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ZyXEL G-302 v3 User Guide - Page 77

ZyXEL G-302 v3 User's Guide, Appendix C Wireless Security, WPA-PSK Authentication, WPA2 with RADIUS

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Figure 48 WPA-PSK Authentication ZyXEL G-302 v3 User's Guide WPA(2) with RADIUS Application Example You need the IP address of the RADIUS server, its port number (default is 1812), and the RADIUS shared secret. A WPA(2) application example with an external RADIUS server looks as follows. "A" is the RADIUS server. "DS" is the distribution system. 1 The AP passes the wireless client's authentication request to the RADIUS server. 2 The RADIUS server then checks the user's identification against its database and grants or denies network access accordingly. 3 The RADIUS server distributes a Pairwise Master Key (PMK) key to the AP that then sets up a key hierarchy and management system, using the pair-wise key to dynamically generate unique data encryption keys to encrypt every data packet that is wirelessly communicated between the AP and the wireless clients. Figure 49 WPA(2) with RADIUS Application Example Appendix C Wireless Security 73

Section	Page
User’s Guide	1
Preface	3
Safety Warnings	5
Copyright	7
Certifications	8
ZyXEL Limited Warranty	10
Customer Support	11
Table of Contents	17
List of Figures	21
List of Tables	23
Getting Started	25
1.1 About Your G-302 v3	25
1.1.1 Windows Vista Users	25
1.1.2 Application Overview	25
1.1.2.1 Infrastructure	26
1.1.2.2 Ad-Hoc	26
1.2 G-302 v3 Hardware and Utility Installation	27
1.3 Configuration Methods	27
1.4 Windows XP Users Only	27
1.5 Accessing the ZyXEL Utility	28
1.6 ZyXEL Utility Screen Summary	29
1.7 Connecting to a Wireless LAN	29
1.7.1 Site Survey	29
Wireless LAN Network	33
2.1 Wireless LAN Overview	33
2.1.1 SSID	33
2.1.2 Channel	33
2.1.3 Transmission Rate	33
2.2 Wireless LAN Security Overview	33
2.2.1 Data Encryption with WEP	34
2.2.2 IEEE 802.1x	34
2.2.2.1 EAP Authentication	34
2.2.3 WPA and WPA2	35
2.2.3.1 Encryption	35
2.2.3.2 User Authentication	35
2.2.4 WPA(2)-PSK Application Example	35
2.2.5 WPA(2) with RADIUS Application Example	36
2.3 Authentication Type	37
2.4 Preamble Type	37
ZyXEL Utility Configuration	39
3.1 The Link Info Screen	39
3.1.1 Trend Chart	40
3.2 The Site Survey Screen	41
3.2.1 Connecting to a WLAN Network	42
3.2.2 Security Settings	42
3.2.2.1 WEP Encryption	43
3.2.2.2 WPA/WPA2	44
3.2.2.3 WPA-PSK/WPA2-PSK	45
3.2.3 Confirm Save Screen	46
3.3 The Profile Screen	46
3.3.1 Adding a New Profile	48
3.4 The Adapter Screen	52
Maintenance	53
4.1 The About Screen	53
4.2 Uninstalling the ZyXEL Utility	53
4.3 Upgrading the ZyXEL Utility	54
Troubleshooting	55
5.1 Problems Starting the ZyXEL Utility	55
5.2 Problem with the Link Quality	55
5.3 Problems Communicating With Other Computers	56
5.4 Windows Vista Users - How To Start WLAN AutoConfig	56
Product Specifications	59
Management with Wireless Zero Configuration	61
Activating Wireless Zero Configuration	61
Connecting to a Wireless Network	62
Security Settings	65
Association	66
Authentication	67
Ordering the Preferred Networks	70
Wireless Security	73
Types of EAP Authentication	73
EAP-MD5 (Message-Digest Algorithm 5)	73
EAP-TLS (Transport Layer Security)	73
EAP-TTLS (Tunneled Transport Layer Service)	74
PEAP (Protected EAP)	74
LEAP	74
Dynamic WEP Key Exchange	74
WPA(2)	75
Encryption	75
User Authentication	76
WPA(2)-PSK Application Example	76
WPA(2) with RADIUS Application Example	77
Security Parameters Summary	78
Index	79
A	79
C	79
D	79
E	79
F	79
G	79
H	79
I	79
L	79
M	79
N	80
O	80
P	80
Q	80
R	80
S	80
T	80
U	80
V	80
W	80

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ZyXEL G-302 v3 User’s Guide

Appendix C Wireless Security

Figure 48

WPA-PSK Authentication

WPA(2) with RADIUS Application Example

You need the IP address of the RADIUS server, its port number (default is 1812), and the

RADIUS shared secret. A WPA(2) application example with an external RADIUS server

looks as follows. "A" is the RADIUS server. "DS" is the distribution system.

The AP passes the wireless client's authentication request to the RADIUS server.

The RADIUS server then checks the user's identification against its database and grants

or denies network access accordingly.

The RADIUS server distributes a Pairwise Master Key (PMK) key to the AP that then

sets up a key hierarchy and management system, using the pair-wise key to dynamically

generate unique data encryption keys to encrypt every data packet that is wirelessly

communicated between the AP and the wireless clients.

Figure 49

WPA(2) with RADIUS Application Example