SRX4100 and SRX4200 Firewalls Datasheet

Product Overview

Juniper’s SRX4100 and SRX4200 firewalls offer industry-leading threat protection, performance, scalability, high availability, and integrated security services. Designed for high-performance throughput while preventing exploits, malware, and malicious traffic, the SRX4100 and SRX4200 are best suited for enterprise data centers, campuses, and regional headquarters focused on adopting a Zero Trust architecture.

The SRX4100 and SRX4200 seamlessly integrate networking and security in a single-platform, fixed-form-factor firewall. Both firewalls are powered by Junos^® operating system (Junos OS) and managed by Security Director Cloud, which helps organizations operationalize Zero Trust and enable architectural transformation through a unified management experience and single-policy framework.

Product Description

The Juniper Networks^® SRX4100 and SRX4200 are high‑performance, next‑generation firewalls (NGFWs) with hardware acceleration that protect mission‑critical data center networks, enterprise campuses, and regional headquarters. The SRX4100 and SRX4200 are an integral part of the Juniper Connected Security framework that extends security to every point of connection on the network to safeguard users, data, and the infrastructure from advanced threats.

The SRX4100 and SRX4200 integrate networking and security in a single platform to deliver industry‑leading intrusion prevention and malware protection with high‑performance throughput, IPSec VPN, and easy policy management to secure the network reliably. Advanced application identification and classification enables greater visibility, enforcement, control, and protection over network traffic, application access, and data. These NGFWs provide detailed analyses of application volume and usage, fine‑grained application control policies, and traffic prioritization based on application information and context to reduce complexity across traditional, cloud, and hybrid IT networks.

The SRX4100 and SRX4200 firewalls deliver full automation to both enterprises and service providers. Their high performance and scale allow the SRX4100 and SRX4200 to act as VPN hubs, terminating VPN/secure overlay connections in various SD‑WAN topologies.

Both SRX4100 and SRX4200 firewalls are managed by Juniper Security Director Cloud, a unified management experience that connects the organization’s current deployments with future architectural rollouts. Security Director Cloud uses a single‑policy framework enabling consistent security policies across any environment while expanding Zero Trust to all parts of the network, from the edge into the data center. This provides unbroken visibility, policy configuration, administration, and collective threat intelligence all in one place. The SRX4100 and SRX4200 comply with industry standards, delivering the scalability, ease of management, secure connectivity, and advanced threat mitigation capabilities that businesses need.

Architecture and Key Components

The SRX4100 and SRX4200 hardware and software architecture provides cost‑effective security performance in a small 1RU form factor. These firewalls incorporate multiple security services and networking functions on top of Juniper’s industry‑leading Junos OS.

The SRX4100 and SRX4200 recognize more than 4,800 applications and nested applications in plain-text or SSL-encrypted transactions. The firewalls also integrate with Microsoft Active Directory and combine user information with application data to provide network-wide application and user visibility and control.

