Juniper Networks Home Security System IDP250 User Manual

IDP Series Intrusion Detection and Prevention Appliances  
IDP250 Installation Guide  
Release 5.0  
Juniper Networks, Inc.  
1194 North Mathilda Avenue  
Sunnyvale, California 94089  
USA  
408-745-2000  
Part Number: 530-029729-01, Revision 01  
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Table of Contents  
Objectives ......................................................................................................xi  
Audience ........................................................................................................xi  
Documentation Conventions ..........................................................................xi  
Related Documentation ................................................................................xiii  
Requesting Technical Support .......................................................................xiv  
Self-Help Online Tools and Resources ....................................................xiv  
Opening a Case with JTAC .......................................................................xv  
IDP250 Overview ............................................................................................3  
Power Supply ..................................................................................................4  
Hard Drive ......................................................................................................4  
Fans ................................................................................................................4  
System Status LEDs .........................................................................................4  
USB Port ..........................................................................................................5  
Serial Console Port ..........................................................................................5  
Management Interface Port .............................................................................5  
High Availability Interface Port ........................................................................6  
Traffic Interface Ports ......................................................................................7  
Copper Ports .............................................................................................7  
Fiber Ports ................................................................................................8  
Traffic Interface Features ..........................................................................9  
Deployment Mode ............................................................................10  
Internal Bypass .................................................................................10  
NICs Off ...........................................................................................11  
External Bypass ................................................................................12  
Peer Port Modulation ..............................................................................12  
Layer 2 Bypass ........................................................................................13  
On-Box Software Overview ...........................................................................15  
Centralized Management with NSM Overview ...............................................16  
J-Security Center Updates Overview ..............................................................17  
Table of Contents  
vii  
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IDP250 Installation Guide  
Before You Begin ...........................................................................................21  
Basic Steps ....................................................................................................22  
Rack Mounting Kits and Required Tools ........................................................23  
Mounting to Midmount Brackets ...................................................................24  
Mounting to Rack Rails ..................................................................................25  
Connecting Power .........................................................................................25  
Performing the Initial Configuration ..............................................................27  
Installing the Product License Key .................................................................32  
Connecting Devices That Support Auto-MDIX .........................................36  
Connecting Devices to Support Internal Bypass ......................................37  
Connecting and Disconnecting Fiber Cables ..................................................37  
Verifying Traffic Flow ....................................................................................38  
Reviewing Compatibility with NSM ...............................................................41  
Adding a Reachable IDP Device to NSM ........................................................41  
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Table of Contents  
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Table of Contents  
Updating Software (NSM Procedure) .............................................................49  
Upgrading Software (CLI Procedure) ..............................................................51  
Replacing a Power Supply .............................................................................53  
Reimaging and Relicensing an Appliance ......................................................55  
IDP250 Technical Specifications ....................................................................59  
Standards Compliance ...................................................................................61  
Common Criteria EAL2 Compliance ..............................................................63  
Index .............................................................................................................67  
Table of Contents  
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IDP250 Installation Guide  
x
Table of Contents  
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Preface  
This preface includes the following topics:  
Objectives  
Audience  
This guide explains how to install, configure, update, and service an IDP Series  
Intrusion Detection and Prevention appliance.  
This guide is intended for experienced system and network specialists.  
Documentation Conventions  
This section provides all the documentation conventions that are followed in this  
guide. Table 1 on page xi defines notice icons used in this guide.  
Table 1: Notice Icons  
Icon Meaning  
Description  
Informational note  
Caution  
Indicates important features or instructions.  
Indicates a situation that might result in loss of data or hardware damage.  
Warning  
Alerts you to the risk of personal injury or death.  
Alerts you to the risk of personal injury from a laser.  
Laser warning  
Objectives  
xi  
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IDP250 Installation Guide  
Table 2 on page xii defines text conventions used in this guide.  
Table 2: Text Conventions  
Convention  
Description  
Examples  
Bold typeface like this  
Represents commands and keywords  
in text.  
Issue the clock source command.  
Specify the keyword exp-msg.  
Click User Objects  
Represents keywords  
Represents UI elements  
Represents text that the user must type.  
