Manuale d’uso / di manutenzione del prodotto G-570U del fabbricante ZyXEL
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ZyXEL G-570U IEEE 802.1 1a/b/g Wireless Access Point / Bridge User ’ s Guide V ersion 1.0 0 Edition 1 07/2006.
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ZyXEL G-570U User’s Guide Copyright 3 Copyright Copyright © 2006 by ZyXEL Communications Corpo ration. The contents of this publication may not be reprod uced in any part or as a whole, transcribed.
ZyXEL G-570U User’s Guide 4 Certifications Certifications Federal Communications Commissi on (FCC) Interference St atement The device complies with Part 15 of FCC rules. Operation is subject to the following two conditions: • This device may not cause harmful interference.
ZyXEL G-570U User’s Guide Certifications 5 第十二條 經型式 認證合格之低功率射頻電機，非經 許可，公司、商號或使用 者均不得擅自變更頻率、加大功率或變.
ZyXEL G-570U User’s Guide 6 Safety Warnings Safety W arnings For your safety , be sure to read and fo llow all warning notices and instructions. • Do NOT use this product near water , for exam ple, in a wet basement or nea r a swimming pool. • Do NOT expose your device to dampness, dust or corrosive liquids.
ZyXEL G-570U User’s Guide Safety Warnings 7 This product is recyclable . Dispose of it properly ..
ZyXEL G-570U User’s Guide 8 ZyXEL Limited Warranty ZyXEL Limited W arranty ZyXEL warrants to the original en d user (purchaser) that this product is free from any defects in materials or workmansh ip for a period of up to tw o years from the date of purchase .
ZyXEL G-570U User’s Guide Customer Support 9 Customer Support Please have the following information r eady when you contact customer support. • Product model and serial number . • W arranty Information. • Date that you received your de vice. • Brief description of the problem and the steps yo u took to solve it.
ZyXEL G-570U User’s Guide 10 Customer Suppo rt “+” is the (prefix) number you enter to make an international telephone call. NORWAY support@zyxel.no +47-22-80-61-80 www .zyxel.no ZyXEL Communications A/S Nils Hansens vei 13 0667 Oslo Norway sales@zyxel.
ZyXEL G-570U User’s Guide Table of Contents 11 T able of Content s Copyright .................................................. ................................................................ 3 Certifications .......................................
ZyXEL G-570U User’s Guide 12 Table of Contents Chapter 3 Introducing the W eb Configurator ........................................................................ 37 3.1 Web Configurator Overview ...... ............. ............. ................ .
ZyXEL G-570U User’s Guide Table of Contents 13 6.3.4 AP+Repeater Mode .............. ............. ............. ................ ............. ............ 68 6.4 Wireless Security Overview ...................... ................ ............. ....
ZyXEL G-570U User’s Guide 14 Table of Contents 7.4.3 Back to Factory Defaults .. ............. ................ ............. ................ ............. ..97 7.5 F/W Upload S creen .. ................ ............. ................ .............
ZyXEL G-570U User’s Guide List of Figure s 15 List of Figures Figure 1 WDS Functionality Example ............. ....... ................ ............. ............. ................ ... 24 Figure 2 Internet Access Applic ation ..... .................
ZyXEL G-570U User’s Guide 16 List of Figures Figure 39 Bridge Loop: T wo Bridges Connected to Hub ................. ................. ............ ....... 66 Figure 40 Bridge Loop: Bridge Connected to Wired LAN ......................... ............
ZyXEL G-570U User’s Guide List of Figure s 17 Figure 82 Windows 95/98/Me: TCP/IP Properties : IP Address ........... ............. ................ ... 1 17 Figure 83 Windows 95/98/Me: TCP/IP Properti es: DNS Configuration ..........................
ZyXEL G-570U User’s Guide 18 List of Figures.
ZyXEL G-570U User’s Guide List of Tables 19 List of T ables T able 1 Front Panel LED Descript ion ....................... ............. ................ ................ ............. 29 T able 2 G-570U: Rear Panel ............. ............. ......
ZyXEL G-570U User’s Guide 20 List of Tables T able 39 Classes of IP Addresses ....... ............. ................. ................ ................ ............. ... 146 T able 40 Allowed IP Address Range By Class .. ............. ..............
ZyXEL G-570U User’s Guide Preface 21 Preface Congratulations on your purchase of the Zy XEL G-570U IEEE 802.1 1a/b/g W ireless Access Point / Bridge. Note: Register your product online to receive e-mail notice s of firmware upgrades and information at www .
ZyXEL G-570U User’s Guide 22 Preface Graphics Icons Key G-570U Computer Notebook computer Server Modem Wireless Signal T elephon e Switch Router.
ZyXEL G-570U User’s Guide Chapter 1 Getting to Know Your G-570U 23 C HAPTER 1 Getting to Know Y our G-570U This chapter introduces the main feat ures an d applications of the G-570U. 1.1 Introducing the G-570U Wireless Access Point The ZyXEL G-570U is a 4-in-1 wireless Access Point.
ZyXEL G-570U User’s Guide 24 Chapter 1 Getting to Know Your G-570U Figure 1 WDS Functionality Example OTIST (One-T ouch Intellig ent Security T echnology) OTIST allows your G-570U to assign its SSI D and security settings (WEP or WP A-PSK) to the ZyXEL wireless adapters that support OT IST and are within transmission range.
