Page 1 Wireless N Home Router IMPORTANT! READ CAREFULLY Default Login Details BEFORE USE. LAN IP http://192.168.1.1 Address KEEP THIS GUIDE FOR FUTURE User Name admin REFERENCE. Password 1234 IMPORTANT! Version 1.00 Edition 1, 4/2012 www.zyxel.com www.zyxel.com Copyright © 2012 ZyXEL Communications Corporation...
Page 2 Related Documentation • Quick Start Guide The Quick Start Guide shows how to connect the NBG-418N and configure it using the Web Configurator wizard. NBG-418N User’s Guide...
Page 3: Table Of Contents
LAN .................................93 DHCP Server ............................97 Network Address Translation ........................101 Dynamic DNS ............................109 Firewall ..............................111 Remote Management ..........................115 Universal Plug-and-Play (UPnP) ......................119 System ..............................125 Logs ..............................129 Tools ..............................131 Sys OP Mode ............................137 Language ..............................139 Troubleshooting ............................141 NBG-418N User’s Guide...
Page 4 Contents Overview NBG-418N User’s Guide...
Page 5: Table Of Contents
Contents Overview ..........................3 Table of Contents ..........................5 Part I: User’s Guide ..................11 Chapter 1 Introduction............................13 1.1 Overview ............................13 1.2 Securing the NBG-418N ........................14 1.3 LEDs ..............................15 1.4 The WPS Button ..........................15 1.5 Wall Mounting ...........................16 Chapter 2 The Web Configurator ........................17 2.1 Overview ............................17...
Page 6 5.1 Overview ............................57 5.2 How to Connect to the Internet from an AP ..................57 5.2.1 Configure Wireless Security Using WPS on both your NBG-418N and Wireless Client ..57 5.3 Enable and Configure Wireless Security without WPS on your NBG-418N ........61 Part II: Technical Reference................
Page 7 10.2 What You Can Do .........................102 10.2.1 What You Need To Know .....................102 10.3 General NAT Screen ........................103 10.4 NAT Application Screen ......................104 10.5 Technical Reference ........................106 10.5.1 NAT Port Forwarding: Services and Port Numbers .............106 10.5.2 NAT Port Forwarding Example ....................107 NBG-418N User’s Guide...
Page 8 Firewall .............................. 111 12.1 Overview ............................. 111 12.2 What You Can Do ......................... 111 12.3 What You Need To Know ......................112 12.3.1 About the NBG-418N Firewall ..................... 112 12.3.2 VPN Pass Through Features ....................112 12.4 General Firewall Screen ......................112 12.5 Services Screen...
Page 9 20.1 Power, Hardware Connections, and LEDs ..................141 20.2 NBG-418N Access and Login .......................142 20.3 Internet Access ..........................143 20.4 Resetting the NBG-418N to Its Factory Defaults ................144 20.5 Wireless Problems ........................145 Appendix A IP Addresses and Subnetting..................147 Appendix B Pop-up Windows, JavaScripts and Java Permissions..........157 Appendix C Setting Up Your Computer’s IP Address ..............167...
Page 10 Table of Contents NBG-418N User’s Guide...
Page 11: User's Guide
User’s Guide...
Page 13: Introduction
Your can create the following connections using the NBG-418N: • LAN. You can connect network devices via the Ethernet ports of the NBG-418N so that they can communicate with each other and access the Internet.
Page 14: Securing The Nbg-418N
If you forget your password, you will have to reset the NBG-418N to its factory default settings. If you backed up an earlier configuration file, you would not have to totally re-configure the NBG-418N.
Page 15: Leds
The WPS status is not configured or disabled. 1.4 The WPS Button Your NBG-418N supports WiFi Protected Setup (WPS), which is an easy way to set up a secure wireless network. WPS is an industry standard specification, defined by the WiFi Alliance.
Page 16: Wall Mounting
Make sure the screws are fastened well enough to hold the weight of the NBG-418N with the connection cables. Align the holes on the back of the NBG-418N with the screws on the wall. Hang the NBG-418N on the screws.
Page 17: The Web Configurator
Your computer must be in the same subnet in order to access this website address. In router mode, the NBG-418N can assign your computer an IP address, so you must set your computer to get an IP address automatically (computer factory default) or give it a fixed IP address in the range between 192.168.1.3 and 192.168.1.254 (see the appendices).
Page 18 • Click Go to Wizard Setup to use the Configuration Wizard for basic Internet and Wireless setup. • Click Go to Advanced Setup to view and configure all the NBG-418N’s settings. • Select a language to go to the basic Web Configurator in that language. To change to the...
Page 19: Resetting The Nbg-418N
Make sure the power LED is on. Press the RESET button for longer than 1 second to restart/reboot the NBG-418N. Press the RESET button for longer than five seconds to set the NBG-418N back to its factory- default configurations. NBG-418N User’s Guide...
Page 20 Chapter 2 The Web Configurator NBG-418N User’s Guide...
Page 21: Connection Wizard
Leave a field blank if you don’t have that information. After you access the NBG-418N Web Configurator, click Go to Wizard setup. You can click Go to Advanced setup to skip this wizard setup and configure basic or advanced features accordingly.
Page 22: Connection Wizard: Step 1: System Information
• In Windows XP, click Start > My Computer > View system information and then click the Computer Name tab. Note the entry in the Full computer name field and enter it as the NBG- 418N System Name. NBG-418N User’s Guide...
Page 23: Domain Name
DESCRIPTION System Name System Name is a unique name to identify the NBG-418N in an Ethernet network. Enter a descriptive name. This name can be up to 30 alphanumeric characters long. Spaces are not allowed, but dashes "-" and underscores "_" are accepted.
Page 24: Wpa-Psk Or Wpa2-Psk Security
Name (SSID) Enter a descriptive name (up to 32 printable 7-bit ASCII characters) for the wireless LAN. If you change this field on the NBG-418N, make sure all wireless stations use the same SSID in order to access the network.
Page 25: Connection Wizard: Step 3: Internet Configuration
Click Exit to close the wizard screen without saving. 3.4 Connection Wizard: STEP 3: Internet Configuration The NBG-418N offers three Internet connection types. They are Ethernet, PPP over Ethernet or PPTP. The wizard attempts to detect which WAN connection type you are using. If the wizard does not detect a connection type, you must select one from the drop-down list box.
Page 26: Ethernet Connection
By implementing PPPoE directly on the NBG-418N (rather than individual computers), the computers on the LAN do not need PPPoE software installed, since the NBG-418N does that part of the task. Furthermore, with NAT, all of the LAN's computers will have Internet access.
Page 27: Pptp Connection
PPTP supports on-demand, multi-protocol, and virtual private networking over public networks, such as the Internet. Refer to the appendix for more information on PPTP. Note: The NBG-418N supports one PPTP server connection at any given time. NBG-418N User’s Guide...
Page 28: Your Ip Address
Click Exit to close the wizard screen without saving. 3.4.4 Your IP Address The following wizard screen allows you to assign a fixed IP address or give the NBG-418N an automatically assigned IP address depending on your ISP. NBG-418N User’s Guide...
Page 29: Wan Ip Address Assignment
Note: Regardless of your particular situation, do not create an arbitrary IP address; always follow the guidelines above. For more information on address assignment, please refer to RFC 1597, Address Allocation for Private Internets and RFC 1466, Guidelines for Management of IP Address Space. NBG-418N User’s Guide...