Bold typeface like this  
user input  
Represents information as displayed on  
the terminal screen.  
fixed-width font  
host1#  
show ip ospf  
Routing Process OSPF 2 with Router  
ID 5.5.0.250  
Router is an area Border Router  
(ABR)  
Key names linked with a plus (+)  
sign  
Indicates that you must press two or more Ctrl + d  
keys simultaneously.  
Italics  
Emphasizes words  
Identifies variables  
The product supports two levels of  
access, user and privileged.  
clusterID, ipAddress.  
The angle bracket (>)  
Indicates navigation paths through the UI Object Manager > User Objects > Local  
by clicking menu options and links. Objects  
Table 3 on page xii defines syntax conventions used in this guide.  
Table 3: Syntax Conventions  
Convention  
Description  
Examples  
Words in plain text  
Words in italics  
Represent keywords  
Represent variables  
terminal length  
mask, accessListName  
diagnostic | line  
Words separated by the pipe ( | )  
symbol  
Represent a choice to select one keyword or  
variable to the left or right of this symbol. The  
keyword or variable can be optional or  
required.  
Words enclosed in brackets ( [ ] )  
Represent optional keywords or variables.  
[ internal | external ]  
Words enclosed in brackets followed Represent optional keywords or variables that [ level1 | level2 | 11 ]*  
by and asterisk ( [ ]*)  
can be entered more than once.  
Words enclosed in braces ( { } )  
Represent required keywords or variables.  
{ permit | deny } { in | out } {  
clusterId | ipAddress }  
xii  
Documentation Conventions  
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Preface  
Related Documentation  
Table 4 on page xiii lists related IDP documentation.  
Table 4: Related IDP Documentation  
Document  
Description  
Release notes  
Contains information about what is included in a specific product release:  
supported features, unsupported features, changed features, known problems,  
and resolved problems. If the information in the release notes differs from  
the information found in the documentation set, follow the release notes.  
ACM Online Help  
Available through the Appliance Configuration Manager (ACM). The  
context-sensitive online help describes how to use the QuickStart and ACM  
Wizard pages to configure network settings, network interfaces, and NIC  
features.  
IDP Series Installation Guide: IDP200,  
IDP600, IDP1100  
Provides instructions for installing, configuring, updating, and servicing the  
IDP Series appliances.  
IDP75 Installation Guide  
IDP250 Installation Guide  
IDP800 Installation Guide  
IDP8200 Installation Guide  
IDP Concepts and Examples Guide  
IDP Administration Guide  
Explains IDP features and provides examples of how to use the system.  
Provides procedures for implementing IDP features, monitoring performance,  
and monitoring security events.  
IDP Custom Attack Objects Reference and  
Examples Guide  
Provides in-depth examples and reference information for creating custom  
attack objects.  
IDP Reporter Users Guide  
Describes how to use IDP Reporter to view and generate security reports and  
application usage reports.  
Table 4 on page xiii lists related NSM documentation.  
Table 5: Related NSM Documentation  
Document  
Description  
Network and Security Manager release notes  
Provides information about new features, changed features, fixed problems,  
and known issues with the NSM release.  
Network and Security Manager Installation Guide Describes how to install the NSM management system on a single server or  
on separate servers. It also includes information on how to install and run  
the NSM user interface. This guide is intended for IT administrators responsible  
for the installation and/or upgrade to NSM.  
Related Documentation  
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xiii  
                         
IDP250 Installation Guide  
Table 5: Related NSM Documentation (continued)  
Document  
Description  
Describes how to configure and manage IDP devices using NSM. This guide  
Network and Security Manager Configuring  
Intrusion Detection and Prevention Devices Guide also helps in understanding of how to configure basic and advanced NSM  
functionality, including adding new devices, deploying new device  
configurations, updating device firmware, viewing log information, and  
monitoring the status of IDP devices.  
Network and Security Manager Administration  
Guide  
Describes how to use and configure key management features in the NSM.  
It provides conceptual information, suggested workflows, and examples where  
applicable. This guide is best used in conjunction with the NSM Online Help,  
which provides step-by-step instructions for performing management tasks  
in the NSM UI.  
