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www .zyxel.com NXC-8160 Business WLAN Controller User ’ s Guide Ve r s i o n 1 . 0 6/2007 Edition 1.
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About This User's Guide NXC-8160 User’s Guide 3 About This User's Guide Intended Audience This manual is intended for people who wa nt to configure the NXC-8160 using the web configurator . Y ou should have at leas t a basic knowledge of TCP/IP networking concepts and topology .
Document Conventions NXC-8160 User’s Guide 4 Document Conventions W arnings and Notes These are how warnings and notes are shown in this User ’ s Guide.
Document Conventions NXC-8160 User’s Guide 5 Icons Used in Figures Figures in this User ’ s Guide may use the following generic icons. NXC-8160 Computer Notebook computer Server Wireless Signal Mo.
Safety Warnings NXC-8160 User’s Guide 6 Safety Warnings 1 For your safety , be sure to read and follow all warni ng notices and instructions. • Do NOT use this product near water , for example, in a wet basement or near a swimming pool. • Do NOT expose your device to dampness, dust or corrosive liquids.
Safety Warnings NXC-8160 User’s Guide 7 • Antenna W arning! This device meets ETSI and FCC certification requirements when using the included antenna(s). On ly use the included antenna(s). • If you wall mount your device, make sure th at no electrical lines, gas or water pipes will be damaged.
Safety Warnings NXC-8160 User’s Guide 8.
Contents Overview NXC-8160 User’s Guide 9 Contents Overview Introduction .......................................... ........................................................................ .......... 21 Getting to Know Y our NXC-8160 .............. .
Contents Overview NXC-8160 User’s Guide 10.
Table of Contents NXC-8160 User’s Guide 11 Table of Contents About This User's Guide ................................................................ .......................................... 3 Document Conventions.............................
Table of Contents NXC-8160 User’s Guide 12 Chapter 3 LAN Screen................................................................. .................................................... . ........ 35 3.1 LAN and WAN ....... ................ ............
Table of Contents NXC-8160 User’s Guide 13 Chapter 7 Access Point s Screen ............... ..................................................................................... ....... .6 7 Chapter 8 Maintenance Screen ..............................
Table of Contents NXC-8160 User’s Guide 14.
List of Figures [Document Title] 15 List of Figures Figure 1 Wireless Internet Access ............... ............ ............. ............. ............. ................ .......... .......... ... 24 Figure 2 Backup NXC-8160 ........ ..............
List of Figure s [Document Title] 16 Figure 39 Windows XP: Advanced TCP/IP Properties .... ................ ............. ................ ............. ............. 94 Figure 40 Windows XP: Internet Pr otocol (TCP/IP) Properties ....................
List of Figures [Document Title] 17 Figure 82 RTS/CTS .............. ................ ............. ............. ................ ............. ................ ....... ................ . 130 Figure 83 WP A(2) with RADIUS Application Example . ......
List of Figure s [Document Title] 18.
List of Tables [Document Title] 19 List of Tables T able 1 Front Panel LED s (Lights) ..... ............. ................ ................ ............. ................ ............. .......... ... 26 T able 2 Title Bar: W e b Configurator Icon ....
List of Tables [Document Title] 20 T able 39 24-bit Network Number Subnet Planning ............... ............. ................ ............. ............. ......... 11 5 T able 40 16-bit Network Number Subnet Planning ............... ............. .
21 P ART I Introduction Getting to Know Y our NXC-8160 (23) Introducing the W eb Configurator (27).
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NXC-8160 User’s Guide 23 C HAPTER 1 Getting to Know Your NXC-8160 This chapter introduces the main featur es and applications of the NXC-8160. 1.1 NXC-8160 Overview The NXC-8160 is a WLAN controller that a llo ws you to connect the NW A-8500 access points (APs) to extend your wireless network.
Chapter 1 Getting to Know Your NXC-8160 NXC-8160 User’s Guide 24 Figure 1 Wireless Internet Access 1.2.2 Backup NXC-8160 T o ensure wireless Internet access availability , deploy on e NXC-8160 as the main WLAN controller and the other NXC-8160 as the backup.
Chapter 1 Getting to Kn ow Your NXC-8160 NXC-8160 User’s Guide 25 1.3 W ays to Manage the NXC-8160 Use any of the following method s to manage the NXC-8160. • W eb Configurator . This is recommended for everyday management of the NXC-8160 using a (s upported) w eb browser .
Chapter 1 Getting to Know Your NXC-8160 NXC-8160 User’s Guide 26 The following table describes the lights on the NXC-8160. T able 1 Front Panel LEDs (Lights) LED COLOR STATUS DESCRIPTION POWER Off The NXC-8160 is turned of f. Green On The NXC-8160 is ready and running.