ZyXEL G-570U User’s Guide Chapter 1 Getting to Know Your G-570U 25 IEEE 802.1 1g is fully compatible with th e IEEE 802.1 1b standard. This means an IEEE 802.1 1b radio card can interface directly with an IEEE 802.1 1g access point (and vice versa) at 1 1 Mbps or lower de pending on range.
ZyXEL G-570U User’s Guide 26 Chapter 1 Getting to Know Your G-570U Wireless Association List W ith the wireless assoc iation list, you can see the list of the wireless stations that are currently using the G-570U to access your wired network.
ZyXEL G-570U User’s Guide Chapter 1 Getting to Know Your G-570U 27 Figure 3 Corporate Ne twor k Application 1.3.3 Wireless Client Application The G-570U can func tion as a wireless client to connect to a network via an Access Point (AP). The AP provides access to th e wired network and the Intern et.
ZyXEL G-570U User’s Guide 28 Chapter 1 Getting to Know Your G-570U Figure 5 Bridge Application A G-570U in bridge mode witho ut an Ethernet connection can fu nction as a repeater . It transmits traffic from one AP to another AP without using a wired connection.
ZyXEL G-570U User’s Guide Chapter 1 Getting to Know Your G-570U 29 Figure 7 AP+Repeater Application 1.4 The LED Display Figure 8 Front Panel The following table describes the LEDs on the G-570U. Table 1 Front Panel LED Descri ption LED COLOR ST A T US DESCRIPTION PWR/ SYS Green Blinking The G-570U is not ready or reboo ting.
ZyXEL G-570U User’s Guide 30 Chapter 1 Getting to Know Your G-570U 1.5 The Rear Panel Figure 9 G-570U: Rear Panel The following table describes the rear panel of the G-570U. G Green On The G-570U has an active IEEE 802.1 1b/g wireless connection, but is not transmitting or receiving data.
ZyXEL G-570U User’s Guide Chapter 2 Management Comp uter Setup 31 C HAPTER 2 Management Computer Setup This chapter describes how to prepare your comp uter to access the G-570U web configurator .
ZyXEL G-570U User’s Guide 32 Chapter 2 Management Comput er Setup 2.2.1.1 Windows 2000/NT/XP The following exa mple figures use the default W indows XP GUI theme.
ZyXEL G-570U User’s Guide Chapter 2 Management Comp uter Setup 33 Figure 13 Local Area Connection Properties 5 Select Use the following IP Addr ess and fill in an IP address (between 192.16 8.1.3 and 192.168.1. 254). • T ype 255.255.255.0 as the Subnet mask .
ZyXEL G-570U User’s Guide 34 Chapter 2 Management Comput er Setup Figure 15 Advanced TCP/IP Settings 7 Click OK to close the Internet Protocol (TCP/IP) Properties window . 8 Click Close ( OK in W ind ows 2000/NT) to close the Local Area Connection Properties window .
ZyXEL G-570U User’s Guide Chapter 2 Management Comp uter Setup 35 Note: The wireless stations and G-570U must use the same SSID, channel and wireless security s ettings for wireless com m unication. If you do not enable any wireless security on your G-570U, your network traffic is visible to any wireless network ing device that is within range .
ZyXEL G-570U User’s Guide 36 Chapter 2 Management Comput er Setup.
ZyXEL G-570U User’s Guide Chapter 3 Introducing the Web Configur ator 37 C HAPTER 3 Introducing the W eb Configurator This chapter describes how to conf igure the G-570U using the W izard.
ZyXEL G-570U User’s Guide 38 Chapter 3 Introducing the Web Configurator Figure 17 Web Configurator Ad dress 5 T ype "1234" (default) as the password and click Login . Figure 18 Login Screen 6 Select your language and click Apply . Figure 19 Language Scre en 7 The following screen displays.
ZyXEL G-570U User’s Guide Chapter 3 Introducing the Web Configur ator 39 Figure 20 Select Wizard or Adva nced Setup Scr een 3.3 Configuring the G-570U Using the Wizard The wizard cons ists of a series of screens to help you configure your G-570U for wireless stations to access your wired LAN.
ZyXEL G-570U User’s Guide 40 Chapter 3 Introducing the Web Configurator Figure 21 Wizard: Basic Settings 3.3.2 Wizard: Wireless Settings Use this wizard screen to set up the wireless L AN. See the chapter on the wireless screens for background informatio n.
ZyXEL G-570U User’s Guide Chapter 3 Introducing the Web Configur ator 41 Figure 22 Wizard: Wireless Settings 3.3.3 Wizard: Security Settings Use this screen to configure security for your wireless LAN. The screen varies depending on what you select in the Encryption Method field.
ZyXEL G-570U User’s Guide 42 Chapter 3 Introducing the Web Configurator Figure 23 Setup Wizard 3: Disable 3.3.3.2 WEP 1 WEP (W ired Equivalent Privacy) encrypts data frames before tr ansmitting over the wireless network. Select 64-bit , or 128-bit from the WEP Encryption drop-down list box.
ZyXEL G-570U User’s Guide Chapter 3 Introducing the Web Configur ator 43 Figure 24 Wizard 3: WEP 3.3.3.3 WP A(2)-PSK Select WP A-PSK or WP A2-PSK only if your wireless clients support it. T ype a pre-shared key from 8 to 63 ASCII characters (including spaces and symbols).
