Frequently Asked Questions

Learn about SRX1600, SRX4120, and SRX4300 Firewalls commonly asked questions with their answers.

• Q1: What key features do SRX1600, SRX4120, and SRX4300 Firewalls support?

  A1: See Feature Explorer.

• Q2: What interfaces do SRX1600, SRX4120, and SRX4300 Firewalls support?

  A2: See Port Speed on SRX Series Firewalls.

• Q3: Do SRX1600, SRX4120, and SRX4300 Firewalls support MNHA?

  A3: Yes. See Multinode High Availability.

• Q4: Do SRX1600, SRX4120, and SRX4300 Firewalls support Inline NAT?

  A4: Yes, these firewalls support Inline NAT.

• Q5: Are all ports of SRX1600, SRX4120, and SRX4300 Firewalls MACsec-capable?

  A5: Yes, these firewalls support MACsec as follows:

  • SRX1600: Only small form-factor Pluggable (SFP) and high availability (HA) ports are MACsec-capable.
  • SRX4120: All ports, including HA ports, are MACsec-capable.
  • SRX4300: All ports, including HA ports, are MACsec-capable.

• Q6: How quickly must I replace a failed Power Supply Unit (PSU) or fan module?

  A6: Replace PSU within 5 minutes to maintain power. See:

  • SRX1600 Power Supply Maintenance

  • Replace Power Supply Units on the SRX4120

  • SRX4300 Power Supply Maintenance

• Q7: How to extend hardware life of firewalls?

  A7: Best Practices to Extend Hardware Life of SRX Devices.