Juniper NetScreen-50 Assembly instructions

1(76&5((1
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Version 4.0 P/N 093-0578-000 Rev.E

Copyright Notice
NetScreen, NetScreen Technologies, GigaScreen, and the
NetScreen logo are registered trademarks of NetScreen
Technologies, Inc. NetScreen-5XP, NetScreen-5XT, NetScreen-25,
NetScreen-50, NetScreen-100, NetScreen-204, NetScreen-208,
NetScreen-500, NetScreen-1000, NetScreen-5200, NetScreen-
5400, NetScreen-Global PRO, NetScreen-Global PRO Express,
NetScreen-Remote Security Client, NetScreen-Remote VPN
Client, NetScreen-IDP 100, NetScreen-IDP 500, GigaScreen ASIC,
GigaScreen-II ASIC, and NetScreen ScreenOS are trademarks of
NetScreen Technologies, Inc. All other trademarks and registered
trademarks are the property of their respective
companies.Information in this document is subject to change
without notice.
No part of this document may be reproduced or transmitted in any
form or by any means, electronic or mechanical, for any purpose,
without receiving written permission from
NetScreen Technologies, Inc.
350 Oakmead Parkway
Sunnyvale, CA 94085 U.S.A.
www.netscreen.com
FCC Statement
The following information is for FCC compliance of Class A
devices: This equipment has been tested and found to comply with
the limits for a Class A digital device, pursuant to part 15 of the
FCC rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment is
operated in a commercial environment. The equipment generates,
uses, and can radiate radio-frequency energy and, if not installed
and used in accordance with the instruction manual, may cause
harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful
interference, in which case users will be required to correct the
interference at their own expense.
The following information is for FCC compliance of Class B
devices: The equipment described in this manual generates and
may radiate radio-frequency energy. If it is not installed in
accordance with NetScreen’s installation instructions, it may cause
interference with Radio and television reception. This equipment
has been tested and found to comply with the limits for a Class B
digital devices in accordance with the specifications in part 15 of
the FCC rules. These specifications are designed to provide
reasonable protection against such interference in a residential
installation. However, there is no guarantee that interference will
not occur in a particular installation.
If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and
receiver.
• Consult the dealer or an experienced radio/TV technician
for help.
• Connect the equipment to an outlet on a circuit different
from that to which the receiver is connected.
Caution: Changes or modifications to this product could void the
user's warranty and authority to operate this device.
Disclaimer
THE SOFTWARE LICENSE AND LIMITED WARRANTY FOR
THE ACCOMPANYING PRODUCT ARE SET FORTH IN THE
INFORMATION PACKET THAT SHIPPED WITH THE
PRODUCT AND ARE INCORPORATED HEREIN BY THIS
REFERENCE. IF YOU ARE UNABLE TO LOCATE THE
SOFTWARE LICENSE OR LIMITED WARRANTY, CONTACT
YOUR NETSCREEN REPRESENTATIVE FOR A COPY.

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The NetScreen-50 device provides security for small-and medium-sized companies, as
well as enterprise branch and remote offices. The NetScreen-50 device offers 170 Mbps of
firewall and 50 Mbps of 3DES VPN, protecting your LANs as well as public servers, such
as mail, web, or FTP.
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This manual has four chapters and two appendices.
Chapter 1, "Overview" provides an overview of the system, its ports, and power
requirements.
Chapter 2, "Installing the Device" details how to install the NetScreen-50 device on a
desktop or in a rack.
Chapter 3, "Configuring the Device" details how to connect the NetScreen-50 device to
your network, establish a Console session, set an IP address for the NetScreen-50 device,
and access the device using the WebUI.
Chapter 4, "Replacing the Fuse" provides procedures on how to replace components on the
device.
Appendix A, "Specifications" provides a list of physical specifications about the NetScreen-
50 device.
Appendix B, "Configuration for Common Criteria, EAL2" provides information about
configuring NetScreen devices for Common Criteria, EAL2 compliance.
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Some of the instructions and examples provided in this manual contain CLI commands,
most of which perform initial configuration of the NetScreen-500 device. The command
examples use conventions for variables and syntax.
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Most NetScreen CLI commands have changeable parameters that affect the outcome of
command execution. NetScreen documention represents these parameters as variables.
Such variables may include names, identification numbers, IP addresses, subnet masks,
numbers, dates, and other values.
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The variable notation used in this manual consists of italicized parameter identifiers. For
example, the set arp command uses four identifiers, as shown here:

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set arp
{
ip_addr mac_addr interface
age number |
always-on-dest |
no-cache
}
where
•ip_addr represents an IP address.
•mac_addr represents a MAC address.
•interface represents a physical or logical interface.
•number represents a numerical value.
Thus, the command might take the following form:
ns-> set arp 172.16.10.11 00e02c000080 ethernet2
where 172.16.10.11 is an IP address, 00e02c000080 is a MAC address, and ethernet2 is
a physical interface.
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The following list shows the CLI variable names used in NetScreen documents.
comm_name The community name of a host or other device.
date_str A date value.
dev_name A device name, as with flash card memory.
dom_name A domain name, such as “acme” in www.acme.com.
dst_addr A destination address, as with a policy definition that defines a source and
destination IP address.
filename The name of a file.
grp_name The name of a group, such as an address group or service group.
interface A physical or logical interface.
id_num An identification number.
ip_addr An IP address.
key_str A key, such as a session key, a private key, or a public key.
key_hex A key expressed as a hexadecimal number.
loc_str A location of a file or other resource.
mac_addr A MAC address.
mbr_name The name of a member in a group, such as an address group or a service
group.
mask A subnet mask, such as 255.255.255.224 or /24.

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Some commands contain multiple variables of the same type. The names of such variables
may be numbered to identify each individually. For example, the set dip command
contains two id_num variables, each numbered for easy identification:
set dip group id_num1 [ member id_num2 ]
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Each CLI command description in this manual reveals some aspect of command syntax.
This syntax may include options, switches, parameters, and other features. To illustrate
syntax rules, some command descriptions use dependency delimiters. Such delimiters
indicate which command features are mandatory, and in which contexts.
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Each syntax description shows the dependencies between command features by using
special characters.
•The { and } symbols denote a mandatory feature. Features enclosed by these
symbols are essential for execution of the command.
name_str The name of an item, such as an address book entry.
number A numeric value, usually an integer, such as a threshold or a maximum.
pol_num A policy number.
port_num A number identifying a logical port.
pswd_str A password.
ptcl_num A number uniquely identifying a protocol, such as TCP, IP, or UDP.
serv_name The name of a server.
shar_secret A shared secret value.
spi_num A Security Parameters Index (SPI) number.
src_addr A source address, as with a policy definition that defines a source and
destination IP address.
string A character string, such as a comment.
svc_name The name of a service, such at HTTP or MAIL.
time_str A time value.
tunn_str The name of a tunnel, such as an L2TP tunnel.
url_str A URL, such as www.acme.com.
usr_str A user, usually an external entity such as a dialup user.
vrouter A local virtual router, such as trust-vr or untrust-vr.
zone The name of a security zone.

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•The [ and ] symbols denote an optional feature. Features enclosed by these
symbols are not essential for execution of the command, although omitting such
features might adversely affect the outcome.
•The | symbol denotes an “or” relationship between two features. When this
symbol appears between two features on the same line, you can use either
feature (but not both). When this symbol appears at the end of a line, you can
use the feature on that line, or the one below it.
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Many CLI commands have nested dependencies, which make features optional in some
contexts, and mandatory in others. The three hypothetical features shown below
demonstrate this principle.
[ feature_1 { feature_2 | feature_3 } ]
In this example, the delimiters [ and ] surround the entire clause. Consequently, you can
omit feature_1, feature_2, and feature_3, and still execute the command successfully.
However, because the { and } delimiters surround feature_2 and feature_3, you must
include either feature_2 or feature_3 if you include feature_1. Otherwise, you cannot
successfully execute the command.
The following example shows some of the set interface command’s feature dependencies.
set interface vlan1 broadcast { flood | arp [ trace-route ] }
The { and } brackets indicate that specifyng either flood or arp is mandatory. Bycontrast,
the [ and ] brackets indicate that the arp option’s trace-route switch is not mandatory.
Thus, the command might take any of the following forms:
ns-> set interface vlan1 broadcast flood
ns-> set interface vlan1 broadcast arp
ns-> set interface vlan1 broadcast arp trace-route
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As you execute CLI commands using the syntax descriptions in this manual, you may find
that certain commands and command features are unavailable for your NetScreen device
model.
Because NetScreen devices treat unavailable command features as improper syntax,
attempting to use such a feature usually generates the unknown keyword error
message. When this message appears, confirm the feature’s availability using the ?
switch. For example, the following commands list available options for the set vpn
command:
ns-> set vpn ?
ns-> set vpn vpn_name ?
ns-> set vpn gateway gate_name ?