Page 30: Ip Address And Subnet Mask
Once you have decided on the network number, pick an IP address that is easy to remember, for instance, 192.168.1.1, for your NBG-418N, but make sure that no other device on your network is using that IP address.
Page 31: Wan Mac Address
The DNS server is extremely important because without it, you must know the IP address of a computer before you can access it. The NBG-418N uses a system DNS server (in the order you specify here) to resolve domain names for DDNS and the time server.
Page 32: Connection Wizard Complete
Select this option to clone the MAC address of the computer (displaying in the screen) computer's MAC from which you are configuring the NBG-418N. It is advisable to clone the MAC address address - MAC from a computer on your LAN even if your ISP does not presently require MAC address Address authentication.
Page 33 Chapter 3 Connection Wizard Well done! You have successfully set up your NBG-418N to operate on your network and access the Internet. NBG-418N User’s Guide...
Page 34 Chapter 3 Connection Wizard NBG-418N User’s Guide...
Page 35: Modes
• Router: Use this mode if you want to use routing functions such as LAN DHCP, NAT, firewall and so on on the NBG-418N (N). The NBG-418N has separate LAN and WAN network IP addresses. Connect the WAN port to an Internet Access Device (IAD) such as a broadband modem.
Page 36: Setting Your Nbg-418N To Router Mode
Figure 23 Client Bridge 4.2 Setting your NBG-418N to Router Mode The NBG-418N is set to wireless router mode by default. If it was changed and now you want to set it back, do the following procedure. Connect your computer to the LAN port of the NBG-418N.
Page 37: Status Screen (Router Mode)
A pop-up window appears providing information on this mode. Click OK in the pop-up message window. Click Apply. Note: Wait while the NBG-418N restarts, then log in to the Web Configurator again. The NBG-418N IP address is now 192.168.1.1. 4.2.1 Status Screen (Router Mode) The screen below shows the status screen in Router mode.
Page 38 The following table describes the labels shown in the Status screen in Router mode. Table 14 Web Configurator Status Screen (Router Mode) LABEL DESCRIPTION Device Information System Name This is the System Name you enter in the Maintenance > System > General screen. It is for identification purposes. NBG-418N User’s Guide...
Page 39 - CPU Usage This displays what percentage of the NBG-418N’s processing ability is currently used. When this percentage is close to 100%, the NBG-418N is running at full load, and the throughput is not going to improve anymore. If you want some applications to have more throughput, you should turn off other applications.
Page 40 DHCP (Dynamic Host Configuration Protocol, RFC 2131 and RFC 2132) allows individual clients to obtain TCP/IP configuration at start-up from a server. You can configure the NBG-418N’s LAN as a DHCP server or disable it. When configured as a server, the NBG-418N provides the TCP/IP configuration for the clients.
Page 41 Rx B/s This displays the reception speed in bytes per second on this port. System Up Time This is the total time the NBG-418N has been on. Poll Interval(s) Enter the time interval for refreshing statistics in this field. Set Interval Click this button to apply the new poll interval you entered in the Poll Interval(s) field.
Page 42: Router Mode Navigation Panel
This field displays the time a wireless station first associated with the NBG-418N’s WLAN network. Refresh Click Refresh to reload the list. 4.2.2 Router Mode Navigation Panel Use the menu in the navigation panel menus to configure NBG-418N features in Router Mode. NBG-418N User’s Guide...
Page 43 General Use this screen to configure wireless LAN. MAC Filter Use the MAC filter screen to configure the NBG-418N to block access to devices or block the devices from accessing the NBG-418N. Advanced This screen allows you to configure advanced wireless settings.
Page 44: Setting Your Nbg-418N To Ap Mode
Connect your computer to the LAN port of the NBG-418N. The default LAN IP address of the NBG-418N is 192.168.1.1 in router mode (192.168.1.2 by default in non-router mode). In router mode, the NBG-418N can assign your computer an IP address, so you must set your computer to get an IP address automatically (computer factory default) or give it a fixed IP address in the range between 192.168.1.3 and 192.168.1.254.
Page 45: Status Screen (Ap Mode)
A pop-up window appears providing information on this mode. Click OK in the pop-up message window. Click Apply. Your NBG-418N is now in AP Mode. Note: Wait while the NBG-418N restarts, then log in to the Web Configurator again. 4.3.1 Status Screen (AP Mode) Click on Status.
Page 46 - 802.11 Mode This shows the IEEE 802.11 standard that the NBG-418N supports. Wireless clients must support the same standard in order to be able to connect to the NBG-418N - WPS This shows the WPS (WiFi Protected Setup) Status. Click the status to display Network >...
Page 47: Ap Navigation Panel
Status NBG-418N. 4.3.2 AP Navigation Panel Use the menu in the navigation panel to configure NBG-418N features in AP Mode. The following screen and table show the features you can configure in AP Mode. Figure 32 Menu: AP Mode The following table describes the sub-menus.
Page 48: Setting Your Nbg-418N To Universal Repeater Mode
Connect your computer to the LAN port of the NBG-418N. The default LAN IP address of the NBG-418N is 192.168.1.1 in router mode (192.168.1.2 by default in non-router mode). In router mode, the NBG-418N can assign your computer an IP address, so you must set your computer to get an IP address automatically (computer factory default) or give it a fixed IP address in the range between 192.168.1.3 and 192.168.1.254.
Page 49: Status Screen (Universal Repeater Mode)
Chapter 4 Modes Note: Wait while the NBG-418N restarts, then log in to the Web Configurator again. 4.4.1 Status Screen (Universal Repeater Mode) Click on Status. The screen below shows the status screen in Universal Repeater Mode. Figure 34 Status Screen (Universal Repeater Mode) The following table describes the labels shown in the Status screen.
Page 50 Network > Wireless LAN > WPS screen. WLAN STA Information - SSID This is the name of the selected AP that the NBG-418N is associating with. - Security Mode This shows the wireless security the NBG-418N is using to connect to the AP.
Page 51: Universal Repeater Navigation Panel
Chapter 4 Modes 4.4.2 Universal Repeater Navigation Panel Use the menu in the navigation panel to configure NBG-418N features in Universal Repeater Mode. The following screen and table show the features you can configure in Universal Repeater Mode. Figure 35 Menu: Universal Repeater Mode The following table describes the sub-menus.
Page 52: Setting Your Nbg-418N To Client Bridge Mode
Connect your computer to the LAN port of the NBG-418N. The default LAN IP address of the NBG-418N is 192.168.1.1 in router mode (192.168.1.2 by default in non-router mode). In router mode, the NBG-418N can assign your computer an IP address, so you must set your computer to get an IP address automatically (computer factory default) or give it a fixed IP address in the range between 192.168.1.3 and 192.168.1.254.
Page 53: Status Screen (Client Bridge Mode)
Chapter 4 Modes Note: Wait while the NBG-418N restarts, then log in to the Web Configurator again. 4.5.1 Status Screen (Client Bridge Mode) Click on Status. The screen below shows the status screen in Client Bridge Mode. Figure 37 Status Screen (Client Bridge Mode) The following table describes the labels shown in the Status screen.
Page 54: Client Bridge Navigation Panel
Use this screen to view port packet statistics. 4.5.2 Client Bridge Navigation Panel Use the menu in the navigation panel to configure NBG-418N features in Client Bridge Mode. The following screen and table show the features you can configure in Client Bridge Mode.