ZyXEL G-570U User’s Guide 44 Chapter 3 Introducing the Web Configurator Figure 25 Wizard 3: WP A(2)-PSK 3.3.4 Wizard: Confirm Y our Settings This read-only screen shows the status of the current settings. Use the summary table to check whether what you have confi gured is correct.
ZyXEL G-570U User’s Guide Chapter 3 Introducing the Web Configur ator 45 Figure 26 Wizard: Confirm Y our Settings For more detailed background information, see the rest of this User's Guide. 3.4 Navigating the Advanced Screens The ST A TUS screen is the first advanced sc reen that displays.
ZyXEL G-570U User’s Guide 46 Chapter 3 Introducing the Web Configurator Figure 27 S tatus Screen The following table describes the global web conf igurator icons (in the upper right corner of most screens). 3.4.1 Navigation Panel After you enter the password, use the links on the navigation panel to go to the various advanced screens.
ZyXEL G-570U User’s Guide Chapter 3 Introducing the Web Configur ator 47 The following table describes the sub-menus. Note: See the rest of this User's Guide for conf iguration details and background information on all G-570U features using the web configurator .
ZyXEL G-570U User’s Guide 48 Chapter 3 Introducing the Web Configurator.
ZyXEL G-570U User’s Guide Chapter 4 Status Screens 49 C HAPTER 4 S t atus Screens This chapter describes the Status screens. 4.1 System S t atus Click St a t u s to open the following screen. The S tatus screen display a snapshot of your device’ s settings.
ZyXEL G-570U User’s Guide 50 Chapter 4 Status Screen s 4.1.1 St atistics Click V iew S tatistics in the St a t u s sc reen. This screen displa ys read-only information including port status and packet-specific statis tics. Also provided are "s ystem up time" and "poll interval(s)".
ZyXEL G-570U User’s Guide Chapter 4 Status Screens 51 Figure 29 S tatus: V iew S tatistics The following table describes the labels in this screen. Table 7 S tatus: V iew S tatistics LABEL DESCRIPTION Ethernet Packets This row displays the numbers of packe ts received and transmitted by the Ethernet port.
ZyXEL G-570U User’s Guide 52 Chapter 4 Status Screen s 4.1.2 Association List Click St a t u s and then the V iew Associ ation List button to display the Association List screen. When the device is not in wireless c lient mode, this scree n displays which wireless stations are currently associated to the device in the Association List screen.
ZyXEL G-570U User’s Guide Chapter 5 Syst em Screen 53 C HAPTER 5 System Screen This chapter provides information on the System screen. 5.1 TCP/IP Parameters 5.
ZyXEL G-570U User’s Guide 54 Chapter 5 System Screen If the ISP did not expl icitly give you an IP ne twork number , then most likely you have a sin g le user account and the ISP will assign you a d ynamic IP address when the connection is established.
ZyXEL G-570U User’s Guide Chapter 5 Syst em Screen 55 Obtain IP Address Automatically Select this option to have your device use a dynamically assigned IP ad dress from a router each tim e. Use fixed IP address Select this option to have your device use a static IP address.
ZyXEL G-570U User’s Guide 56 Chapter 5 System Screen.
ZyXEL G-570U User’s Guide Chapter 6 Wireless Screens 57 C HAPTER 6 W ireless Screens This chapter discusses how to configure wirele ss settings and wireless security on your G- 570U. 6.1 Wireless LAN Overview This section introduces the wireless LAN (WLAN) and some basic scenarios.
ZyXEL G-570U User’s Guide 58 Chapter 6 Wireless Scree n s Figure 33 Basic Service set 6.1.3 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.
ZyXEL G-570U User’s Guide Chapter 6 Wireless Screens 59 Figure 34 Extended Service Set 6.2 Wireless LAN Basics This section describes the wireless LAN network terms. 6.2.1 Channel A channel is the radio frequency(ies) used by IEEE 802.1 1b wireless devices.
ZyXEL G-570U User’s Guide 60 Chapter 6 Wireless Scree n s 6.2.3 RTS/CTS A hidden node occurs when two stations are with in range of the same access point, but are not within range of each other .
ZyXEL G-570U User’s Guide Chapter 6 Wireless Screens 61 6.2.4 Fragment ation Threshold A Fragmentation Threshold is the maximum data fragment s ize (between 256 an d 2432 bytes) that can be sent in the wireless network before the G-570U will fragment the packet into smaller data frames.
ZyXEL G-570U User’s Guide 62 Chapter 6 Wireless Scree n s The following table describes the labels in this screen. Table 11 Wireless Settings: Access Point LABEL DESCRIPTION Operation Mode Select the op erating mode from the drop-d own list. The options are AP , Wireless Client , Bridge and AP+Repeater .
ZyXEL G-570U User’s Guide Chapter 6 Wireless Screens 63 6.3.2 Wireless Client Mode Select Wir eless Client in th e Operation Mode field to display the screen shown next. This mode has the device act as wireless clie nt to connec t to a wireless network.
ZyXEL G-570U User’s Guide 64 Chapter 6 Wireless Scree n s Figure 37 Wireless Settings: Wireless Client The following table describes the labels in this screen. Table 12 Wireless Settings: Wireless Client LABEL DESCRIPTION Operation Mode Select the op erating mode from the drop-d own list.