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To obtain technical documentation for any NetScreen product, visit www.netscreen.com/
support/manuals.html. To access the latest NetScreen documentation, see the Current
Manuals section. To access archived documentation from previous releases, see the
Archived Manuals section.
To obtain the latest technical information on a NetScreen product release, see the release
notes document for that release. To obtain release notes, visit www.netscreen.com/support
and select Software Download. Select the product and version, then click Go. (To
perform this download, you must be a registered user.)
If you find any errors or omissions in the following content, please contact us at the e-mail
address below:
[e-mail]
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To receive important news on product updates, please visit our Web site at
www.netscreen.com.

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This chapter provides detailed descriptions of the NetScreen-50 chassis.
Topics explained in this chapter include:
•“The Front Panel” on page 2
–“Power and Status LEDs” on page 2
–“Configuration Reset Pinhole” on page 4
–“Console and Modem Ports” on page 4
–“Compact Flash Card Slot” on page 4
–“Ethernet Interfaces” on page 5
•“The Rear Panel” on page 5
Note: For safety warnings and instructions, please refer to the NetScreen Safety Guide.
The instructions in this guide warn you about situations that could cause bodily injury.
Before working on any equipment, be aware of the hazards involved with electrical
circuitry and be familiar with standard practices for preventing accidents.

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The front panel of the NetScreen-50 device has the following:
•Power and status LEDs.
•Configuration reset pinhole, for resetting the device to the original factory
default settings.
•A Console port, for connecting to serial terminal emulation programs such as
HyperTerminal.
•A modem port.
•A Compact Flash card slot, for storage of system images, configuration files,
keys, and logs.
•Four Ethernet ports, for connecting the NetScreen-50 device to your LAN or
local workstations and to the Internet.
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The LEDs display up-to-date information about critical NetScreen-50 functions.
Power and Status LEDs
Console Modem
Compact Flash Slot Ethernet Ports
Reset Pinhole
Power LED
Alarm LED HA LED
Flash LED
Status LED
Session LED

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The LEDs are as follows:
LED Purpose Color Meaning
Power Power Status green Power is functioning correctly.
off The device is not receiving power.
Alarm System Alarm red Critical alarm—failure of hardware component or
software module (such as a cryptographic
algorithm)
amber Major alarm:
Low memory (<10% remaining)
High CPU utilization (>90%)
Log memory full
Sessions full
Maximum number of VPN tunnels reached
Firewall attacks detected
off No alarms.
Status System Status blinking green Normal operation
green Booting up normally.
HA High Availability
(HA) off No HA activity has been defined.
green Port is a master in a redundancy cluster.
amber Port is a slave in a redundancy cluster.
Session Session
Utilization amber Session utilization is between 70% and 90%.
red Session utilization is greater than 90%.
off Normal operation.
Flash Compact Flash
(CF) Card Status green The card is installed.
blinking green Read-write activity is detected.
off CF slot is empty.

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The configuration reset pinhole is a switch that resets the device to its original default
settings. To use this switch, insert a stiff wire (such as a straightened paper clip) into the
pinhole.
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The Console port is a RJ-45 serial console port connector, for VT100 terminal emulator
programs to perform local configuration and administration.
The Modem port is a RJ-45 serial console port connector, for establishing remote console
sessions using dialup connections through a 9600 bps RS-232 cable. Dialing into the
modem establishes the dialup console connection.
The table below lists the RJ-45 to DB-9 adapter connection definitions. To employ a
standard UART port, both the console and the modem ports must use this configuration.
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The Compact Flash slot is for downloading or uploading system software or
configurations. This slot can accept a SanDisk CompactFlashTM card with a variety of
memory capacities. NetScreen has tested 96MB and 512MB cards. The NetScreen device
automatically detects the presence of a flash card and records the event log to it.
Warning! Because resetting the device restores it to the original factory default
configuration, any new configuration settings are lost, and the firewall and all VPN service
become inoperative.
DB9 Signal Abbreviation DTE DCE RJ45
1 Data Carrier Detect DCD In Out NC
2 Received Data RD In Out 3
3 Transmitted Data TD Out In 6
4 Data Terminal Ready DTR Out In 7
5 Signal Ground SGND N/A N/A 4
6 Data Set Ready DSR In Out 2
7 Request To Send RTS Out In 8
8 Clear To Send CTS In Out 1
9RingIndicator RI In Out NC

