Outside the NTNU network you need VPN (virtual private network) to access your home directory and many software licenses. A description on how to install and use VPN can be found here.

Ubuntu
If you get this error message when following the instructions in the link above:

Installing Cisco AnyConnect Secure Mobility Client...
Extracting installation files to /tmp/vpn.Wtonhe/vpninst881667482.tgz...
Unarchiving installation files to /tmp/vpn.Wtonhe...
Starting Cisco AnyConnect Secure Mobility Client Agent...
Failed to start vpnagentd.service: Unit vpnagentd.service not found.

Then try to install these packages first (link):

$ sudo apt-get update
$ sudo apt-get install lib32z1 lib32ncurses5
$ sudo apt-get install network-manager-openconnect

Alternatively, you may try this.