NXC-8160 User’s Guide 27 C HAPTER 2 Introducing the Web Configurator This chapter describes how to access the NX C-8160 web configurator and provides an overview of its screens. 2.1 W eb Configurator Overview The web configur ator is an HTML-based mana ge ment interface that allows easy NXC-8160 setup and management via Internet browser .
Chapter 2 Introducing the Web Configur ator NXC-8160 User’s Guide 28 Figure 4 S tatus Screen As illustrated above, the main scr een is di vided into these parts: • A - title bar • B - main window • C - status bar • D - navigation panel 2.3.1 T i tle Bar The title bar provides a icon in the upper right corner .
Chapter 2 Introducing the Web Configurator NXC-8160 User’s Guide 29 Figure 5 Web Configur ator S tatus Screen The following table describes the labels in this screen.
Chapter 2 Introducing the Web Configur ator NXC-8160 User’s Guide 30 2.3.4 Navigation Panel Use the sub-menus on the nav igation panel to configure NXC-8160 features . The following table describes the sub-menus. 2.3.5 About Screen The About screen displays firmware in formation.
Chapter 2 Introducing the Web Configurator NXC-8160 User’s Guide 31 Figure 6 Web Configurator About Scre en The following table describes the r ead-only fields in this screen. T able 5 Web Configurat or About Scr een LABEL DESCRIPTION ZyXELFS This field displays th e firmwa re versi on number and the date created.
Chapter 2 Introducing the Web Configur ator NXC-8160 User’s Guide 32.
33 P ART II W eb Configurator LAN Screen (35) W ireless LAN (47).
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NXC-8160 User’s Guide 35 C HAPTER 3 LAN Screen This chapter describes how to configure LAN settings. 3.1 LAN and W AN A network is a shared commun ication system to which ma ny computers are attached.
Chapter 3 LAN Screen NXC-8160 User’s Guide 36 you are told otherwise. If y o u select 192.168.1.0 as the network number; it covers 254 individual addresses, from 192.
Chapter 3 LAN Screen NXC-8160 User’s Guide 37 3.3 VLAN A VLAN (V irtual Local Area Network) allows a physical network to be partitioned into multiple logical networks. Stations on a logical network can belong to more than one group. Only stations within the same group can talk to each other .
Chapter 3 LAN Screen NXC-8160 User’s Guide 38 This way , the device connected to port 1 on switch A can configure the NXC-8 160. Wireless clients connected to SSID x or y cannot manage the NXC-8160 itself, but they can communicate with port 2 or 3 on switch A and access the Internet.
Chapter 3 LAN Screen NXC-8160 User’s Guide 39 Figure 9 LAN The following table describes the labels in this screen. T able 6 LAN LABEL DESCRIPTION LAN Y ou can pre-configure two LAN IP addre sses, but only one is in use at a time. 192.168.1.10 is the default IP ad dress.
Chapter 3 LAN Screen NXC-8160 User’s Guide 40.
NXC-8160 User’s Guide 41 C HAPTER 4 Centralized Configuration This chapter describes cent ralized configuration. 4.1 Introduction to Centralized Configuration Centralized configuration allows you to conf igure multiple WLAN co ntrollers through one controller , called the master controller .
Chapter 4 Centr alized Configur ation NXC-8160 User’s Guide 42 Unlike T elnet or FTP , which transmit data in pl aintext (clear or unencrypted text), SSH is a secure communication pro tocol that combines authentication and data encryption to provide secure encrypted communication between two hosts over an unsec ured network.
Chapter 4 Centralized Configu ration NXC-8160 User’s Guide 43 1 Host Identification The SSH client sends a connection request to the SSH server . The server identifies itself with a host key . The client encrypts a rand omly generated session ke y with the host key and server key and sends the result back to the server .
Chapter 4 Centr alized Configur ation NXC-8160 User’s Guide 44 The following table describes the labels in this screen. When you select Master Controller and click Save , the screen changes and displays as shown next. Figure 14 Centralized Configura t ion (Master) The following table describes the labels in this screen.
Chapter 4 Centralized Configu ration NXC-8160 User’s Guide 45 Generate New SSH Keys Click the Save button next to Generate New SSH Keys to have the NXC-8160 create a SSH key which is to be used to identify the NXC-8160 for SSH connections.
Chapter 4 Centr alized Configur ation NXC-8160 User’s Guide 46.
