ZyXEL Communications ZYAIR B-4000 User manual

ZyAIR B-4000
Hot Spot Gateway
User's Guide
Version 1.00
July 2003

ZyAIR B-4000 Hot Spot Gateway
ii Copyright
Copyright
Copyright © 2003 by ZyXEL Communications Corporation.
The contents of this publication may not be reproduced in any part or as a whole, transcribed, stored in a
retrieval system, translated into any language, or transmitted in any form or by any means, electronic,
mechanical, magnetic, optical, chemical, photocopying, manual, or otherwise, without the prior written
permission of ZyXEL Communications Corporation.
Published by ZyXEL Communications Corporation. All rights reserved.
Disclaimer
ZyXEL does not assume any liability arising out of the application or use of any products, or software
described herein. Neither does it convey any license under its patent rights nor the patent rights of others.
ZyXEL further reserves the right to make changes in any products described herein without notice. This
publication is subject to change without notice.
Trademarks
ZyNOS (ZyXEL Network Operating System) is a registered trademark of ZyXEL Communications, Inc.
Other trademarks mentioned in this publication are used for identification purposes only and may be
properties of their respective owners.

ZyAIR B-4000 Hot Spot Gateway
FCC Statement iii
Federal Communications Commission
(FCC) Interference Statement
This device complies with Part 15 of FCC rules. Operation is subject to the following two conditions:
• This device may not cause harmful interference.
• This device must accept any interference received, including interference that may cause undesired
operations.
This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to
Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a commercial environment. This equipment generates, uses, and can radiate radio frequency
energy, and if not installed and used in accordance with the instructions, may cause harmful interference to
radio communications.
If this equipment does cause harmful interference to radio/television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of
the following measures:
1. Reorient or relocate the receiving antenna.
2. Increase the separation between the equipment and the receiver.
3. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
4. Consult the dealer or an experienced radio/TV technician for help.
Notice 1
Changes or modifications not expressly approved by the party responsible for compliance could void the
user's authority to operate the equipment.
Certifications
Refer to the product page at www.zyxel.com.

ZyAIR B-4000 Hot Spot Gateway
iv ZyXEL Warranty
ZyXEL Limited Warranty
ZyXEL warrants to the original end user (purchaser) that this product is free from any defects in materials
or workmanship for a period of up to two years from the date of purchase. During the warranty period, and
upon proof of purchase, should the product have indications of failure due to faulty workmanship and/or
materials, ZyXEL will, at its discretion, repair or replace the defective products or components without
charge for either parts or labor, and to whatever extent it shall deem necessary to restore the product or
components to proper operating condition. Any replacement will consist of a new or re-manufactured
functionally equivalent product of equal value, and will be solely at the discretion of ZyXEL. This warranty
shall not apply if the product is modified, misused, tampered with, damaged by an act of God, or subjected
to abnormal working conditions.
Note
Repair or replacement, as provided under this warranty, is the exclusive remedy of the purchaser. This
warranty is in lieu of all other warranties, express or implied, including any implied warranty of
merchantability or fitness for a particular use or purpose. ZyXEL shall in no event be held liable for
indirect or consequential damages of any kind of character to the purchaser.
To obtain the services of this warranty, contact ZyXEL's Service Center for your Return Material
Authorization number (RMA). Products must be returned Postage Prepaid. It is recommended that the unit
be insured when shipped. Any returned products without proof of purchase or those with an out-dated
warranty will be repaired or replaced (at the discretion of ZyXEL) and the customer will be billed for parts
and labor. All repaired or replaced products will be shipped by ZyXEL to the corresponding return address,
Postage Paid. This warranty gives you specific legal rights, and you may also have other rights that vary
from country to country.
Safety Warnings
1. To reduce the risk of fire, use only No. 26 AWG or larger telephone wire.
2. Do not use this product near water, for example, in a wet basement or near a swimming pool.
3. Avoid using this product during an electrical storm. There may be a remote risk of electric shock from
lightening.

