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Juniper SRX550-645AP-M Enterprise Services Gateway

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The Juniper SRX550-645AP-M is a high-performance enterprise services gateway designed for secure branch and mid-size network deployments. It delivers up to 5.5Gbps firewall throughput, integrated VPN acceleration, IPS security, modular I/O expansion, and scalable policy enforcement with Junos OS stability.

OVERVIEW

  • The Juniper SRX550-645AP-M is a branch-optimized enterprise services gateway designed to deliver high-performance firewalling, VPN security, and intrusion prevention for mid-sized business networks. Built on the SRX Series platform by Juniper Networks, it combines routing, security, and application control into a unified edge device.
  • With up to 5.5 Gbps firewall throughput, 800 Mbps IPS performance, and support for 375,000 concurrent sessions, it is engineered for secure digital branch transformation and WAN edge consolidation. The platform supports modular I/O expansion, enabling flexible deployment in evolving network environments.
  • This model is widely deployed in enterprise branch offices, distributed retail networks, financial institutions, and government field offices requiring secure connectivity to centralized data centers and hybrid cloud environments. Compared to lower SRX models, it offers higher session scalability, stronger VPN performance, and expanded interface flexibility, making it ideal for long lifecycle branch infrastructure investment.

USE CASES

  • Financial branch secure WAN connectivity to data centers
  • Government field office secure communications infrastructure
  • Healthcare branch data protection and compliance enforcement
  • SD-WAN edge security enforcement node
  • Remote site secure internet breakout gateway
  • Education campus branch network security
  • Managed service provider customer edge firewall deployment
  • Distributed enterprise hybrid cloud connectivity security layer

KEY FEATURES

  • 600,000 IP and 50,000 URL security intelligence entries
  • 6x 10/100/1000 BASE-T fixed Ethernet ports
  • 4x SFP fiber uplink interfaces
  • Modular expansion via SRX Mini-PIM and GPIM slots
  • Supports up to 40 PoE ports (optional configuration dependent)
  • Dual USB ports for management and operational use
  • 2 GB / 4 GB DRAM memory configuration support
  • Up to 8 GB internal compact flash storage
  • Built for branch and distributed enterprise security environments
  • Runs Junos OS with enterprise-grade stability and automation

TECHNICAL SPECIFICATIONS

  • Brand: Juniper 
  • Model: SRX550-645AP-M
  • Product Series: SRX550 Services Gateway
  • Product Type: Enterprise Services Gateway / Firewall
  • Operating System: Junos OS 12.1
  • Firewall Performance (Maximum): 5.5 Gbps
  • IPS Performance: 800 Mbps
  • VPN Performance: 1.0 Gbps (AES256+SHA-1 / 3DES+SHA-1)
  • Maximum Concurrent Sessions: 375,000
  • New Sessions per Second: 27,000 (Sustained TCP 3-Way)
  • Maximum Security Policies: 7,256
  • Security Intelligence Database Capacity: 600,000 IP Addresses and 50,000 URLs
  • Fixed Interfaces: 6 x 10/100/1000 BASE-T, 4 x SFP
  • I/O Expansion Slots: 2 x SRX Series Mini-PIM, 6 x GPIM or GPIM/XPIM Combinations
  • Routing Performance: 1000 Kpps
  • Concurrent VPN Tunnels: 2,000
  • Memory (DRAM): 4 GB
  • Memory Slots: 2 DIMM
  • Flash Memory: 8 GB CompactFlash (CF) Internal
  • USB Ports: 2
  • PoE Support: Up to 40 Ports of 802.3af/at (Maximum 247W)
  • Power Supply: 1 x AC Power Supply

WHY CHOOSE THIS PRODUCT?

  • Organizations choose the SRX550 when they need strong branch security without deploying data center-class complexity.
  • It provides a balanced mix of firewall, VPN, and IPS performance, making it suitable for secure WAN edge consolidation.
  • Its high concurrent session capacity ensures stability in user-heavy environments such as retail, banking, and enterprise branch offices.
  • Modular I/O design allows businesses to adapt connectivity as branch requirements evolve over time.
  • Compared to lower SRX300-class devices, it delivers significantly higher throughput and session handling capacity.

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