Two-Factor / Dual-Factor Authentication

Two-Factor / Dual-Factor Authentication

There are several third-party software products available that enable two-factor authentication.  One third party software option is Duo Security (www.duo.com) which provides two-factor authentication for RDP access (and more) where you have to enter a code during RDP login that you receive on your smartphone first.  Duo has a free personal account for up to 10 users, trials and various other paid levels.