ZyXEL NBG318S v2 User Guide - Page 122
Privacy and Powerline Adapters
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Chapter 10 HomePlug AV After configuring the settings on all adapters (see Section 10.3 on page 124) your computer can now connect to the powerline network and to the Internet. Your powerline network can be further expanded by plugging additional powerline adapters into other outlets in your home and connecting other computers or network devices (for example, a printer) to them. In this User's Guide the electrical wiring network may be referred to as the "powerline network". " Your NBG318S is only compatible with ZyXEL HomePlug AV products with the latest firmware. You can upgrade your other ZyXEL HomePlug AV products by downloading the latest firmware from the ZyXEL website (www.zyxel.com). 10.2 Privacy and Powerline Adapters When the NBG318S communicates with each other HomePlug AV compliant powerline adapters, they use encryption to scramble the information that is sent in the powerline network. Encryption is like a secret code. If you do not know the secret code, you cannot understand the message. The HomePlug AV standard uses 128-bit AES (Advanced Encryption Standard) to safely transmit data between powerline adapters. For the NBG318S and powerline adapters to communicate with each other they all need to use the same Network Membership Key (NMK). Otherwise, they cannot unscramble the encrypted data sent in the powerline network. The NMK is derived from the network password you assign to the NBG318S and powerline adapters. By default all HomePlug powerline adapters are configured with the network password HomePlugAV. This allows all HomePlug powerline adapters and the NBG318S to communicate with each other without any software configuration. This also means that if you don't change the network password, any HomePlug AV powerline adapter connected to your powerline circuit can see your network data. " Change the network password on your powerline adapters to ensure secure data transmission on your powerline network. 10.2.1 Setting Up a Private Powerline Network To prevent others compromising your network security, you can create a private network. Create a private network by changing the network password only on the powerline adapters you want to communicate in your network. The NBG318S and powerline adapters convert the network password to a Network Membership Key (NMK). Only the powerline adapters with the same NMK can communicate in your network. The following figure shows a scenario A - where all the powerline adapters have the same NMK (NMK1) and scenario B - where some adapters use NMK1 and some use NMK2. 122 NBG318S User's Guide