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Setting Wireless Security
Your cable modem/router comes from the factory with, security turned on by default. If you want
to use another security mode instead of the default security mode of
WPA-PSK/WPA2-PSK , or
if you want to change the Pre-Shared Key, this chapter explains how.
There are two basic wireless security modes, WPA and WEP. There are two versions of WPA: WPA
and WPA2. When configured as part of a typical home or small office network, WPA and WPA2
require a Pre-Shared Key, or PSK. These modes are typically called WPA-PSK and WPA2-PSK,
respectively, though sometimes they’re just called WPA and WPA2. You can enable either WPA-PSK
or WPA2-PSK alone, or you can enable both WPA-PSK and WPA2-PSK together. By default, your
cable modem/router has both WPA-PSK and WPA2-PSK enabled. You will only need to change the
security mode if you know that you have a device you are connecting to your wireless network that
only supports WEP. (Go to
Setting Up Security Using WEP .) In the unlikely event that you want
an unsecured network, this is discussed late in this chapter in Disabling Security .
Note: If you have a Radius Server (very unlikely for a home network), select the WPA/WPA2
options without PSK. All instances of WPA and/or WPA2 that follow refer to WPA-PSK and/or
WPA2-PSK unless noted otherwise.
You can check to see if all other clients that you plan to put on the network support WPA or WPA2.
You can do this by checking the manual that came with each device or by checking the configuration
software for the installed device. Look under
Security or Encryption or Setup or Advanced
Features . Appendix A discusses how to check the configuration software for various wireless
devices.
If all of the devices you want to connect to your wireless network support WPA or WPA2 you may
want to change the Pre-Shared Key and/or change the Network Name (SSID. In that case, go below
to
Changing the Pre-Shared Key and SSID from the default settings . For instructions on
configuring WPA/WPA2 Security with your devices, go to WPA/WPA2 Security .
If any of the devices you want to connect to your wireless network do not support WPA or WPA2, go
to
Setting Up Security Using WEP .
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