SRX4100 Firewall

The SRX4100 Firewall is a high-performance, next-generation firewall (NGFW) that protects small and midsized enterprise campus, data center, and regional headquarters networks. It’s an integral part of the Juniper Connected Security portfolio, which extends security to every connection point on the network to safeguard users, data, and infrastructure against advanced threats.

The SRX4100 integrates networking and security into a single platform that provides high-performance, scalable intrusion detection/prevention and dynamically protects against malware. Centrally managed by Juniper Security Director Cloud software, it delivers IPsec VPN, fully automated SD-WAN, and easy policy management capabilities for reliable network security.

Key Features

Firewall performance (max)

40 Gbps

IPS performance

13.9 Gbps

VPN performance

14.8 Gbps

Maximum concurrent sessions

5 million

Features + Benefits

Advanced Threat Prevention

Dynamic threat protection with Juniper Advanced Threat Prevention (ATP), including malware sandboxing, threat intelligence feeds, and Encrypted Traffic Insights to detect malware hidden in SSL-encrypted traffic.

Next-Generation Firewall

Detect and mitigate threats using software-enabled NGFW features, including an intrusion prevention system (IPS), application security (AppSecure), user identity services, and role-based access control (RBAC). For content security, the firewall supports integrated network antivirus, antispam, and enhanced web filtering capabilities.

Secure SD-WAN

Unify control of WAN connections across multiple network interfaces while managing and securing MPLS, Internet broadband, and 4G LTE and 5G links.


EVPN-VXLAN (EVPN Type 5 route) configuration supported across all Juniper SRX Series Firewalls embeds security across the entire EVPN-VXLAN fabric, everywhere your workloads are.

AI-Predictive Threat Prevention

AI-Predictive Threat Prevention feature keeps known and zero-day threats off the network at line rate for the entire attack lifecycle—not just for 24 hours—helping your network stay safe from initial and subsequent attacks.

Juniper Secure Connect

Our highly flexible SSL VPN and IPsec application provides remote employees with dynamic, adaptive, and secure VPN access to corporate and cloud resources.

On/Off-Box Automation

On/off-box capabilities enable the automatic, remote configuration of network and security policies and settings on SRX firewalls. These automated features combine with centralized network security management to simplify IT operations.

VPN to Public Cloud

The SRX4100 works with the Juniper vSRX Virtual Firewall on Amazon Web Services (AWS) to enable secure VPN connectivity to the public cloud.

99.9% Security Effectiveness

Juniper received an “AAA” rating in CyberRatings’ 2023 Enterprise Network Firewall Report, demonstrating a 99.9% exploit block rate with zero false positives.

Read report


Syntrio delivers fast, secure digital services with Texas friendliness

Santa Rosa Communications first brought phone service to Texas farmers and ranchers in the 1950s. With two acquisitions of wireless companies, Pinnacle Network Solutions, and managed service provider, PCnet, the company exemplifies innovation. Still locally owned and operated, but now called Syntrio, the company serves the digital needs of homes and businesses across North Texas and Southern Oklahoma.

The area, known as Texoma, is attracting residents from the Dallas-Fort Worth area and new businesses. Syntrio, which relies on Juniper Networks® from customer premises to core, is primed for growth.

Syntrio Image

SRX Series Firewalls

See how the SRX4100 compares to other SRX products.
srx4100 front with top


SRX4100 is a high-performance, low-latency, next-generation firewall for small and mid-sized enterprise campuses and data centers, and regional headquarters.

Technical Features
Firewall performance (max)

40 Gbps

IPS performance

13.9 Gbps

VPN performance

14.8 Gbps

Maximum concurrent sessions

5 million

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srx4200 front with top


SRX4200 is a high-performance, low-latency, next-generation firewall for small and midsized enterprise campuses and data centers, and regional headquarters.

Technical Features
Firewall performance (max)

80 Gbps

IPS performance

27.7 Gbps

VPN performance

29.6 Gbps

Maximum concurrent sessions

10 million

Want to see every SRX product?

Discover 283% ROI with Juniper Connected Security

Check out the recent Forrester Total Economic Impact™ of Juniper Connected Security report to learn more.

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Find SRX4100 in these solutions


Make your network threat aware. The Juniper Connected Security portfolio safeguards users, data, and infrastructure by extending security to every point of connection, from client to cloud, across the entire network.

AI-Driven SD-WAN

Enrich user experiences across the WAN with AI-driven insight, automation, action, and native security.

Next-Generation Firewall

Juniper next-generation firewalls reduce the risk of attack and provide granular control of data, users, and devices through identity-based policies, microsegmentation, VPN connectivity, and validated threat prevention.

Public Cloud Security

Accelerate public cloud adoption securely with simple deployment, consistent security, and unified management experience at every level: within workloads, between applications and instances, and across environments.

Zero Trust Data Center Security

Juniper Zero Trust Data Center Security protects your distributed centers of data by operationalizing security and extending zero trust across networks to prevent threats with proven efficacy. With unified management, context-driven network-wide visibility, and a single policy framework, Juniper safeguards users, data, and infrastructure across hybrid environments.