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SRX4120 Overview

Learn about the hardware features and benefits of the SRX4120 Firewall.

Meet the SRX4120

The SRX4120 Firewall is a midrange firewall that consolidates networking and security features. It is a next-generation firewall that is designed to cater to your current network needs and is scalable to meet future demands. It provides capabilities including Application ID (AppID), User Firewall (UserFW), intrusion prevention system (IPS), and Content Security. It also provides advanced threat detection and mitigation capabilities through Juniper® Advanced Threat Protection Cloud (Juniper ATP Cloud).

The SRX4120 is ideal for small to medium enterprise edge, campus edge, data center edge firewall, and secure VPN router deployments for distributed enterprise use-cases.

Table 1: SRX4120 Description

SRX4120 Firewall

Form factor

 1 U

Chassis type

Fixed configuration

Operating system

Junos OS

Power system variants

AC and DC

Cooling system variants

Only AFO

Port configuration

  • Eight 1/2.5/5/10 Gigabit-Ethernet (GbE) BASE-T ports

  • Eight 1/10 GbE SFP+ ports

  • Four 1/10/25 GbE SFP28 ports

  • Two 4x10/4x25/2x50/40/100 GbE QSFP28 ports

  • Two 1 GbE SFP High Availability ports

All ports are Media Access Control Security (MACsec) capable ports.

Storage

Two 120 GB SSDs

Memory

32 GB

Managed using

  • Juniper® Mist

  • Juniper® Security Director Cloud

  • Juniper® Security Director On-Premise

  • J-Web

  • Junos OS CLI

Where Can You Use the SRX4120?

The SRX4120 is part of Juniper's AI-native security solutions and facilitates seamless transitioning from an on-premises to a cloud environment. With zero trust principles and EVPN-VXLAN support, the SRX4120 integrates into the network fabric to secure and protect your network from external threats and potential vulnerabilities.

Here are some possible use-cases for the SRX4120:

  • Enterprise/Campus Edge Firewall—The next-generation firewall capabilities of the SRX4120 help to secure your small to medium enterprise or campus networks. Advanced security features such as Content Security and IPS protect your network.

  • Data Center Firewall—At the data center edge, the SRX4120 allows secure access to the data center servers. At the core, the SRX4120 maintains control over the traffic flowing between different parts of the data center. Threat mitigation and detection, IPS, high availability, and EVPN-VXLAN support enable the SRX4120 to secure your data center.

  • Secure VPN Router—In large distributed enterprises, the SRX4120 uses IPsec VPN to simplify the hub-and-spoke deployment. Routing protocols transfer routing information over the IPsec tunnels. The SRX4120 also supports SD-WAN use cases.

Why Upgrade to the SRX4120?

The SRX4120 enhances the capabilities of the SRX4100.

Table 2: Compare the SRX4120 and SRX4100
Category Feature SRX4120 SRX4100

Physical specifications

Dimensions (HxWxD)

1.74 x 17.28 x 18.2 in.

1.7 x 17.48 x 25 in.

Weight

With 1 PSU: 17.1 lb

With 2 PSUs: 19.12 lb

With 2 AC PSUs: 29 lb

With 2 DC PSUs: 28.9 lb

Port configuration

Ports

  • Eight 1/2.5/5/10 GbE BASE-T ports

  • Eight 1/10 GbE SFP+ ports

  • Four 1/10/25 GbE SFP28 ports

  • Two 4x10/4x25/2x50/40/100 GbE QSFP28 ports

Eight 1/10 GbE SFP ports

High availability ports

 Two 1 GbE SFP ports Two 1/10 GbE SFP+ ports
MACsec capability

Supported on all network ports

-

Management

Juniper® Mist WAN Assurance

Yes

-

Juniper® Security Director

Yes

Yes

Performance

Firewall throughput

IMIX: 28 Gbps

1518B: 39 Gbps

IMIX: 25 Gbps

1518B: 40 Gbps

IPsec VPN throughput

IMIX: 18 Gbps

1400B: 36 Gbps

IMIX: 13 Gbps

1400B: 17.5 Gbps

For the complete performance data, see the SRX4120 and SRX4100 datasheets.

For a detailed list of features available on both devices, see Feature Explorer.

For a comparison of hardware features, see Hardware Compatibility Tool.