libpam-duo software package provides PAM module for Duo Security two-factor authentication, you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install libpam-duo
libpam-duo is installed in your system.
Make ensure the libpam-duo package were installed using the commands given below,
$ sudo dpkg-query -l | grep libpam-duo *
You will get with libpam-duo package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Libraries |
| Package | libpam-duo |
| Version | 1.9.6-1 |
| Description | PAM module for Duo Security two-factor authentication |
| Sub Section | libs |