ZyXEL G-570U User’s Guide Chapter 6 Wireless Screens 65 6.3.3 Bridge Mode The device can act as a wireless ne twork bridge and establish wireless links with other APs. Y ou need to know th e MAC address of the peer devi ce, which also must be in bridge mode.
ZyXEL G-570U User’s Guide 66 Chapter 6 Wireless Scree n s Figure 39 Bridge Loop: T wo Bridges Conn ected to Hub If your G-570U (in bridge mod e) is connecte d to a wired LAN while communicating with another wireless bridge that is also conn ected to the same wired LAN as shown next.
ZyXEL G-570U User’s Guide Chapter 6 Wireless Screens 67 Figure 41 Wireless Settings: Bridge The following table describes the labels in this screen. Table 13 Wireless Settings: Bridge LABEL DESCRIPTION Operation Mode Select the op erating mode from the drop-d own list.
ZyXEL G-570U User’s Guide 68 Chapter 6 Wireless Scree n s 6.3.4 AP+Repeater Mode Select AP+Repeater as the Operation Mode to have the device act as an access point and a wireless bridge. Wireless Mo de Select 802.1 1a only to allow only IEEE 802.1 1a complian t WLAN devices to associate with the device.
ZyXEL G-570U User’s Guide Chapter 6 Wireless Screens 69 Figure 42 Wireless Settings: AP+Repeater The following table describes the labels in this screen. Table 14 Wireless Settings: AP + Repeater LABEL DESCRIPTION Operation Mode Select the op erating mode from the drop-d own list.
ZyXEL G-570U User’s Guide 70 Chapter 6 Wireless Scree n s Wireless Mo de Select 802.1 1a only to allow only IEEE 802.1 1a complian t WLAN devices to associate with the device. Select 802.1 1b only to allow only IEEE 802.1 1b compliant WLAN devices to associate with the device.
ZyXEL G-570U User’s Guide Chapter 6 Wireless Screens 71 6.4 Wireless Security Overview W ireless security is vital to your network to p rotect wireless commu nication betw een wireless stations, access points and the wired network. The figure below shows the p ossible wireless security levels on your G-5 70U.
ZyXEL G-570U User’s Guide 72 Chapter 6 Wireless Scree n s See the appendix for informati on on protocol s used when a client authenticates with a RADIUS server via the G-570U.
ZyXEL G-570U User’s Guide Chapter 6 Wireless Screens 73 Figure 43 WEP Authenticat ion S teps Open system authentication in volves an unencrypted two-message procedure. A wireless station sends an open system authentication request to the AP , which will then automatically accept and connect the wire less station to the network.
ZyXEL G-570U User’s Guide 74 Chapter 6 Wireless Scree n s 6.7 Introduction to RADIUS RADIUS is based on a client-sever model that supports authentication and accounting, where access point is the client and the server is the RADIUS server .
ZyXEL G-570U User’s Guide Chapter 6 Wireless Screens 75 6.8 EAP Authentication Overview EAP (Extensible Authentication Protocol) is an au thentication protocol that runs on top of the IEEE802.1x transport mech anism in order to support multiple types of user au thentication.
ZyXEL G-570U User’s Guide 76 Chapter 6 Wireless Scree n s T o use Dynamic WEP , enable and configure the RADIUS server and enable Dynamic WEP Key Exchange in the WIRELESS Security 802.
ZyXEL G-570U User’s Guide Chapter 6 Wireless Screens 77 6.10.2 User Authentication WP A or WP A2 applies IEEE 802.1x and Exte nsible Authentication Protocol (EAP) to authenticate wireless clients using an external RADIUS database. 6.1 1 WP A(2)-PSK Application Example A WP A(2)-PSK applica tion looks as follows.
ZyXEL G-570U User’s Guide 78 Chapter 6 Wireless Scree n s generate unique data en cryption keys to encr ypt every data packet that is wirelessly communicated between the AP and the wireless clients. Figure 46 WP A with R ADIUS Application Example 6.
ZyXEL G-570U User’s Guide Chapter 6 Wireless Screens 79 6.14 Configuring Wireless Security In order to configure and en able wireless security; click Wir eless > Security to display the Security screen. This screen varies according to the encryption method you select.
ZyXEL G-570U User’s Guide 80 Chapter 6 Wireless Scree n s Figure 48 Wireless Securit y: WEP The following table describes the labels in this screen. 6.14.3 Wireless Security: WP A(2)-PSK Select WP A-PSK , WP A2-PSK or WP A-PSK & WP A2-PSK in the Encryption Method drop down list-box to display the screen displays as next.
ZyXEL G-570U User’s Guide Chapter 6 Wireless Screens 81 Figure 49 Wireless Security: WP A(2)-PSK The following table describes the labels in this screen. 6.14.4 Wireless Security: WP A(2) WP A (W i-Fi Protecte d Access) is a subset of the IEEE 802.1 1i standard.
ZyXEL G-570U User’s Guide 82 Chapter 6 Wireless Scree n s Figure 50 Wireless Securit y: WP A(2) The following table describes the labels in this screen. Table 20 Wireless Securit y: WP A(2) LABEL DESCRIPTION Encryption Method Select WP A , WP A2 or WP A & WP A2 to configure user authenti cation and improved data encryption.