Page 55 Network WLAN AP Select Use this screen to choose an access point that you want the NBG-418N to connect to. You should know the security settings of the target AP. WLAN Use this screen to view the SSID and security of the selected AP wireless Information network.
Page 56 Chapter 4 Modes NBG-418N User’s Guide...
Page 57: Tutorials
This section gives you an example of how to set up wireless network using WPS. This example uses the NBG-418N as the AP and NWD210N as the wireless client which connects to a notebook. Note: The wireless client must be a WPS-aware device (for example, a WPS USB adapter or PCI card).
Page 58 Log into NBG-418N’s Web Configurator and press Push Button in the Network > Wireless LAN > WPS Station screen. Note: Your NBG-418N has a WPS button located on its panel, as well as a WPS button in its configuration utility. Both buttons have exactly the same function; you can use one or the other.
Page 59 This may take up to two minutes. Then the wireless client is able to communicate with the NBG-418N securely. The following figure shows you the example to set up wireless network and security on NBG-418N and wireless client (ex. NWD210N in this example) by using PIN method.
Page 60 Chapter 5 Tutorials Figure 41 Example WPS Process: PIN Method Wireless Client NBG-418N WITHIN 2 MINUTES Authentication by PIN SECURITY INFO COMMUNICATION NBG-418N User’s Guide...
Page 61: Enable And Configure Wireless Security Without Wps On Your Nbg-418N
WPA-PSK (Pre-Shared Key: ThisismyWPA-PSKpre-sharedkey) Follow the steps below to configure the wireless settings on your NBG-418N. The instructions require that your hardware is connected (see the Quick Start Guide) and you are logged into the Web Configurator through your LAN connection (see Section 2.2 on page...
Page 62 Note: We use the ZyXEL M-302 wireless adapter utility screens as an example for the wireless client. The screens may vary for different models. The NBG-418N supports IEEE 802.11b, IEEE 802.11g and IEEE 802.11n wireless clients. Make sure that your notebook or computer’s wireless adapter supports one of these standards.
Page 63 The Confirm Save window appears. Check your settings and click Save to continue. Figure 46 Confirm Save Check the status of your wireless connection in the screen below. If your wireless connection is weak or you have no connection, see the Troubleshooting section of this User’s Guide. NBG-418N User’s Guide...
Page 64 If your connection is successful, open your Internet browser and enter http://www.zyxel.com or the URL of any other web site in the address bar. If you are able to access the web site, your wireless connection is successfully configured. NBG-418N User’s Guide...
Page 65: Technical Reference
Technical Reference...
Page 67: Wireless Lan
The wireless network is the part in the blue circle. In this wireless network, devices A and B are called wireless clients. The wireless clients use the access point (AP) to interact with other devices (such as the printer) or with the Internet. Your NBG-418N is the AP in the above example. NBG-418N User’s Guide...
Page 68: What You Can Do
81). • Use the AP Select screen to choose an access point that you want the NBG-418N (in universal repeater or client bridge mode) to connect to. You should know the security settings of the target • Use the WLAN Info screen to view the SSID and security of the selected AP wireless network.
Page 69: What You Should Know
Some wireless devices, such as scanners, can detect wireless networks but cannot use wireless networks. These kinds of wireless devices might not have MAC addresses. Hexadecimal characters are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, and F. NBG-418N User’s Guide...
Page 70: General Wireless Lan Screen
When you select WPA2-PSK in your NBG-418N, you can also select an option (WPA Compatible) to support WPA-PSK as well. In this case, if some wireless clients support WPA-PSK and some support WPA2-PSK, you should set up WPA2-PSK and select the WPA Compatible option in the NBG-418N.
Page 71 Chapter 6 Wireless LAN Note: If you are configuring the NBG-418N from a computer connected to the wireless LAN and you change the NBG-418N’s SSID, channel or security settings, you will lose your wireless connection when you press Apply to confirm. You must then change the wireless settings of your computer to match the NBG-418N’s new...
Page 72: No Security
Table 26 Network > Wireless LAN > General LABEL DESCRIPTION WLAN STA This section is available only when the NBG-418N is in universal repeater mode. This shows Information the wireless and security settings of the selected AP wireless network. SSID This displays the Service Set IDentity of the wireless device to which you are connecting.
Page 73: Wep Encryption
Both the wireless stations and the access points must use the same WEP key. Your NBG-418N allows you to configure up to four 64-bit or 128-bit WEP keys but only one key can be enabled at any one time.
Page 74: Wpa-Psk/Wpa2-Psk
The preceding "0x", that identifies a hexadecimal key, is entered automatically. Key 1 to Key 4 The WEP keys are used to encrypt data. Both the NBG-418N and the wireless stations must use the same WEP key for data transmission.
Page 75: Mac Filter
Click Reset to reload the previous configuration for this screen. 6.5 MAC Filter The MAC filter screen allows you to configure the NBG-418N to give exclusive access to up to 16 devices (Allow) or exclude up to 16 devices from accessing the NBG-418N (Deny). Every Ethernet device has a unique MAC (Media Access Control) address.
Page 76: Wireless Lan Advanced Screen
Filter Action Define the filter action for the list of MAC addresses in the MAC Address table. Select Deny to block access to the NBG-418N, MAC addresses not listed will be allowed to access the NBG-418N. Select Allow to permit access to the NBG-418N, MAC addresses not listed will be denied access to the NBG-418N.
Page 77 NBG-418N. CTS Protection When set to None, the NBG-418N protects wireless communication against interference. Select Auto to let the NBG-418N determine whether to turn this feature on or off in the current environment. Tx Power This field controls the transmission power of the NBG-418N. When using the NBG-418N with a notebook computer, select a lower transmission power level when you are close to the AP in order to conserve battery power.
Page 78: Quality Of Service (Qos) Screen
This field is available only when the NBG-418N is in universal repeater mode. overwrites WLAN Select Enabled to have the NBG-418N copy the SSID and wireless security settings of AP setting the associated AP, and use them for wireless connections between the NBG-418N and its wireless clients.
Page 79: Wps Screen
DESCRIPTION Enable WMM QoS Check this to have the NBG-418N automatically give a service a priority level according to the ToS value in the IP header of packets it sends. WMM QoS (Wifi MultiMedia Quality of Service) gives high priority to voice and video, which makes them run more smoothly.
Page 80: Wps Station Screen
Click this button to remove all configured wireless and wireless security settings for WPS connections on the NBG-418N. Apply Click Apply to save your changes back to the NBG-418N. Refresh Click Refresh to get this screen information afresh. 6.9 WPS Station Screen Use this screen when you want to add a wireless station using WPS.
Page 81: Scheduling Screen
Wireless LAN will turn on between the two times you enter in these fields. Note: Entering the same begin time and end time will mean the whole day. Apply Click Apply to save your changes back to the NBG-418N. Reset Click Reset to reload the previous configuration for this screen.
Page 82: Ap Select Screen
Chapter 6 Wireless LAN 6.11 AP Select Screen Use this screen to choose an access point that you want the NBG-418N (in universal repeater or client bridge mode) to connect to. You should know the security settings of the target AP.
Page 83: Wlan Info Screen