This guide is intended for application administrators or those individuals  
responsible for owning the server and security infrastructure and configuring  
the product for multi-user systems. It is also intended for device configuration  
administrators, firewall and VPN administrators, and network security  
operation center administrators.  
Network and Security Manager Online Help  
Provides task-oriented procedures describing how to perform basic tasks in  
the NSM user interface. It also includes a brief overview of the NSM system  
and a description of the GUI elements.  
Requesting Technical Support  
Technical product support is available through the Juniper Networks Technical  
Assistance Center (JTAC). If you are a customer with an active J-Care or JNASC support  
contract, or are covered under warranty, and need post-sales technical support, you  
can access our tools and resources online or open a case with JTAC.  
JTAC policiesFor a complete understanding of our JTAC procedures and policies,  
review the JTAC User Guide located at  
Product warrantiesFor product warranty information, visit  
JTAC Hours of Operation The JTAC centers have resources available 24 hours  
a day, 7 days a week, 365 days a year.  
Self-Help Online Tools and Resources  
For quick and easy problem resolution, Juniper Networks has designed an online  
self-service portal called the Customer Support Center (CSC) that provides you with  
the following features:  
Search for known bugs: http://www2.juniper.net/kb/  
Find product documentation: http://www.juniper.net/techpubs/  
xiv  
Requesting Technical Support  
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Preface  
Find solutions and answer questions using our Knowledge Base:  
Download the latest versions of software and review release notes:  
Search technical bulletins for relevant hardware and software notifications:  
Join and participate in the Juniper Networks Community Forum:  
Open a case online in the CSC Case Management tool: http://www.juniper.net/cm/  
To verify service entitlement by product serial number, use our Serial Number  
Opening a Case with JTAC  
You can open a case with JTAC on the Web or by telephone.  
Use the Case Management tool in the CSC at http://www.juniper.net/cm/ .  
Call 1-888-314-JTAC (1-888-314-5822 toll-free in the USA, Canada, and Mexico).  
For international or direct-dial options in countries without toll-free numbers, see  
Requesting Technical Support  
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xv  
 
IDP250 Installation Guide  
xvi  
Requesting Technical Support  
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Part 1  
Hardware and Software Overview  
Hardware and Software Overview  
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1
 
IDP250 Installation Guide  
2
Hardware and Software Overview  
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Chapter 1  
Hardware Overview  
This chapter includes the following topics:  
IDP250 Overview  
The IDP250 appliance is optimal for medium central sites or large branch offices.  
Figure 1 on page 3 shows the location of appliance LEDs and ports.  
Figure 1: IDP250 Front Panel  
Related Topics  
IDP250 Overview  
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IDP250 Installation Guide  
Power Supply  
The appliance has one power supply. It is a field replaceable unit (FRU).  
Related Topics  
Hard Drive  
Fans  
The appliance has one 80 GB hard drive. It is not a field replaceable unit (FRU).  
When the system is cool, appliance fans spin at a slower speed to reduce noise and  
save energy. As the system heats up, the fans run at a faster speed. In the event of  
fan failure, the appliance fault LED blinks and the remaining fan or fans run at full  
speed until the failed fan is replaced.  
The fans for this model are not field replaceable units (FRUs).  
System Status LEDs  
Table 6 on page 4 describes system status LED states.  
Table 6: System Status LED States  
LED  
Status  
Solid green  
Off  
Description  
Power  
System is powered on.  
System is powered off.  
Hard Drives  
Fault  
Flashing amber  
Off  
Hard disk is active.  
Hard drive has no activity.  
Slowly blinking red  
Quickly blinking red  
Solid red  
Power failure.  
Fan failure.  
Overheating.  
Off  
Heat and power are normal.  
4
Power Supply  
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Chapter 1: Hardware Overview  
USB Port  
The appliance has a USB port you can use to reimage the appliance, if necessary.  
Serial Console Port  
The console serial port provides access, using an RJ-45 connector, to the  
command-line interface (CLI).  
NOTE: Although both the console serial port and the management port use RJ-45  
connectors, do not plug the network cable into the console serial port.  