NXC-8160 User’s Guide 47 C HAPTER 5 Wireless LAN This chapter discusses how to configure wireless LAN on the NXC-8160. 5.1 Wireless LAN Introduction A wireless LAN can be as simple as two computers .
Chapter 5 Wireless LAN NXC-8160 User’s Guide 48 In this wireless network, devices A and B are called wireless c lients. The wireless c lients use the access point (AP) which is co nnected to a WLAN controller to interact with other devices (such as the printer) or with the Intern et.
Chapter 5 Wireless LAN NXC-8160 User’s Guide 49 Unauthorized devices can still see th e information that is sent in the wireless network, even if they cannot use the wireless network. Furtherm ore, there are ways for unauthorized wireless users to get a valid user name and password.
Chapter 5 Wireless LAN NXC-8160 User’s Guide 50 Many types of encryption use a key to protect the information in the wireless network. The longer the key , the s tronger the encryption. Ev ery wireless client in the w ireless network must have the same key .
Chapter 5 Wireless LAN NXC-8160 User’s Guide 51 Figure 16 WLAN.
Chapter 5 Wireless LAN NXC-8160 User’s Guide 52 The following table describes the labels in this screen. Ta b l e 1 1 WLAN LABEL DESCRIPTION Regulatory Domain Country/ Regulatory Domain Select the countr y where the NXC-8160 is located. WLAN Configuration The NXC-8160 supports two radios at the same time.
Chapter 5 Wireless LAN NXC-8160 User’s Guide 53 5.4.1 Rename SSIDs Click the Rename SSIDs link in the WLAN Configuration screen to change an existing SSID.
Chapter 5 Wireless LAN NXC-8160 User’s Guide 54 Figure 17 WLAN > SSID T able The following table describes the labels in this screen. 5.5 Configuring Wireless Security Click SSID & Security in the navigation panel or the SSID & Security link in the WLAN Configuration screen to open the SSID & Security scree n.
Chapter 5 Wireless LAN NXC-8160 User’s Guide 55 Figure 18 SSID & Security The following table describes the labels in this screen. T able 14 SSID & Security LABEL DESCRIPTION SSID Choose SSID Select an SSID fo r which you want to co nfigure the wireless and wireless security settings.
Chapter 5 Wireless LAN NXC-8160 User’s Guide 56 5.5.1 No Security " If you do not enable any wireless se curity on your NXC-8160, your network is accessible to any wireless net working device within range.
Chapter 5 Wireless LAN NXC-8160 User’s Guide 57 Figure 19 SSID & Security: None The following table describes the wireless LAN security labels in this screen. 5.5.2 St atic WEP Stat ic WEP provides a mechanism for encrypting data usin g encryption keys.
Chapter 5 Wireless LAN NXC-8160 User’s Guide 58 Figure 20 SSID & Security: WEP The following table describes the labels in this screen. T able 16 SSID & Security: WEP LABEL DESCRIPTI ON Security Mode Select WEP64 or WEP128 from the drop-down list.
Chapter 5 Wireless LAN NXC-8160 User’s Guide 59 5.5.3 St atic WEP + IEEE 802.1x (LEAP) Select WEP64 & 802.1 x (LEAP) or WEP128 & 802. 1x (LEAP) in the Security Mode field to display the following screen. Figure 21 SSID & Security: S tatic WEP + IEEE 802.
Chapter 5 Wireless LAN NXC-8160 User’s Guide 60 5.5.4 WP A-PSK Select WP A-PSK from the Security Mode list. T ransmission Keys The WEP keys are used to secure your data from eavesdropping by unauthorized wireless users. Both the NXC-8160 and t he wireless clients must use the same WEP key for dat a transmission.
Chapter 5 Wireless LAN NXC-8160 User’s Guide 61 Figure 22 SSID & Security: WP A-PSK The following table describes the labels in this screen. 5.5.5 WP A Select WP A from the Security Mode list. T able 18 SSID & Security: WPA-PSK LABEL DESCRIPTION Security Mode Select WP A-PSK from the drop-down list.
Chapter 5 Wireless LAN NXC-8160 User’s Guide 62 Figure 23 SSID & Security: WP A The following table describes the labels in this screen. T able 19 SSID & Security: WPA LABEL DESCRIPTION Security Mode Select WP A from the drop-down list.
NXC-8160 User’s Guide 63 C HAPTER 6 Advanced Screen This chapter describes how to configure switch redundancy an d SNMP settings. 6.1 SNMP Simple Network Management Protocol is a protocol used for exchanging management information between network devices.
Chapter 6 Advan ced Screen NXC-8160 User’s Guide 64 The managed devices cont ain object variables/ managed objects that define each piece of information to be collected ab out a device. Examples of variab les include such as number of packets received, node port status etc.
