VPN (virtual private network) extends a private network and the resources contained in the network across public networks like the Internet. It enables a host computer to send and receive data across shared or public networks as if it were a private network with all the functionality, security and management policies of the private network. This is done by establishing a virtual point-to-point connection through the use of dedicated connections, encryption, or a combination of the two.
Ubuntu does not come with the VPN tool and for those who needs it, here's what to do.
Install Java JDK
sudo apt-get install openjdk-7-jdk icedtea-7-plugin
Install Juniper VPN Software
mkdir ~/juniper_temp cd ~/juniper_temp wget https://github.com/udomsak/juniper-ncui/raw/master/ncLinuxApp.jar jar xf ncLinuxApp.jar chmod +x ./getx509certificate.sh ./getx509certificate.shIP_OF_THE_SECURE_ENV~/.vpn-secure.crt chmod go-rwx ~/.vpn-secure.crt chmod a+x ./ncsvc
Run this in a console, it will ask you for your password (don't run it in the background) It will keep running until you stop it.
sudo ./ncsvc -hIP_OF_THE_SECURE_ENV-uusername-f ~/.vpn-secure.crt
Once the password is entered, the connection will be now open to the secure environment. Simply open a new console and type:
Then to close the connection from the secure environment, simply hit control-c from the process that was running in the other console.