Manufacturer | Cisco |
Product Name | Cisco Firepower 4125 ASA Appliance |
Manufacturer Part Number | FPR4125-ASA-K9 |
UPC | 889728223362 |
Device Type | Security appliance |
Form Factor | Rack-mountable - 1U |
Height (Rack Units) | 1U |
Hard Drive Capacity | 800 GB |
Power Requirements | AC 120/230 V (50 - 60 Hz) |
Power Provided | 1100 Watt |
Power Redundancy | Optional |
Power Device | Internal power supply - hot-plug |
Bundled Components | 2 x NetMod Bays |
Connectivity Technology | Wired |
Max Supported Power Supplies | 2 |
Cisco Firepower 4125 ASA Appliance, 1U, 2 x NetMod Bays

Key Benefits

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- Designed for enterprise-scale scalability with support for 200,000 new connections/sec and 15 million concurrent sessions
- Modular platform with 2 NetMod bays, 8x10Gb SFP+ ports enabling flexible deployments and upgrades
- Maximum firewall throughput of 40 Gbps meets the demands of high-traffic, latency-sensitive environments
Product Overview
The Cisco Firepower 4125 ASA Appliance is engineered for high-end enterprise-level security with a focus on performance, scalability, and visibility. Housed in a compact 1U rack-mountable chassis, this appliance features two NetMod expansion bays for flexible port configuration. Designed for powerful traffic inspection, the unit delivers a maximum throughput of 40 Gbps for firewall with AVC and up to 35 Gbps with full threat protection including IDS/IPS services. It supports up to 200,000 new connections per second and 15 million concurrent connections, making it ideal for high-demand environments such as data centers or large campuses.
Connectivity is optimized through eight 10Gb SFP+ Ethernet interfaces, one management port, and additional USB and RJ-45 interfaces. Its support for VLANs, clustering, high availability, and application visibility helps enhance resiliency and control. With optional power redundancy and internal hot-plug power supplies rated at 1100W, the system maintains critical uptime while operating within a wide environmental tolerance (32 – 104 °F, 5–95% humidity). Certified to meet a wide range of international standards, the Firepower 4125 ASA complies with TAA and is suitable for government and regulated industries requiring compliance.
Specifications
Product Overview
Physical & Environmental
Width | 16.9 in |
Depth | 29.7 in |
Height | 1.7 in |
Min Operating Temperature | 32 °F |
Max Operating Temperature | 104 °F |
Operating Humidity Range | 5 - 95% (non-condensing) |
Cloud Management & Licensing
High Availability Support | Yes |
Clustering Support | Yes |
Management Interface | Cisco Firepower Management Center (FMC) |
Interfaces
10Gb Ethernet Ports (SFP+) | 8 |
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) |
Data Transfer Rate - NGIPS (1024B) | 41 Gbps |
Data Transfer Rate - NGIPS (450B) | 15 Gbps |
Data Transfer Rate - IPSec VPN | 14 Gbps |
Firewall Throughput FW + AVC (1024B) | 40 Gbps |
Firewall Throughput FW + AVC + IPS (1024B) | 35 Gbps |
Firewall Throughput FW + AVC (450B) | 13 Gbps |
Firewall Throughput FW + AVC + IPS (450B) | 9 Gbps |
Compliance & Origin
Country of Origin | Brazil / Mexico |
TAA Compliance | Yes |
Compliance 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, FCC CFR47 Part 15 B Class A, and others |
Advanced Security Features
Application Visibility and Control (AVC) | Yes |
URL Filtering | Yes |
DDoS Protection | Yes |
VLAN Support | Yes |
Maximum Concurrent Connections | 15,000,000 |
New Connections per Second | 200,000 |