ZyAIR B-4000 Hot Spot Gateway
Customer Support v
Customer Support
Please have the following information ready when you contact customer support.
• Product model and serial number.
• Warranty Information.
• Date that you received your device.
• Brief description of the problem and the steps you took to solve it.
METHOD
LOCATION
E-MAIL
SUPPORT/SALES
TELEPHONE/FAX WEB SITE/ FTP SITE REGULAR MAIL
[email protected]m.tw [phone] www.zyxel.com
www.europe.zyxel.com
WORLDWIDE
[e-mail] [phone] ftp.europe.zyxel.com
ZyXEL Communications Corp.,
6 Innovation Road II, Science-
Based Industrial Park, Hsinchu
300, Taiwan.
[email protected]m [phone] www.us.zyxel.comNORTH
AMERICA
[e-mail] ftp.zyxel.com
[email protected] [phone] www.zyxel.dkSCANDINAVIA
[e-mail] [phone] ftp.zyxel.dk
ZyXEL Communications A/S,
Columbusvej 5, 2860 Soeborg,
Denmark.
[email protected] [phone] www.zyxel.deGERMANY
[e-mail] [phone]
ZyXEL Deutschland GmbH.
Adenauerstr. 20/A2 D-52146
Wuerselen, Germany

ZyAIR B-4000 Hot Spot Gateway
vi Table of Contents
Table of Contents
Copyright....................................................................................................................................................... ii
Federal Communications Commission (FCC) Interference Statement ..................................................iii
ZyXEL Limited Warranty.......................................................................................................................... iv
Customer Support ........................................................................................................................................ v
List of Figures ............................................................................................................................................... x
List of Tables.............................................................................................................................................. xiii
Preface ........................................................................................................................................................ xiv
Getting Started...............................................................................................................................................I
Chapter 1 Getting to Know Your ZyAIR ................................................................................................1-1
1.1 Introducing the ZyAIR.................................................................................................................1-1
1.2 Features........................................................................................................................................1-1
1.3 Applications.................................................................................................................................1-5
1.3.1 Internet Access for LAN Networks......................................................................................1-5
1.3.2 Internet Access in Public Areas ...........................................................................................1-5
Chapter 2 The Web Configurator ............................................................................................................2-1
2.1 Introducing the Web Configurator...............................................................................................2-1
2.2 Accessing the Web Configurator .................................................................................................2-1
2.3 Wizard Setup Screens ..................................................................................................................2-2
2.4 Navigating the Web Configurator................................................................................................2-2
2.4.1 The Navigation Tabs............................................................................................................2-2
2.4.2 Sub-menu Panels..................................................................................................................2-3
2.5 Login Accounts............................................................................................................................2-3
2.5.1 Changing Login Account Usernames and Passwords..........................................................2-4
2.6 Methods of Restoring Factory-Defaults.......................................................................................2-5
2.6.1 The Reset Button .................................................................................................................2-6
2.6.2 Web Configurator ................................................................................................................2-6
2.7 Restarting the ZyAIR...................................................................................................................2-7
2.8 Logging Out of the Web Configurator.........................................................................................2-7
Chapter 3 General System Setup..............................................................................................................3-1
3.1 General System Settings ..............................................................................................................3-1
Chapter 4 WAN, LAN and Server Setup.................................................................................................4-1
4.1 Factory Ethernet Defaults ............................................................................................................4-1
4.2 LANs and WANs.........................................................................................................................4-1
4.3 IP Address Assignment................................................................................................................4-1
4.4 DHCP Configuration ...................................................................................................................4-1
4.4.1 IP Address and Subnet Mask ...............................................................................................4-2
4.4.2 Private IP Addresses ............................................................................................................4-2
4.5 DNS Server Address....................................................................................................................4-2
4.6 PPPoE ..........................................................................................................................................4-3