Table 37 Network > Wireless LAN > WLAN Info LABEL DESCRIPTION WLAN SSID This displays the Service Set IDentity of the selected wireless device. Security Mode This displays the type of security configured on the selected wireless device. NBG-418N User’s Guide...
Page 84 Chapter 6 Wireless LAN NBG-418N User’s Guide...
Page 85: Wan
H A PT ER 7.1 Overview This chapter discusses the NBG-418N’s WAN screens. Use these screens to configure your NBG- 418N for Internet access. A WAN (Wide Area Network) connection is an outside connection to another network or the Internet. It connects your private networks (such as a LAN (Local Area Network) and other networks, so that a computer in one location can communicate with computers in other locations.
Page 86: Internet Connection
Chapter 7 WAN WAN IP Address The WAN IP address is an IP address for the NBG-418N, which makes it accessible from an outside network. It is used by the NBG-418N to communicate with other devices in other networks. It can be static (fixed) or dynamically assigned by the ISP each time the NBG-418N tries to access the Internet.
Page 87 Select Auto if you want to have the Maximum Transmission Unit (MTU) automatically configured. Select Manual if you want to enter the MTU manually in the field below. Enter the MTU or the largest packet size per frame that your NBG-418N can receive and process.
Page 88: Pppoe Encapsulation
By implementing PPPoE directly on the NBG-418N (rather than individual computers), the computers on the LAN do not need PPPoE software installed, since the NBG-418N does that part of the task. Furthermore, with NAT, all of the LANs’ computers will have access.
Page 89 Type your password again to make sure that you have entered is correctly. Confirm MTU Size Enter the MTU or the largest packet size per frame that your NBG-418N can receive and process. Nailed-Up Select Nailed-Up Connection if you do not want the connection to time out.
Page 90: Pptp Encapsulation
WAN MAC The MAC address section allows users to configure the WAN port's MAC address by using Address the NBG-418N’s MAC address, copying the MAC address from a computer on your LAN or manually entering a MAC address. Factory default Select Factory default to use the factory assigned default MAC Address.
Page 91 Type the password associated with the User Name above. Retype to Confirm Type your password again to make sure that you have entered correctly. MTU Size Enter the MTU or the largest packet size per frame that your NBG-418N can receive and process. NBG-418N User’s Guide...
Page 92 Enter your WAN IP address in this field if you selected Use Fixed IP Address. Address My IP Subnet Your NBG-418N will automatically calculate the subnet mask based on the IP address Mask that you assign. Unless you are implementing subnetting, use the subnet mask computed by the NBG-418N.
Page 93: Lan
The LAN screens can help you configure a LAN DHCP server and manage IP addresses. 8.2 What You Need To Know The actual physical connection determines whether the NBG-418N ports are LAN or WAN ports. There are two separate IP networks, one inside the LAN network and the other outside the WAN network as shown next.
Page 94: Ip Pool Setup
Chapter 8 LAN Figure 67 LAN and WAN IP Addresses The LAN parameters of the NBG-418N are preset in the factory with the following values: • IP address of 192.168.1.1 with subnet mask of 255.255.255.0 (24 bits) • DHCP server enabled with 32 client IP addresses starting from 192.168.1.33.
Page 95 Table 41 Network > LAN > IP LABEL DESCRIPTION IP Address Type the IP address of your NBG-418N in dotted decimal notation 192.168.1.1 (factory default). IP Subnet Mask The subnet mask specifies the network number portion of an IP address. Your NBG- 418N will automatically calculate the subnet mask based on the IP address that you assign.
Page 96 Chapter 8 LAN NBG-418N User’s Guide...
Page 97: Dhcp Server
DHCP (Dynamic Host Configuration Protocol, RFC 2131 and RFC 2132) allows individual clients to obtain TCP/IP configuration at start-up from a server. You can configure the NBG-418N’s LAN as a DHCP server or disable it. When configured as a server, the NBG-418N provides the TCP/IP configuration for the clients.
Page 98: Advanced Screen
Leave the Enable DHCP Server check box selected unless your ISP instructs you to do otherwise. Clear it to disable the NBG-418N acting as a DHCP server. When configured as a server, the NBG-418N provides TCP/IP configuration for the clients. If not, DHCP service is disabled and you must have another DHCP server on your LAN, or else the computers must be manually configured.
Page 99 (read-only). The NBG-418N tells the DHCP clients on the LAN that the NBG-418N itself is the DNS server. When a computer on the LAN sends a DNS query to the NBG-418N, the NBG-418N forwards the query to the NBG-418N's system DNS server (configured in the WAN >...
Page 100: Client List Screen
Reserve Select this check box in the DHCP Setup section to have the NBG-418N always assign the IP address(es) to the MAC address(es) (and host name(s)). After you click Apply, the MAC address and IP address also display in the Advanced screen (where you can edit them).
Page 101: Network Address Translation
It replaces the original IP source address in each packet and then forwards it to the Internet. The NBG-418N keeps track of the original addresses and port numbers so incoming reply packets can have their original values restored. The following figure illustrates this.
Page 102: What You Can Do
The following terms and concepts may help as you read through this chapter. Inside/Outside This denotes where a host is located relative to the NBG-418N, for example, the computers of your subscribers are the inside hosts, while the web servers on the Internet are the outside hosts.
Page 103: General Nat Screen
IP source address in each packet and then forwards it to the Internet. The NBG-418N keeps track of the original addresses and port numbers so incoming reply packets can have their original values restored. The following figure illustrates this.
Page 104: Nat Application Screen
Application screen. If you do not assign a Default Server IP address, the NBG-418N discards all packets received for ports that are not specified in the Application screen or remote management.
Page 105 10-20. To specify two or more non-consecutive port numbers, separate them by a comma without spaces, such as 123,567. Protocol Select the transport layer protocol supported by this server. Choices are TCP, UDP, or TCP&UDP. NBG-418N User’s Guide...
Page 106: Technical Reference
Application Rule. Click the Remove icon to delete a rule. 10.5 Technical Reference The following section contains additional technical information about the NBG-418N features described in this chapter. 10.5.1 NAT Port Forwarding: Services and Port Numbers A port forwarding set is a list of inside (behind NAT on the LAN) servers, for example, web or FTP, that you can make accessible to the outside world even though NAT makes your whole inside network appear as a single machine to the outside world.
Page 107: Nat Port Forwarding Example
(C in the example). You assign the LAN IP addresses and the ISP assigns the WAN IP address. The NAT network appears as a single host on the Internet. Figure 76 Multiple Servers Behind NAT Example NBG-418N User’s Guide...
Page 108 Chapter 10 Network Address Translation NBG-418N User’s Guide...
Page 109: Dynamic Dns
IP address. Users can always use the same domain name instead of a different dynamic IP address that changes each time to connect to the NBG-418N or a server in your network. Note: The NBG-418N must have a public global IP address and you should have your registered DDNS account information on hand.
Page 110 Apply Click Apply to save your changes back to the NBG-418N. Reset Click Reset to begin configuring this screen afresh.
Page 111: Firewall
Firewall 12.1 Overview Use these screens to enable and configure the firewall that protects your NBG-418N and your LAN from unwanted or malicious traffic. Enable the firewall to protect your LAN computers from attacks by hackers on the Internet and control access between the LAN and WAN.