Chapter 6 Advanced Screen NXC-8160 User’s Guide 65 Figure 25 Advanced The following table describes the labels in this screen. T able 21 Advanced LABEL DESCRIPTION Redundancy Redundancy S tatus Select Enabled to turn on redundancy between a pair of NXC-8160s.
Chapter 6 Advan ced Screen NXC-8160 User’s Guide 66 Save Click Save to save your customized settings in this section. Reset Click Reset to begin configuring this section of the scre en afresh. SNMP Enable Traps Select the check box to enable sendi ng of SNMP traps to a st ation.
NXC-8160 User’s Guide 67 C HAPTER 7 Access Points Screen Click Access Points to display the screen a s shown. This screen allows you to view the status of the access points (APs) connected to the NXC- 8160. Y ou can also use th is screen to set the NXC-8160 not to supply power to an AP .
Chapter 7 Access Points Screen NXC-8160 User’s Guide 68.
NXC-8160 User’s Guide 69 C HAPTER 8 Maintenance Screen This chapter displays informat ion on the maintenance screens. 8.1 Maintenance Overview The maintenanc e screens can help you vie w the configuration, upload new firm ware, manage configuration, configure the NXC-8160’ s time and restart your NXC-81 60.
Chapter 8 Maintenan ce Screen NXC-8160 User’s Guide 70 The following table describes the labels in this screen. 8.2 Configuring Syslog & Monitor Use this screen to configure to where the NXC-8160 is to send logs and how often a log will be sent.
Chapter 8 Maintena nce Screen NXC-8160 User’s Guide 71 Figure 28 Syslog & Monitor The following table describes the labels in this screen. T able 24 Syslog & Monitor LABEL DESCRIPTION Enable Syslog Select the check box to activate syslog loggi ng.
Chapter 8 Maintenan ce Screen NXC-8160 User’s Guide 72.
NXC-8160 User’s Guide 73 C HAPTER 9 Password This chapter displays information on the password screen. 9.1 Configuring Password Click Password to open the following screen. Use this screen to change the NXC-8160’ s management password. Figure 29 Password The following table describes the labels in this screen.
Chapter 9 Passwo rd NXC-8160 User’s Guide 74 New Password T ype your new system password (at least 5 alphanumeric characters). Note that as you type a password, the screen displays a (*) for each character you type. Retype to Confirm T ype the new password again for confirmation.
75 P ART III T roubleshooting and S pecifications T roubleshooting (77) Product Specification s (81).
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NXC-8160 User’s Guide 77 C HAPTER 10 Troubleshooting This chapter offers some sugg estions to solve problems you might encounter . The potential problems are divided into the following categories. • Power , Hardware Connections, and LEDs • NXC-8160 Access and Login • Internet Access 10.
Chapter 10 Trou bleshooting NXC-8160 User’s Guide 78 10.2 NXC-8160 Access and Login V I forgot the LAN IP address for the NXC-8160. 1 The default LAN IP address is 192.168.1.10 . 2 If this does not work or y ou changed the IP address and have for gotten it, you have to contact your ve ndor .
Chapter 10 Trou bleshooting NXC-8160 User’s Guide 79 • If you disconnec t your computer from on e device and connect it to anothe r device that has the same IP address, your computer ’ s ARP (Address Resolution Protoc ol) table may contain an entry that maps the management IP address to the previous device’ s MAC address.
Chapter 10 Trou bleshooting NXC-8160 User’s Guide 80 1 Check the hardware connections , and make su re the LEDs are be having as expected. See the Quick S tart Guide and Section 1.5 on page 25 . 2 Make sure the NXC-8160 is connected to a network that has Interne t access.
NXC-8160 User’s Guide 81 C HAPTER 11 Product Specifications The following tables summarize the NXC-8 160’ s hardware and firmware features. T able 26 Hardware Specifications Dimensions 430 (W) x 240 (D) x 45 (H) mm Weight 3 Kg Power S pecification 10 0 - 240 V AC/2A max.
Chapter 11 Product Specifications NXC-8160 User’s Guide 82 Cable Pin Assignment s In a serial communications connection, gene rally a computer is DTE (Data T erminal Equipment) and a modem is DCE (Data Circuit-terminating Equipment). The NXC-8160 is DCE when you connect a computer to the console port.
Chapter 11 Product Specifications NXC-8160 User’s Guide 83 1 IRD + 1 OTD + 1 IRD + 1 IRD + 2 IRD - 2 OTD - 2 IRD - 2 IRD - 3 OTD + 3 IRD + 3 OTD + 3 OTD + 6 OTD - 6 IRD - 6 OTD - 6 OTD - T able 29 E.