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Each Ethernet port is a 10/100 auto-sensing interface. Each port has a pair of LEDs: the
left LED indicates network traffic activity and the right LED indicates if the link is up
(the port is connected to an active device).
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The rear panel of the NetScreen-50 device contains the power outlet and on/off switch.
You can order the NetScreen-50 device with either an AC or DC power supply.
Power Outlet
On/Off Switch

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This chapter describes how to install a NetScreen-50 device in an equipment rack or on a
desktop.
Topics in this chapter include:
•“General Installation Guidelines” on page 8
•“Desktop Installation Guidelines” on page 9
•“Equipment Rack Mounting” on page 9
–“Equipment Rack Installation Guidelines” on page 9
–“Equipment Rack Accessories and Required Tools” on page 10
–“NetScreen-50 Rack Mount” on page 10
Note: For safety warnings and instructions, please refer to the NetScreen Safety Guide.
The instructions in this guide warn you about situations that could cause bodily injury.
Before working on any equipment, be aware of the hazards involved with electrical
circuitry and be familiar with standard practices for preventing accidents.

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Observing the following precautions can prevent injuries, equipment failures and
shutdowns.
•Never assume that the device isdisconnected from a power source. Always check
first.
•Room temperature might not be sufficient to keep equipment at acceptable
temperatures without an additional circulation system. Ensure that the room in
which you operate the device has adequate air circulation.
•Do not work alone if potentially hazardous conditions exist.
•Look carefully for possible hazards in your work area, such as moist floors,
ungrounded power extension cables, frayed power cords, and missing safety
grounds.
•The product should be installed in a restricted area to prevent personal injury
from exposure to DC voltage.
Warning! To prevent abuse and intrusion by unauthorized personnel, install the
NetScreen-50 device in a locked-room environment.

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Observing the following precautions can prevent injuries, equipment failures and
shutdowns.
•Never assume that the power cord is disconnected from a power source. Always
check first.
•Room temperature might not be sufficient to keep equipment at acceptable
temperatures without an additional circulation system. Ensure that the room in
which you operate the device has adequate air circulation.
•Do not work alone if potentially hazardous conditions exist.
•Look carefully for possible hazards in your work area, such as moist floors,
ungrounded power extension cables, frayed power cords, and missing safety
grounds.
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The NetScreen-50 device comes with accessories for mounting the device in a standard 19-
inch equipment rack.
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The location of the chassis, the layout of the equipment rack, and the security of your
wiring room are crucial for proper system operation.
Use the following guidelines while configuring your equipment rack.
•Enclosed racks must have adequate ventilation. Such ventilation requires
louvered sides and a fan to provide cooling air.
•When mounting a chassis in an open rack, be sure that the rack frame does not
block the intake or exhaust ports. If you install the chassis on slides, check the
position of the chassis when it is seated all the way into the rack.
•In an enclosed rack with a ventilation fan in the top, equipment higher in the
rack can draw heat from the lower devices. Always provide adequate ventilation
for equipment at the bottom of the rack.
•Baffles can isolate exhaust air from intake air. The best placement of the baffles
depends on the airflow patterns in the rack.
Warning! To prevent abuse and intrusion by unauthorized personnel, it is extremely
important to install the NetScreen device in a secure environment.

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Rack mounting requires the following accessories and tools:
•1 Phillips-head screwdriver
•4 screws to match the rack (if the thread size of the screws provided in the
NetScreen-50 product package do not fit the thread size of the rack)
•The included rack mount bracket kit.
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To rack mount the NetScreen-50 device:
1. Screw the rack mount brackets to each side of the chassis, as shown below.
2. Screw the left and right brackets to the rack.