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ISR4431 SEC K9 Integrated Services Router for Threat-Protected Branches
Product Overview The Cisco ISR4431-SEC/K9 is a security-optimized integrated services router designed for medium-to-large enterprise branches, combining high-performance routing with advanced security features. As part of the Cisco ISR 4000 Series, it supports up to 1 Gbps throughput with scalable licensing and includes the Security (SEC) technology package, enabling built-in support for IPsec VPN, firewall, threat defense, and application control. It’s SD-WAN ready and ideal for secure WAN edge deployments.
Product Details
Specification
Description
Product Code
ISR4431-SEC/K9
Series
Cisco ISR 4000 Series
Form Factor
1RU Rack-Mountable
Default Throughput
500 Mbps (boostable up to 1 Gbps via license)
Processor
Cisco QuantumFlow Processor
System Memory (DRAM)
4 GB (expandable to 16 GB)
Flash Storage
8 GB (expandable to 32 GB)
Integrated Interfaces
3 x 1G RJ45 + 1 x 1G SFP
NIM Slots
2
SM-X Slots
1
Voice Support
Optional with additional licensing
Security Package Included
Yes (SEC license pre-installed)
Redundant Power Supply
Optional external RPS support
Software
Cisco IOS XE with SD-WAN and Security features
Virtualization
Supports KVM, UCS-E, and containerized applications
Product Features
Includes SEC technology license for IPsec VPN, ZBFW, and advanced packet inspection
Performance-on-demand licensing scales throughput from 500 Mbps to 1 Gbps
SD-WAN ready, supporting application-aware routing and centralized control
Cisco IOS XE provides programmability, automation, and cloud readiness
Supports application visibility and control (AVC) with QoS and NetFlow
Optional voice services via DSP modules and Unified Communications license
Ideal for secure branch edge, cloud access, and MPLS WAN environments
Similar Models Comparison
Model
Security License
Max Throughput
NIM Slots
SD-WAN
Form Factor
Ideal Use Case
ISR4451-X-SEC/K9
Yes
2 Gbps
3
Yes
2RU
Large secure branches
ISR4431-SEC/K9
Yes
1 Gbps
2
Yes
1RU
Medium secure branch
ISR4351-SEC/K9
Yes
400 Mbps
2
Yes
1RU
Medium-to-small branches
ISR4331-SEC/K9
Yes
300 Mbps
2
Yes
1RU
Secure compact branch offices
Latest ISR 4000 Series Security Models
Model
Max Throughput
SEC License
SD-WAN
Ideal Role
ISR4451-X-SEC/K9
2 Gbps
Yes
Yes
Enterprise-class security router
ISR4431-SEC/K9
1 Gbps
Yes
Yes
Medium secure WAN edge
ISR4351-SEC/K9
400 Mbps
Yes
Yes
Secure voice/data integration
Sinanova specializes in supplying ICT networking equipment from leading brands such as Cisco, Huawei, and Juniper. Our product range includes switches, routers, firewalls, wireless access points and controllers, IP phones, video conferencing solutions, and more. We are committed to delivering original and reliable hardware along with professional ICT solutions—all at competitive prices. Our high-quality service ensures a smooth and hassle-free purchasing experience for our clients.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Distributor/Wholesaler,Exporter,Seller
Year Established:
2025
Total Annual:
50000-3000000
Employee Number:
50~100
Ecer Certification：
Verified Supplier
Sinanova began as a domestic distributor of Cisco products and an ICT integrator. Over time, the company expanded its portfolio to include Huawei data communication equipment as well as networking solutions from Juniper and Fortinet.
Today, Sinanova specializes in providing a wide range of networ... Sinanova began as a domestic distributor of Cisco products and an ICT integrator. Over time, the company expanded its portfolio to include Huawei data communication equipment as well as networking solutions from Juniper and Fortinet.
Today, Sinanova specializes in providing a wide range of networ...
