The process of automatically deploying an SSL setup by visiting a webpage requires your web-browser have Java support enabled. There are however plenty of negative ones as well. Those are some of the positive aspects of an SSL VPN solution. In view of the above your network manager may not allow using anything other than SSL VPN even if your particular Cisco or Juniper appliance supports them.
CISCO ANYCONNECT OS X 10.10.5 INSTALL
Now network managers have chosen to use SSL only VPN solutions for a multitude of reasons including the following. What maybe possible is to reconfigure your either Cisco VPN server, or Juniper VPN server to enable one of these three standards as well or instead of SSL. None of those can connect to an SSL VPN server.
The built-in VPN clients in Yosemite and earlier are.