Management Interface Port  
The management interface port is a 10/100/1000 Mbps Ethernet port. In the  
configuration and logs, the port is eth0. Use this port as a dedicated management  
port, connecting the device to a switch accessible by your management subnet.  
The IP address you assign the management port is the IP address you use to connect  
to the Appliance Configuration Manager (ACM) when you initially configure the device.  
It is also the address the Network and Security Manager (NSM) uses to connect to  
the device.  
Figure 2 on page 5 shows the management interface port LEDs.  
Figure 2: Management Interface Port LEDs  
Table 7 on page 5 describes the management interface port LED states.  
Table 7: Management Port LEDs  
LED  
State  
Description  
LINK  
Glows green  
Blinks green  
Off  
Link is present.  
Activity.  
No link is present.  
USB Port  
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IDP250 Installation Guide  
Table 7: Management Port LEDs (continued)  
LED  
State  
Orange  
Green  
Off  
Description  
TX/RX  
Connection is 1000 Mbps.  
Connection is 100 Mbps.  
If LINK indicates activity, TX/RX off indicates connection  
is 10 Mbps.  
If LINK indicates no activity, TX/RX off indicates no activity  
as well.  
High Availability Interface Port  
The high availability interface port is a 10/100/1000 Mbps Ethernet port. In the  
configuration and logs, the port is eth1. The high availability interface is a dedicated  
interface used to share state information among IDP appliances in a high availability  
cluster.  
NOTE: IDP 5.0 does not support high availability.  
Figure 3 on page 6 shows the management interface port LEDs.  
Figure 3: High Availability Interface Port LEDs  
Table 8 on page 6 describes the high availability interface port LED states.  
Table 8: High Availability Port LEDs  
LED  
State  
Description  
LINK  
Glows green  
Blinks green  
Off  
Link is present.  
Activity.  
No link is present.  
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High Availability Interface Port  
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Table 8: High Availability Port LEDs (continued)  
LED  
State  
Orange  
Green  
Off  
Description  
TX/RX  
Connection is 1000 Mbps.  
Connection is 100 Mbps.  
If LINK indicates activity, TX/RX off indicates connection  
is 10 Mbps.  
If LINK indicates no activity, TX/RX off indicates no activity  
as well.  
Traffic Interface Ports  
You use the traffic interface ports to connect the appliance to your network. The  
interfaces receive and forward traffic. The type and capacity of interface ports vary  
by model.  
The following topics describe features of traffic interface ports:  
Copper Ports  
Figure 4 on page 7 shows copper port LEDs.  
Figure 4: Copper Port LEDs  
Table 9 on page 8 describes copper port LED states.  
Traffic Interface Ports  
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Table 9: Copper Port LEDs  
LED  
State  
Description  
LINK ACT  
Glows green  
Blinks green  
Off  
Link is present.  
Activity.  
No link present.  
Connection is 100 Mbps.  
Connection is 1 Gbps.  
LINK SPD  
Green  
Yellow  
Off  
If LINK ACT is on, the connection is 10 Mbps. If LINK ACT  
is off, LINK SPD off indicates no link is present as well.  
BYP  
Green  
Yellow  
Off  
Interface is not in bypass mode.  
Interface is in bypass mode.  
Interface is turned off (NICs off state).  
NOTE: For copper interface ports, if failure or shutdown triggers NICs off state, LINK  
ACT and LINK SPD LEDs are turned off.  
Fiber Ports  
Figure 5 on page 8 shows fiber port LEDs.  
Figure 5: Fiber Port LEDs  
Table 10 on page 9 describes fiber port LED states.  
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Table 10: Fiber Port LEDs  
LED  
State  
Description  
LINK ACT  
Glows green  
Flashes green  
Off  
Link is present.  
Activity.  
No link present.  
Connection is 100 Mbps.  
Connection is 1 Gbps.  
Connection is 10 Gbps.  
LINK SPD  
Green  
Yellow  
Orange  
Off  
If LINK ACT is on, the connection is 10 Mbps. If LINK ACT  
is off, LINK SPD off indicates no link is present as well.  
BYP  
Green  
Yellow  
Off  
Interface is not in bypass mode.  
Interface is in bypass mode.  
Interface is turned off (NICs off state).  
