Juniper SRX340 User manual

Quick Start
SRX340
IN THIS GUIDE
Step 1: Begin | 1
Step 2: Up and Running | 5
Step 3: Keep Going | 10
Step 1: Begin
IN THIS SECTION
Meet the SRX340 | 2
Install the SRX340 in a Rack | 2
Power On | 4
In this guide, we provide a simple, three-step path, to quickly get you up and running with your new SRX340. We’ve
simplified and shortened the installation and configuration steps, and included how-to videos. You'll learn how to install
the SRX340 in a rack, power it up, and deploy it on your network using the CLI.
NOTE: We think you'll want to check out our Guided Setup: SRX300 Line Firewalls. Our Guided Setup picks
up where this Day One+ ends, providing step-by-step instructions on how to easily secure and validate your
branch location.
Are you interested in getting hands-on experience with the topics and operations covered in this guide? Visit
Juniper Networks Virtual Labs and reserve your free sandbox today! You’ll find the Junos Day One Experience
sandbox in the stand alone category.

Meet the SRX340
The Juniper Networks®SRX340 Firewall securely consolidates security, routing, switching, and WAN connectivity in a
compact 1-U chassis. It supports up to 3-Gbps firewall throughput and 600-Mbps IPsec VPN to meet the needs of midsize,
distributed- enterprise locations. Along with Juniper Sky™ Enterprise and Contrail Service Orchestration (CSO), the SRX340
delivers fully automated SD-WAN to both enterprises and service providers. A zero-touch provisioning (ZTP) feature
simplifies branch network connectivity for initial deployment and ongoing management.
The SRX340 has eight 1GbE RJ-45 ports, eight 1GbE SFP ports, one management port, one console port, and four
Mini-Physical Interface Module (Mini-PIM) slots. The RJ-45 and SFP ports are MACsec capable.
Install the SRX340 in a Rack
IN THIS SECTION
What’s in the Box? | 2
What Else Do I Need? | 2
Rack It | 3
What’s in the Box?
•SRX340 Firewall
•Power cord appropriate for your geographic location
•USB console cable
•Two mounting brackets
•Eight mounting screws to attach the mounting brackets to the SRX340
What Else Do I Need?
DB-9 to RJ-45 cable or a DB-9 to RJ-45 adapter with a CAT5E copper cable—We no longer include a DB-9 to RJ-45 cable
or a DB-9 to RJ-45 adapter with a CAT5E copper cable as part of the device package. If you require a console cable, you
can order it separately with the part number JNP-CBL-RJ45-DB9 (DB-9 to RJ-45 adapter with a CAT5E copper cable).
2

You’ll also need:
•Someone to help you do the installation
•Rack mount screws appropriate for your rack
•A number two Phillips (+) screwdriver
Rack It
Here’s how to install the SRX340 in a rack:
1. Review General Safety Guidelines and Warnings.
2. Wrap and fasten one end of the electrostatic discharge (ESD) grounding strap around your bare wrist, and connect the
other end to a site ESD point.
3. Attach the mounting brackets to the sides of the SRX340 using the eight mounting screws and the screwdriver.
Depending on how you’d like the SRX340 to sit in the rack, you can attach the mounting brackets to the front or center
mounting holes.
4. Lift the SRX340 and position it in the rack. Line up the bottom hole in each mounting bracket with a hole in each rack
rail, making sure that the SRX340 is level.
3

5. While you’re holding the SRX340 in place, have a second person insert and tighten the rack mount screws to secure
the mounting brackets to the rack. Make sure to tighten the screws in the two bottom holes first and then tighten the
screws in the two top holes.
6. Check that the mounting brackets on each side of the rack are level.
Power On
Now that you’ve installed your SRX340 in the rack, you’re ready to connect it to power.
1. Wrap and fasten one end of the electrostatic discharge (ESD) grounding strap around your bare wrist, and connect the
other end to a site ESD point.
2. Attach a grounding cable to earth ground, and then attach the other end to the grounding point on the side panel of
the SRX340.
4

3. Plug the power cord into the SRX340 rear panel.
g000958
4. If the AC power source outlet has a power switch, turn it off.
5. Plug the other end of the power cord into the AC power source outlet.
6. If the AC power source outlet has a power switch, turn it on.
The SRX340 powers up as soon as you connect it to power. When the PWR and STAT LEDs on the front panel are lit
solid green, the SRX340 is ready to use.
g000970
Step 2: Up and Running
IN THIS SECTION
SRX340 Provisioning Options | 6
Initial Configuration Using the CLI | 6
Now that the SRX340 is powered on, let’s do some initial configuration to get it up and running on the network.
NOTE: Be sure to check out our Guided Setup: SRX300 Line Firewalls. Our Guided Setup picks up where this
Day One+ leaves off, providing step-by-step instructions on how to easily secure and validate your branch
location.
5