ZyAIR B-4000 Hot Spot Gateway
Table of Contents vii
4.6.1 PPP MTU .............................................................................................................................4-3
4.6.2 TCP MSS .............................................................................................................................4-3
4.7 PPTP ............................................................................................................................................4-4
4.8 Configuring the WAN and LAN Settings ....................................................................................4-4
4.9 Server Configuration....................................................................................................................4-6
Subscriber Account Management ..............................................................................................................II
Chapter 5 Authentication..........................................................................................................................5-1
5.1 About the Built-in Authentication................................................................................................5-1
5.2 Authentication Settings ................................................................................................................5-1
Chapter 6 Accounting................................................................................................................................6-1
6.1 About Subscriber Accounts..........................................................................................................6-1
6.1.1 Time-to-finish Accounting Method......................................................................................6-1
6.2 Accounting Settings .....................................................................................................................6-1
6.3 Creating Accounts........................................................................................................................6-5
6.3.1 Creating Accounts in the Web Configurator........................................................................6-5
6.3.2 Using the Exclusive Printer to Create and Print Subscriber Statements...............................6-6
6.4 Viewing the Account List ............................................................................................................6-7
Chapter 7 Subscriber Login Screen .........................................................................................................7-1
7.1 About the Subscriber Login Screen..............................................................................................7-1
7.2 Customizing the Subscriber Login Screen ...................................................................................7-1
7.2.1 Standard Subscriber Login Screen .......................................................................................7-2
7.2.2 Redirect Subscriber Login Screen ........................................................................................7-3
7.2.3 Advanced Subscriber Login Screen .....................................................................................7-4
7.2.4 Framed Subscriber Login Screen .........................................................................................7-7
Advanced Subscriber Account Management........................................................................................... III
Chapter 8 Advertisement Links and Walled Garden .............................................................................8-1
8.1 Advertisement Links and Walled Garden Overview....................................................................8-1
8.2 Advertisement Links ....................................................................................................................8-1
8.3 Walled Garden .............................................................................................................................8-2
8.3.1 Walled Garden Login Example............................................................................................8-4
Chapter 9 Syslog ........................................................................................................................................9-1
9.1 Syslog Configuration ...................................................................................................................9-1
Chapter 10 Wireless LAN .......................................................................................................................10-1
10.1 Wireless LAN Overview............................................................................................................10-1
10.1.1 IBSS ...................................................................................................................................10-1
10.1.2 BSS ....................................................................................................................................10-1
10.1.3 ESS.....................................................................................................................................10-2
10.2 Wireless LAN Basics .................................................................................................................10-3
10.2.1 Channel ..............................................................................................................................10-3
10.2.2 WEP Encryption.................................................................................................................10-3
10.2.3 RTS/CTS............................................................................................................................10-3

ZyAIR B-4000 Hot Spot Gateway
viii Table of Contents
10.2.4 Fragmentation Threshold ...................................................................................................10-5
10.2.5 Preamble Type ...................................................................................................................10-5
10.3 Wireless LAN Setup ..................................................................................................................10-5
10.3.1 Configuring WEP Keys .....................................................................................................10-8
System Status, System Tools and Troubleshooting..................................................................................IV
Chapter 11 System Status .......................................................................................................................11-1
11.1 About System Status..................................................................................................................11-1
11.2 View System Information ..........................................................................................................11-1
11.3 Account List...............................................................................................................................11-4
11.4 Account Log ..............................................................................................................................11-4
11.5 Current Users .............................................................................................................................11-6
11.6 DHCP Clients ............................................................................................................................11-7
11.7 Session List................................................................................................................................11-8
Chapter 12 Configuration, Firmware and Accounting Log Maintenance.......................................... 12-1
12.1 Filename Conventions ...............................................................................................................12-1
12.2 Firmware Upgrade .....................................................................................................................12-1
12.2.1 Manual Firmware Upgrade ................................................................................................12-1
12.2.2 Scheduled Firmware Upgrade............................................................................................12-2
12.3 Configuration File Maintenance ................................................................................................12-4
12.3.1 Backup Configuration........................................................................................................12-4
12.3.2 Restore Configuration........................................................................................................12-6
12.3.3 Backup Accounting Logs...................................................................................................12-7
Chapter 13 SSL (Secure Socket Layer) Security ..................................................................................13-1
13.1 About SSL .................................................................................................................................13-1
13.2 Activating SSL Security for Management Connections ............................................................ 13-1
13.3 Viewing and Installing the SSL Security Certificate .................................................................13-2
13.4 Activating SSL Security for Subscriber Logins......................................................................... 13-7
13.5 SSL Certificate Download .........................................................................................................13-7
Chapter 14 Troubleshooting ...................................................................................................................14-1
14.1 Using LEDs to Diagnose Problems ...........................................................................................14-1
14.1.1 The Power LED .................................................................................................................14-1
14.1.2 The LAN Port LEDs ..........................................................................................................14-1
14.1.3 The WAN Port LED ..........................................................................................................14-1
14.2 Web Configurator ......................................................................................................................14-2
14.3 Internet Access........................................................................................................................... 14-3
14.4 The Statement Printer ................................................................................................................ 14-3
ADDITIONAL INFORMATION............................................................................................................... V
Appendix A Setting up Your Computer’s IP Address .......................................................................... A-1
Appendix B IP Address Assignment Conflicts ....................................................................................... B-1
Appendix C Wireless LAN and IEEE 802.11 .........................................................................................C-1
Appendix D Antenna Selection and Positioning Recommendation...................................................... D-1