Features and Benefits

Table 1. SRX4100 and SRX4200 features and benefits

Business Requirement	Feature/Solution	SRX4100/SRX4200 Advantages
High performance	High-performance firewall	Best suited for enterprise campus and data center edge deployments Ideal for next-generation firewall deployments at the head office Scalability and feature capacity meet future needs
High-quality end user experience	Application visibility and control	Continuous application updates provided by Juniper Threat Labs Controls and prioritizes traffic based on application and use role Inspects and detects applications inside SSL-encrypted traffic
Advanced threat protection	IPS, antivirus, antispam, enhanced web filtering, Juniper Advanced Threat Prevention Cloud sandboxing, Encrypted Traffic Insights, and SecIntel Threat Intelligence feeds	Provides IPS capabilities and real-time updates to signatures that effectively protect against exploits, proven most effective in the industry for the past five years confirmed by multiple third-party testing companies Protects against malware and malicious web traffic Delivers an open threat intelligence platform that provides a single point for all operational intelligence feeds Protects against zero-day attacks Stops rogue and compromised devices from disseminating malware Restores visibility lost due to encryption without the heavy burden of full TLS/SSL decryption
Zero-day prevention	AI-Predictive Threat Prevention	Predicts and prevents malware at line rate by using AI to identify threats from packet snippets effectively Eliminates patient-zero infections Provides network protection throughout the entire attack lifecycle, preventing reinfection from subsequent attacks, rather than just for the first 24 hours of an attack
Advanced networking services	Routing, secure wire	Supports carrier-class advanced routing and quality of service (QoS)
Highly secure	IPsec VPN, Remote Access/SSL VPN	Provides high-performance IPsec VPN with a dedicated crypto engine Offers diverse VPN options for various network designs, including remote access and dynamic site-to-site communications Simplifies large VPN deployments with auto VPN Includes hardware-based crypto acceleration Secure and flexible remote access SSL VPN with Juniper Secure Connect
Embedded security in data center fabric	EVPN-VXLAN Type 5 routes	Enhances tunnel inspection for VXLAN encapsulated traffic with Layer 4 to Layer 7 security services Eases operations with Type 5 support through BGP Does not require decapsulation of EVPN-VXLAN traffic
Highly reliable	Chassis cluster, redundant power supplies	Provides stateful configuration and session state synchronization Supports active/active and active/backup deployment scenarios Offers highly available hardware with redundant power supply unit (PSU) and redundant fans Delivers dedicated control and fabric link with seamless high availability
Easy to manage and scale	On-box GUI, Juniper Security Director Cloud	Enables centralized management from Juniper’s unified management experience with unbroken visibility, Zero‑Touch Provisioning, intelligent firewall policy management and scalability, Network Address Translation (NAT), and IPsec VPN deployments Includes simple, easy-to-use on-box GUI for local management
Low TCO	Junos OS	Integrates routing and security in a single device Reduces OpEx with Junos OS automation capabilities

SRX4100 and SRX4200 Firewall Specifications

Software Specifications

Firewall Services

Stateful firewall services
Zone-based firewall
Screens and distributed denial of service (DDoS) protection
Protection from protocol and traffic anomalies
Unified Access Control (UAC)

Network Address Translation (NAT)

Source NAT with Port Address Translation (PAT)
Bidirectional 1:1 static NAT
Destination NAT with PAT
Persistent NAT
IPv6 address translation

VPN Features

Tunnels: Site-to-site, hub and spoke, dynamic endpoint, AutoVPN, ADVPN, Group VPN (IPv4/ IPv6/Dual Stack)
Juniper Secure Connect: Remote access/SSL VPN
Configuration payload: Yes
IKE Encryption algorithms: Prime, DES-CBC, 3DES-CBC, AEC-CBC, AES-GCM, Suite B
IKE authentication algorithms: MD5, SHA-1, SHA-128, SHA-256, SHA-384
Authentication: Pre-shared key and public key infrastructure (PKI) (X.509)
IPsec: Authentication Header (AH)/Encapsulating Security Payload (ESP) protocol
IPsec Authentication Algorithms: hmac-md5, hmac-sha-196, hmac-sha-256
IPsec Encryption Algorithms: Prime, DES-CBC, 3DES-CBC, AEC-CBC, AES-GCM, Suite B
Perfect forward secrecy, anti-reply
Internet Key Exchange: IKEv1, IKEv2
Monitoring: Standard-based dead peer detection (DPD) support, VPN monitoring
VPNs GRE, IP-in-IP, and MPLS

High Availability Features

Virtual Router Redundancy Protocol (VRRP) – IPv4 and IPv6
Stateful high availability:
- Dual box clustering
- Active/passive
- Active/active
- Configuration synchronization
- Firewall session synchronization
- Device/link detection
- In-Service Software Upgrade (ISSU)
- Multi-Node HA (MNHA)
IP monitoring with route and interface failover

Application Security Services¹

Application visibility and control
Application QoS
Advanced/application policy-based routing (APBR)
Application Quality of Experience (AppQoE)
Application-based multipath routing
User-based firewall

Threat Defense and Intelligence Services¹

Intrusion prevention system
Antivirus
Antispam
Category/reputation-based URL filtering
SSL proxy/inspection
Protection from botnets (command and control)
Adaptive enforcement based on GeoIP
Juniper Advanced Threat Prevention, a cloud-based SaaS offering, to detect and block zero-day attacks
Adaptive Threat Profiling
Encrypted Traffic Insights
SecIntel threat intelligence
Juniper ATP Virtual Appliance, a distributed, on-premises advanced threat prevention solution to detect and block zero-day attacks
AI-Predictive Threat Prevention

¹Offered as advanced security subscription license.

