NetComm NB600W Appendix B Frequent Asked Questions, What is a dynamic IP address?, What is DMZ?

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Appendix B: Frequent Asked Questions

Q: What is a “dynamic IP address”?

A:An IP address from your ISP which is assigned via DHCP and is therefore not guaranteed to remain the same. Some cable modem Internet providers provide IP address assignments which rarely change, but the addresses assigned are still considered to be dynamic, not static.

Q: When should I modify the MAC address for global port settings?

A:Some ISPs identify their clients by their MAC address and host names. Entering this in- formation allows authentication. The MAC address required for the global port settings is the adapter address for the device you are now configuring. Most ISPs use automatic registration and do not limit network MAC addresses. But, if they do, you can change your MAC address to meet their registration.

Q: What is DMZ?

A:DMZ (demilitarized zone) is a barrier between the Internet and a company’s Intranet. It is a subnet that contains a firewall and proxy server, which can be in separate servers or in one server. The firewall connects to an external firewall on the Internet side, which may be at the ISP’s location and is often called a “boundary router”. The double firewall architecture adds an extra measure of security for the Intranet.

Q: What is Dynamic DNS?

A:The Dynamic DNS service is an IP Registry which provides a public central database where information such as email addresses, hostnames, Ips etc. can be stored and retrieved. This can be a solution if your DNS server uses an IP associated with dynamic IP. The Dy- namic DNS service acts like an old-style phone operator: other users call the operator and ask to speak to you and the operator, who knows your extension, will make the connection. Every time your computer comes online, it will inform the Dynamic DNS server what the current IP address is. Users who need to connect to your server, through the DNS service, will be sent to the right place. Please visit http://www.dyndns.org for more information.

Q: Why “Dynamic DNS”?

A:With Dynamic DNS support, you can have a static hostname alias for a dynamic IP ad- dress, allowing the host to be more easily accessible from various locations on the Internet. You must register with a Dynamic DNS Client to use this service. Please go to http://www. dyndns.org for more information.

Q: What is Wildcard?

A:A wildcard alias is a method that is used to give your hostname multiple identities. If you were to register yourhost.com, everything (*).yourhost.com would be aliased to yourhost.com. This includes host names such as www.yourhost.com or ftp.yourhost.com . Once Wildcard feature was enabled, your host can be reached by *.yourhost.dyndns.org. First, you need to register a dynamic DNS account with www.dyndns.org. To use this service, you must register with the Dynamic DNS client. The Dynamic DNS client service provider will give you a pass- word or key. Refer to what’s Dynamic DNS? Question above for more information.

NB600W Super-G Wireless Broadband Gateway User Guide

YML775 Rev1

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www.netcomm.com.au

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Contents Page Legal & Regulatory Information Customer InformationImportant rules for safe operation NB600W Super-G Wireless Broadband Gateway User Guide Contents Introduction Product OverviewFeatures and benefits NetComm NB600W Super-G Wireless GatewayWhat’s in the package? Connecting the NetComm Super-G Wireless Gateway Connecting your GatewayConnect the Power Cable Connect the Ethernet CablesFactory Default Device1 NB600W Front Panel 2 NB600W Back Panel Log-in Default Values Management / Gateway AddressConfiguring your Computers OverviewConfiguring Windows 98 and Millennium PCs Page Configuring Windows 2000 PCs Page Configuring Windows XP PCs Page Configuring the Wireless Gateway Accessing the Configuration ManagerHttp//192.168.1.1 Basic Configuration Internet PortDhcp Configuration Host Name/Domain NameUse Static DNS MAC addressPPPoE Configuration Password &Confirm PasswordService Name Packet Size MTUField Static IP Configuration IP AddressGateway Primary DNSPptp Configuration Password & Confirm PasswordServer IP Default value is 1492 Bytes. If your ISP requires a Local Port Start IP addressNumber of IP address Lease Time Static Dhcp IP & MAC AddressWins Server Wireless LAN Hide SsidRegion ChannelEnable Wireless Access List Security ModeWPA Pre-Shared Key Ral Key Integrity Protocol. Tkip utilizes a stronger802.1x Radius Advanced Setup Access Control List Advanced ItemsUser Group ApplicationDefine Group Options Group NameEvery IP address This IP address IP Address Range Define Application Options Application nameProtocol Port Range/Port NumberAdvanced Setup Content filtering Block URLs By KeywordBlock URLs With IP Address Block Java AppletsBlock Cookies Block Download FileSchedule Trust UserAdvanced Setup Dynamic DNS Update Status Advanced Setup Firewall Email Alarm Options Return Address Mail logTime Advanced Setup Remote Management Password, Confirm PasswordWeb Management Port Allow Management from PC Send System Log to this PCAdvanced Setup Static Routes Destination Network / HostAdvanced Setup UPnP Enable UPnPAdvanced Setup Virtual Server Server IP addressPort Range Port NumberManagement Access Log ManagementManagement Factory Reset NB600WManagement Firmware Upgrade Management Network Status RefreshConnect/Renew Disconnect/ReleaseUser List Session ListManagement Save Configuration Management Time Appendix a Technical Specifications Dimensions & Weight HardwareWireless Security Web Contents FilteringSoftware Networking /Transport layer protocolManagement What is a dynamic IP address? What is DMZ?What is Dynamic DNS? Why Dynamic DNS? What is Wildcard? Appendix B Frequent Asked QuestionsWhat’s MX Mail Exchanger? And why MX? What is PPPoE PPP Over Ethernet?What is MTU? Appendix C Troubleshooting Cannot access the InternetRefresh your IP address MS Windows IP address conflictAppendix D Ddns Update Status Messages Appendix E Cable Connections RJ-45 Network PortsStraight and crossover cable configuration Straight-Through CablingCross-Over Cabling RJ11 connector and cable To RJ-11 adapterAppendix F Registering your NetComm Product Legal & Regulatory InformationContact Information Customer Information Product Warranty Limitations of Warranty YML775 Rev1