network, through the internet, to a corporate VPN gatewaythat acts as a front door to the compatible corporate network.The VPN client uses IP Security (IPSec) technology. IPSec is aframework of open standards for supporting the secureexchange of data over IP networks.VPN policies define the method used by the VPN client and aVPN gateway to authenticate each other, and the encryptionalgorithms that they use to help protect the confidentialityof data.To install and configure the VPN client, certificates, andpolicies, contact the IT administrator of your organisation.19. Green tipsHere are tips on how you can contribute toprotecting the environment.Save energyWhen you have fully charged the battery and disconnectedthe charger from the device, remember to also unplug thecharger from the wall outlet.RecycleDid you remember to recycle your old device? 65-80% of thematerials in a Nokia mobile phone can be recycled. Alwaysreturn your used electronic products, batteries, andpackaging materials to a dedicated collection point. By doingthis, you help prevent uncontrolled waste disposal andpromote the recycling of materials. Check how to recycle yourNokia products at www.nokia.com/werecycle orwww.nokia.mobi/werecycle.You may recycle the packaging and user guides at your localGreen tips