ZyAIR B-4000 Hot Spot Gateway
Table of Contents ix
Appendix E PPPoE ...................................................................................................................................E-1
Appendix F PPTP ..................................................................................................................................... F-1
Appendix G IP Subnetting ...................................................................................................................... G-1
Appendix H Subscriber Login ................................................................................................................ H-1
Appendix I Cable Types and Cable Pin Assignments............................................................................. I-1
Appendix J Index .......................................................................................................................................J-1

ZyAIR B-4000 Hot Spot Gateway
x List of Figures
List of Figures
Figure 1-1 Application: Internet Access for LAN Networks.......................................................................1-5
Figure 1-2 Application: Internet Access in Public Areas.............................................................................1-6
Figure 2-1 Entering ZyAIR IP Address in Internet Explorer.......................................................................2-1
Figure 2-2 Web Configurator: Login...........................................................................................................2-2
Figure 2-3 Web Configurator Navigation....................................................................................................2-3
Figure 2-4 System Tools: System Account..................................................................................................2-4
Figure 2-5 Side Panel...................................................................................................................................2-6
Figure 2-6 Default Settings..........................................................................................................................2-6
Figure 2-7 Restart ........................................................................................................................................2-7
Figure 2-8 Logging Out ...............................................................................................................................2-7
Figure 3-1 System........................................................................................................................................3-1
Figure 4-1 WAN/LAN.................................................................................................................................4-4
Figure 4-2 Server .........................................................................................................................................4-7
Figure 5-1 System Settings: Authentication ................................................................................................5-1
Figure 6-1 Accounting.................................................................................................................................6-2
Figure 6-2 Printout Label Preview Example................................................................................................6-5
Figure 6-3 Account Generator Panel ...........................................................................................................6-5
Figure 6-4 Account Information Printout Example .....................................................................................6-6
Figure 6-5 Account List...............................................................................................................................6-7
Figure 7-1 Login Page .................................................................................................................................7-2
Figure 7-2 Subscriber Login Screen Example: Standard.............................................................................7-2
Figure 7-3 Subscriber Login Screen: Redirect.............................................................................................7-3
Figure 7-4 Subscriber Login Screen: Redirect Code ...................................................................................7-4
Figure 7-5 Subscriber Login Screen: Advanced ..........................................................................................7-5
Figure 7-6 Subscriber Login Screen: Color Grid.........................................................................................7-6
Figure 7-7 Subscriber Login Screen Example: Advanced...........................................................................7-7
Figure 7-8 Subscriber Login Screen: Frame................................................................................................7-7
Figure 7-9 Subscriber Login Screen Example: Frame.................................................................................7-8
Figure 8-1 Advertisement ............................................................................................................................8-1
Figure 8-2 Walled Garden ...........................................................................................................................8-3
Figure 8-3 Walled Garden Login Example.................................................................................................. 8-4
Figure 9-1 Syslog Configuration .................................................................................................................9-2
Figure 10-1 IBSS (Ad-hoc) Wireless LAN................................................................................................10-1
Figure 10-2 Basic Service set ....................................................................................................................10-2
Figure 10-3 Extended Service Set..............................................................................................................10-2
Figure 10-4 RTS/CTS................................................................................................................................10-4
Figure 10-5 Wireless..................................................................................................................................10-6
Figure 10-6 WEP Key Setup .....................................................................................................................10-9
Figure 11-1 System....................................................................................................................................11-2

