Manufacturer | CISCO |
Product Name | Cisco Firepower 4125 NGFW Appliance |
Manufacturer Part Number | FPR4125-NGFW-K9 |
Product Type | Security Appliance |
Form Factor | Rack-mountable - 1U |
Rack Units | 1U |
Weight | 35.1 lb (15.92 kg) |
Power Requirements | AC 100-240 V (50 - 60 Hz) |
Power Device | Internal power supply - hot-plug |
Power Redundancy | Optional |
Power Provided | 1100 Watt |
Bundled Accessories | 2 x NetMod Bays |
Hard Drive Capacity | 800 GB |
Connectivity Technology | Wired |
Cisco Firepower 4125 NGFW Appliance, 1U, 2 x NetMod Bays

Key Benefits

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- Delivers high-speed threat inspection with up to 80 Gbps throughput, ideal for enterprise networks
- Modular expansion with 2 NetMod bays allows future-proofing and customization
- Advanced security features like clustering, IPS, and AVC ensure comprehensive protection
Product Overview
The Cisco Firepower 4125 NGFW Appliance is a high-capacity 1U rack-mountable firewall designed for enterprise-level networks demanding advanced throughput and security. It supports up to 45 Gbps multiprotocol throughput and 80 Gbps inspection throughput, along with two modular expansion bays. The appliance offers extensive network interface options with 8 x 10Gb SFP+ and 4 x 40Gb QSFP+ ports, while features like VLAN support, AVC, IPS, DDoS protection, and clustering assure robust and flexible performance. Built with optional power redundancy and enterprise-grade compliance certifications, it is ideal for mission-critical deployments.
Specifications
Product Overview
Wireless Features
Compliance & Origin
Country of Origin | Brazil / Mexico |
TAA Compliant | Yes |
Compliant Standards | CISPR 22 Class A, CISPR 24, EN 61000-3-2, EN 61000-3-3, EN55024, AS/NZS 60950-1, ICES-003 Class A, UL 60950-1, IEC 60950-1, EN 60950-1, GB 4943, VCCI Class A, KN24, KN22 Class A, AS/NZS CISPR22:2004 Class A, EN 55022 Class A, FCC CFR47 Part 15 B Class A, CNS 13438 Class A, EN 300 386, TVCN 7317, CAN/CSA-C22.2 No. 60950-1 |
Advanced Security Features
Firewall Type | Next-Generation Firewall (NGFW) |
Application Visibility and Control (AVC) | Yes |
URL Filtering | Yes |
Intrusion Prevention System (IPS) | Yes |
DDoS Protection | Yes |
Clustering Technology | Yes |
Capacity
New Connections per Second | 265,000 |
Maximum Concurrent Sessions | 25,000,000 |
Security Contexts | 250 |
Latency | 3.5 microseconds |
Interfaces
10Gb Ethernet Ports | 8 x SFP+ |
40Gb Ethernet Ports | 4 x QSFP+ |
Management Port | 1 x 1000Base-T (SFP mini-GBIC) |
Serial Console Port | 1 x RJ-45 |
USB Ports | 1 x USB 2.0 Type A |
Expansion Slots | 2 (total) / 0 (free) |
Physical & Environmental
Dimensions (W x D x H) | 16.9 in x 29.7 in x 1.7 in |
Minimum Operating Temperature | 32 °F (0 °C) |
Maximum Operating Temperature | 104 °F (40 °C) |
Operating Humidity Range | 5 - 95% (non-condensing) |
Cooling | 6 fans |
Cloud Management & Licensing
Management Interface | Cisco Firepower Management Center (FMC) |
Cloud Support | Cisco Defense Orchestrator (CDO) optional |
Licensing Model | Subscription-based for threat, malware, URL filtering, and support |
Performance
AVC Throughput (1024B) | 40 Gbps |
AVC + IPS Throughput (1024B) | 35 Gbps |
AVC Throughput (450B) | 13 Gbps |
AVC + IPS Throughput (450B) | 9 Gbps |
NGFW Throughput | 35 Gbps |
Multiprotocol Firewall Throughput | 45 Gbps |
Inspection Throughput | 80 Gbps |
IPSec VPN Throughput (1024B TCP Fastpath) | 14 Gbps |
IPSec VPN Throughput (450B UDP) | 19 Gbps |
NGIPS Throughput (450B) | 15 Gbps |