ZyWALL 70 User’s Guide
620
Appendix G Wireless LANs
The Message Integrity Check (MIC) is designed to prevent an attacker from capturing data
packets, altering them and resending them. The MIC provides a strong mathematical function
in which the receiver and the transmitter each compute and then compare the MIC. If they do
not match, it is assumed that the data has been tampered with and the packet is dropped.
By generating unique data encryption keys for every data packet and by creating an integrity
checking mechanism (MIC), TKIP makes it much more difficult to decrypt data on a Wi-Fi
network than WEP, making it difficult for an intruder to break into the network.
The encryption mechanisms used for WPA and WPA-PSK are the same. The only difference
between the two is that WPA-PSK uses a simple common password, instead of user-specific
credentials. The common-password approach makes WPA-PSK susceptible to brute-force
password-guessing attacks but it’s still an improvement over WEP as it employs an easier-to-
use, consistent, single, alphanumeric password.
Security Parameters Summary
Refer to this table to see what other security parameters you should configure for each
Authentication Method/ key management protocol type. MAC address filters are not
dependent on how you configure these security features.
Roaming
A wireless station is a device with an IEEE 802.11 mode compliant wireless adapter. An
access point (AP) acts as a bridge between the wireless and wired networks. An AP creates its
own wireless coverage area. A wireless station can associate with a particular access point
only if it is within the access point’s coverage area.
Table 241
Wireless Security Relational Matrix
AUTHENTICATION
METHOD/ KEY
MANAGEMENT PROTOCOL
ENCRYPTION
METHOD
ENTER
MANUAL KEY
ENABLE IEEE 802.1X
Open None
No
No
Open
WEP
No
Enable with Dynamic WEP Key
Yes
Enable without Dynamic WEP Key
Yes
Disable
Shared
WEP
No
Enable with Dynamic WEP Key
Yes
Enable without Dynamic WEP Key
Yes
Disable
WPA WEP
No
Yes
WPA TKIP
No
Yes
WPA-PSK WEP
Yes
Yes
WPA-PSK
TKIP
Yes
Yes
Summary of Contents for ZyWALL 70
Page 1: ...ZyWALL 70 Internet Security Appliance User s Guide Version 3 64 3 2005 ...
Page 2: ......
Page 38: ...ZyWALL 70 User s Guide 38 List of Figures ...
Page 46: ...ZyWALL 70 User s Guide 46 List of Tables ...
Page 74: ...ZyWALL 70 User s Guide 74 Chapter 2 Introducing the Web Configurator ...
Page 92: ...ZyWALL 70 User s Guide 92 Chapter 3 Wizard Setup ...
Page 102: ...ZyWALL 70 User s Guide 102 Chapter 4 LAN Screens ...
Page 108: ...ZyWALL 70 User s Guide 108 Chapter 5 Bridge Screens ...
Page 130: ...ZyWALL 70 User s Guide 130 Chapter 6 Wireless LAN ...
Page 136: ...ZyWALL 70 User s Guide 136 Chapter 7 WAN Screens Figure 45 WAN General ...
Page 155: ...ZyWALL 70 User s Guide Chapter 7 WAN Screens 155 Figure 55 Dial Backup Setup ...
Page 234: ...ZyWALL 70 User s Guide 234 Chapter 13 Introduction to IPSec ...
Page 275: ...ZyWALL 70 User s Guide Chapter 15 Certificates 275 Figure 125 My Certificate Details ...
Page 294: ...ZyWALL 70 User s Guide 294 Chapter 16 Authentication Server Figure 136 Local User Database ...
Page 314: ...ZyWALL 70 User s Guide 314 Chapter 17 Network Address Translation NAT ...
Page 318: ...ZyWALL 70 User s Guide 318 Chapter 18 Static Route ...
Page 324: ...ZyWALL 70 User s Guide 324 Chapter 19 Policy Route ...
Page 340: ...ZyWALL 70 User s Guide 340 Chapter 20 Bandwidth Management ...
Page 376: ...ZyWALL 70 User s Guide 376 Chapter 22 Remote Management ...
Page 390: ...ZyWALL 70 User s Guide 390 Chapter 24 Logs Screens Figure 194 Log Settings ...
Page 413: ...ZyWALL 70 User s Guide Chapter 25 Maintenance 413 Figure 216 Restart Screen ...
Page 414: ...ZyWALL 70 User s Guide 414 Chapter 25 Maintenance ...
Page 440: ...ZyWALL 70 User s Guide 440 Chapter 28 WAN and Dial Backup Setup ...
Page 456: ...ZyWALL 70 User s Guide 456 Chapter 31 DMZ Setup ...
Page 460: ...ZyWALL 70 User s Guide 460 Chapter 32 Route Setup ...
Page 470: ...ZyWALL 70 User s Guide 470 Chapter 33 Remote Node Setup ...
Page 522: ...ZyWALL 70 User s Guide 522 Chapter 39 System Information Diagnosis ...
Page 538: ...ZyWALL 70 User s Guide 538 Chapter 40 Firmware and Configuration File Maintenance ...
Page 550: ...ZyWALL 70 User s Guide 550 Chapter 42 Remote Management ...
Page 558: ...ZyWALL 70 User s Guide 558 Chapter 43 IP Policy Routing ...
Page 573: ...ZyWALL 70 User s Guide Chapter 45 Troubleshooting 573 Figure 360 Java Sun ...
Page 574: ...ZyWALL 70 User s Guide 574 Chapter 45 Troubleshooting ...
Page 582: ...ZyWALL 70 User s Guide 582 Appendix B Removing and Installing a Fuse ...
Page 602: ...ZyWALL 70 User s Guide 602 Appendix D IP Subnetting ...
Page 608: ...ZyWALL 70 User s Guide 608 Appendix F PPTP ...
Page 626: ...ZyWALL 70 User s Guide 626 Appendix H Triangle Route ...
Page 656: ...ZyWALL 70 User s Guide 656 Appendix K Importing Certificates ...
Page 658: ...ZyWALL 70 User s Guide 658 Appendix L Command Interpreter ...
Page 664: ...ZyWALL 70 User s Guide 664 Appendix M Firewall Commands ...
Page 668: ...ZyWALL 70 User s Guide 668 Appendix N NetBIOS Filter Commands ...
Page 674: ...ZyWALL 70 User s Guide 674 Appendix P Brute Force Password Guessing Protection ...
Page 696: ...ZyWALL 70 User s Guide 696 Appendix R Log Descriptions ...