ZyAIR B-4000 Hot Spot Gateway
List of Figures xi
Figure 11-2 Account Log...........................................................................................................................11-5
Figure 11-3 Current User List....................................................................................................................11-6
Figure 11-4 DHCP Clients.........................................................................................................................11-7
Figure 11-5 Session List ............................................................................................................................11-8
Figure 12-1 Firmware Upgrade..................................................................................................................12-1
Figure 12-2 System Restart........................................................................................................................12-2
Figure 12-3 Scheduled Firmware Upgrade ................................................................................................12-3
Figure 12-4 Synchronization Check File Example ....................................................................................12-4
Figure 12-5 Backup/Restore ......................................................................................................................12-5
Figure 12-6 Configuration Backup: File Download Example....................................................................12-5
Figure 12-7 Configuration Backup: Save As .............................................................................................12-6
Figure 12-8 System Tools: Importing Configuration File..........................................................................12-6
Figure 12-9 Backup Accounting Logs .......................................................................................................12-7
Figure 12-10 Backup Accounting Logs: File Download ...........................................................................12-7
Figure 12-11 Backup Accounting Logs: Save As ......................................................................................12-8
Figure 12-12 Backup Accounting Logs: Example .....................................................................................12-8
Figure 13-1 System Settings: Server Configuration: Enable SSL Security ...............................................13-1
Figure 13-2 Install the SSL Security Certificate: First Security Alert .......................................................13-2
Figure 13-3 Install the SSL Security Certificate: Second Security Alert ...................................................13-2
Figure 13-4 Install the SSL Security Certificate: View Certificate............................................................13-3
Figure 13-5 Install the SSL Security Certificate: Certificate Import Wizard.............................................13-4
Figure 13-6 Certificate Import Wizard: Location ......................................................................................13-4
Figure 13-7 Certificate Import Wizard: Finish...........................................................................................13-5
Figure 13-8 Root Certificate Store.............................................................................................................13-5
Figure 13-9 Certificate Import Wizard.......................................................................................................13-6
Figure 13-10 Certificate: Details................................................................................................................13-6
Figure 13-11 Security Alert: Trusted .........................................................................................................13-7
Figure 13-12 Authentication: Activate SSL Login ....................................................................................13-7
Figure 13-13 SSL Certificate Download....................................................................................................13-8