ZyXEL G-570U User’s Guide Chapter 6 Wireless Screens 83 6.14.5 Wireless Security: 802.1x The IEEE 802.1x standard outlines enhanced security methods for both the authentication of wireless stations and en cryption key managemen t.
ZyXEL G-570U User’s Guide 84 Chapter 6 Wireless Scree n s The following table describes the labels in this screen. Table 21 Wireless Secu rity: 802. 1x LABEL DESCRIPTION Encryption Method Select 802.1X to configure auth entication of wir eless stations and encryption key management.
ZyXEL G-570U User’s Guide Chapter 6 Wireless Screens 85 6.15 MAC Filter The MAC filter screen allows you to give exclusive access to up to 32 devices (Allow Association) or exclude up to 32 devices fro m accessing the device (Deny Association). Every Ethernet device has a unique MAC (Media Access Control) address.
ZyXEL G-570U User’s Guide 86 Chapter 6 Wireless Scree n s Figure 52 MAC Filter The following table describes the labels in this screen. Table 22 MAC Filter LABEL DESCRIPTION Active Select the check box to enable MAC ad dr ess filtering and define t he filter action for the list of MAC addresses in the MAC address filte r table.
ZyXEL G-570U User’s Guide Chapter 6 Wireless Screens 87 6.16 OTIST In a wireless network, the wireless clients mu st have the same SSID and security settings as the access point (AP) or wireless router (we wi ll refer to both as “AP” here) in order to associate with it.
ZyXEL G-570U User’s Guide 88 Chapter 6 Wireless Scree n s The following table describes the labels in this screen. 6.16.1.2 Wireless Client Start the ZyXEL utility and click the Adapter tab. Select the OTIST check box, enter the same Setup Key as your AP’ s and click Save .
ZyXEL G-570U User’s Guide Chapter 6 Wireless Screens 89 6.16.1.3.1 Wireless Clien t Mode: OTIST Button If you use the OTIST button, the default (0123456 7) or previous sav e d (through the web configurator) Setup key is used. Double-click the OTIST button to automatically change th e G-570U to wireless client mode and start OTIST .
ZyXEL G-570U User’s Guide 90 Chapter 6 Wireless Scree n s 2 This screen appears while OTIST settings ar e being transferred. It closes when the transfer is complete. Figure 58 OTIST in Progress (Client) • In the wireless client, you see this screen if i t can't find an OTIST -enabled AP (with the same Setup key ).
ZyXEL G-570U User’s Guide Chapter 6 Wireless Screens 91 Figure 60 S tart OTIST? 2 If an OTIST -enabled wireless client loses its wireless connection for more than ten seconds, it will search for an OTIST -enabled AP for up to one minute.
ZyXEL G-570U User’s Guide 92 Chapter 6 Wireless Scree n s.
ZyXEL G-570U User’s Guide Chapter 7 Ma nagement Screens 93 C HAPTER 7 Management Screens This chapter describes the Maintenance screens. 7.1 Maintenance Overview Use these maintenance screens to change the pa ssword, view logs, back up or restore the G- 570U configuration and change the web configurat or language.
ZyXEL G-570U User’s Guide 94 Chapter 7 Manag ement Scre ens 7.3 Logs Click Management > Logs to open the Lo gs screen. Y ou can view logs and alert messages in this scr een. Once the log table is full, old logs are deleted as new logs are created.
ZyXEL G-570U User’s Guide Chapter 7 Ma nagement Screens 95 7.4 Configuration File The configuration file (often ca lled the romfile or rom-0) contai ns the factory default settings such as password and TCP/IP Setup, etc. It arrives from ZyXEL with a .
ZyXEL G-570U User’s Guide 96 Chapter 7 Manag ement Scre ens Click Backup to save the device's current co nfiguration to your compute r . 7.4.2 Restore Configuration Restore configuration allows you to upload a new or previously saved configuration file from your computer to your device.
ZyXEL G-570U User’s Guide Chapter 7 Ma nagement Screens 97 Figure 66 Configuration Uploa d Error 7.4.3 Back to Factory Default s Clicking the RESET button in this section clears all us er-entered configuration information and returns the device to its factory defaul ts.
ZyXEL G-570U User’s Guide 98 Chapter 7 Manag ement Scre ens The following table describes the labels in this screen. Note: Do not turn of f the device while firmware upload is in progress! The following screen appears. W ait two minute s before logging into the de vice again.
ZyXEL G-570U User’s Guide Chapter 8 Troubles hooting 99 C HAPTER 8 T roubleshooting This chapter covers potential pr oblems and possible remedies. After each problem descri ption, some instructions are provided to help you to diagno se and to solve the prob lem.
ZyXEL G-570U User’s Guide 100 Chapter 8 Troubleshooting 8.3 Problems with the WLAN Interface 8.4 Problems with the Ethernet Interface Table 30 Troubleshootin g the WLAN Interface PROBLEM CORRECTIVE ACTION I cannot access the G-570U from the WLAN. Make sure the wireless adapter on the wireless station is worki ng properly .
ZyXEL G-570U User’s Guide Chapter 8 Troubles hooting 101 8.4.1 Pop-up Windows, JavaS cript s and Java Permissions In order to use the web configurator you need to allow: • W eb browser pop-up windows from your device. • JavaScripts (enabled by default).
