The VPN software allows you not only to connect to CESGA in a secure way but also to access internal resources that you can not reach otherwise.
Gateway: gateway.cesga.es
Port: 443
Username: your email address registered at CESGA
Password: your password in the supercomputers
unrar e vpn-fortissl.rar
tar xvzf forticlientsslvpn_linux_4.4.2323.tar.gz
cd forticlientsslvpn
./fortisslvpn.sh
Accept the license agreement presented
../forticlientsslvpn_cli \
--server gateway.cesga.es:443 \
--vpnuser usuario@dominio.com
For more info check the VPN section of the User Guide