Routing Protocols

IPv4, IPv6, static routes, RIP v1/v2
OSPF/OSPF v3
BGP with route reflector
EVPN-VXLAN
IS-IS
Multicast: Internet Group Management Protocol (IGMP) v1/v2, Protocol Independent Multicast (PIM) sparse mode (SM)/ source‑specific multicast (SSM), Session Description Protocol (SDP), Distance Vector Multicast Routing Protocol (DVMRP), Multicast Source Discovery Protocol (MSDP); reverse path forwarding (RPF)
Encapsulation: VLAN, Point-to-Point Protocol over Ethernet (PPPoE)
Virtual routers
Policy-based routing, source-based routing
Equal-cost multipath (ECMP)

QoS Features

Support for 802.1p, DiffServ code point (DSCP), EXP
Classification based on VLAN, data-link connection identifier (DLCI), interface, bundles, or multifield filters
Marking, policing, and shaping
Classification and scheduling
Weighted random early detection (WRED)
Guaranteed and maximum bandwidth
Ingress traffic policing
Virtual channels

Network Services

Dynamic Host Configuration Protocol (DHCP) client/server/relay
Domain Name System (DNS) proxy, dynamic DNS (DDNS)
Juniper real-time performance monitoring (RPM) and IP monitoring
Juniper flow monitoring (J-Flow)

Advanced Routing Services

Packet Mode
MPLS (RSVP, LDP)
Circuit cross-connect (CCC), translational cross-connect (TCC)
L2/L2 MPLS VPN, pseudo-wires
Virtual private LAN service (VPLS), next-generation multicast VPN (NG-MVPN)
MPLS traffic engineering and MPLS fast re-route

Management, Automation, Logging, and Reporting

SSH, Telnet, SNMP
Smart image download
Juniper CLI and Web UI
Juniper Security Director Cloud
Python
Junos events, commit and OP scripts
Application and bandwidth usage reporting
Debug and troubleshooting tools