Page 112: What You Need To Know
This requires special equipment on both ends of the connection. The NBG-418N is not one of the endpoints but it does allow traffic from those endpoints to pass through. The NBG-418N allows the following types of VPN traffic to pass through: •...
Page 113: Services Screen
Table 49 Security > Firewall > General LABEL DESCRIPTION Enable Firewall Select this check box to activate the firewall. The NBG-418N performs access control and protects against Denial of Service (DoS) attacks when the firewall is activated. Apply Click Apply to save the settings.
Page 114 VPN Passthrough Select the checkbox to enable the advanced pass through features: • PPTP Passthrough: Select this option to allow the NBG-418N to pass through VPN traffic using PPTP. • L2TP Passthrough: Select this option to enable computers on your LAN to make L2TP VPN connections to servers on the Internet.
Page 115: Remote Management
This chapter provides information on the Remote Management screens. Remote management allows you to determine which services/protocols can access which NBG- 418N interface (if any) from which computers. You may manage your NBG-418N from a remote location via: • LAN only •...
Page 116: Remote Management Limitations
There is a default system management idle timeout of five minutes (three hundred seconds). The NBG-418N automatically logs you out if the management session remains idle for longer than this timeout period. The management session does not time out when a statistics screen is polling. You can change the timeout period in the System screen.
Page 117 A secured client is a “trusted” computer that is allowed to communicate with the Address NBG-418N using this service. Select All to allow any computer to access the NBG-418N using this service. Choose Selected to just allow the computer with the IP address that you specify to access the NBG-418N using this service.
Page 118 Chapter 13 Remote Management NBG-418N User’s Guide...
Page 119: Universal Plug-And-Play (Upnp)
When a UPnP device joins a network, it announces its presence with a multicast message. For security reasons, the NBG-418N allows multicast messages on the LAN only. NBG-418N User’s Guide...
Page 120: Configuring Upnp
This section shows you how to use the UPnP feature in Windows XP. You must already have UPnP installed in Windows XP and UPnP activated on the NBG-418N. Make sure the computer is connected to a LAN port of the NBG-418N. Turn on your computer and the NBG-418N.
Page 121 In the Internet Connection Properties window, click Settings to see the port mappings there were automatically created. Figure 84 Internet Connection Properties You may edit or delete the port mappings or click Add to manually add port mappings. Figure 85 Internet Connection Properties: Advanced Settings NBG-418N User’s Guide...
Page 122: Web Configurator Easy Access
14.3.2 Web Configurator Easy Access With UPnP, you can access the web-based configurator on the NBG-418N without finding out the IP address of the NBG-418N first. This comes helpful if you do not know the IP address of the NBG- 418N.
Page 123 Figure 89 Network Connections An icon with the description for each UPnP-enabled device displays under Local Network. Right-click on the icon for your NBG-418N and select Invoke. The Web Configurator login screen displays. Figure 90 Network Connections: My Network Places...
Page 124 Chapter 14 Universal Plug-and-Play (UPnP) NBG-418N User’s Guide...
Page 125: System
See the chapter about wizard setup for more information on the next few screens. 15.2 What You Can Do • Use the General screen to enter a name to identify the NBG-418N in the network and set the password (Section 15.3 on page 125).
Page 126: Time Setting Screen
System Setup System Name System Name is a unique name to identify the NBG-418N in an Ethernet network. It is recommended you enter your computer’s “Computer name” in this field (see the chapter about wizard setup for how to find your computer’s name).
Page 127 Time Zone and Daylight Saving at the same time, the new time and date you entered has priority and the Time Zone and Daylight Saving settings do not affect Copy Your Click this to copy the time settings of your computer into the NBG-418N’s time and date Computer’s Time setup.
Page 128 When you set Time and Date Setup to Manual, enter the new date in this field and then click Apply. Get from Time Select this radio button to have the NBG-418N get the time and date from the time Server server you specified below.
Page 129: Logs
This chapter contains information about configuring general log settings and viewing the NBG- 418N’s logs. The Web Configurator allows you to look at all of the NBG-418N’s logs in one location. 16.2 What You Need to Know An alert is a type of log that warrants more serious attention. They include system errors, attacks (access control) and attempted access to blocked web sites or web sites with restricted web features such as cookies, active X and so on.
Page 130 This is the index number of the log entry. Time This field displays the time the log was recorded. See the chapter on system maintenance and information to configure the NBG-418N’s time and date. Message This field states the reason for the log.
Page 131: Tools
(usually) uses the system model name with a “*.bin” extension, e.g., “NBG-418N.bin”. The upload process uses HTTP (Hypertext Transfer Protocol) and may take up to two minutes. After a successful upload, the system will reboot.
Page 132 After you see the Firmware Upload In Process screen, wait for several minutes before logging into the NBG-418N again. Figure 95 Upload Warning The NBG-418N automatically restarts in this time causing a temporary network disconnect. In some operating systems, you may see the following icon on your desktop. Figure 96 Network Temporarily Disconnected After two minutes, log in again and check your new firmware version in the Status screen.
Page 133: Configuration Screen
Figure 98 Maintenance > Tools > Configuration 17.4.1 Backup Configuration Backup configuration allows you to back up (save) the NBG-418N’s current configuration to a file on your computer. Once your NBG-418N is configured and functioning properly, it is highly recommended that you back up your configuration file before making configuration changes. The backup configuration file will be useful in case you need to return to your previous settings.
Page 134: Back To Factory Defaults
Figure 100 Temporarily Disconnected If you uploaded the default configuration file you may need to change the IP address of your computer to be in the same subnet as that of the default NBG-418N IP address (192.168.1.1 in router mode). See Appendix C on page 167 for details on how to set up your computer’s IP address.
Page 135 Chapter 17 Tools Click Maintenance > Tools > Restart. Click Restart to have the NBG-418N reboot. This does not affect the NBG-418N's configuration. Figure 102 Maintenance > Tools > Restart NBG-418N User’s Guide...
Page 136 Chapter 17 Tools NBG-418N User’s Guide...
Page 137: Sys Op Mode
System Operation Mode Router Use this mode if you want to use routing functions such as LAN DHCP, NAT, firewall and so on on the NBG-418N (N). The NBG-418N has separate LAN and WAN network IP addresses. Access Point Use this mode if you already have a Router (R) in your network and you want to bridge all wired and wireless network connections.
Page 138 Use this mode if there is an existing wireless router or access point (AP) in the network to which you want to connect your NBG-418N wirelessly. You should know the SSID and wireless security details of the wireless router or access point to which you want to connect.
Page 139: Language
19.1 Language Screen Use this screen to change the language for the Web Configurator display. Click the language you prefer. The Web Configurator language changes after a while without restarting the NBG-418N. Figure 106 Language Figure 107 Language Change Example...
