Cisco AnyConnect VPN (Open Connect)

http://tomtomtom.org/networkmanager-openconnect/

Install Skype in Ubuntu system: 

sudo add-apt-repository "deb http://archive.canonical.com/ $(lsb_release -sc) partner"

Add i386 architecture

sudo dpkg --add-architecture i386

Update and install

sudo apt-get update && sudo apt-get install skype