NetComm NB600W manual What’s MX Mail Exchanger? And why MX?, What is PPPoE PPP Over Ethernet?

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Q: What’s MX (Mail Exchanger)? And why MX?

A:The Internet email system for both machines and network connections are prone to error. With this, a chain of email hubs into the email architecture is built. If the “primary” mail host goes down, instead of queuing up the mails in the unreliable host on the Internet, they get sent to the “secondary” or “backup” mail exchanger for delivery, until the primary mail server becomes functional again. In technical terms, such service is called a Backup Mail Exchanger.

Q: What is PPPoE (PPP Over Ethernet)?

A:PPPoE is known as a dial-up DSL service. It is designed to integrate the broadband services into the current widely deployed, easy-to-use, and low-cost dial-up-access networking infra- structure. Thus, customer can get greater access speed without changing the operation concept.

Q: What is MTU?

A:A maximum transmission unit (MTU) is the largest size packet or frame, specified in octets (eight-bit bytes), that can be sent in a packet- or frame-based network such as the Internet. The Internet’s Transmission Control Protocol uses the MTU to determine the maximum size of each packet in any transmission. Too large an MTU size may mean retransmissions if the packet encounters a router that can’t handle that large a packet. Too small an MTU size means more header overhead and more acknowledgements that have to be sent and handled. Most computer operating systems provide a default MTU value that is suitable for most users. In general, Internet users should follow the advice of their Internet service provider (ISP) about whether to change the default value and what to change it to.

YML775 Rev1

NB600W Super-G Wireless Broadband Gateway User Guide

www.netcomm.com.au

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Contents Page Customer Information Legal & Regulatory InformationImportant rules for safe operation NB600W Super-G Wireless Broadband Gateway User Guide Contents Product Overview IntroductionNetComm NB600W Super-G Wireless Gateway Features and benefitsWhat’s in the package? Connecting your Gateway Connecting the NetComm Super-G Wireless GatewayConnect the Power Cable Connect the Ethernet CablesDevice Factory Default1 NB600W Front Panel 2 NB600W Back Panel Log-in Management / Gateway Address Default ValuesOverview Configuring your ComputersConfiguring Windows 98 and Millennium PCs Page Configuring Windows 2000 PCs Page Configuring Windows XP PCs Page Accessing the Configuration Manager Configuring the Wireless GatewayHttp//192.168.1.1 Internet Port Basic ConfigurationHost Name/Domain Name Dhcp ConfigurationUse Static DNS MAC addressPassword &Confirm Password PPPoE ConfigurationService Name Packet Size MTUField IP Address Static IP ConfigurationGateway Primary DNSPassword & Confirm Password Pptp ConfigurationServer IP Default value is 1492 Bytes. If your ISP requires a Start IP address Local PortNumber of IP address Static Dhcp IP & MAC Address Lease TimeWins Server Hide Ssid Wireless LANRegion ChannelSecurity Mode Enable Wireless Access ListRal Key Integrity Protocol. Tkip utilizes a stronger WPA Pre-Shared Key802.1x Radius Advanced Items Advanced Setup Access Control ListUser Group ApplicationGroup Name Define Group OptionsEvery IP address This IP address IP Address Range Application name Define Application OptionsProtocol Port Range/Port NumberBlock URLs By Keyword Advanced Setup Content filteringBlock URLs With IP Address Block Java AppletsBlock Download File Block CookiesSchedule Trust UserAdvanced Setup Dynamic DNS Update Status Advanced Setup Firewall Email Alarm Options Mail log Return AddressTime Password, Confirm Password Advanced Setup Remote ManagementWeb Management Port Send System Log to this PC Allow Management from PCDestination Network / Host Advanced Setup Static RoutesEnable UPnP Advanced Setup UPnPServer IP address Advanced Setup Virtual ServerPort Number Port RangeManagement Management Access LogNB600W Management Factory ResetManagement Firmware Upgrade Refresh Management Network StatusConnect/Renew Disconnect/ReleaseSession List User ListManagement Save Configuration Management Time Appendix a Technical Specifications Hardware Dimensions & WeightWeb Contents Filtering Wireless SecuritySoftware Networking /Transport layer protocolManagement What is DMZ? What is a dynamic IP address?What is Dynamic DNS? Why Dynamic DNS? What is Wildcard? Appendix B Frequent Asked QuestionsWhat is PPPoE PPP Over Ethernet? What’s MX Mail Exchanger? And why MX?What is MTU? Cannot access the Internet Appendix C TroubleshootingRefresh your IP address MS Windows IP address conflictAppendix D Ddns Update Status Messages RJ-45 Network Ports Appendix E Cable ConnectionsStraight-Through Cabling Straight and crossover cable configurationCross-Over Cabling To RJ-11 adapter RJ11 connector and cableLegal & Regulatory Information Appendix F Registering your NetComm ProductContact Information Customer Information Product Warranty Limitations of Warranty YML775 Rev1