ZyXEL G-570U User’s Guide 102 Chapter 8 Troubleshooting 8.4.1.1.1 Disable pop-up Blockers 1 In Internet Explorer , select To o l s , Pop-up Blocker and then select T urn Off Pop-up Blocker . Figure 72 Pop-up Blocker Y ou can also check if pop-u p blocking is disabled in the Pop-up Blocker section in the Privacy tab.
ZyXEL G-570U User’s Guide Chapter 8 Troubles hooting 103 8.4.1.1.2 Enable pop-up Blockers with Excep tions Alternatively , if you only want to allow pop-up windows from your device, see the follo wing steps. 1 In Internet Explorer , select To o l s , Inte rnet Options and then the Privacy tab.
ZyXEL G-570U User’s Guide 104 Chapter 8 Troubleshooting Figure 75 Pop-up Blocker Settings 5 Click Close to return to the Privacy screen. 6 Click Apply to save this setting. 8.4.1.2 JavaScript s If pages of the web configura tor do not display properly in Internet Explorer, check that JavaScripts are allowed.
ZyXEL G-570U User’s Guide Chapter 8 Troubles hooting 105 Figure 76 Internet Options 2 Click the Custom Level... button. 3 Scroll down to Scripting . 4 Under Active scripting make sure that Enable is selected (the default). 5 Under Scripting of Java applets make sure that Enable is sele cted (the default).
ZyXEL G-570U User’s Guide 106 Chapter 8 Troubleshooting Figure 77 Security Setting s - Java S cripting 8.4.1.3 Java Permissions 1 From Internet Explorer , click To o l s , Internet Options and then the Security tab. 2 Click the Custom Level... button.
ZyXEL G-570U User’s Guide Chapter 8 Troubles hooting 107 Figure 78 Security Setting s - Java 8.4.1.3.1 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> u nder Java (Sun) is selected.
ZyXEL G-570U User’s Guide 108 Chapter 8 Troubleshooting Figure 79 Java (S un) 8.5 T esting the Connection to the G-570U 1 Click St a r t , (All) Programs , Accessories and then Command Pr ompt . 2 In the Command Pr ompt window , type “ping” followed by a s pace and the IP address of the G-570U (192.
ZyXEL G-570U User’s Guide Appendix A Product Specifications 109 A PPENDIX A Product S pecifications See also the introduction chapter for a general overview of the key features. S pecification T a bles Table 32 Device Specifications Default IP Address 192.
ZyXEL G-570U User’s Guide 110 Appendix A Product Specifications Operating Modes Access Point Client Bridge Access Point and Repeater Wireless Links Up to fo ur bridge links. T wo or more repeater links are supporte d. It is sugg ested that you only use up to three repeater links.
ZyXEL G-570U User’s Guide Appendix A Product Specifications 111 Approvals Security Wired Equivalent Pr ivacy (WEP) data encryption Dynamic WEP key exchange WiFi Protected Access (WP A) IEEE 802.1x RF frequency range 2.412~2. 462GHz: North America 2.
ZyXEL G-570U User’s Guide 112 Appendix A Product Specifications Power Adapter S p ecifications ELECTROST ATIC DISCHARGE EN61000-4-2 RADIO-FREQUENCY ELECTROMAGNETIC FIELD EN61000-4-3 EFT/BURST EN6100.
ZyXEL G-570U User’s Guide Appendix A Product Specifications 113 AC Power Adapter Model AD-121A Input Power 120 V olts AC 60 Hz Output Power 12 V olts DC ±5%, 1 Amp Power Consumption 12 W atts Safet.
ZyXEL G-570U User’s Guide 114 Appendix A Product Specifications.
ZyXEL G-570U User’s Guide Appendix B Setting up Your Computer’s IP Addr ess 115 A PPENDIX B Setting up Y our Computer ’ s IP Address All computers must have a 10M or 100M Et hernet adapter card and TCP/IP installed.
ZyXEL G-570U User’s Guide 116 Appendix B Setting up Your Computer’s IP Address Figure 81 WIndows 95/98/Me: Network: Co nfiguration Inst alling Component s 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.
ZyXEL G-570U User’s Guide Appendix B Setting up Your Computer’s IP Addr ess 117 3 Select Microsoft from the list of manufacturers. 4 Select Client for Microsoft Networks from the list of network clients and then click OK . 5 Restart your computer so the changes you made take ef fect.
ZyXEL G-570U User’s Guide 118 Appendix B Setting up Your Computer’s IP Address Figure 83 Windows 95/98/Me: TCP/IP Properties: DNS Configuration 4 Click the Gateway tab. • If you do not know your gateway’ s IP address, remove previously installed gateways.
ZyXEL G-570U User’s Guide Appendix B Setting up Your Computer’s IP Addr ess 119 Figure 84 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 85 Windows XP: Control Panel 3 Right-click Local Area Connection and then click Pr operties .
ZyXEL G-570U User’s Guide 120 Appendix B Setting up Your Computer’s IP Address Figure 86 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 .
ZyXEL G-570U User’s Guide Appendix B Setting up Your Computer’s IP Addr ess 121 • If you have a static IP address click Use the following IP Address and fill in the IP addr ess , Subnet mask , and Default gateway fields.
