TRENDnet TW100-BRF114U manual Data Security Screen, Enable DoS Firewall Threshold

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Broadband Router User Guide

Security

This screen allows you to set Firewall and other security-related options.

Figure 53: Security Screen

Data - Security Screen

Firewall

Enable DoS Firewall

Threshold

If enabled, DoS (Denial of Service) attacks will be detected and blocked. The default is enabled. It is strongly recommended that this setting be left enabled.

Note:

A DoS attack does not attempt to steal data or damage your PCs, but overloads your Internet connection so you can not use it - the service is unavailable.

This device uses "Stateful Inspection" technology. This system can detect situations where individual TCP/IP packets are valid, but collectively they become a DoS attack.

This setting affects the number of "half-open" connections allowed.

A "half-open" connection arises when a remote client contacts the Server with a connection request, but then does not reply to the Server's response.

While the optimum number of "half-open" connections allowed (the "Threshold") depends on many factors, the most important factor is the available bandwidth of your Internet connection.

Select the setting to match the bandwidth of your Internet connec- tion.

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Contents Page Page Table of Contents Overview General Problems Internet Access Printing Multi-Function TW100-BRF114U Regulatory ApprovalsInternet Access Features Broadband Router FeaturesIntroduction Configuration & Management LAN FeaturesAdvanced Internet Functions Package Contents Physical Details Front-mounted LEDsRear Panel Installation ProcedureChoose an Installation Site RequirementsPower Up Connect WAN CableConnect Printer Cable Check the LEDsOverview SetupTo Do this Refer to Configuration Program Using UPnPUsing your Web Browser PreparationIf you cant connect Setup Wizard Common Connection TypesCable Modems DSL ModemsBig Pond Australia Other Modems e.g. BroadbandSingTel RAS Home Screen Navigation & Data InputData LAN Screen LAN ScreenButtons Using the TW100-BRF114Us Dhcp Server Using another Dhcp ServerTo Configure your PCs to use Dhcp What Dhcp DoesPassword Screen Password DialogTCP/IP Settings Overview PC ConfigurationWindows Clients Using Dhcp Checking TCP/IP Settings Windows 9x/MEUsing Specify an IP Address Gateway Tab Win 95/98 Checking TCP/IP Settings Windows NT4.0 Windows NT4.0 TCP/IPObtain an IP address from a Dhcp Server Specify an IP AddressWindows NT4.0 Add Gateway Windows NT4.0 DNS Checking TCP/IP Settings Windows Network Configuration WinUsing a fixed IP Address Use the following IP Address TCP/IP Properties WinChecking TCP/IP Settings Windows XP Network Configuration Windows XPTCP/IP Properties Windows XP Internet Access Accessing AOLFor Windows 9x/ME/2000 For Windows XPPrinter Setup for Windows Print Port Driver SetupManagement Port OptionsBanner PortRetry Interval Windows NT 4.0 Server Configuration LPD/LPR PrintingWindows 2000/2003 Server Configuration Adding the PrinterClient PC Setup for LPD/LPR Printing Windows 2000 Select PortNetwork Path Windows 98/ME Macintosh Clients Linux ClientsFixed IP Address To act as a Dhcp Client recommendedPrinting Setup on Linux Printing SetupOther Unix Systems Field Data ExampleOperation Operation and StatusStatus Screen Internet Data Status ScreenSystem Connection Status PPPoE Data PPPoE ScreenConnection Connection LogConnection Log Messages Message DescriptionData Pptp Screen Connection Status PptpPptp Status Connection Status Telstra Big Pond Data Big Pond ScreenData RAS Screen Connection Details SingTel RASRAS Plan Network Mask Default Gateway DNS IP Address Dhcp Client Connection Details Fixed/Dynamic IP AddressData Fixed/Dynamic IP address Screen Advanced Features Access ControlTo use this feature OverviewAccess Control Screen Data Access Control ScreenGroup GroupInternet Access Group Members Screen Group MembersDefault Schedule Screen Data Default Schedule ScreenServices Screen Data Services ScreenAvailable Services Add New ServiceAccess Control Log Date/TimeSource IP address MAC addressDdns Service Dynamic DNSDynamic DNS Screen Data Dynamic DNS ScreenDdns Service User Name Password/Key Domain Name Ddns Status Ddns DataAdvanced Internet Screen Communication ApplicationsSpecial Applications Screen Special ApplicationsCommunication Applications Multi-DMZ Using a Special ApplicationData Special Applications Screen URL Filter URL Filter ScreenData URL Filter Screen Filter StringsIP Address seen by Internet Users Virtual ServersAdd Virtual Servers Screen Data Virtual Servers ScreenServers PropertiesFor each entry, the PC must be running Defining your own Virtual ServersAppropriate Server software Connecting to the Virtual Servers WAN Port Configuration Data WAN Port ScreenIdentification IP AddressLogin Default Copy from PC Save Cancel Connection Behavior Auto-disconnect Idle Time-outAutomatic Connect/Disconnect Manual Connect/DisconnectAdvanced Administration UpgradeNetwork Diag FirmwareConfig File Data Config File ScreenLogs Enable LogsData Logs Screen Mail Reports Mail AddressNetwork Diagnostics Data Network Diagnostics ScreenPing DNS LookupBackup DNS OptionsData Options Screen UPnPAllow Internet access to be disabled MTU sizePC Database PC Database ScreenAdministration Data PC Database ScreenKnown PCs Generate ReportData PC Database Admin Screen PC Database AdminPC Properties Entry Add as NewStandard Screen Remote Admin Data Remote Administration ScreenRemote Administration Enable Remote Management Port Number Current IP Ad- dressUsing this Screen RoutingRouting Screen Static Routing TableEnable RIP Data Routing ScreenStatic Routing Static Routing Table Entries Configuring Other Routers on your LAN Local RouterFor Router As Default Route Static Routing ExampleOther Routers on the Local LAN For the TW100-BRF114Us Routing TableFor Router Bs Default Route Enable DoS Firewall Threshold SecurityData Security Screen FirewallRespond to OptionsAllow IPsec Allow Pptp Allow L2TP Upgrade Firmware To perform the Firmware UpgradeTroubleshooting General ProblemsInternet Access Problem 1 Cant connect to the TW100-BRF114Uto configure itTo remove an existing printer port installation PrintingAppendix a Troubleshooting Broadband Router User Guide Appendix B Specifications Multi-Function TW100-BRF114UCE Standards Regulatory ApprovalsCE Marking Warning Limited Warranty Technical Support Appendix B Specifications