Wep Faqs - GoVideo D2740 User Manual

WEP FAQs

What is WEP?
WEP (Wired Equivalent Privacy) is a security protocol
for wireless local area networks (WLANs) defined in
the 802.11b/g standard. WEP is designed to provide
the same level of security as that of a wired LAN. Wired
LANs are inherently more secure being somewhat
protected from unauthorized access by their physical
structure. WLANs, which are over radio waves do not
have the same physical structure, and consequently,
are more vulnerable to tampering. WEP aims to provide
security by encrypting the data over radio waves so
that it is protected as it is transmitted.
• To minimize the risk of radio frequency (RF)
interception, WEP is specified for encryption and
authentication between clients and access points
according to the 802.11 standard. WEP security is
based on an encryption algorithm known as "RC4" .
The encryption algorithm is generated based on a
key entered and controlled by the user. All clients
and access points are configured with the same key
for encrypting and decrypting data transmissions.
WEP keys are 40 or 128 bits in length.
• The length of the encryption key determines the
level of encryption. 128-bit WEP devices can be used
with 40 or 64-bit WEP devices provided that the
device driver has a way to set the lower encryption
level. If a device is capable of 128-bit encryption, it
is inherently capable of 40-bit encryption (unless
the vendor decides for some reason to not allow the
lower encryption level).
• The lower level of WEP encryption uses a 40 bit (10
hexadecimal character) "secret key" (set by the user),
and a 24 bit "Initialization Vector" (not under user
control). Some vendors refer to this level of WEP as
40-bit, others as 64-bit. In fact, they're the same level
of encryption and can interoperate.
• The higher level of WEP encryption, commonly
referred to as 128-bit WEP, actually uses a 104 bit (26
hexadecimal character) "secret key" (set by the user),
and a 24-bit "Initialization Vector" (not under user
control).
• It can be confusing to get wireless products from
different manufacturers to work together.The key to
success is to pay attention to the WEP key formats
that must be used for each product.
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DVD Player User's Guide
What is the Format of your WEP Key?
Wireless networks typically require you to enter the
WEP key in ASCII (regular alpha-numeric characters),
decimal, or hexadecimal (hex) format. Refer to the
documentation provided for your wireless network to
determine the format of your WEP key.
Tip: Some access points refer to an encryption key as
a "passphrase" . Passphrases are always in ASCII format.
Please note that the letters are case-sensitive.
What Format does the D2740 require?
The D2740 can accept WEP encryption keys in either
hexadecimal or ASCII format. Use the chart on page 61
to convert the WEP key between the various formats
(decimal, hexadecimal, or ASCII).
For example
The hexadecimal conversion for an ASCII encryption
key of "EE7Da" is as follows:
ASCII
E
E
7
D
a
Tips on entering WEP codes
• One ASCII character is eight (8) bits
• One HEX character is four (4) bits
• A 40 or 64 bit ASCII WEP code has 5 characters
• A 40 or 64 bit HEX WEP code has 10 characters
• A 128 bit ASCII WEP code has 13 characters
• A 128 bit HEX WEP code has 26 characters
Hexadecimal
45
45
37
44
61