Hardware Specifications

Table 2. SRX4100 and SRX4200 hardware specifications

Specifications	SRX4100	SRX4200
Connectivity
Total onboard ports	8x1GbE/10GbE	8x1GbE/10GbE
Onboard small form-factor pluggable plus (SFP+) transceiver ports	8x1GbE/10GbE	8x1GbE/10GbE
Out-of-Band (OOB) management ports	1x1GbE	1x1GbE
Dedicated high availability (HA) ports	2x1GbE/10GbE (SFP/SFP+)	2x1GbE/10GbE (SFP/SFP+)
Console (RJ-45)	1	1
USB 2.0 ports (type A)	2	2
Memory and storage
System memory (RAM)	64 GB	64 GB
Secondary storage (SSD)	240 GB with 1+1 RAID	240 GB with 1+1 RAID
Dimensions and power
Form factor	1 U	1 U
Size (WxHxD)	17.48 x 1.7 x 25 in (44.39 x 4.31 x 63.5 cm)	17.48 x 1.7 x 25 in (44.39 x 4.31 x 63.5 cm)
Weight (device and PSU)	Chassis with two AC power supplies: 29 lb (13.15 kg) Chassis with two DC power supplies: 28.9 lb (13.06 kg) Chassis with package for shipping: 47.5 lb (21.54 kg)	Chassis with two AC power supplies: 29 lb (13.15 kg) Chassis with two DC power supplies: 28.9 lb (13.06 kg) Chassis with package for shipping: 47.5 lb (21.54 kg)
Redundant PSU	1+1	1+1
Power supply	2x 650 W redundant AC-DC/DC-DC PSU	2x 650 W redundant AC-DC/DC-DC PSU
Average power consumption	200 W	200 W
Average heat dissipation	685 BTU / hour	685 BTU / hour
Maximum current consumption	4A (for 110 V AC power) 2A (for 220 V AC power) 9A (for -48 V DC power)	4A (for 110 V AC power) 2A (for 220 V AC power) 9A (for -48 V DC power)
Maximum inrush current	50 A by 1 AC cycle	50 A by 1 AC cycle
Environmental and regulatory compliance
Acoustic noise level	70 dBA	70 dBA
Airflow/cooling	Front to back	Front to back
Operating temperature	32° to 104° F (0° to 40° C)	32° to 104° F (0° to 40° C)
Operating humidity	5% to 90% noncondensing	5% to 90% noncondensing
Meantime between failures (MTBF)	221,729 hours (about 25.3 years)	221,729 hours (about 25.3 years)
FCC classification	Class A	Class A
RoHS compliance	RoHS 2	RoHS 2
Performance and scale
Firewall throughput (IMIX) throughput Gbps²	25	50
Firewall throughput (1,518 B) Gbps²	40	80
IPsec VPN throughput (IMIX) Gbps²	13	26
IPsec VPN throughput (1400B)²	17.5	35
Application security performance (TPS#/CPS**) in Gbps	35/16	70/32.5
Next-generation firewall (TPS#/CPS**) in Gbps³	30/8	60/16
Secure Web Access firewall (CPS**) in Gbps⁴	7	14.5
Advanced Threat (CPS)⁵	3.5	7.5
Connections per second (64B)	275,000	550,000
SSL connections per second	6,000	12,000
Maximum concurrent sessions (IPv4 or IPv6)	5 million	10 million
Route table size (RIB/FIB) (IPv4)	2 million/1.2 million	2 million/1.2 million
IPsec VPN tunnels	4,075	4,075

²Throughput numbers based on UDP packets and RFC2544 test methodology
³Next-generation firewall performance was measured with firewall, application security, and IPS enabled
⁴Secure Web Access Firewall performance is measured with Firewall, Application Security, IPS, SecIntel, and URL Filtering enabled
⁵Advanced Threat performance is measured with Firewall, Application Security, IPS, SecIntel, URL Filtering, and Malware Protection enabled
##TPS Method: Throughput performance of average HTTP sessions
**CPS Method: Short-lived sessions

Juniper Mist WAN Assurance and AI-Native Operations

Alternatively, the SRX4100 and SRX4200 firewalls can be operated and orchestrated through the Juniper Mist Cloud. Mist AI delivers unprecedented automation using a combination of artificial intelligence, machine learning algorithms, and data science techniques to save time, maximize IT productivity, and deliver the best experience to digital users.

Juniper Mist WAN Assurance is built on the Juniper Mist Cloud and delivers full life cycle management and operations, including AI‑Native insights, automated speed tests, dynamic packet capture (dPCAP), anomaly detection, and root cause identification that focuses on end users’ experience. For Day 0 and Day 1 operations, WAN Assurance also provides orchestration, administration, and ZTP for SRX4100 and SRX4200. See the WAN Assurance datasheet for more information.

Juniper Networks Services and Support

Juniper Networks is the leader in performance-enabling services designed to accelerate, extend, and optimize your high-performance network. Our services allow you to maximize operational efficiency while reducing costs and minimizing risk, achieving a faster time to value. Juniper Networks ensures operational excellence by optimizing the network to maintain required levels of performance, reliability, and availability. For more details, please visit https://www.juniper.net/us/en/products.html.

Ordering Information

To order Juniper Networks SRX Series Firewalls, and to access software licensing information, please visit the How to Buy page at https://www.juniper.net/us/en/how-to-buy/form.html.

About Juniper Networks

Juniper Networks believes that connectivity is not the same as experiencing a great connection. Juniper's AI-Native Networking Platform is built from the ground up to leverage AI to deliver exceptional, highly secure, and sustainable user experiences from the edge to the data center and cloud. Additional information can be found at juniper.net or connect with Juniper on X (formerly Twitter), LinkedIn, and Facebook.

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