Page 140 Chapter 19 Language NBG-418N User’s Guide...
Page 141: Troubleshooting
Make sure you are using the power adaptor or cord included with the NBG-418N. Make sure the power adaptor or cord is connected to the NBG-418N and plugged in to an appropriate power source. Make sure the power source is turned on.
Page 142: Nbg-418N Access And Login
The default IP address in router mode is 192.168.1.1 and in non-router mode is 192.168.1.2. If 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 >...
Page 143: Internet Access
Appendix B on page 157. Make sure your computer is in the same subnet as the NBG-418N. (If you know that there are routers between your computer and the NBG-418N, skip this step.) • If there is a DHCP server on your network, make sure your computer is using a dynamic IP address.
Page 144: Resetting The Nbg-418N To Its Factory Defaults
Internet, especially peer-to-peer applications. Check the signal strength. If the signal strength is low, try moving the NBG-418N closer to the AP if possible, and look around to see if there are any devices that might be interfering with the wireless network (for example, microwaves, other wireless networks, and so on).
Page 145: Wireless Problems
Check that both the NBG-418N and your wireless station are using the same wireless and wireless security settings. Make sure traffic between the WLAN and the LAN is not blocked by the firewall on the NBG-418N. Make sure you allow the NBG-418N to be remotely accessed through the WLAN interface. Check your remote management settings.
Page 146 When you change from router mode to a non-router mode, you must manually give your computer an IP address in the range between 192.168.1.3 and 192.168.1.254 as non-router mode has no LAN DHCP server. Refer to Appendix C on page 167 for instructions on how to change your computer’s IP address. NBG-418N User’s Guide...
Page 147: Appendix A Ip Addresses And Subnetting
Therefore, each octet has a possible range of 00000000 to 11111111 in binary, or 0 to 255 in decimal. The following figure shows an example IP address in which the first three octets (192.168.1) are the network number, and the fourth octet (16) is the host ID. NBG-418N User’s Guide...
Page 148 Subnet masks can be referred to by the size of the network number part (the bits with a “1” value). For example, an “8-bit mask” means that the first 8 bits of the mask are ones and the remaining 24 bits are zeroes. NBG-418N User’s Guide...
Page 149 For example, 192.1.1.0 /25 is equivalent to saying 192.1.1.0 with subnet mask 255.255.255.128. The following table shows some possible subnet masks using both notations. Table 62 Alternative Subnet Mask Notation ALTERNATIVE LAST OCTET LAST OCTET SUBNET MASK NOTATION (BINARY) (DECIMAL) 255.255.255.0 0000 0000 255.255.255.128 1000 0000 255.255.255.192 1100 0000 NBG-418N User’s Guide...
Page 150 The “borrowed” host ID bit can have a value of either 0 or 1, allowing two subnets; 192.168.1.0 /25 and 192.168.1.128 /25. The following figure shows the company network after subnetting. There are now two sub- networks, A and B. NBG-418N User’s Guide...
Page 151 Table 63 Subnet 1 LAST OCTET BIT IP/SUBNET MASK NETWORK NUMBER VALUE IP Address (Decimal) 192.168.1. IP Address (Binary) 11000000.10101000.00000001. 00000000 Subnet Mask (Binary) 11111111.11111111.11111111. 11000000 Subnet Address: Lowest Host ID: 192.168.1.1 192.168.1.0 Broadcast Address: Highest Host ID: 192.168.1.62 192.168.1.63 NBG-418N User’s Guide...
Page 152 Similarly, use a 27-bit mask to create eight subnets (000, 001, 010, 011, 100, 101, 110 and 111). The following table shows IP address last octet values for each subnet. Table 67 Eight Subnets SUBNET LAST BROADCAST SUBNET FIRST ADDRESS ADDRESS ADDRESS ADDRESS NBG-418N User’s Guide...
Page 153 16382 255.255.224.0 (/19) 8190 255.255.240.0 (/20) 4094 255.255.248.0 (/21) 2046 255.255.252.0 (/22) 1022 255.255.254.0 (/23) 255.255.255.0 (/24) 255.255.255.128 (/25) 255.255.255.192 (/26) 1024 255.255.255.224 (/27) 2048 255.255.255.240 (/28) 4096 255.255.255.248 (/29) 8192 255.255.255.252 (/30) 16384 255.255.255.254 (/31) 32768 NBG-418N User’s Guide...
Page 154 Network Address Translation (NAT) on the NBG-418N. Once you have decided on the network number, pick an IP address for your NBG-418N that is easy to remember (for instance, 192.168.1.1) but make sure that no other device on your network is using that IP address.
Page 155 More than one device can not use the same IP address. In the following example, the computer and the router’s LAN port both use 192.168.1.1 as the IP address. The computer cannot access the Internet. This problem can be solved by assigning a different IP address to the computer or the router’s LAN port. NBG-418N User’s Guide...
Page 156 Appendix A IP Addresses and Subnetting Figure 113 Conflicting Computer and Router IP Addresses Example NBG-418N User’s Guide...
Page 157: Appendix B Pop-Up Windows, Javascripts And Java Permissions
You can also check if pop-up blocking is disabled in the Pop-up Blocker section in the Privacy tab. In Internet Explorer, select Tools, Internet Options, Privacy. Clear the Block pop-ups check box in the Pop-up Blocker section of the screen. This disables any web pop-up blockers you may have enabled. NBG-418N User’s Guide...
Page 158 Enable Pop-up Blockers with Exceptions Alternatively, if you only want to allow pop-up windows from your device, see the following steps. In Internet Explorer, select Tools, Internet Options and then the Privacy tab. Select Settings…to open the Pop-up Blocker Settings screen. NBG-418N User’s Guide...
Page 159 Type the IP address of your device (the web page that you do not want to have blocked) with the prefix “http://”. For example, http://192.168.167.1. Click Add to move the IP address to the list of Allowed sites. Figure 117 Pop-up Blocker Settings NBG-418N User’s Guide...
Page 160 Click the Custom Level... button. Scroll down to Scripting. Under Active scripting make sure that Enable is selected (the default). Under Scripting of Java applets make sure that Enable is selected (the default). Click OK to close the window. NBG-418N User’s Guide...
Page 161 From Internet Explorer, click Tools, Internet Options and then the Security tab. Click the Custom Level... button. Scroll down to Microsoft VM. Under Java permissions make sure that a safety level is selected. Click OK to close the window. NBG-418N User’s Guide...
Page 162 JAVA (Sun) From Internet Explorer, click Tools, Internet Options and then the Advanced tab. Make sure that Use Java 2 for <applet> under Java (Sun) is selected. Click OK to close the window. Figure 121 Java (Sun) NBG-418N User’s Guide...
Page 163 You can enable Java, Javascripts and pop-ups in one screen. Click Tools, then click Options in the screen that appears. Figure 122 Mozilla Firefox: TOOLS > Options Click Content to show the screen below. Select the check boxes as shown in the following screen. Figure 123 Mozilla Firefox Content Security NBG-418N User’s Guide...
Page 164 Open all pop-ups. Figure 124 Opera: Allowing Pop-Ups Enabling Java From Opera, click Tools, then Preferences. In the Advanced tab, select Content from the left- side menu. Select the check boxes as shown in the following screen. NBG-418N User’s Guide...
Page 165 Appendix B Pop-up Windows, JavaScripts and Java Permissions Figure 125 Opera: Enabling Java To customize JavaScript behavior in the Opera browser, click JavaScript Options. Figure 126 Opera: JavaScript Options Select the items you want Opera’s JavaScript to apply. NBG-418N User’s Guide...
Page 166 Appendix B Pop-up Windows, JavaScripts and Java Permissions NBG-418N User’s Guide...
Page 167: Appendix C Setting Up Your Computer's Ip Address
PP EN D I X Setting Up Your Computer’s IP Address Note: Your specific NBG-418N may not support all of the operating systems described in this appendix. See the product specifications for more information about which operating systems are supported.
