NETGEAR NMS100 manual Auto Uplink, Cat, Denial of Service attack

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Reference Manual for the ProSafe Network Management System NMS1000

ADSL requires a special ADSL modem. ADSL is growing in popularity as more areas around the world gain access.

AES

Advanced Encryption Standard, a symmetric 128-bit block data encryption technique.

It is an iterated block cipher with a variable block length and a variable key length. The block length and the key length can be independently specified to 128, 192 or 256 bits.The U.S government adopted the algorithm as its encryption technique in October 2000, replacing the DES encryption it used. AES works at multiple network layers simultaneously.

ARP

Address Resolution Protocol, a TCP/IP protocol used to convert an IP address into a physical address (called a DLC address), such as an Ethernet address.

A host wishing to obtain a physical address broadcasts an ARP request onto the TCP/IP network. The host on the network that has the IP address in the request then replies with its physical hardware address. There is also Reverse ARP (RARP) which can be used by a host to discover its IP address. In this case, the host broadcasts its physical address and a RARP server replies with the host's IP address.

Auto Uplink

Auto UplinkTM technology (also called MDI/MDIX) eliminates the need to worry about crossover vs. straight-through Ethernet cables. Auto UplinkTM will accommodate either type of cable to make the right connection.

Cat 5

Category 5 unshielded twisted pair (UTP) cabling. An Ethernet network operating at 10 Mbits/second (10BASE-T) will often tolerate low quality cables, but at 100 Mbits/second (10BASE-Tx) the cable must be rated as Category 5, or Cat 5 or Cat V, by the Electronic Industry Association (EIA).

This rating will be printed on the cable jacket. Cat 5 cable contains eight conductors, arranged in four twisted pairs, and terminated with an RJ45 type connector. In addition, there are restrictions on maximum cable length for both 10 and 100 Mbits/second networks.

Denial of Service attack

DoS. A hacker attack designed to prevent your computer or network from operating or communicating.

DHCP

An Ethernet protocol specifying how a centralized DHCP server can assign network configuration information to multiple DHCP clients. The assigned information includes IP addresses, DNS addresses, and gateway (router) addresses.

DMZ

A Demilitarized Zone is used by a company that wants to host its own Internet services without sacrificing unauthorized access to its private network.

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Glossary

September 2004 202-10036-01

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Contents September 2004 NETGEAR, IncStatement of Conditions TrademarksCustomer Support World Wide Web Contents Chapter Data and Statistics Appendix a Contents Typographical Conventions Audience, Scope, Conventions, and FormatsManual Scope Other ProSafe NMS Features OverviewSystem Requirements Device Access ModesProSafe Network Management System Recommended system requirementsPackage Contents Introduction Introduction Chapter Installation and Startup Installing the ProSafe NMS Server and Local ConsoleInstalling the Air Messenger Pro Paging Software Starting the ProSafe NMS Server and Local ConsoleStarting a Local Console Session Disabling Automatic Console LoginStopping and Starting the Server Event Log Tool Console ElementsMain button bar Edit button bar Selection Tool Element FunctionConsole Button Commands Zoom toSelection Tool tabs Selection ToolEvent Log Tool Selection Tab DescriptionView Window Area Installation and Startup Working with the Map Database Map Selection TreeZoom Using Map View WindowsView All Zoom Out RectangleMoving Map Objects Moving Objects at the Root LevelMoving Objects Inside Subnet Levels Automatically arranged and manually arranged submap levelsMoving Objects from One Subnet to Another Changing Object Properties AttributesObject Properties Access tab Access ParametersAttribute Name Description Type-Dependent Attributes Object Properties Attribute tab Object Attribute Name Description Type aObject Types Adding Map ObjectsType Description MIB Selection Tree Viewing Device MIB DataManage Menus Table Display Elements Custom MenusGraph Display Elements Graph StylesSaving Long-term Statistics Creating a New ReportViewing Trend Data in a Graph Window Limiting Saved Instances Threshold Alarms Setting Threshold AlarmsAlarm Type Description Setting Status Variable Polling Configuring Automatic AlarmsSetting Manual Threshold Alarms Discovery of Four Built-in Services Polling TCP Application ServicesTCP Service Polling Custom TCP Service Polling Managing Polling for the DeviceEmailing or Paging the Administrator on an Event To modify an existing Custom TCP Service definitionThen, set the Email/Paging global event options Add an Event Filter for the pollDeviceDown event Then, set the Email/Page event actions ProSafe NMS Events Other Event TypesEvent Subtree Trap Name Description Emailing or Paging Multiple Users First, add a grouped set of usersThen, add an Event Filter for the selected devices Duration of Network Discovery Troubleshooting Network DiscoveryNormal Discovery Map Layout Failure Symptoms and Solutions Sample top-level and Subnet Map views for a small networkDiscovery Agent Fails to Connect to the Server Incorrect or Missing Community NamesFirewalls Block Snmp Operations Snmp Device Access Control ListNot Enough Seeds Broadcast Packet Losses Setting Up New FiltersLimiting the Scope of Discovery Stopping Discovery Auto-Layout Event Parameters Event ParametersEvent Description Parameters Set Community name of the target device List of Glossary Terms Auto Uplink Denial of Service attackCat Dynamic Host Configuration Protocol Domain Name DoSIP Address GatewayInternet Protocol MAC address Lightweight Directory Access ProtocolLocal area network MbpsPacket NetBIOSNetwork Address Translation Perfect Forward SecrecyPPP over Ethernet PPPoEPPP over ATM RouterSubnet Mask WEB Proxy Server Wi-Fi Windows Internet Naming ServiceUniversal Plug and Play Wide area networkWireless Network Name Ssid Index Index Index
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