Netcom NB9W manual Wireless Security in Detail, Authentication and Encryption, Network Keys

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Wireless Security in Detail

The following provides a detailed summary of wireless terms and acronyms and more in-depth explanations of the topic. It assumes little prior knowledge of wireless networking and is aimed at providing background for the terminology used in the NB9W Wireless Security screens.

Warning: Wireless Networking is a technically challenging subject!

Authentication and Encryption

The two major aims of wireless network security are:

(1)to prevent unauthorised persons from joining the network and

(2)to prevent interception of network data or ‘eavesdropping’. These aims are accomplished by:

Authentication: establishes the identity of those seeking to join the network

Encryption: ensures that data is protected in such a way that those outside the network cannot access it.

Network Keys

The term ‘network key’ is often used in the context of wireless networking. The Network Key can be a text string, although in some systems network keys are generated from a ‘pass-phrase’ which is entered in one field from which up to four keys are derived in fields underneath the entry field.

In all cases, the Wireless Router/Access Point and the workstations wishing to connect must use the same Network Key which needs to be communicated to clients prior to connection.

‘Re-keying’ refers to the frequency with which network keys are changed; for security purposes, they need to be changed frequently in case they re-occur frequently enough to identify them.

In some wireless systems, network keys are entered by a variety of means including:

ASCII – any letter, number, or punctuation mark but no special characters

Hex – Letters A-F, Numbers 0-9 only

Pass phrase – enter a phrase in the top field of a set of fields, an algorithm then generates a series of keys based on the entered values.

These methods have been standardised in the later implementations of Wireless Security and are easier to use in WPA.

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NB9/NB9W ADSL2+ VoIP Router

 

YML790 Rev8

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Contents User Guide Your ADSL2+ connection Contents Save & Reboot Wireless NB9W only OverviewAdsl Broadband VoIP Voice over Internet ProtocolNB9/NB9W Package Contents Selected terminology used in this manualDo I need a micro filter? Multi-purpose Gateways and In-line SplittersMinimum System Requirements PC RequirementsAdsl Requirement VoIP RequirementsNB9W only Colour Mode FunctionGetting to Know the NB9/NB9W Ethernet Hub / Switch Your Adsl and telephone serviceSettings Back Panel PortsDefault Settings Restore Factory Default SettingModem Access LAN ManagementConnecting the NB9/NB9W RJ-11 Telephone line RJ-45 Ethernet cableConnecting the Cables Establishing an Adsl connection via PPPoE NB9/NB9W ADSL2+ VoIP Router Establishing your Wireless Connection for NB9W only Security WEP 64-bit HEX keySetting up your VoIP account Interface Name Don’t change the ‘Interface name’ setting Computer Hardware Configuration Windows XP PCsWindows 2000 PCs Windows Me PCsWindows Vista Windows 95, 98 PCsMac OSX Digging Deeper Advanced Settings Version of the bootloader BasicBasicHome Field DescriptionBasicADSL Quick Setup Completed you will be returned to the ‘Basic Home’Voice Settings VoiceAbout SIP & VoIP About SIPVoice Menu Field ValueField Means VoIP Status Indicator Means Voice Dial Plan Incoming Voice Dial PlanVoice Dial Plan Outgoing Voice Dial Plan Advance Wireless NB9W only Wireless SetupField Enter SsidWireless Security Quick Setup Quick Security Setup 1 WEP SecurityQuick Security Setup 2 WPA-PSK Network Keys Wireless Security in DetailAuthentication and Encryption Network Authentication WEP and WPA802.1X SharedTkip AESDependent on vendor driver support TKIP+AESWPA2 Wireless Configuration Field Name AboutSmaller packet without using RTS/CTS Messages. The default isBuffered frames at the access point WMM Wi-Fi MultimediaField Name Comment Wireless Mac FilterHow to find your MAC address Available bridges Wireless BridgeWireless Station Info Management Device Settings Backup Management Device Settings UpdateManagement Device Settings Restore Default ManagementManagement Device Settings Update Firmware Management SnmpAccess Control Services Management SntpSave & Reboot Access Control IP AddressesAccess Control Password Advanced Advanced WANField Choosing a WAN ProfileAlternative Connection Types Inc PPPoA Advanced LAN Through your NB9/NB9W Enable Igmp SnoopingTable entry Advanced NAT Explanation Advanced NAT Port Forwarding External Port Start External Port EndLast port in the range here Would select UDPAdvanced NAT Port Triggering Application Outgoing Port Reply PortICQ ICUAdvanced NAT DMZ Advanced Security IP Filtering Advanced Security Parental Control Advanced QoS UDPNB9/NB9W ADSL2+ VoIP Router Advanced Routing Default Gateway Remote router gateway address Advanced Routing Static RouteField Entry Advanced Routing Dynamic Route Advanced DNS DNS ServerAdvanced DNS Dynamic DNS Advanced DSLStatus System Log Status DiagnosticsStatus Status Statistics Status WANStatus Route Status ARPStatus Igmp Proxy Status DhcpStatus Bridging Problems with WAN Appendix a TroubleshootingProblems with LAN Problem with Wireless Windows XP service pack NB9/NB9W ADSL2+ VoIP Router YML790 Rev8 Mac OSX Windows Vista NB9/NB9W ADSL2+ VoIP Router NB9/NB9W ADSL2+ VoIP Router YML790 Rev8 NB9/NB9W ADSL2+ VoIP Router Now the connection is ready Appendix C How to change Wireless Security on your NB9W WEP encryptionWPA encryption Appendix D Glossary DSL FTPGGP GRENIC RIPSdns SnmpTCP TCP/IPTftp TTLAppendix F Registration and Warranty Information Contact InformationCopyright Information Customer InformationGNU General Public License Product WarrantyLimitations of Warranty NB9/NB9W ADSL2+ VoIP Router Purchase by Phone Click on the Buy Now buttonProduct Warranty Contact Information