ZyXEL G-570U User’s Guide 122 Appendix B Setting up Your Computer’s IP Address Figure 89 Windows XP : Advanced TC P/IP Properti es 7 In the Internet Protocol TCP/IP Properties window (the General tab in Windows XP): • Click Obtain DNS server address automatically if you do not know your DNS server IP addre ss(es).
ZyXEL G-570U User’s Guide Appendix B Setting up Your Computer’s IP Addr ess 123 Figure 90 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 ind ows 2000/NT) to close the Local Area Connection Properties window .
ZyXEL G-570U User’s Guide 124 Appendix B Setting up Your Computer’s IP Address Figure 91 Macintosh OS 8/9: Apple Menu 2 Select Ethernet built-in from the Connect via list. Figure 92 Macintosh OS 8/9: TCP/IP 3 For dynamically assigned settings, select Using DHCP Server from the Configur e: list.
ZyXEL G-570U User’s Guide Appendix B Setting up Your Computer’s IP Addr ess 125 •F r o m t h e Configure box, select Manually . • T ype your IP address in the IP Address box. • T ype your subne t mask in the Subnet mask box. • T ype the IP a ddress of your G-570U in the Router address bo x.
ZyXEL G-570U User’s Guide 126 Appendix B Setting up Your Computer’s IP Address Figure 94 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.
ZyXEL G-570U User’s Guide Appendix B Setting up Your Computer’s IP Addr ess 127 Note: Make sure you are logged in as the ro ot administrator . Using the K Desktop Environment (KDE) Follow the steps below to configure your computer IP address using the KDE.
ZyXEL G-570U User’s Guide 128 Appendix B Setting up Your Computer’s IP Address • If you have a static IP address, click S tatically set IP Addresses and fill in the Address , Subnet mask , and Default Gateway Address fields. 3 Click OK to save the chan ges and close the Ethernet Device General screen.
ZyXEL G-570U User’s Guide Appendix B Setting up Your Computer’s IP Addr ess 129 • If you have a dynamic IP address, enter dhcp in the BOOTPROTO= field. The followi ng figure shows an ex ample. Figure 99 Red Hat 9.0: Dynamic IP Address Setting in ifconfig-eth0 • If you have a static IP address, enter static in the BOOTPROTO= field.
ZyXEL G-570U User’s Guide 130 Appendix B Setting up Your Computer’s IP Address Figure 102 Red Hat 9.0: Restart Eth ernet Card V erifying Settings Enter ifconfig in a terminal screen to ch eck your TCP/IP properties. Figure 103 Red Hat 9.0: Checking TCP/IP Properties [root@localhost init.
ZyXEL G-570U User’s Guide Appendix C Wir eless LANs 131 A PPENDIX C Wireless LANs Wireless LAN T opologies This section discusses ad-hoc and in frastructure w ireless LAN topologies.
ZyXEL G-570U User’s Guide 132 Appendix C Wireless LANs Figure 105 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.
ZyXEL G-570U User’s Guide Appendix C Wir eless LANs 133 Figure 106 Infrastructure WLAN Channel A channel is the radio frequency(ies) used by IEEE 802.
ZyXEL G-570U User’s Guide 134 Appendix C Wireless LANs Figure 107 RTS /C T S When station A sends data to the AP , it might no t know that the station B is already using the channel.
ZyXEL G-570U User’s Guide Appendix C Wir eless LANs 135 A large Fragmentation Thr eshold is recommended for networks not prone to interference while you should set a smaller thresh old for busy networks or ne tworks that are prone to interference.
ZyXEL G-570U User’s Guide 136 Appendix C Wireless LANs • Authentication Determines the identity of the users. • Authorization Determines the network services available to authenticated users once they are connected to the network. • Accounting Keeps track of the client’ s network activity .
ZyXEL G-570U User’s Guide Appendix C Wir eless LANs 137 EAP Authentication EAP (Extensible Authentication Protocol) is an au thentication protocol that runs on top of the IEEE802.1x transport mech anism in order to support multiple types of user au thentication.
ZyXEL G-570U User’s Guide 138 Appendix C Wireless LANs However , MD5 authentication has some weakness es. Since the authenticat ion server needs to get the plaintext passwords, the passwords mu st be stored. Thus someone other than the authentication server may access the password file.
ZyXEL G-570U User’s Guide Appendix C Wir eless LANs 139 WEP Authentication S t ep s Three different methods can be used to auth enticate wireless stations to the network: Open System , Shar ed Key , and Auto . The following figure illust rates the steps involved.
ZyXEL G-570U User’s Guide 140 Appendix C Wireless LANs 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.
ZyXEL G-570U User’s Guide Appendix C Wir eless LANs 141 TKIP uses 128-bit keys that are dyna mically genera ted and distributed by the authe ntication server . It includes a per-packet key mixing function, a Message Inte grity Check (MIC) named Michael, an extended initialization vector (IV) with sequen cing rules, and a re-keying mechanism.
ZyXEL G-570U User’s Guide 142 Appendix C Wireless LANs If the roaming feature is not enabled on the access points, information is not communicated between the access points when a wireless st ation moves between coverage are as. The wireless station may not be able to communicate with other wireless stations on the network and vice versa.
