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ZyXEL Communications nbg-418n 20.2 NBG-418NAccess and Login, cmd, DHCP, None, DHCP, admin, Login, Status, Client, ipconfig, Start > Run, Router Mode, Default Gateway, LAN information

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Chapter 20 Troubleshooting

20.2 NBG-418N Access and Login

I don’t know the IP address of my NBG-418N.

1The default IP address in router mode is 192.168.1.1 and in non-router mode is 192.168.1.2.

2If you changed the IP address and have forgotten it, you might get the IP address of the NBG-418N by looking up the IP address of the default gateway for your computer. To do this in most Windows computers, click Start > Run, enter cmd, and then enter ipconfig. The IP address of the Default Gateway might be the IP address of the NBG-418N (it depends on the network), so enter this IP address in your Internet browser.Set your device to Router Mode, login (see the Quick Start Guide for instructions) and go to the Device Information table in the Status screen. Your NBG-418N’s IP address is available in the Device Information table.

•If the DHCP setting under LAN information is None, your device has a fixed IP address.

•If the DHCP setting under LAN information is Client, then your device receives an IP address from a DHCP server on the network.

3If your NBG-418N is a DHCP client, you can find your IP address from the DHCP server. This information is only available from the DHCP server which allocates IP addresses on your network. Find this information directly from the DHCP server or contact your system administrator for more information.

4Reset your NBG-418N to change all settings back to their default. This means your current settings are lost. See Section 20.4 on page 144 in the Troubleshooting for information on resetting your NBG-418N.

I forgot the username and password.

1The default username is admin and default password is 1234.

2If this does not work, you have to reset the device to its factory defaults. See Section 20.4 on page 144.

I cannot see or access the Login screen in the Web Configurator.

1Make sure you are using the correct IP address.

•The default IP address is 192.168.1.1 (router mode).

•If you changed the IP address, use the new IP address.

•If you changed the IP address and have forgotten it, see the troubleshooting suggestions for I don’t know the IP address of my NBG-418N.

