First things first, download Forinet SSL VPN Software
In order to install the Fortinet SSL VPN under Ubuntu 14.04 64 bit, you will need to install some dependencies to get it to execute.
bash: ./forticlientsslvpn: No such file or directory
This means you do not have 32 bit compatibility installed.
Issue the following commands to install the require software to run Fortinet SSL VPN.
You should now be able to VPN into your coorporate network without issue.