NOTE: For fiber interface ports, if failure or shutdown triggers NICs off state, LINK  
ACT and LINK SPD LEDs remain lit.  
Traffic Interface Features  
In IDP deployments, pairs of traffic interfaces are implemented as virtual routers.  
For example, interface ports eth2 and eth3 form a virtual router vr1. For each virtual  
router, you use the Appliance Configuration Manager (ACM) to configure the  
deployment mode (sniffer or transparent) and bypass options (internal, external, or  
off). The following topics describe these settings:  
For guidance on using ACM to configure virtual router settings, see the ACM online  
help.  
Traffic Interface Ports  
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Deployment Mode  
For each virtual router, you select the deployment mode:  
SnifferIn an out-of-path, sniffer mode deployment, the IDP appliance can detect  
attacks but can take only limited action. You connect the IDP traffic interfaces  
to a mirrored port of a network hub or switch.  
TransparentIn an in-path, transparent mode deployment, traffic arrives in one  
interface and is forwarded through the other. The IDP appliance detects attacks  
and takes action according to your security policy rules. You connect the IDP  
traffic interfaces to firewalls or switches in the network path.  
You can deploy a mix of sniffer and transparent mode virtual routers on the same  
IDP appliance.  
For more information on deployment mode, see the IDP Concepts and Examples  
Guide.  
Internal Bypass  
The Internal Bypass setting supports network security policies that privilege availability  
over security. In the event of failure or graceful shutdown, with internal bypass  
configured, the interfaces to enter an internal bypass state. In internal bypass, physical  
interfaces join mechanically to form a circuit that bypasses IDP processing. For  
example, if you configure internal bypass for vr0, and the IDP appliance encounters  
failure or is shut down, eth2 and eth3 join to form a circuit that avoids the IDP engine  
and forwards the traffic to the next network hop.  
Internal bypass operates through a timing mechanism. When enabled, the timer on  
traffic interfaces counts down to a bypass trigger point. When the IDP appliance is  
turned on and available, it sends a reset signal to the traffic interface timer so that  
it does not reach the bypass trigger point. If the IDP operating system encounters  
failure, then it fails to send the reset signal, the timer counts down to the trigger  
point, and the traffic interfaces enter a bypass state. If the IDP appliance is shut down  
gracefully, the traffic interfaces immediately enter bypass.  
Figure 6 on page 11 shows the communications path when a virtual router is in  
internal bypass state.  
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Traffic Interface Ports  
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Figure 6: Internal Bypass  
When the IDP operating system resumes healthy operations, it sends a reset signal  
to the traffic interfaces, and the interfaces resume normal operation.  
NOTE: All copper port traffic interfaces support internal bypass. Some, but not all,  
fiber port traffic interfaces support internal bypass. Check with your sales contact  
for applicable part numbers.  
NOTE: Bypass settings are applicable only for deployments where the virtual router  
is in the network pathtransparent mode deployments.  
NOTE: The bypass and PPM features are applied independently. The Internal Bypass  
setting is related to the status of the IDP operating system. The peer port modulation  
setting is related to the status of the link. It is possible to have a healthy operating  
system and a link with status down, or a failed operating system and a link with  
status up.  
NICs Off  
The NICs Off setting supports network security policies that privilege security over  
availability. With NICs Off configured, in the event of failure or graceful shutdown,  
the interfaces are turned off and the IDP appliance becomes a point of failure. If your  
network design includes redundant network paths, you can configure your routers  
to detect the downed IDP interfaces and choose an alternate path.  
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External Bypass  
The External Bypass setting supports third-party external bypass units. When the  
IDP appliance is turned on and available, it sends NetScreen Redundancy Protocol  
(NSRP) heartbeats to the external bypass unit. When the NSRP packets flow, the  
external bypass unit allows connections to proceed through the IDP appliance. If IDP  
encounters failure or is shut down, it cannot send the NSRP packets. IDP traffic  
interfaces enter a bypass state. When the external bypass unit detects this, it forwards  
packets around the IDP appliance, according to the rules you configure on the external  
bypass unit. See Figure 7 on page 12.  