Chapter 11 Product Specifications NXC-8160 User’s Guide 84.
85 P ART IV Appendices and Index " The appendices provide general informatio n. Some details may not apply to your NXC-8160. Setting up Y our Computer ’ s IP Address (87) IP Addresses and Subne.
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NXC-8160 User’s Guide 87 A PPENDIX A Setting up Y our Computer ’ s IP Address All computers must have a 10M or 100M Et hernet adapter card and TCP/IP installed.
Appendix A Setting up Your Computer’s IP Address NXC-8160 User’s Guide 88 Figure 31 WIndows 95/98/Me: Network: Co nfiguration Inst alling Components The Network window Configuration tab displays a list of installed components. Y ou need a network adapter , the TCP/IP protocol and Client for Microso ft Networks.
Appendix A Setting up Your Computer’s IP Address NXC-8160 User’s Guide 89 Configuring 1 In the Network window Configuration tab, select your network adapter's TCP/IP entry and click Properties 2 Click the IP Address tab. • If your IP address is dynamic, select Obtain an IP address automatically .
Appendix A Setting up Your Computer’s IP Address NXC-8160 User’s Guide 90 Figure 33 Windows 95/98/Me: TCP/IP Properties: DNS Configuration 4 Click the Gateway tab. • If you do not know you r gateway’ s IP addr ess, remove previously installed gateways.
Appendix A Setting up Your Computer’s IP Address NXC-8160 User’s Guide 91 Figure 34 Windows XP : S tart Menu 2 In the Control Panel , double-click Network Connections ( Network and Dial-up Connections in W indow s 2000/NT). Figure 35 Windows XP: Control Panel 3 Right-click Local Area Connection and then click Pr operties .
Appendix A Setting up Your Computer’s IP Address NXC-8160 User’s Guide 92 Figure 36 Windows XP: Control Panel: Network Connections: Properties 4 Select Internet Protocol (TCP/IP) (under the Genera l tab in W in XP) and then click Properties .
Appendix A Setting up Your Computer’s IP Address NXC-8160 User’s Guide 93 Figure 38 Windows XP: Internet Protocol (TCP/IP) Prope rties 6 If you do not know your gateway's IP ad dress, remove any previously installed gateways in the IP Settings tab and click OK .
Appendix A Setting up Your Computer’s IP Address NXC-8160 User’s Guide 94 Figure 39 Windows XP : Advanced TC P/IP Propert ies 7 In the Internet Protocol TCP/IP Pr operties window (the General tab in W indow s XP): • Click Obtain DNS server address automatically if yo u do not know your DNS server IP address(es).
Appendix A Setting up Your Computer’s IP Address NXC-8160 User’s Guide 95 Figure 40 Windows XP: Internet Protocol (TCP/IP) Prope rties 8 Click OK to close the Internet Protocol (TCP/IP) Properties window . 9 Click Close ( OK in W i ndows 2000/NT) to close the Local Area Connection Properties window .
Appendix A Setting up Your Computer’s IP Address NXC-8160 User’s Guide 96 Figure 41 Windows Vista: S tart Menu 2 In the Control Panel , double-click Network and Internet . Figure 42 Windows Vista: Control Pa nel 3 Click Network and Sharing Center .
Appendix A Setting up Your Computer’s IP Address NXC-8160 User’s Guide 97 5 Right-click Local Area Connection and then click Pr operties . " During this procedure, click Continue whenever Windows displays a screen saying that it needs y our permission to continue.
Appendix A Setting up Your Computer’s IP Address NXC-8160 User’s Guide 98 7 The Internet Protocol V ersion 4 (TCP/IPv4) Properties window opens (the General tab ).
Appendix A Setting up Your Computer’s IP Address NXC-8160 User’s Guide 99 Figure 48 Windows Vista: Advanced T CP/IP Propertie s 9 In the Internet Protocol V ersion 4 (TCP/IPv4) Properties window , (the Gene ral tab ): • Click Obtain DNS server address automatically if yo u do not know your DNS server IP address(es).
Appendix A Setting up Your Computer’s IP Address NXC-8160 User’s Guide 100 Figure 49 Windows Vista: Internet Pr otocol V ersion 4 (TCP/IPv4 ) Properties 10 Click OK to close the Internet Protocol V ersion 4 (TCP/IPv4) Properti es window . 11 Click Close to close the Local Ar ea C onnection Properties window .
