Western Telematic NPS-2HD manual Implementing IP Security

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5.6.1.Implementing IP Security

The NPS-2HD can be configured to restrict unauthorized IP addresses from Telneting to the unit. This allows the user to grant Telnet access to only a specific group of IP addresses, or block a particular IP address from gaining access. In the default state, the NPS accepts incoming IP connections from all hosts. To configure the IP Security feature, proceed as follows:

1.Access the Network Parameters menu as described in Section 5.6. Note that the Network Parameters menu is not available in User Mode.

2.When the Network Parameters menu appears, type 4 and press [Enter] to access the IP Security menu (Figure 5.6).

3.The IP Security menu lists five IP Security "masks" along with the selected permit/deny action for each mask.

a)Each Security Mask prompt is used to define a specific IP address or range of IP addresses. Each Mask Action prompt is used to define the permit/deny action for the corresponding Mask.

b)Masks are listed in order of ascending priority; Mask 1 has the lowest priority, Mask 5 has the highest priority.

c)Masks have a cumulative effect; high priority masks supersede the effect of lower priority masks.

d)Each IP Address consists of a series of four eight bit

5-10numbers. The number 255 is used as a wild card.

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Contents NPS-2HD Page Nameplate Power Warning Rack Mount InstallationDisconnect Power VentilationOptionSwiches CableNetwokCable SystemModeOnly Intelligent Power Control IntroductionTypographic Conventions Unit Description Front PanelBack Panel Circuit Breaker 115 VAC, 20 AmpsQuick Start Guide Page QuickStartGuide NPS-2HDHeavyDutyNetworkPowerSwitchUsersGuide Installation Power ConnectionCable Clamp Installation 1OutputCableClampInstallation Output Cable ClampInstallation Input Cable ClampOption Switches Disconnect TimeoutReset Unit to Defaults Default Button / Reset Button LocalDefault Parameters Option Connecting an External Modem Connecting the Network CableConsole Port Connection Configuration System Mode and User ModeCommunicating with the NPS =AllPlugswithAccess NPS Command/Menu Conventions Defining General ParametersButtonMode NPS-2HDHeavyDutyNetworkPowerSwitchUsersGuide Configuration Plug ParametersPage 00-40-05-5e-f3-90 Network ParametersImplementing IP Security Configuration Save Configuration Parameters Access the NPS-2HD Command Mode OperationMrmaio Displaying Plug StatusBoot/On/Off Commands OperationOFF POWER2 or /OF POWER2 and press Enter Default Command Automated ModeNPS-2HDHeavyDutyNetworkPowerSwitchUsersGuide Reset Network Port Other CommandsLogin as Different User Exit / DisconnectManual Operation Operating TipsSaving and Restoring Configuration Parameters Sending Parameters to a FileRestoring Saved Parameters Interface Descriptions Console Port InterfaceApx-2 Modem Port InterfaceSpecifications Input Connector IEC-320-C19 InletCustomer Service Apx-4Appendices Trademark and Copyright InformationApx-6 4-6 FrontactoryPanSttigsAddresslIndicators.FIndex 4-6,6-8 OnsolePortAPowerInlet NameOwnrship58,643