I was trying to connect to Cisco VPN using AnyConnect Mobility Client. I tried to download the client from the VPN server  but for some reason the downloadable client from the VPN server itself didn't work so I had to download it from here .

Step #1 | Install Dependencies

apt-get install lib32z1 lib32ncurses-dev lib32ncursesw6 libpangox-1.0-0 libcanberra-gtk-module libgtk2.0-0

Step #2 | Install AnyConnect Client

tar -xzf anyconnect-linux64-4.6.02074-predeploy-k9.tar.gz
cd anyconnect-linux64-4.6.02074/vpn
sudo ./vpn_install.sh

Now you can connect