Network Manager needs the Openconnect plugin first.
sudo apt-get install network-manager-openconnect network-manager-openconnect-gnome
sudo yum install NetworkManager-openconnect
In Network Manager, go to
VPN Connections > Configure VPN > Add
Cisco Anyconnect Compatible VPN
Enter the following settings:
Click save, and then activate the VPN in Network Manager.
VPN Connections > [your vpn]
You will be prompted for a username and password on connecting.