Appendix A Setting up Your Computer’s IP Address NXC-8160 User’s Guide 101 Figure 50 Macintosh OS 8/9: Apple Menu 2 Select Ethernet built-in from the Connect via list. Figure 51 Macintosh OS 8/9: TCP/IP 3 For dynamically assigned settings, select Using DHCP Server from the Configure: list.
Appendix A Setting up Your Computer’s IP Address NXC-8160 User’s Guide 102 • T ype your IP address in the IP Address box. • T ype your subnet mask in the Subnet mask box. • T ype the IP address of your NXC-8160 in the Router address box. 5 Close the TCP/IP Contr ol Panel .
Appendix A Setting up Your Computer’s IP Address NXC-8160 User’s Guide 103 Figure 53 Macintosh OS X: Network 4 For statically assigned settings, do the following: •F r o m t h e Configure box, select Manually . • T ype your IP address in the IP Address box.
Appendix A Setting up Your Computer’s IP Address NXC-8160 User’s Guide 104 " Make sure you are logged in as the root administrator . Using the K Desktop Environment (KDE) Follow the steps below to configure your computer IP address using the KDE.
Appendix A Setting up Your Computer’s IP Address NXC-8160 User’s Guide 105 • If you have a dyna mic IP address, clic k Automatically obtain IP address settings with and select dhcp from the drop down list.
Appendix A Setting up Your Computer’s IP Address NXC-8160 User’s Guide 106 Figure 58 Red Hat 9.0: Dynamic IP Address Setting in ifconfig-eth0 • If you have a static IP address, enter static in t he BOOTPROTO= field. T ype IPADDR = followed by the IP address (in do tted decimal notation) and type NETMASK = followed by the subnet mask.
Appendix A Setting up Your Computer’s IP Address NXC-8160 User’s Guide 107 V erifying Settings Enter ifconfig in a terminal screen to ch eck your TCP/IP properties. Figure 62 Red Hat 9.0: Che c king TCP/IP Properties [root@localhost]# ifconfig eth0 Link encap:Ethernet HWadd r 00:50:BA:72:5B:44 inet addr:172.
Appendix A Setting up Your Computer’s IP Address NXC-8160 User’s Guide 108.
NXC-8160 User’s Guide 109 A PPENDIX B IP Addresses and Subnetting This appendix introduces IP addresses and subnet masks. IP addresses identify ind ividual devices on a network. Every networking device (includin g computers, servers, routers, printe rs, etc.
Appendix B IP Addre sses and Subnetting NXC-8160 User’s Guide 11 0 Figure 63 Network Num ber and H ost ID How much of the IP address is the network number and how much is the host ID varies according to the s ubnet mask.
Appendix B IP Addresses and Subnetting NXC-8160 User’s Guide 111 Subnet masks are expressed in dotted decimal no tation just like IP addresses. The follow ing examples show the binary and decimal not ation for 8-bit, 16-bit, 24-bit an d 29-bit subnet masks.
Appendix B IP Addre sses and Subnetting NXC-8160 User’s Guide 11 2 Subnetting Y ou can use subnetting to divide one network into multiple sub-networks. In the following example a network administrator creates two sub-networks to isolate a group of servers from the rest of the c ompany network for security reasons.
Appendix B IP Addresses and Subnetting NXC-8160 User’s Guide 11 3 Figure 65 Subnetting Example: After Subnetting In a 25-bit subnet the host ID has 7 bits , so each sub-network has a maximum of 2 7 – 2 or 126 possible hosts (a host ID of all zeroes is the subnet’ s address itself, all ones is the subnet’ s broadcast address).
Appendix B IP Addre sses and Subnetting NXC-8160 User’s Guide 11 4 Example: Eight Subnet s Similarly , use a 27-bit mask to create eight subnets (000, 00 1, 010, 01 1, 100, 101, 1 10 and 111 ) . The following table shows IP address last octet values for each subnet.
Appendix B IP Addresses and Subnetting NXC-8160 User’s Guide 11 5 Subnet Planning The following table is a summary for su bnet planning on a network with a 24-bit network number . The following table is a summary for su bnet planning on a network with a 16-bit network number .
Appendix B IP Addre sses and Subnetting NXC-8160 User’s Guide 11 6 Configuring IP Addresses Where you obtain your netwo rk number depends on your particular situation. If the ISP or your network administrator assigns yo u a bloc k of registered IP addresses, follow their instructions in selecting the IP addresses and the subnet mask.
Appendix B IP Addresses and Subnetting NXC-8160 User’s Guide 11 7 IP Address Conflict s Each device on a network must have a unique IP address. Devices with duplicate IP addres ses on the same network will not be ab le to access the Internet or ot her resources.