ZyXEL G-570U User’s Guide Appendix C Wir eless LANs 143 5 The access points must be connected to the Et hernet and be able to get IP addresses from a DHCP server if using dynamic IP address assignment.
ZyXEL G-570U User’s Guide 144 Appendix C Wireless LANs.
ZyXEL G-570U User’s Guide Appendix D IP Subnetting 145 A PPENDIX D IP Subnetting This appendix introduces IP addresses, IP address classes and subnet masks. Y ou use subnet masks to subdivid e a network in to smaller logical networks. Introduction to IP Addresses An IP address has two parts: the network numb er and the host ID.
ZyXEL G-570U User’s Guide 146 Appendix D IP Subne tting The following table shows the network number and host ID arrangement for classes A, B and C. An IP address with host IDs of all zeros is the IP address of the n etwork (192.168. 1.0 for example).
ZyXEL G-570U User’s Guide Appendix D IP Subnetting 147 Subnet Masks A subnet mask is used to dete rmine which bits are part of th e network number , and which bits are part of the host ID (using a logical AND operation).
ZyXEL G-570U User’s Guide 148 Appendix D IP Subne tting The first mask shown is the class “C” natural m ask. Normally if no mask is specified it is understood that the natura l mask is being used. Example: T wo Subnet s As an example, you have a class “C” address 1 92.
ZyXEL G-570U User’s Guide Appendix D IP Subnetting 149 Host IDs of all zeros represent the subnet itsel f and host IDs of all ones are the broadcast address for that subnet, so the actual number of hosts available on each subnet in the example above is 2 7 – 2 or 126 h osts for each subnet.
ZyXEL G-570U User’s Guide 150 Appendix D IP Subne tting Example Eight Subnet s Similarly use a 27-bit mask to create eight subnets (000, 001, 0 10, 01 1, 100, 101, 1 10 and 111 ) . Subnet Address: 192.1 68.1.0 Lowest Host ID: 192.1 68.1.1 Broadcast Address: 192.
ZyXEL G-570U User’s Guide Appendix D IP Subnetting 151 The following table shows class C IP ad dress last octet values for each subnet. The following table is a summary for class “C” subnet planning. Subnetting With Class A and Class B Networks.
ZyXEL G-570U User’s Guide 152 Appendix D IP Subne tting The following table is a summary for class “B” subnet planning. Table 52 Class B Subnet Planning NO. “BORROWED” HOST BIT S SUBNET MASK NO. SUBNETS NO. HOST S PER SUBNET 1 255.255.128.0 (/17) 2 32766 2 255.
ZyXEL G-570U User’s Guide Appendix E Open Softwar e Announcements 153 Appendix E Open Sof tware Announcement s Notice Information herein is subject to change withou t notice. Companies, name s, and data used in examples herein are fictitious unless otherwise noted.
ZyXEL G-570U User’s Guide 154 Appendix E Open Software Announcements on the modified code, either by including the sources along w ith the binaries you deliver (or with any device containing such binaries) or w ith a written of fer to supply the source code to the general public for three years.
ZyXEL G-570U User’s Guide Appendix E Open Softwar e Announcements 155 T o protect your rights, we need to make restrictio ns that forbid anyo ne to deny you these rights or to ask you to surrender the rights. These re strictions translate to certain responsibilities for you if you distribute copies of the software, or if y ou modify it.
ZyXEL G-570U User’s Guide 156 Appendix E Open Software Announcements b) Y ou must cause any work that you distribute or publ ish, that in whole or in part contains or is derived from the Program or any part thereof, to be licensed as a whole at no charge to all third parties under the terms of this License.
ZyXEL G-570U User’s Guide Appendix E Open Softwar e Announcements 157 the executable. If distribution of executable or object code is made by offering access to copy from a designated place, then of.
ZyXEL G-570U User’s Guide 158 Appendix E Open Software Announcements 9. The Free Software Foundation may publish revised and/or ne w versions of the General Public License from time to time. Such new vers ions will be similar in spirit to the present version, but may differ in detail to address new problems or c oncerns.
ZyXEL G-570U User’s Guide Index 159 Index A Access Point see AP Address Assignment 53 Ad-hoc 57 Advanced Encryption St andard see AES AES 140 Alternative subnet mask notation 147 Antenna 111 antenna.
ZyXEL G-570U User’s Guide 160 Index E EAP 25 , 71 , 75 , 77 Authentication 137 Encryption 25 , 76 , 140 ESS 58 , 132 ESSID 58 Ethernet 24 , 30 , 31 Cables 24 Ports 109 European Plug S tandards 11 2 .
ZyXEL G-570U User’s Guide Index 161 North American Plug S tandards 11 2 O One-T ouch Intelli gent Security T echno logy see OTIST Open System 73 Operating Modes 11 0 Operation Humidity 109 Operation.
ZyXEL G-570U User’s Guide 162 Index T TCP/IP 31 T emperature 109 T emporal Key Integrity Protocol see TKIP T esting 108 TKIP 140 T ools, Diag nostic 11 0 Tr a c i ng 25 T r ademarks 3 T roub leshoot.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il ZyXEL G-570U è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del ZyXEL G-570U - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso ZyXEL G-570U imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul ZyXEL G-570U ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il ZyXEL G-570U, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del ZyXEL G-570U.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il ZyXEL G-570U. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo ZyXEL G-570U insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