ZyAIR B-4000 Hot Spot Gateway
Lists of Tables xiii
List of Tables
Table 1-1802.11B.........................................................................................................................................1-3
Table 1-2 ZyAIR Wireless LAN Coverage..................................................................................................1-4
Table 2-1 System Tools: System Account ...................................................................................................2-5
Table 2-2 Default Settings ...........................................................................................................................2-7
Table 3-1 System .........................................................................................................................................3-2
Table 4-1 WAN/LAN ..................................................................................................................................4-5
Table 4-2 Server...........................................................................................................................................4-7
Table 5-1 System Settings: Authentication..................................................................................................5-1
Table 6-1 Accounting...................................................................................................................................6-3
Table 6-2 Account List ................................................................................................................................6-7
Table 7-1 Subscriber Login Screen: Redirect ..............................................................................................7-3
Table 7-2 Subscriber Login Screen: Advanced............................................................................................7-5
Table 7-3 Subscriber Login Screen: Frame..................................................................................................7-8
Table 8-1 Advertisement..............................................................................................................................8-2
Table 8-2 Walled Garden.............................................................................................................................8-4
Table 9-1 Syslog Configuration ...................................................................................................................9-3
Table 10-1 Wireless ...................................................................................................................................10-6
Table 10-2 WEP Key Setup .......................................................................................................................10-9
Table 11-1 System .....................................................................................................................................11-3
Table 2 Account Log..................................................................................................................................11-5
Table 11-3 Current User List .....................................................................................................................11-7
Table 11-4 DHCP Clients ..........................................................................................................................11-7
Table 11-5 Session List..............................................................................................................................11-8
Table 12-1 Scheduled Firmware Upgrade .................................................................................................12-3
Table 13-1 SSL Certificate Download.......................................................................................................13-8
Table 14-1 Troubleshooting Power LED ...................................................................................................14-1
Table 14-2 Troubleshooting LAN LEDs ...................................................................................................14-1
Table 14-3 Troubleshooting WAN LEDs ..................................................................................................14-2
Table 14-4 Troubleshooting the Web Configurator ...................................................................................14-2
Table 14-5 Troubleshooting the Internet Browser Display........................................................................14-3
Table 14-6 Troubleshooting Internet Access .............................................................................................14-3
Table 14-7 Troubleshooting the Statement Printer ....................................................................................14-4

ZyAIR B-4000 Hot Spot Gateway
xiv Preface
Preface
Congratulations on your purchase of the ZyXEL ZyAIR B-4000 Hot Spot Gateway.
The ZyAIR Hot Spot Gateway combines an 802.11b wireless access point, router, 4-port switch and service
gateway in one box. An “exclusive printer” connects directly to the ZyAIR, allowing you to easily print
subscriber statements. The ZyAIR is ideal for offices, coffee shops, libraries, hotels and airport terminals
catering to subscribers that seek Internet access. You should have an Internet account already set up and
have been given usernames, passwords etc. required for Internet access.
This user’s guide is designed to guide you through the configuration of your ZyAIR using the web
configurator.
Related Documentation
 Supporting Disk
Refer to the included CD for support documents.
 Quick Installation Guide
Our Quick Installation Guide is designed to help you get up and running right away. It contains
information on the hardware connections and installation.
 ZyXEL Web Site
The ZyXEL download library at www.zyxel.com contains additional support documentation.
Please also refer to www.zyxel.com for an online glossary of networking terms.
User Guide Feedback
Help us help you. E-mail all User Guide-related comments, questions or suggestions for improvement to
[email protected] or send regular mail to The Technical Writing Team, ZyXEL Communications
Corp., 6 Innovation Road II, Science-Based Industrial Park, Hsinchu, 300, Taiwan. Thank you.
Syntax Conventions
• “Enter” means for you to type one or more characters (and press the carriage return). “Select” or
“Choose” means for you to use one predefined choices.
• Enter, or carriage return, key; [ESC] means the escape key and [SPACE BAR] means the space bar.
[UP] and [DOWN] are the up and down arrow keys.
• Mouse action sequences are denoted using a comma. For example, “click the Apple icon, Control
Panels and then Modem” means first click the Apple icon, then point your mouse pointer to Control
Panels and then click Modem.
• For brevity’s sake, we will use “e.g.,” as a shorthand for “for instance”, and “i.e.,” for “that is” or “in
other words” throughout this manual.

ZyAIR B-4000 Hot Spot Gateway
Preface xv
• The ZyXEL ZyAIR B-4000 Hot Spot Gateway may be referred to as the “ZyAIR” in this manual.
• The ZyXEL ZyAIR SP-100 Statement Printer may be referred to as the “statement printer” or the
“exclusive printer” in this manual.

Getting Started
I
P
Pa ar rt t I I: :
Getting Started
This part introduces the ZyAIR, the web configurator and general system setup.

