Netcom NB9 - Manual (Page 33)

NB9/NB9W ADSL+ VoIP Router 
YML790 Rev8
WEP and WPA
“WEP” stands for Wired Equivalent Privacy and was the original wireless security method. Over time it was
found to be vulnerable to attacks based on de-coding the ‘keys’ used to encrypt the data. While no longer
recommended for enterprise-level security, WEP is certainly secure from casual interception and will repel
any non-specialised attempt to join the network or intercept data; it can be penetrated with various kinds of
software tools and techniques but these are beyond the capability of the average computer user.
‘WPA’ stands for Wi-Fi Protected Access and is an improvement on WEP. WPA2 offers further refinements to WPA.
WPA and WPA2 both comprise a number of different wireless security elements and methods that can be adapted
to a variety of situations depending on the requirements. A lot of what is provided is applicable to enterprise-
level wireless networking, in other words, suitable for businesses who wish to deploy strict security methods and
policies for their employees. Accordingly, these technologies will exceed the requirements of home users.
An important element of WPA security is a RADIUS server (stands for Remote Access Dial-in User Service). The
RADIUS server typically sits in the server room of a business or department and authenticates and manages user
requests for connection. Home users will generally never have to bother about RADIUS server details.
In nearly all cases, the default security method, which is WEP, or WPA-PSK will provide adequate security for
home wireless networks.
Other wireless security elements shall be explained in context below.
Network Authentication
Network Authentication specifies the type of network authentication. The default value is ‘Shared’.
open: Under Open System authentication, any wireless station can request authentication.
Shared: Under Shared Key authentication, each wireless station is assumed to have received a secret shared
key over a secure channel that is independent from the 802.11 wireless network communications
channel (i.e. verbally). To use Shared Key authentication, you must have a network key assigned to the
clients trying to connect to your NB9W.
802.1X
802.1X security requires the presence of a RADIUS server, and specification of the IP address of a RADIUS
server, the port on which to connect to it, and the Shared Key used to authenticate with it.
Disregard this security setting unless you are setting up or connecting to a RADIUS server.