Figure 7: Internal Bypass  
When the IDP appliance resumes healthy operations, it resumes sending NSRP  
packets. The external bypass unit detects this and allows connections to proceed  
through the virtual router.  
Peer Port Modulation  
The peer port modulation (PPM) feature supports deployments where routers monitor  
link state to make routing decisions. In these deployments, a router might be set to  
monitor link state on only one side of the IDP appliance. Suppose, for example, the  
router monitors only the IDP inbound interface. Suppose the inbound interface  
remains up but the outbound interface goes down. The router watching the inbound  
link would detect an available link and forward traffic to the IDP appliance. Traffic  
would be dropped at the point of failurethe outbound link. PPM propagates a link  
loss state for one traffic interface to all interfaces in the IDP virtual router.  
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When PPM is enabled, a PPM daemon monitors the health of IDP traffic interfaces  
belonging to the same virtual router. If a traffic interface loses link, the PPM process  
turns off any associated network interfaces in the same virtual router so that other  
network devices detect that the virtual router is down and route around it. For  
example, assume you have enabled PPM and configured IDP virtual routers as shown  
Figure 8: Peer Port Modulation  
Suppose there is a network problem and eth3 goes down. The PPM daemon detects  
this and turns off the other interface in vr0: eth2. The interfaces in vr1, vr2, and vr3  
are unaffected. After the you fix the problem with eth3, the PPM daemon detects  
this, and turns on eth2.  
NOTE: The PPM feature is independent of the bypass feature (NIC state setting). PPM  
is related to the status of the link, not the status of the IDP operating system. A link  
can be down even when the IDP operating system is healthy. Note, however, that  
PPM runs as a control plane process and operates only when the IDP appliance is  
turned on and the control plane is available. If the IDP operating system is unavailable,  
the PPM feature is also unavailable, regardless of the setting for the NIC state.  
Layer 2 Bypass  
When you configure virtual routers, you have the option of enabling Layer 2 bypass.  
When the IDP appliance is turned on and is operating normally, the traffic interfaces  
select Layer 3 connections for inspection and process according to security policy  
rules.  
For Layer 2 connections, the interfaces either select traffic for inspection, drop it, or  
pass it through (uninspected), according to the following rules:  
The interfaces select address resolution protocol (ARP) and internet protocol  
(IPv4) traffic for inspection and process according to security policy rules.  
By default, the interfaces drop all other Layer 2 traffic.  
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If you enable Layer 2 bypass, the interfaces pass through IPv6, internetwork  
packet exchange (IPX), Cisco Discovery Protocol (CDP), and interior gateway  
routing protocol (IGRP).  
If you enable internal bypass, the interfaces do not pass through NetScreen  
Redundancy Protocol (NSRP) packets even if Layer 2 bypass is enabled.  
If you enable external bypass, all interfaces pass through the NSRP packets that  
are used in communication with the external bypass unit.  
14  
Traffic Interface Ports  
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Chapter 2  
Software Overview  
This chapter includes the following topics:  
On-Box Software Overview  
You use on-box software to get the appliance up and running in the desired  
deployment mode, to configure appliance interfaces, and to establish communication  
with Network and Security Manager (NSM). You can also use on-box utilities to  
manage appliance processes or generate on-box reports.  
Table 11 on page 15 summarizes the IDP on-box management software and utilities.  
Table 11: IDP On-Box Utilities  
Software  
Usage  
EasyConfig  
When you install a new appliance, you can use the EasyConfig script to  
assign the appliance an IP address and initialize a simple configuration.  
To run the EasyConfig script, connect to the serial port console.  
QuickStart  
When you install a new appliance, you can use QuickStart to deploy the  
appliance with the default virtual router configured in either sniffer or  
transparent mode and all configuration defaults.  
To access QuickStart, connect to the management interface and open the  
QuickStart URL in your browser.  
ACM  
When you install a new appliance, you can use ACM to configure the network  
settings, network interfaces, and user access.  
To access ACM, connect to the management interface and open the ACM  
URL in your browser.  
scio utility  
You can use the scio utility to get or set appliance configuration information.  
For details, see the IDP Administration Guide.  