Appendix B IP Addre sses and Subnetting NXC-8160 User’s Guide 11 8 Conflicting Computer and R outer IP Addresses Example More than one device can not use the same IP addr ess. In the following example, the computer and the router ’ s LAN port both use 192.
NXC-8160 User’s Guide 11 9 A PPENDIX C Pop-up Windows, JavaScript s and Java Permissions In order to use the web configurator you need to allow: • W eb browser pop-u p windows from your device. • JavaScripts (enabled by default). • Java permissions (enabled by default).
Appendix C Pop-up Windows, JavaScripts and Java Perm issions NXC-8160 User’s Guide 120 2 Clear the Block pop-ups check box in the Pop-up Block e r section of the screen. This disables any web po p-up blockers you may have ena bled. Figure 70 Internet Options: Privacy 3 Click Apply to save this setting.
Appendix C Pop-up Windows, JavaScripts and Java Per m issions NXC-8160 User’s Guide 121 Figure 71 Internet Options: Privacy 3 T ype the IP address of your device (the web page that you do not want to have blocked) with the prefix “http://”. For example, http://192.
Appendix C Pop-up Windows, JavaScripts and Java Perm issions NXC-8160 User’s Guide 122 5 Click Close to return to the Privacy screen. 6 Click Apply to save this setting. JavaScript s If pages of the web configura tor do not display properly in Internet Explorer, check that JavaScripts are allowed.
Appendix C Pop-up Windows, JavaScripts and Java Per m issions NXC-8160 User’s Guide 123 Figure 74 Security Setting s - Java S cripting Java Permissions 1 From Internet Explorer , click To o l s , Internet Options and then the Security tab. 2 Click the Custom Level.
Appendix C Pop-up Windows, JavaScripts and Java Perm issions NXC-8160 User’s Guide 124 JA V A (Sun) 1 From Internet Explorer , click To o l s , Internet Options and then the Advanced tab. 2 Make sure that Use Java 2 for <applet> under Java (Sun) is sele cted.
Appendix C Pop-up Windows, JavaScripts and Java Per m issions NXC-8160 User’s Guide 125 Figure 77 Mozilla Firefox: T ools > Options Click Content .
Appendix C Pop-up Windows, JavaScripts and Java Perm issions NXC-8160 User’s Guide 126.
NXC-8160 User’s Guide 127 A PPENDIX D W ireless LANs Wireless LAN T opologies This section discusses ad-hoc and in frastructure w ireless LAN topologies. Ad-hoc Wireless LAN Configuration The simplest WLAN configuration is an inde pendent (Ad-hoc) WLAN that connects a se t of computers with wireless adapters (A, B, C).
Appendix D Wireless LANs NXC-8160 User’s Guide 128 Figure 80 Basic Service Set ESS An Extended Service Set (ESS) consists of a series of overlappi ng BSSs, each containing an access point, with each access point connected together by a wired network.
Appendix D Wireless LANs NXC-8160 User’s Guide 129 Figure 81 Infrastructure WLAN Channel A channel is the radio frequency(ies) used by wireless devices to transmit and receive data.
Appendix D Wireless LANs NXC-8160 User’s Guide 130 Figure 82 RTS / CT S When station A sends data to the AP , it might not know that the station B is already using the channel.
Appendix D Wireless LANs NXC-8160 User’s Guide 131 If the Fragmentation Threshold value is smaller than the RT S / C T S value (see previously) you set then the R TS (Request T o Send)/CTS (Clear to Send) handshake will never occur as data frames will be fragmen ted before they reach R TS/CTS size.
Appendix D Wireless LANs NXC-8160 User’s Guide 132 W ireless security methods availa ble on the NX C-8160 are data encryption, wireless client authentication, restricting a ccess by device MAC address and hiding the NXC-8160 identity .
Appendix D Wireless LANs NXC-8160 User’s Guide 133 Determines the network services available to authenticated users once they are connected to the network.
Appendix D Wireless LANs NXC-8160 User’s Guide 134 For EAP-TLS authentication type, you must firs t hav e a wired connection to the network and obtain the certificate(s) from a certificate authorit y (CA).
Appendix D Wireless LANs NXC-8160 User’s Guide 135 Dynamic WEP Key Exchange The AP maps a unique ke y that is generated w ith the RADIUS server . This key expires when the wireless connection times out, disconnects or reauthentic ation times out. A new WEP key is generated each time r eauthentication is performed.
Appendix D Wireless LANs NXC-8160 User’s Guide 136 Encryption Both WP A and WP A2 improve data encryp tion by using T emporal Key Integrity Protocol (TKIP), Message Integrity Check (MIC) and IE EE 802.
