Welcat GTX-100, Руководство пользователя

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Chapter 3 System menu
3-28
■Authentication
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●Method
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・ Open
"Open Authentication" system.
If an authentication request frame from a terminal (GTX-100)
is received, an access point will reply with an authentication
response frame, which will permit data communications.
When WEP is valid, authentication is possible but data com-
munications cannot be performed if both WEP keys do not
match.
・ Shared
"Shared Key Authentication" system.
If a terminal performs an authentication request, an access
point will transmit a non-encrypted identity request authentica-
tion text character string (hereinafter called as "challenge
code"). Then, the terminal replies a challenge code encrypted
using the WEP key. The access point decrypts the challenge
code via the WEP key and checks to see if it is the same as the
transmitted challenge code and if the same, permits authentica-
tion.
・ EAP
"EAP"(IEEE802.1X) Authentication system.
If this authentication method is used, Certificate, Private key,
user information setting etc. is needed. There is a limitation
also in the environment (Certification Authority (CA), authen-
tication (RADIUS) server etc.) that can be used. Therefore,
when using the "EAP" authentication method, please contact
our sales department.
If the challenge code before and after encryption is intercepted by a
third person, the WEP key is easily determined. The "Shared Key
Authentication" system thus creates a security weak point and
should not be used whenever possible.
Some access points do not disclose their authentication type. In this
case, please try "Open Authentication," and if connection is impos-
sible, try "Shared Key Authentication."