Page 168 Appendix C Setting Up Your Computer’s IP Address In the Control Panel, click the Network Connections icon. Right-click Local Area Connection and then select Properties. On the General tab, select Internet Protocol (TCP/IP) and then click Properties. NBG-418N User’s Guide...
Page 169 Appendix C Setting Up Your Computer’s IP Address The Internet Protocol TCP/IP Properties window opens. NBG-418N User’s Guide...
Page 170 In the Command Prompt window, type "ipconfig" and then press [ENTER]. You can also go to Start > Control Panel > Network Connections, right-click a network connection, click Status and then click the Support tab to view your IP address and connection information. NBG-418N User’s Guide...
Page 171 Appendix C Setting Up Your Computer’s IP Address Windows Vista This section shows screens from Windows Vista Professional. Click Start > Control Panel. In the Control Panel, click the Network and Internet icon. Click the Network and Sharing Center icon. Click Manage network connections. NBG-418N User’s Guide...
Page 172 Right-click Local Area Connection and then select Properties. Note: During this procedure, click Continue whenever Windows displays a screen saying that it needs your permission to continue. Select Internet Protocol Version 4 (TCP/IPv4) and then select Properties. NBG-418N User’s Guide...
Page 173 Appendix C Setting Up Your Computer’s IP Address The Internet Protocol Version 4 (TCP/IPv4) Properties window opens. NBG-418N User’s Guide...
Page 174 In the Command Prompt window, type "ipconfig" and then press [ENTER]. You can also go to Start > Control Panel > Network Connections, right-click a network connection, click Status and then click the Support tab to view your IP address and connection information. NBG-418N User’s Guide...
Page 175 This section shows screens from Windows 7 Enterprise. Click Start > Control Panel. In the Control Panel, click View network status and tasks under the Network and Internet category. Click Change adapter settings. Double click Local Area Connection and then select Properties. NBG-418N User’s Guide...
Page 176 Appendix C Setting Up Your Computer’s IP Address Note: During this procedure, click Continue whenever Windows displays a screen saying that it needs your permission to continue. Select Internet Protocol Version 4 (TCP/IPv4) and then select Properties. NBG-418N User’s Guide...
Page 177 Appendix C Setting Up Your Computer’s IP Address The Internet Protocol Version 4 (TCP/IPv4) Properties window opens. NBG-418N User’s Guide...
Page 178 Click OK to close the Local Area Connection Properties window. Verifying Settings Click Start > All Programs > Accessories > Command Prompt. In the Command Prompt window, type "ipconfig" and then press [ENTER]. The IP settings are displayed as follows. NBG-418N User’s Guide...
Page 179 Mac OS X: 10.3 and 10.4 The screens in this section are from Mac OS X 10.4 but can also apply to 10.3. Click Apple > System Preferences. In the System Preferences window, click the Network icon. NBG-418N User’s Guide...
Page 180 Appendix C Setting Up Your Computer’s IP Address When the Network preferences pane opens, select Built-in Ethernet from the network connection type list, and then click Configure. For dynamically assigned settings, select Using DHCP from the Configure IPv4 list in the TCP/IP tab. NBG-418N User’s Guide...
Page 181 • In the Router field, type the IP address of your device. Click Apply Now and close the window. Verifying Settings Check your TCP/IP properties by clicking Applications > Utilities > Network Utilities, and then selecting the appropriate Network Interface from the Info tab. NBG-418N User’s Guide...
Page 182 Figure 127 Mac OS X 10.4: Network Utility Mac OS X: 10.5 and 10.6 The screens in this section are from Mac OS X 10.5 but can also apply to 10.6. Click Apple > System Preferences. In System Preferences, click the Network icon. NBG-418N User’s Guide...
Page 183 When the Network preferences pane opens, select Ethernet from the list of available connection types. From the Configure list, select Using DHCP for dynamically assigned settings. For statically assigned settings, do the following: • From the Configure list, select Manually. NBG-418N User’s Guide...
Page 184 • In the IP Address field, enter your IP address. • In the Subnet Mask field, enter your subnet mask. • In the Router field, enter the IP address of your NBG-418N. Click Apply and close the window. Verifying Settings Check your TCP/IP properties by clicking Applications >...
Page 185 When the Network Settings window opens, click Unlock to open the Authenticate window. (By default, the Unlock button is greyed out until clicked.) You cannot make changes to your configuration unless you first enter your admin password. NBG-418N User’s Guide...
Page 186 Appendix C Setting Up Your Computer’s IP Address In the Authenticate window, enter your admin account name and password then click the Authenticate button. In the Network Settings window, select the connection that you want to configure, then click Properties. NBG-418N User’s Guide...
Page 187 Click OK to save the changes and close the Properties dialog box and return to the Network Settings screen. If you know your DNS server IP address(es), click the DNS tab in the Network Settings window and then enter the DNS server information in the fields provided. NBG-418N User’s Guide...
Page 188 Verifying Settings Check your TCP/IP properties by clicking System > Administration > Network Tools, and then selecting the appropriate Network device from the Devices tab. The Interface Statistics column shows data if your connection is working properly. NBG-418N User’s Guide...
Page 189 The following screens use the default openSUSE 10.3 installation. Note: Make sure you are logged in as the root administrator. Follow the steps below to configure your computer IP address in the KDE: Click K Menu > Computer > Administrator Settings (YaST). NBG-418N User’s Guide...
Page 190 Appendix C Setting Up Your Computer’s IP Address When the Run as Root - KDE su dialog opens, enter the admin password and click OK. When the YaST Control Center window opens, select Network Devices and then click the Network Card icon. NBG-418N User’s Guide...
Page 191 Appendix C Setting Up Your Computer’s IP Address When the Network Settings window opens, click the Overview tab, select the appropriate connection Name from the list, and then click the Configure button. When the Network Card Setup window opens, click the Address tab NBG-418N User’s Guide...
Page 192 Click Next to save the changes and close the Network Card Setup window. If you know your DNS server IP address(es), click the Hostname/DNS tab in Network Settings and then enter the DNS server information in the fields provided. NBG-418N User’s Guide...
Page 193 Click the KNetwork Manager icon on the Task bar to check your TCP/IP properties. From the Options sub-menu, select Show Connection Information. Figure 131 openSUSE 10.3: KNetwork Manager When the Connection Status - KNetwork Manager window opens, click the Statistics tab to see if your connection is working properly. NBG-418N User’s Guide...
Page 194 Appendix C Setting Up Your Computer’s IP Address Figure 132 openSUSE: Connection Status - KNetwork Manager NBG-418N User’s Guide...
Page 195: Appendix D Wireless Lans
Intra-BSS traffic is traffic between wireless clients in the BSS. When Intra-BSS is enabled, wireless client A and B can access the wired network and communicate with each other. When Intra-BSS is disabled, wireless client A and B can still access the wired network but cannot communicate with each other. NBG-418N User’s Guide...
Page 196 An ESSID (ESS IDentification) uniquely identifies each ESS. All access points and their associated wireless clients within the same ESS must have the same ESSID in order to communicate. NBG-418N User’s Guide...
Page 197 (AP) or wireless gateway, but out-of-range of each other, so they cannot "hear" each other, that is they do not know if the channel is currently being used. Therefore, they are considered hidden from each other. NBG-418N User’s Guide...