Appendix D Wireless LANs NXC-8160 User’s Guide 137 Wireless Client WP A Supplicant s A wireless client supplicant is the software that runs on an operating system instructing the wireless client how to use WP A. At the time of writing, the most widely available supplicant is the WP A patch for W indows XP , Funk Software's Odyssey client.
Appendix D Wireless LANs NXC-8160 User’s Guide 138 3 The AP and wireless clients generate a common PMK (Pairwise Master Key). The key itself is not sent over the network, but is derived from the PSK and the SSID.
Appendix D Wireless LANs NXC-8160 User’s Guide 139 Antenna Overview An antenna couples RF signals onto air . A tran smitter within a wireless device sends an RF signal to the antenna, which propagates the signal through the air . The antenna also operates in reverse by capturing RF signals fro m the air .
Appendix D Wireless LANs NXC-8160 User’s Guide 140 Positioning Antennas In general, antennas should be mounted as high as practically possible and free of obstructions. In point-to–point ap plication, position both antennas at the same height and in a direct line of si ght to each othe r to attain the best performance.
NXC-8160 User’s Guide 141 A PPENDIX E Legal Information Copyright Copyright © 2007 by ZyXEL Communications Corporation. The contents of this publication may not be reprod uced in any part or as a w.
Appendix E Legal In formation NXC-8160 User’s Guide 142 If this device does cause harmful inte rference to radio/television reception, which can be determined by turning th e device off and on, the user is enc ouraged to try to correct the interference by one or more of the following measures: 1 Reorient or relocate the receiving antenna.
Appendix E Legal Information NXC-8160 User’s Guide 143 Vie wing Certifications 1 Go to http://www .zyxel.com . 2 Select your product on the ZyXEL home pag e to go to that product's page. 3 Select the certification you wish to view from this page.
Appendix E Legal In formation NXC-8160 User’s Guide 144.
Appendix F Customer Support NXC-8160 User’s Guide 145 A PPENDIX F W EB : Customer Support Please have the following information r eady when you contact customer support. Required Information • Product model and serial number . • W arranty Information.
Appendix F Custom er Support NXC-8160 User’s Guide 146 • Fax: +420-241-091 -359 • W eb: www .zyxel.cz • Re g u l a r Ma i l : ZyXEL C ommunications, Czech s.r .o., Modranská 621, 143 01 Praha 4 - Modrany , Ceská Republika Denmark • Support E-mail: support@zyxel.
Appendix F Customer Support NXC-8160 User’s Guide 147 India • Support E-mail: support@zyxel.in • Sales E-mail: sales@zyxel.in • T elephone: +91-1 1-30888144 to +91 -11-308 88153 • Fax: +91-1 1-30888149, +91 -11-2 6810715 • W eb: http://www .
Appendix F Custom er Support NXC-8160 User’s Guide 148 • Re g u l a r M a i l: ZyXEL Communications Inc., 1 130 N. Miller St., Anaheim, CA 92806- 2001, U.S.A. Norway • Support E-mail: support@zyxel.no • Sales E-mail: sales@zyxel.no • T elephone: +47-22-80-61-80 • Fax: +47-22-80-61-81 • W eb: www .
Appendix F Customer Support NXC-8160 User’s Guide 149 Sweden • Support E-mail: support@zyxel.se • Sales E-mail: sales@zyxel.se • T elephone: +46-31-744-7700 • Fax: +46-31-744-7701 • W eb: www .zyxel.se • Re g u l ar M a il : ZyXEL Communications A/S, Sjö porten 4, 41764 Götebor g, Sweden Thailand • Support E-mail: support@zyxel.
Appendix F Custom er Support NXC-8160 User’s Guide 150.
Index NXC-8160 User’s Guide 151 Index A About 30 Access point See also AP . access point 48 Advanced Encryption St andard See AES. AES 136 alternative subnet mask notation 111 antenna directional 139 gain 139 omni-directional 139 AP 48 See also access point.
Index NXC-8160 User’s Guide 152 See IANA 11 6 IP address private 36 L LAN 38 local (user) database 48 and encryption 49 M maintenance 69 Management Information Base. See MIB. managing the device good habits 25 using T elnet. See command interface. using the command interface.
Index NXC-8160 User’s Guide 153 U user authentication 48 local (user) database 48 RADIUS server 48 weaknesse s 49 Username Default 27 V Virtual Local Area Network see VLAN VLAN 37 VLAN tagging 37 W .
Index NXC-8160 User’s Guide 154.
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