Juniper Networks IDP 800, IDP250, IDP8200 Connecting Forwarding Interfaces, Verifying Traffic Flow

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IDP 75, 250, 800, and 8200 Installation Guide

In proxy-ARP or router mode, if you are using multiple subnets in your protected network, you must configure static routes on the IDP sensor to these subnets. Without static routes, incoming traffic to those subnets can be lost. Alternatively, you can create a static route from the IDP sensor to an internal gateway that contains inbound routes to the protected subnets. (This does not apply to the IDP 8200 sensor.)

Connecting Forwarding Interfaces

Connect the ports on the sensor to either the protected network or the external network. See “Planning an Installation” on page 1 for the configuration you chose to implement. See “NIC Bypass and Cable Choices” on page 12 for information on using NIC bypass with transparent mode.

Inline transparent mode makes use of pairs of interfaces. On most sensors, the pairs are horizontal port pairs 0-1and 2-3 on each NIC. Traffic in inline transparent mode only flows between paired interfaces. You cannot have traffic flow from port 0 to port 2, for example, in inline transparent mode.

Other modes, such as router and proxy-ARP mode, do support non-paired interfaces.

Verifying Traffic Flow

To verify that traffic is flowing through your sensor:

1.Make sure your sensor is connected to a live traffic feed.

2.Log onto the sensor as root using the console serial port, or open an SSH connection to the management port.

3.Type sctop and press Enter.

4.Type s to see status information.

5.Examine the following information on the screen:

Protocol Packets

Flows

Sessions

Peak

Peak Time

Other

2

0

0

1

08/09/2006 03:08:07

ICMP

3

0

0

0

08/08/2006 18:03:51

UDP

3386

3

1

7

08/08/2006 19:31:01

TCP

151164

12

6

9

08/09/2006 07:01:36

6. Make sure the UDP or TCP values are changing.

Connecting the High Availability Port

After you have set up both machines in the HA cluster, connect their HA ports to each other using a crossover cable.

28„ Connecting Forwarding Interfaces

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Contents Releases 4.1r2a April Copyright Notice Table of Contents Chapter Adding the Sensor to NSM Index Page Sniffer Mode Passive List of FiguresPage List of Tables Page Conventions About This GuideAudience Icon Meaning DescriptionWeb Access for Documentation DocumentationRequesting Technical Support Self-Help Online Tools and Resources Opening a Case with JtacPage Planning an Installation Installation RoadmapIDP Configuration Basics IDP Sensor PlacementIDP Sensor Deployment Mode Sniffer Mode Passive Advantages and Disadvantages of Sniffer Mode Passive Transparent Mode Inline ActiveNetScreen-Security Manager Page Hardware Overview IDP SensorsIDP 75 Sensor IDP 250 SensorIDP 800 Sensor IDP 8200 Sensor IDP 800 Front PanelConfigurable NIC States Traffic Ports Forwarding InterfacesNIC Bypass State Settings Modes Availability DescriptionNormal State NIC State OptionsNIC Bypass and Cable Choices External Bypass Unit StateNICs Off State Console Serial Port Power SuppliesManagement Ports Management PortSystem Status LEDs IDP Sensor Power SuppliesIDP Sensor LEDs Management and High Availability Port LEDsTraffic Port LEDs Hard Drive LEDs on Front PanelPower Supply LEDs on Back Panel Power Supply LED Definitions Back Panel LED DescriptionHard Drive LED Definitions Front Panel LED Description Installing the Sensor General Installation GuidelinesMounting Using Device Rack Rails Rack Mounting the IDP SensorRequired Tools Mounting Using Midmount Brackets Rail with Hinged Rear BracketConnecting Power RU Device IDP 75 Midmount BracketSimple Configuration Configuring the IDP SensorInitial Configuration Options Simple Configuration SettingsConnecting to the Sensor Simple Configuration ValuesAdvanced Configuration Using the Console Serial Port to Configure the SensorType an IP address and press Enter Following text appears Using the Management Port to Configure the Sensor Connecting Directly Using the Management PortConnecting Remotely Using the Management Port Simple or Advanced Configuration Using the Management PortQuickStart Simple Configuration ACM Advanced ConfigurationManager Administrator’s Guide Connecting Forwarding Interfaces Connecting the High Availability PortVerifying Traffic Flow Adding the Sensor to NSM Adding Your Sensor to NSMSelect Device is Reachable default Add Device Wizard Connection Settings Type ssh-keygen -l -f sshhostdsakey and press Enter Checking the Status of Your Sensor Add Device Wizard Importing the DevicePage Updating IDP Sensor Software Using NSM Firmware Manager Updating Software on the SensorLoading a Sensor Image into NSM Upgrading Sensor Software Updating IDP Sensor Software Without NSMReimaging the IDP Sensor Page Replacing a Power Supply IDP 800, and 8200 Only Remove a Power SupplyServicing the Device Install a Power Supply Replacing a Hard Drive IDP 800 and 8200 OnlyRemove a Hard Drive Install a Hard Drive Hard Drive Latch in Closed PositionPage Advanced Configuration Bridge ModeAdvanced Deployment Modes Bridge Mode Advantages and Disadvantages of Bridge ModeRouter Mode Advantages and Disadvantages of Router ModeProxy-ARP Mode Advantages and Disadvantages of Proxy-ARP ModeIDP High Availability Deployment Modes Specifications AC Power Specifications Nominal Value Acceptable Range IDP 75 Technical SpecificationsPhysical Specifications Value Power Cord Specifications CountryIDP 250 Technical Specifications Environmental SpecificationsSpecification Value IDP 800 Technical Specifications IDP 8200 Technical Specifications Safety Compliance EMI ComplianceImmunity Index ACMIDP 75, 250, 800, and 8200 Installation Guide 54 „ Index
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IDP75, IDP 800, IDP8200, IDP250 specifications

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