openvpn-auth-ldap software package provides OpenVPN LDAP authentication module, 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 openvpn-auth-ldap
openvpn-auth-ldap is installed in your system.
Make ensure the openvpn-auth-ldap package were installed using the commands given below,
$ sudo dpkg-query -l | grep openvpn-auth-ldap *
You will get with openvpn-auth-ldap package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Network |
| Package | openvpn-auth-ldap |
| Version | 2.0.3-5.1 |
| Description | OpenVPN LDAP authentication module |
| Sub Section | Net |