Advanced Wireless Communications MINI PRO Podręcznik Użytkownika Pobierz pdf (Strona 71)

Wired Equivalent Privacy (WEP) uses encryption to help prevent unauthorized reception of

wireless data. WEP uses an encryption key to encrypt data before transmitting it. Only

computers that use the same encryption key can access the network and decrypt the data

transmitted by other computers. WEP encryption provides for two levels of security, using a

64-bit key (sometimes referred to as 40-bit) or a 128-bit key (also known as 104-bit). For

stronger security, you should use a 128-bit key. If you use encryption, all wireless devices

on your wireless network must use the same encryption keys.

With WEP data encryption, a wireless station can be configured with up to four keys (the key

index values are 1, 2, 3, and 4). When an access point (AP) or a wireless station transmits

an encrypted message that uses a key stored in a specific key index, the transmitted

message indicates the key index that was used to encrypt the message body. The receiving

AP or wireless station can then retrieve the key that is stored at the key index and use it to

decode the encrypted message body

Because the WEP encryption algorithm is vulnerable to network attacks, you should consider

using WPA-Personal or WPA2-Personal security.

WPA-Personal

WPA-Personal Mode is targeted to home and small business environments. WPA Personal

requires manual configuration of a pre-shared key (PSK) on the access point and clients. No

authentication server is needed. The same password entered at the access point needs to be

used on this computer and all other wireless devices that access the wireless network.

Security depends on the strength and secrecy of the password. The longer the password,

the stronger the security of the wireless network. If your wireless access point or router

supports WPA-Personal and WPA2-Personal then you should enable it on the access point

and provide a long, strong password. WPA-Personal makes available the TKIP and AES-

CCMP data encryption algorithms.

WPA2-Personal

WPA2-Personal requires manual configuration of a pre-shared key (PSK) on the access point

and clients. No authentication server is needed. The same password entered at the access

point needs to be used on this computer and all other wireless devices that access the

wireless network. Security depends on the strength and secrecy of the password. The longer

the password, the stronger the security of the wireless network. WPA2 is an improvement

over WPA and implements the full IEEE 802.11i standard. WPA2 is backward compatible with

WPA. WPA2-Personal makes available the TKIP and AES-CCMP data encryption algorithms.

NOTE: WPA-Personal and WPA2-Personal are interoperable.

802.1X Authentication (Enterprise Security)

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Advanced Wireless Communications MINI PRO Podręcznik Użytkownika Strona 71