Applications (Citrix and Microsoft Outlook Web Access), and websites. Just install the PhoneFactor agent directly on the server to be protected. PhoneFactor works simply by placing a confirmation call to your phone during login. You simply answer your phone and press # to confirm the login. This simple process provides two separate factors of authentication through two separate channels (your computer and your phone): Something you know your password. Something you have your telephone. PhoneFactor is a professional-grade security solution that can be installed and configured in minutes. There are no tokens to mail, no hardware to buy, and no licensing fees to pay.