ZyXEL Communications Zyair B-1000 v.2, Руководство пользователя

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ZyAIR Access Point Series User’s Guide
viii Table of Contents
5.1 Wireless LAN Overview............................................................................................................5-1
5.1.1 IBSS...................................................................................................................................5-1
5.1.2 BSS ....................................................................................................................................5-1
5.1.3 ESS ....................................................................................................................................5-2
5.2 Wireless LAN Basics.................................................................................................................5-3
5.2.1 RTS/CTS............................................................................................................................5-3
5.2.2 Fragmentation Threshold ...................................................................................................5-4
5.3 Spanning Tree Protocol (STP) ...................................................................................................5-5
5.3.1 Rapid STP ..........................................................................................................................5-5
5.3.2 STP Terminology...............................................................................................................5-5
5.3.3 How STP Works ................................................................................................................5-6
5.3.4 STP Port States ..................................................................................................................5-6
5.4 Configuring Wireless .................................................................................................................5-6
5.4.1 Access Point Mode ............................................................................................................5-7
5.4.2 Multiple ESS Mode............................................................................................................5-9
5.4.3 Bridge/Repeater Mode .......................................................................................................5-9
5.4.4 AP+Bridge Mode.............................................................................................................5-12
5.5 Configuring Roaming ..............................................................................................................5-14
5.5.1 Requirements for Roaming ..............................................................................................5-15
Chapter 6 Wireless Security........................................................................................................................6-1
6.1 Wireless Security Overview.......................................................................................................6-1
6.2 WEP Overview ..........................................................................................................................6-1
6.2.1 Data Encryption .................................................................................................................6-2
6.2.2 Authentication....................................................................................................................6-2
6.3 Configuring WEP Encryption....................................................................................................6-3
6.4 MAC Filter.................................................................................................................................6-6
6.5 802.1x Overview........................................................................................................................6-7
6.6 Introduction to Local User Database..........................................................................................6-7
6.7 Introduction to RADIUS............................................................................................................6-7
6.7.1 EAP Authentication Overview...........................................................................................6-8
6.8 Dynamic WEP Key Exchange ...................................................................................................6-9
6.9 Introduction to WPA................................................................................................................6-10
6.9.1 User Authentication .........................................................................................................6-10
6.9.2 Encryption........................................................................................................................6-10
6.10 WPA-PSK Application Example .............................................................................................6-11
6.11 WPA with RADIUS Application Example..............................................................................6-11
6.12 Security Parameters Summary .................................................................................................6-12
6.13 Wireless Client WPA Supplicants ...........................................................................................6-13
6.14 Configuring 802.1x and WPA .................................................................................................6-13
6.14.1 Authentication Required: 802.1x .....................................................................................6-14
6.14.2 Authentication Required: WPA .......................................................................................6-17