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Security license ensures ISR 4320 series remains fully compliant and secure with predictable B2B operations.
SL-4320-SEC-K9
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SECURITY LICENSE FOR ISR 4320 SERIES
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Name:
SL-4320-SEC-K9
- Description:
- SECURITY LICENSE FOR ISR 4320 SERIES
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 882658733819
- Condition:
- Warranty:
- 3
- List Price:
$1,534.00
- Price:
$535.0065.1% off
Quantity:
1
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SL-4320-SEC-K9 Overview
The SL-4320-SEC-K9 Cisco FirePOWER 4320 Security License activates advanced threat prevention and full next-generation security capabilities on the Cisco FirePOWER 4320 Next-Generation Firewall (NGFW). It enables enterprise-grade Next-Generation Intrusion Prevention (NGIPS) and Advanced Malware Protection (AMP), delivering intelligent, automated defense against evolving cyber threats.
This license enhances visibility, detection, and response across the network by using deep packet inspection, behavioral analytics, and file reputation tracking. It provides end-to-end protection from exploits, ransomware, and zero-day threats, leveraging Cisco Talos Intelligence for global, continuously updated threat feeds.
Delivered digitally via Electronic Software Delivery (ESD), the SL-4320-SEC-K9 license activates securely online. As an OEM perpetual license, it offers lifetime validity, ongoing compatibility with Cisco FirePOWER Threat Defense (FTD) software, and full eligibility for SMARTnet and FirePOWER Management Center (FMC) support.
Built for data centers, enterprise networks, and service providers, this license enables complete security coverage ensuring real-time threat prevention and continuous network visibility.
Capabilities
- Next-Generation Intrusion Prevention (NGIPS) - Detects, blocks, and mitigates threats using real-time analytics.
- Advanced Malware Protection (AMP) - Analyzes and prevents malicious files before and after infection.
- Application & URL Control - Integrates with Cisco’s AVC feature to manage applications and web usage.
- Global Threat Intelligence - Uses Cisco Talos feeds for proactive, predictive threat updates.
- Centralized Management & Reporting - Provides detailed visibility through Cisco FirePOWER Management Center (FMC).
- Perpetual License Model - Lifetime activation with full software compatibility and ongoing Cisco support.
Supported Hardware & Software for SL-4320-SEC-K9
The SL-4320-SEC-K9 license is purpose-built for the Cisco FirePOWER 4320 Series, delivering next-generation protection and advanced threat analytics for enterprise environments.
Supported Hardware Model:
- Cisco FirePOWER 4320 NGFW Appliance - Enterprise-class firewall offering scalable performance and intelligent security inspection.
Supported Software & Environments:
- Cisco FirePOWER Threat Defense (FTD)
- Cisco FirePOWER Management Center (FMC)
- Cisco Advanced Malware Protection (AMP)
- Cisco Application Visibility and Control (AVC)
- Windows Server (2016 / 2019 / 2022)
- Red Hat Enterprise Linux (RHEL)
- VMware ESXi / vSphere
The Cisco SL-4320-SEC-K9 License transforms the FirePOWER 4320 into a unified security platform delivering superior protection, real-time threat visibility, and resilient enterprise-grade network defense.
SL-4320-SEC-K9 price is $535.00, a 65.1% saving from the Cisco list price of $1,534.00. SL-4320-SEC-K9 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for SL-4320-SEC-K9 for additional pricing. Browse the full Cisco Isr 4000 Licenses series or explore all Cisco products.
SL-4320-SEC-K9 Specifications
- Product Type
- Software License
- Software Category
- Security
- License Type
- Retail
- License Duration
- Lifetime
- Use Case
- Enterprise
- User Count
- N/A
- Device Count
- 1 Device
- Platform Compatibility
- N/A
- Delivery Method
- Digital Key
- Activation Type
- Online Activation
- Language Support
- English
- Bit Version
- N/A
- Cloud Integration
- N/A
- Software Format
- Downloadable
- Support Included
- Vendor Support Required
- Product Name
- SL-4320-SEC-K9-SECURITY LICENSE FOR ISR 4320 SERIES
- License Key Included
- Yes
- ESD (Electronic Software Delivery)
- Yes
- Renewable
- N/A
- Compliance Certifications
- N/A
- Product Region
- Global
SL-4320-SEC-K9 Use Case
Secure SD-WAN Encryption for Distributed Branch Networks
Scenario: A nationwide retail chain deploys the SL-4320-SEC-K9-Security License on Cisco ISR 4320 routers to enable AES-256 encrypted SD-WAN tunnels between HQ and 200+ stores. Benefit: Delivers consistent, end-to-end data confidentiality, centralizes firewall policy enforcement, and reduces branch vulnerability by 85%, while simplifying PCI and GDPR compliance reporting.
IIoT Segmentation and Intrusion Prevention in Manufacturing Plants
Scenario: An advanced manufacturing facility integrates the SL-4320-SEC-K9-Security License with Cisco ISR 4320 Series to create micro-segmented zones for Industrial IoT devices and real-time malware inspection. Benefit: Enforces granular network isolation, prevents lateral threat propagation, and achieves a 70% reduction in incident response times, ensuring uninterrupted production and enhanced operational resilience.
Regulatory-Compliant VPN and Firewall for Financial Services
Scenario: A regional bank leverages the SL-4320-SEC-K9-Security License on its Cisco ISR 4320 edge routers to deploy FIPS-validated VPN encryption, stateful firewall, and advanced URL filtering at remote ATM sites. Benefit: Meets stringent PCI DSS and FFIEC requirements, delivers audit-ready logging, and cuts security administration overhead by 60%, safeguarding customer data and bolstering trust.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| SL-4320-SEC-K9 |  FL-44-BOOST-K9 |  SL-4330-UC-K9 |  SL-4330-SEC-K9 |  FL-4350-HSEC-K9= | |
|---|---|---|---|---|---|
| Activation Type | Online Activation | Online Activation | Online Activation | Online Activation | Online Activation |
| Bit Version | N/A | N/A | N/A | N/A | 64-bit |
| Cloud Integration | N/A | N/A | N/A | N/A | N/A |
| Compliance Certifications | N/A | N/A | N/A | N/A | N/A |
| Delivery Method | Digital Key | Digital Key | Digital Key | Digital Key | Digital Key |
| Device Count | 1 Device | 1 Device | 1 Device | 1 Device | