VPN is one of the most widely used solution for implementing secure communications outside the periphery of the organization. However, the password based authentication remains a point of failure in such scenarios. There is a need to add additional authentication factors in the solution. Due to widely used standard solutions, it is preferable to use existing solutions with such an add-on. Customize any popular open-source VPN solution to enable secure authentication using additional authentication methods such as asymmetric key cryptography, biometric or OTP methods.  Apart from username and password, it should have 2 more authentication mechanism.

Note: Users can use widely popular open source VPN solutions such as OpenVPN.

Sample Data Required: None