On-Box Software Overview  
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IDP250 Installation Guide  
Table 11: IDP On-Box Utilities (continued)  
Software  
Usage  
idp.sh utility  
You can use the idp.sh utility to start, stop, or get status information on  
appliance processes.  
For details, see the IDP Administration Guide.  
sctop utility  
You can use the sctop utility to monitor connection tables and view status.  
For details, see the IDP Administration Guide.  
bypassStatus  
utility  
You can use bypassStatus commands to display settings for the daemon  
that monitors traffic interface NIC state.  
For details, see the IDP Administration Guide.  
IDP Reporter  
You can use the IDP Reporter to view statistics on attacks IDP has detected  
and responded to, as well as application volume tracking (AVT) statistics.  
For details, see the IDP Reporter Users Guide.  
Centralized Management with NSM Overview  
Juniper Networks Network and Security Manager (NSM) is a central management  
server capable of managing hundreds of IDP appliances and other Juniper Networks  
devices, such as ScreenOS firewalls, SA Series appliances, and IC Series appliances.  
You typically deploy NSM in a management subnet accessible to the NSM-managed  
devices.  
Figure 9 on page 16 illustrates the flow of information between the tiers of the central  
management solution: the NSM user interface, the NSM server, and IDP appliances.  
Figure 9: IDP-NSM Communication  
The IDP configuration, security policies, attack objects, and log records are stored in  
NSM server databases and administered using the NSM user interface. Communication  
between the NSM server and IDP appliances, and between the NSM server and the  
NSM user interface, is encrypted and authenticated.  
16  
Centralized Management with NSM Overview  
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For IDP deployments, centralized management provides the following benefits:  
Centralized management for IDP appliances and other network devices  
Consolidated logs from different devices in a single repository  
Centralized management of enterprise security policies  
Simplified management for attack signature updates  
Role-based administration  
For information about installing NSM and using NSM distributed management features,  
management objects (such as address objects, service objects, and templates), and  
navigational and display features, see the NSM documentation.  
J-Security Center Updates Overview  
The Juniper Networks Security Center (J-Security Center) routinely makes important  
updates available to IDP security policy components, including updates to the IDP  
detector engine and the NSM attack database.  
The IDP detector engine is a dynamic protocol decoder that includes support for  
decoding more than 60 protocols and more than 500 service contexts. You should  
update IDP detector engine when you first install IDP, whenever you upgrade, and  
whenever alerted to do so by Juniper Networks. You can view release notes for  
detector engine updates at  
The NSM attack database stores data definitions for attack objects. Attack objects  
are patterns comprising stateful signatures and traffic anomalies. Security policy  
rules direct the IDP engine to inspect traffic for attack objects. We recommend you  
schedule automatic updates for the NSM attack database.  
For more information about detector engine and attack object updates, see the IDP  
Administration Guide.  
J-Security Center Updates Overview  
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IDP250 Installation Guide  
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J-Security Center Updates Overview  
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IDP250 Installation Guide  
20  
Performing the Installation  
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Chapter 3  
Installation Overview  
This chapter includes the following topics:  
Before You Begin  
The location of the device, the layout of the mounting equipment, and the security  
of your wiring room are crucial for proper system operation.  
CAUTION: To prevent abuse and intrusion by unauthorized personnel, install the  
appliance in a secure environment.  
Observing the following precautions can prevent shutdowns, equipment failures,  
and injuries:  
Before installation, always check that the power supply is disconnected from  
any power source.  
Ensure that the room in which you operate the device has adequate air circulation  
and that the room temperature does not exceed 104°F (40°C).  
Do not place the device in an equipment-rack frame that blocks an intake or  
exhaust port. Ensure that enclosed racks have fans and louvered sides.  
Correct these hazardous conditions before any installation: moist or wet floors,  
leaks, ungrounded or frayed power cables, or missing safety grounds.  
For a comprehensive presentation on the precautions you must take to prevent  
personal injury and damage to the equipment, see the Juniper Networks Security  
Products Safety Guide.  
Before You Begin  
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Related Topics  
Basic Steps  
Take the following basic steps to install the appliance and connect it to your network:  
1. Read the release notes for your release. Release notes make you aware of  
supported and un