SRX340 Provisioning Options
It’s simple to provision and manage the SRX340 and other devices on your network. You can choose the configuration
tool that’s right for you:
•Junos CLI commands. In this guide we show you how to configure the SRX340 with CLI commands that leverage the
plug and play factory defaults.
•J-Web, Juniper Networks Setup wizard that is preinstalled on the SRX340. For information on performing initial
configuration using the J-Web setup wizard see Configure SRX Devices Using the J-Web Setup Wizard in the J-Web
User Guide for SRX Series Devices.
•Juniper Sky™ Enterprise, Juniper Networks-hosted public cloud-based Software as a Service (SaaS) solution. You’ll need
to have a Juniper Sky Enterprise subscription service before you can use it to configure the SRX340. For more information,
check out the Juniper Sky Enterprise Getting Started Guide.
•Juniper Networks Contrail Service Orchestration (CSO). To use CSO, you’ll need an authentication code. See the Contrail
Service Orchestration (CSO ) Deployment Guide.
If you are using Junos OS Release 19.2 or earlier, you can use Juniper Networks Network Service Controller to configure
the SRX340 with ZTP. Network Service Controller is a component of CSO. See Configure the Device Using ZTP with
Juniper Networks Network Service Controller.
Initial Configuration Using the CLI
IN THIS SECTION
Connect to the Serial Console Port | 7
Perform Initial Configuration | 8
Congratulations! Your SRX is Up and Running | 9
You can use the console port on the SRX to do the initial configuration. This section assumes you start from a factory
default configuration. See SRX340 Firewall Hardware Guide for details on the SRX340 factory default configuration.
After you configure the SRX340, you can log in on a local LAN port, or remotely over the WAN interface, to manage and
configure the SRX using the CLI or J-Web.
We recommend that you use the ge-0/0/0 interface for WAN connectivity on the SRX340. By default, this interface is
set to receive its Internet access configuration from the service provider.
6

NOTE: This examples assumes you are using DHCP to configure the WAN interface. If the WAN provider does
not support DHCP, you’ll need to manually configure the WAN interface and related static routing. See Junos
Initial Configuration.
Have this information handy before you begin the initial configuration:
•Root password
•Hostname
Connect to the Serial Console Port
1. Plug one end of the Ethernet cable into the RJ-45 to DB-9 serial port adapter for your SRX340.
NOTE: We no longer include a DB-9 to RJ-45 cable or a DB-9 to RJ-45 adapter with a CAT5E copper cable
as part of the device package. If you require a console cable, you can order it separately with the part number
JNP-CBL-RJ45-DB9 (DB-9 to RJ-45 adapter with a CAT5E copper cable).
2. Plug the RJ-45 to DB-9 serial port adapter into the serial port on the management device.
3. Connect the other end of the Ethernet cable to the serial console port on the SRX340.
4. Start your asynchronous terminal emulation application (such as Microsoft Windows HyperTerminal) and select the
appropriate COM port to use (for example, COM1).
5. Verify that the serial port settings are set to the default:
•Baud rate—9600
•Parity—N
•Data bits—8
7

•Stop bits—1
•Flow control—none
NOTE: You can also connect to the SRX340 using a mini-USB console port. See the SRX340 Hardware Guide.
Perform Initial Configuration
1. Login as the root user and start the CLI. You don't need a password if you're running the factory default.
login: root
root@%cli
root>
NOTE: You can view the factory-default settings with the show configuration operational mode command.
2. Enter configuration mode.
root> configure
[edit]
root#
3. Since you're doing the initial configuration manually, you'll need to remove ZTP from the configuration. This stops the
periodic log messages that report on ZTP status.
Set the root authentication password and commit the change to deactivate ZTP.
[edit]
root# delete chassis auto-image-upgrade
root# delete system phone-home
root# set system root-authentication plain-text-password
New password: password
Retype new password: password
Issue the commit command to activate the candidate configuration that disables ZTP:
[edit]
root# commit
4. Enable root login over SSH, and allow SSH access over the WAN interface (ge-0/0/0).
8

[edit]
root# set system services ssh root-login allow
root# set security zones security-zone untrust interfaces ge-0/0/0.0 host-inbound-traffic system-services ssh
5. Configure the hostname.
[edit]
root# set system host-name host_name
6. That’s it! The initial configuration is complete. Commit the configuration to activate the changes on the SRX.
[edit]
root# commit
Congratulations! Your SRX is Up and Running
Your SRX340 is now online and providing secure Internet access to devices attached to the LAN ports. You can manage
the device locally and remotely, using the Junos CLI, J-Web, or a cloud based provisioning service. Here's what your
network looks like:
jn-000271
Sky Enterprise
Remote Management
Station
SRX340
(Factory Default
+ Initial CLI Config)
DHCP Clients
Internet
CSO
DHCP Server
UntrustTrust
ge-0/0/0
(DHCP Client)
SNAT
(DHCP Server
192.168.1.0/24)
Local Management
Station (Optional)
ge-0/0/1-14
A few things to keep in mind about your new SRX340 branch network:
•You access the SRX CLI or J-Web user interface locally using the 192.168.1.1 address. To access the SRX remotely,
specify the IP address assigned by the WAN provider. Simply issue a show interfaces ge-0/0/0 terse CLI command to
confirm the address in use by the WAN interface.
•The management interface is configured as a DHCP server for the 192.168.1.0/24 subnet.
9

•Devices attached to the LAN ports are configured to use DHCP. They receive their network configuration from the
SRX. These devices obtain an IP address from the 192.168.2.0/24 address pool and use the SRX as their default gateway.
•All LAN ports are in the same subnet with Layer 2 connectivity. All traffic is permitted between trust zone interfaces.
•All traffic originating in the trust zone is permitted in the untrust zone. Matching response traffic is allowed back from
the untrust to the trust zone. Traffic that originates from the untrust zone is blocked from the trust zone.
•The SRX performs source NAT (S-NAT) using the WAN interface’s IP for traffic sent to the WAN that originated from
the trust zone.
•Traffic associated with specific system services (HTTPS, DHCP, TFTP, and SSH) is permitted from the untrust zone to
the local host. All local host services and protocols are allowed for traffic that originates from the trust zone.
Step 3: Keep Going
IN THIS SECTION
What’s Next? | 11
General Information | 11
Learn With Videos | 12
Congratulations! Your SRX340 is configured and ready to go. Here are some things you can do next.
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