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142	NBG-418N User’s Guide

Contents

Copyright © ZyXEL Communications Corporation Page Contents Overview Page Table of Contents Part I: User’s Guide Chapter Modes WAN LAN DHCP Server Network Address Translation Page Page Page Page Page Introduction 1.1 Overview 1.2 Securing the NBG-418N 1.3 LEDs 1.4 The WPS Button 1.5 Wall Mounting The Web Configurator 2.1 Overview 2.2Accessing the Web Configurator Administrator Inactivity Timer Go to Wizard Setup Go to Advanced Setup 2.3 Resetting the NBG-418N Page Connection Wizard 3.1 Wizard Setup 3.2Connection Wizard: STEP 1: System Information 3.3 Connection Wizard: STEP 2: Wireless LAN Auto Channel Selection Channel Selection field Pre- Shared Key 3.4 Connection Wizard: STEP 3: Internet Configuration CONNECTION TYPE PPP over Ethernet Page Page DNS Server Wizard WAN > Internet Connection From ISP Page 3.5 Connection Wizard Complete Page Page Modes 4.1 Overview 4.2 Setting your NBG-418Nto Router Mode 5Go to Maintenance > Sys OP Mode > General and select Router ICONDESCRIPTION Server Off by scheduler Configured Unconfigured DHCP Table (Details...) LABEL DESCRIPTION Packet Statistics (Details...) Poll Interval(s) Idle Dial Drop WLAN Station Status (Details...) Association List Router Mode LINK TAB FUNCTION 4.3 Setting your NBG-418Nto AP Mode AP Mode Network > Wireless LAN > WPS screen or Universal Repeater LAN WLAN Page 4.4 Setting your NBG-418Nto Universal Repeater Mode Mode Page Universal Repeater Mode 4.5 Setting your NBG-418Nto Client Bridge Mode Client Bridge Mode Page Page Page Tutorials 5.1 Overview 5.2How to Connect to the Internet from an AP Push Button NBG-418N Wireless Client WITHIN 2 MINUTES SECURITY INFO COMMUNICATION Authentication by PIN 5.3Enable and Configure Wireless Security without WPS on your NBG-418N Start > Programs 4Select SSID_Example3 and click Connect Confirm Save Save Page Page Page Wireless LAN 6.1 Overview 6.2 What You Can Do 6.3 What You Should Know 6.4 General Wireless LAN Screen Apply No Security No Security Static WEP 64-bit 128-bit Auto, Open System Shared Key 6.5 MAC Filter 6.6 Wireless LAN Advanced Screen 256 and 6.7 Quality of Service (QoS) Screen 6.8 WPS Screen 6.9 WPS Station Screen 6.10 Scheduling Screen 6.11 AP Select Screen 6.12 WLAN Info Screen Page WAN 7.1 Overview 7.2 What You Need To Know 7.3 Internet Connection Use Fixed IP Address IP Subnet Mask Gateway IP Address Manual Page PPPoE Nailed-Up Page User Name Page LAN 8.1 Overview 8.2 What You Need To Know 8.3 LAN IP Screen Page Page DHCP Server 9.1 Overview 9.2What You Can Do 9.3What You Need To Know 9.4 General Screen 9.5 Advanced Screen User-Defined Defined WAN > Internet Connection 9.6 Client List Screen Network Address Translation 10.1 Overview 10.2What You Can Do 10.3 General NAT Screen 10.4 NAT Application Screen Name Service TCP&UDP 10.5 Technical Reference Page Page Dynamic DNS 11.1 Overview 11.2 Dynamic DNS Screen Page Firewall 12.1 Overview 12.2What You Can Do 12.3 What You Need To Know 12.4General Firewall Screen 12.5 Services Screen PPTP Passthrough: L2TP Passthrough: Remote Management 13.1 Overview 13.2 WWW Screen All Page Universal Plug-and-Play(UPnP) 14.1 Overview 14.2 What You Need to Know 14.3 Configuring UPnP Internet Connection Properties Add 1Click Start and then Control Panel 2Double-click Network Connections 3Select My Network Places under Other Places Local Network Invoke Page System 15.1 Overview 15.2What You Can Do 15.3System General Screen 15.4 Time Setting Screen Page o'clock Last o'clock field Logs 16.1 Overview 16.2 What You Need to Know 16.3 View Log Screen Clear Logs Tools 17.1 Overview 17.2What You Can Do 17.3Firmware Upload Screen Browse Firmware Upload In Process Return 17.4 Configuration Screen 17.5 Restart Screen Page Page Sys OP Mode 18.1 Overview 18.2 General Screen Page Language 19.1 Language Screen Page Troubleshooting 20.1Power, Hardware Connections, and LEDs 20.2 NBG-418NAccess and Login 20.3Internet Access 20.4Resetting the NBG-418Nto Its Factory Defaults 20.5Wireless Problems Page IP Addresses and Subnetting 1ST OCTET: 2ND 3RD 4TH OCTET OCTET: BINARY 1ST DECIMAL OCTET SUBNET MASK Page Table 63 Subnet IP/SUBNET MASK NETWORK NUMBER LAST OCTET BIT VALUE Table 64 Subnet Table 65 Subnet Table 66 Subnet SUBNET FIRST ADDRESS NO. “BORROWED” NO. SUBNETS NO. HOSTS PER HOST BITS Page Page Page Pop-upWindows, JavaScripts and Java Permissions 2Select Settings…to open the Pop-upBlocker Settings screen Allowed sites Close Custom Level Scripting Active scripting Scripting of Java applets Microsoft VM Java permissions 2Make sure that Use Java 2 for <applet> under Java (Sun) is selected Figure 121 Java (Sun) Tools Options Content Preferences Choose how you prefer to handle Open all JavaScript Options Page Setting Up Your Computer’s IP Address Page 5The Internet Protocol TCP/IP Properties window opens Obtain an IP address automatically 7Click OK to close the Internet Protocol (TCP/IP) Properties window 8Click OK to close the Local Area Connection Properties window 1Click Start > All Programs > Accessories > Command Prompt Command Prompt Page Continue 7The Internet Protocol Version 4 (TCP/IPv4) Properties window opens 9Click OK to close the Internet Protocol (TCP/IP) Properties window 10Click OK to close the Local Area Connection Properties window Page Page 6The Internet Protocol Version 4 (TCP/IPv4) Properties window opens 8Click OK to close the Internet Protocol (TCP/IP) Properties window 9Click OK to close the Local Area Connection Properties window 1Click Apple > System Preferences System Preferences Built-in Configure Using DHCP Configure IPv4 TCP/IP Manually Subnet Mask Apply Now Applications > Utilities > Network Utilities Network Interface 2In System Preferences, click the Network icon Configure Network interface 1Click System > Administration > Network Network Settings Unlock Authenticate Page Static IP address IP address Subnet mask Gateway address DNS System > Administration > Network Tools Network device Devices Interface Statistics 1Click K Menu > Computer > Administrator Settings (YaST) Run as Root - KDE su YaST Control Center Network Devices Network Card Overview Network Card Setup Address Dynamic Address (DHCP) Statically assigned IP Address Hostname Hostname/DNS Finish KNetwork Manager Task bar Show Connection Information Page Wireless LANs Page Page Figure 136 RTS/CTS RTS/CTS Fragmentation Threshold Fragmentation Threshold DATA RATE (MBPS) MODULATION SECURITY SECURITY TYPE LEVEL Page Page EAP-MD5 EAP-TLS EAP-TTLS PEAP LEAP Page Page AUTHENTICATION ENCRYPTIO ENTER METHOD/ KEY IEEE Page Page Common Services Page Page Page Legal Information Copyright Certifications Viewing Certifications ZyXEL Limited Warranty Open Source Licenses (all products) Regulatory Information National Restrictions Safety Warnings Page Page 39, 46, 50 40, 46, 50 Page 35 104 Index 72, 82 SSID 39, 46, 53, 69, 72, 82 30 145