Right click on the network icon in the system tray and then click "Open Network and Sharing Center".
Click "Set up a new connection or network".
Select "Connect to a workplace" and click "Next".
Click "Use my Internet connection (VPN)".
Fill form with values shown below. Check "Don't connect now..." and then click "Next".
Internet address: au-nsw.trust.zone
Destination name: Trust.Zone-Australia-New-South-Wales
Enter your Trust.Zone's VPN login credentials, check "Remember this password" and then click "Create".
Click "Close" in order to close wizard.
Click "Change adapter settings" in left pane of "Network and Sharing center".
Left click the VPN network adapter and then click "Change settings of this connection".
Switch to the tab "Security", select Type of VPN "Layer 2 Tunneling Protocol with IPsec (L2TP/IPsec)" and take over the settings from the screenshot. Then click on "Advanced settings".
Choose "Use preshared key...", the key is: trustzone and click "OK". Then click "OK" again in order to close connection properties.
Click the network icon in the system tray, select VPN connection Trust.Zone-Australia-New-South-Wales and click "Connect".
Click "Connect" in dialog window.
If connection has been successfully established, it displays "Connected". You can manage your VPN connections in the "Network and Sharing Center" > "Change adapter settings".
Your IP: x.x.x.x · Australia · You are in TRUST.ZONE now! Your real location is hidden!