Binary package “strongswan-plugin-unity” in ubuntu trusty

strongSwan plugin for IKEv1 Cisco Unity Extensions

 The strongSwan VPN suite uses the native IPsec stack in the standard
 Linux kernel. It supports both the IKEv1 and IKEv2 protocols.
 .
 This package provides the Unity plugin for strongSwan. It provides support for
 parts of the IKEv1 Cisco Unity Extensions.