ZyAIR B-4000 Hot Spot Gateway
Getting to Know Your ZyAIR 1-1
Chapter 1
Getting to Know Your ZyAIR
This chapter introduces the features and applications of the ZyAIR.
1.1 Introducing the ZyAIR
The ZyAIR Hot Spot Gateway combines an 802.11b wireless access point, router, 4-port switch and service
gateway in one box. An “exclusive printer” connects directly to the ZyAIR, allowing you to easily print
subscriber statements. The ZyAIR is ideal for offices, coffee shops, libraries, hotels and airport terminals
catering to subscribers that seek Internet access. You should have an Internet account already set up and
have been given usernames, passwords etc. required for Internet access.
1.2 Features
Your ZyAIR provides the following features to accommodate subscribers with a variety of network
configurations with little or no technical support.
Plug-and-Play Internet Access
The ZyAIR provides Internet access to attached computer(s) without extra software installation or
computer configuration. In addition, with transparent proxy, the ZyAIR resolves any incompatible proxy
settings.
WEP Data Encryption
WEP (Wired Equivalent Privacy) data encryption helps ensure the security of data on the wireless LAN.
The ZyAIR supports 64, 128 and 256 bit WEP encryption.
VPN (Virtual Private Network) Pass Through
The ZyAIR allows subscribers to create VPN networks (which use data encryption and the Internet to
provide secure communications) that go through the ZyAIR.
VLAN
The ZyAIR can use VLANs (Virtual Local Area Network) to partition the physical network into multiple
logical networks in order to stop subscribers from seeing each other’s data. The ZyAIR also provides a
port-based VLAN via the four 10/100Mbps auto-negotiating Ethernet ports.
SSL Secure Login

ZyAIR B-4000 Hot Spot Gateway
1-2 Getting to Know Your ZyAIR
With Secure Socket Layer (SSL) activated upon login, data exchanged between the ZyAIR and client
computers are encrypted and protected.
PPTP Support
Point-to-Point Tunneling Protocol (PPTP) is a network protocol that enables secure transfer of data from a
remote client to a private server, creating a Virtual Private Network (VPN) using a TCP/IP-based network.
PPTP supports on-demand, multi-protocol and virtual private networking over public networks, such as the
Internet. Use PPTP to connect to a broadband modem to achieve access to high-speed data networks via a
familiar "dial-up networking" user interface.
PPPoE Support (RFC2516)
PPPoE (Point-to-Point Protocol over Ethernet) emulates a dial-up connection. It allows your ISP to use
their existing network configuration with newer broadband technologies such as ADSL. The PPPoE driver
on the ZyAIR is transparent to the computers on the LAN, which see only Ethernet and are not aware of
PPPoE thus saving you from having to manage PPPoE clients on individual computers.
Network Address Translation (NAT)
NAT (Network Address Translation - NAT, RFC 1631) allows the translations of multiple IP addresses
used within one network to different IP addresses known within another network.
DHCP Support
DHCP (Dynamic Host Configuration Protocol) allows the individual computers (DHCP clients) to obtain
TCP/IP configuration at start-up from a centralized DHCP server. The ZyAIR has built-in DHCP server
capability. It can assign IP addresses, an IP default gateway and DNS servers to DHCP clients. The ZyAIR
can also act as a surrogate DHCP server (DHCP Relay) where it relays IP address assignment from the
actual real DHCP server to the DHCP clients.
E-mail Forwarding
The ZyAIR is able to forward and retrieve e-mail messages when the subscriber’s default email server is
down or behind a firewall.
DNS Proxy
With DNS proxy, the ZyAIR provides DNS redirection when a subscriber’s configured DNS server is
behind a firewall or located in a private Intranet.
Local Subscriber Database
The ZyAIR allows you to maintain a subscriber database on the ZyAIR without setting up an external
RADIUS server. Subscriber accounting and authentication are done using the local subscriber database.
Accounting
Accounting can be done using the built-in accounting feature.