Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?


SRX300 Chassis

SRX300 Firewall Chassis Overview

The SRX300 Firewall chassis weighs 4.38 lb. and measures 1.37 in. high, 12.63 in. wide, and 7.52 in. deep.


Before removing or installing components of a functioning services gateway, attach an electrostatic discharge (ESD) strap to an ESD point and place the other end of the strap around your bare wrist. Failure to use an ESD strap could result in damage to the device.

The services gateway must be connected to earth ground during normal operation. The protective earthing terminal on the rear of the chassis is provided to connect the services gateway to ground.

Understanding the SRX300 Firewall Front Panel

Figure 1 shows the front panel of the SRX300 Firewall.

Figure 1: SRX300 Firewall Front PanelSRX300 Firewall Front Panel

Table 1 provides details about the front panel components.

Table 1: SRX300 Firewall Front Panel Components





Reset Config button

Returns the services gateway to the rescue configuration or the factory-default configuration.


Serial Console port

Connects a laptop to the services gateway for CLI management. The port uses an RJ-45 serial connection and supports the RS-232 (EIA-232) standard.


1-GbE Ethernet ports

Six LAN ports (0/0 to 0/5)

The ports have the following characteristics:

  • Use an RJ-45 connector

  • Operate in full-duplex and half-duplex modes

  • Support autonegotiation

The ports can be used to:

  • Function as front-end network ports

  • Provide LAN and WAN connectivity to hubs, switches, local servers, and workstations

  • Forward incoming data packets to the services gateway

  • Receive outgoing data packets from the services gateway


1-GbE small form-factor pluggable (SFP) ports

Two 1-GbE MACsec-capable SFP ports for network traffic.


ESD point

For personal safety, while working on the services gateway, use the ESD outlet to plug in an ESD grounding strap to prevent your body from sending static charges to the services gateway.


Mini-USB console port

Connects a laptop to the services gateway for CLI management through a USB interface. The port accepts a Mini-B type USB cable plug. A USB cable with Mini-B and Type A USB plugs is supplied with the services gateway.

To use the mini-USB console port, you must download a USB driver to the management device from the Downloads page at

To download the driver for Windows OS, select 6.5 from the Version drop-down list.

To download the driver for Mac OS, select 4.10 from the Version drop-down list.


USB port

The services gateway has one USB port that accepts a USB storage device.



Indicates component and system status at a glance.


Power button

Use the Power button to power on or power off the services gateway.

Figure 2 shows the LEDs on the front panel.

Figure 2: SRX300 Firewall Front Panel LEDsSRX300 Firewall Front Panel LEDs

Table 2 lists the front panel LEDs.

Table 2: SRX300 Firewall Front Panel LEDs




  • Solid amber (noncritical alarm)

  • Solid red (critical alarm)

  • Off (no alarms)


  • Solid green (operating normally)

  • Solid amber

    • Device is starting up

    • Committing rescue configuration

    • Committing clear configuration

  • Solid red (error detected)


  • Solid green (receiving power)

  • Solid red (power failure)

  • Off (no power)


  • Solid green (all HA links are available)

  • Solid amber (some HA links are unavailable)

  • Solid red (HA links are not functional)

  • Off (HA is disabled)

Network Port LEDs

The SFP and Ethernet ports have two status LEDs, LINK and ACT, located above the port.

Table 3: Network Port LEDs



LINK (LED on the left)

  • Solid green—There is link activity.

  • Off—There is no link established.

ACT (LED on the right)

  • Blinking green—There is activity on the 1 G link.

  • Off—There is no link activity.

Understanding the SRX300 Firewall Back Panel

Figure 3 shows the back panel of the SRX300 Firewall and Table 4 lists the back panel components.

Figure 3: SRX300 Firewall Back PanelSRX300 Firewall Back Panel
Table 4: SRX300 Firewall Back Panel Components





Grounding point

Connects the services gateway chassis to earth ground (optional).


We recommend connecting the services gateway to ground if required.



Provides the capability to lock and secure the device at the installation site.


Cable tie holder

Secures the DC power cord connection to the adapter.


Power supply input

Connects the services gateway to the external power supply.