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Appendix D Wireless LANs
ZyXEL NWA-3100 User’s Guide
254
• Access-Reject
Sent by a RADIUS server rejecting access.
• Access-Accept
Sent by a RADIUS server allowing access.
• Access-Challenge
Sent by a RADIUS server requesting more information in order to allow access. The
access point sends a proper response from the user and then sends another Access-Request
message.
The following types of RADIUS messages are exchanged between the access point and the
RADIUS server for user accounting:
• Accounting-Request
Sent by the access point requesting accounting.
• Accounting-Response
Sent by the RADIUS server to indicate that it has started or stopped accounting.
In order to ensure network security, the access point and the RADIUS server use a shared
secret key, which is a password, they both know. The key is not sent over the network. In
addition to the shared key, password information exchanged is also encrypted to protect the
network from unauthorized access.
Types of Authentication
This appendix discusses some popular authentication types:
EAP-MD5
,
EAP-TLS
,
EAP-
TTLS
,
PEAP
and
LEAP
.
The type of authentication you use depends on the RADIUS server or the AP. Consult your
network administrator for more information.
EAP-MD5 (Message-Digest Algorithm 5)
MD5 authentication is the simplest one-way authentication method. The authentication server
sends a challenge to the wireless station. The wireless station ‘proves’ that it knows the
password by encrypting the password with the challenge and sends back the information.
Password is not sent in plain text.
However, MD5 authentication has some weaknesses. Since the authentication server needs to
get the plaintext passwords, the passwords must be stored. Thus someone other than the
authentication server may access the password file. In addition, it is possible to impersonate an
authentication server as MD5 authentication method does not perform mutual authentication.
Finally, MD5 authentication method does not support data encryption with dynamic session
key. You must configure WEP encryption keys for data encryption.
Содержание NWA-3100
Страница 1: ...www zyxel com NWA 3100 802 11a b g Wireless Access Point User s Guide Version 3 60 10 2006 Edition 1...
Страница 2: ......
Страница 7: ...Safety Warnings ZyXEL NWA 3100 User s Guide 7...
Страница 8: ...Safety Warnings ZyXEL NWA 3100 User s Guide 8...
Страница 10: ...Contents Overview ZyXEL NWA 3100 User s Guide 10...
Страница 24: ...List of Figures ZyXEL NWA 3100 User s Guide 24...
Страница 28: ...List of Tables ZyXEL NWA 3100 User s Guide 28...
Страница 29: ...29 PART I Introduction Introducing the ZyXEL Device 31 Introducing the Web Configurator 39 Tutorial 43...
Страница 30: ...30...
Страница 60: ...Chapter 3 Tutorial ZyXEL NWA 3100 User s Guide 60...
Страница 62: ...62...
Страница 104: ...Chapter 7 MBSSID and SSID ZyXEL NWA 3100 User s Guide 104...
Страница 116: ...Chapter 9 IP Screen ZyXEL NWA 3100 User s Guide 116...
Страница 132: ...Chapter 11 Remote Management ZyXEL NWA 3100 User s Guide 132...
Страница 150: ...Chapter 12 Certificates ZyXEL NWA 3100 User s Guide 150...
Страница 174: ...Chapter 14 VLAN ZyXEL NWA 3100 User s Guide 174...
Страница 184: ...Chapter 15 Maintenance ZyXEL NWA 3100 User s Guide 184...
Страница 186: ...186...
Страница 198: ...Chapter 20 System Password ZyXEL NWA 3100 User s Guide 198...
Страница 228: ...228...
Страница 232: ...Appendix A Product Specifications ZyXEL NWA 3100 User s Guide 232...
Страница 244: ...Appendix B Setting up Your Computer s IP Address ZyXEL NWA 3100 User s Guide 244...
Страница 248: ...Appendix C IP Address Assignment Conflicts ZyXEL NWA 3100 User s Guide 248...
Страница 258: ...Appendix D Wireless LANs ZyXEL NWA 3100 User s Guide 258...
Страница 282: ...Appendix H Text File Based Auto Configuration ZyXEL NWA 3100 User s Guide 282...
Страница 286: ...Appendix I Legal Information ZyXEL NWA 3100 User s Guide 286...