Juniper Networks IDP 800, IDP250, IDP8200 Advantages and Disadvantages of Sniffer Mode Passive

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IDP 75, 250, 800, and 8200 Installation Guide

Table 2: Advantages and Disadvantages of Sniffer Mode (Passive)

Advantages

Disadvantages

 

 

„ Seamlessly replaces the current intrusion

„ Passively monitors with limited prevention

detection

only

„ Causes minimal network changes

„ Requires a hub or the Switched Port Analyser

„ Does not create an additional

(SPAN) port of a switch

 

point-of-failure gateway

 

„Monitors and logs suspicious network activity

Figure 2: Transparent Mode (Inline Active)

 

Internet

 

 

Firewall

 

Hub or

IP 2.2.2.1

Switch

 

 

 

 

 

 

IP 1.1.1.1

 

 

 

eth2

 

 

 

No ip address

 

IDP Sensor

Forwarding Interface

Management Server

 

 

 

 

 

 

IP 2.2.2.4

eth0 IP 2.2.2.7 MGT

eth3

 

 

Interface

No IP address

 

 

Forwarding Interface

 

Hub or

 

 

Switch

 

 

 

 

 

User Interface

 

 

 

IP 2.2.2.5

Server1

Server2

Server3

 

IP 1.1.1.2

IP 1.1.1.3

IP 1.1.1.4

 

GW 1.1.1.1

GW 1.1.1.1

GW 1.1.1.1

 

 

Protected Machines

 

 

Table 3 lists the advantages and the disadvantages of using the sensor in active transparent (inline) mode.

4„ IDP Configuration Basics

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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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