Page 198 If the Fragmentation Threshold value is smaller than the RTS/CTS value (see previously) you set then the RTS (Request To Send)/CTS (Clear to Send) handshake will never occur as data frames will be fragmented before they reach RTS/CTS size. NBG-418N User’s Guide...
Page 199 Wireless security is vital to your network to protect wireless communication between wireless clients, access points and the wired network. Wireless security methods available on the NBG-418N are data encryption, wireless client authentication, restricting access by device MAC address and hiding the NBG-418N identity.
Page 200 Wi-Fi Protected Access (WPA) WPA2 Most Secure Note: You must enable the same wireless security settings on the NBG-418N and on all wireless clients that you want to associate with it. IEEE 802.1x In June 2001, the IEEE 802.1x standard was designed to extend the features of IEEE 802.11 to support extended authentication as well as providing additional accounting and control features.
Page 201 For EAP-TLS authentication type, you must first have a wired connection to the network and obtain the certificate(s) from a certificate authority (CA). A certificate (also called digital IDs) can be used to authenticate users and a CA issues certificates and guarantees the identity of each certificate owner. NBG-418N User’s Guide...
Page 202 The AP maps a unique key that is generated with the RADIUS server. This key expires when the wireless connection times out, disconnects or reauthentication times out. A new WEP key is generated each time reauthentication is performed. NBG-418N User’s Guide...
Page 203 Cipher block chaining Message authentication code Protocol (CCMP). TKIP uses 128-bit keys that are dynamically generated and distributed by the authentication server. AES (Advanced Encryption Standard) is a block cipher that uses a 256-bit mathematical algorithm NBG-418N User’s Guide...
Page 204 WPA. At the time of writing, the most widely available supplicant is the WPA patch for Windows XP, Funk Software's Odyssey client. The Windows XP patch is a free download that adds WPA capability to Windows XP's built-in "Zero Configuration" wireless client. However, you must run Windows XP to use it. NBG-418N User’s Guide...
Page 205 The AP checks each wireless client's password and allows it to join the network only if the password matches. 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. NBG-418N User’s Guide...
Page 206: Security Parameters Summary
An antenna couples RF signals onto air. A transmitter 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 from the air. NBG-418N User’s Guide...
Page 207 For omni-directional antennas mounted on a table, desk, and so on, point the antenna up. For omni-directional antennas mounted on a wall or ceiling, point the antenna down. For a single AP application, place omni-directional antennas as close to the center of the coverage area as possible. NBG-418N User’s Guide...
Page 208 Appendix D Wireless LANs For directional antennas, point the antenna in the direction of the desired coverage area. NBG-418N User’s Guide...
Page 209: Appendix E Common Services
File Transfer Program, a program to enable fast transfer of files, including large files that may not be possible by e-mail. H.323 1720 NetMeeting uses this protocol. HTTP Hyper Text Transfer Protocol - a client/server protocol for the world wide web. NBG-418N User’s Guide...
Page 210 Simple Mail Transfer Protocol is the message- exchange standard for the Internet. SMTP enables you to move messages from one e-mail server to another. SNMP TCP/UDP Simple Network Management Program. SNMP-TRAPS TCP/UDP Traps for use with the SNMP (RFC:1215). NBG-418N User’s Guide...
Page 211 TFTP Trivial File Transfer Protocol is an Internet file transfer protocol similar to FTP, but uses the UDP (User Datagram Protocol) rather than TCP (Transmission Control Protocol). VDOLIVE 7000 Another videoconferencing solution. NBG-418N User’s Guide...
Page 212 Appendix E Common Services NBG-418N User’s Guide...
Page 213: Appendix F Legal Information
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.
Page 214: Zyxel Limited Warranty
Hierbij verklaart ZyXEL dat het toestel uitrusting in overeenstemming is met de essentiële eisen en de andere relevante bepalingen van richtlijn 1999/5/EC. [Maltese] Hawnhekk, ZyXEL, jiddikjara li dan tagħmir jikkonforma mal-ħtiġijiet essenzjali u ma provvedimenti oħrajn relevanti li hemm fid-Dirrettiva 1999/5/EC. NBG-418N User’s Guide...
Page 215 For 2.4 GHz, the output power is restricted to 10 mW EIRP when the product is used outdoors in the band 2454 - 2483.5 MHz. There are no restrictions when used indoors or in other parts of the 2.4 GHz band. Check http://www.arcep.fr/ for more details. NBG-418N User’s Guide...
Page 216: Safety Warnings
Place connecting cables carefully so that no one will step on them or stumble over them. • Always disconnect all cables from this device before servicing or disassembling. • Use ONLY an appropriate power adaptor or cord for your device. NBG-418N User’s Guide...
Page 217 Your product is marked with this symbol, which is known as the WEEE mark. WEEE stands for Waste Electronics and Electrical Equipment. It means that used electrical and electronic products should not be mixed with general waste. Used electrical and electronic equipment should be treated separately. NBG-418N User’s Guide...
Page 218 Appendix F Legal Information NBG-418N User’s Guide...
Page 219: Index
Domain Name System. See DNS. viewing duplex setting Channel 40, 46, 50, 54 39, 46, 50, 53 Dynamic DNS channel 69, 197 interference Dynamic Host Configuration Protocol client bridge dynamic WEP key exchange Configuration DynDNS backup DynDNS see also DDNS NBG-418N User’s Guide...
Page 220 MAC address 69, 86 cloning 31, 86 MAC address filter MAC address filtering hidden node MAC filter managing the device good habits Media access control Memory usage 39, 46, 50, 54 IANA Message Integrity Check (MIC) IBSS NBG-418N User’s Guide...
Page 221 Point-to-Point Protocol over Ethernet 26, 88 RTS (Request To Send) Point-to-Point Tunneling Protocol threshold 27, 90 197, 198 Pool Size RTS/CTS Threshold 68, 76, 77 Port forwarding 104, 106 default server 104, 106 example local server port numbers safety warnings NBG-418N User’s Guide...
Page 222 MAC address filter overview security SSID Wireless security overview Universal Plug and Play type application wireless security 145, 199 universal repeater Wireless tutorial UPnP security issues Wizard setup complete Internet connection system information wireless LAN WLAN interference NBG-418N User’s Guide...
Page 223 WPA-PSK wireless client supplicant with RADIUS application example WPA compatible WPA2 user authentication vs WPA2-PSK wireless client supplicant with RADIUS application example WPA2-Pre-Shared Key WPA2-PSK 203, 204 application example WPA-PSK 203, 204 application example WPS button NBG-418N User’s Guide...
Page 224 Index NBG-418N User’s Guide...

ZyXEL Communications NBG-418N User Manual

Contents Overview

Table of Contents

User's Guide

PART I User's Guide

Chapter 1 Introduction

Chapter 2 The Web Configurator

Chapter 3 Connection Wizard

Chapter 4 Modes

Chapter 5 Tutorials

Technical Reference

Part II: Technical Reference

Chapter 6 Wireless LAN

Chapter 7 WAN

Chapter 8 LAN

Chapter 9 DHCP Server

Chapter 10 Network Address Translation

Chapter 11 Dynamic DNS

Chapter 12 Firewall

Chapter 13 Remote Management

Chapter 14 Universal Plug-And-Play (Upnp)

Chapter 15 System

Chapter 16 Logs

Chapter 17 Tools

Chapter 18 Sys OP Mode

Chapter 19 Language

Chapter 20 Troubleshooting

Appendix A IP Addresses and Subnetting

Appendix B Pop-Up Windows, Javascripts and Java Permissions

Appendix C Setting up Your Computer's IP Address

Appendix D Wireless Lans

Appendix E Common Services

Appendix F Legal Information

Index

Quick Links

Related Manuals for ZyXEL Communications NBG-418N

Summary of Contents for ZyXEL Communications NBG-418N

Table of Contents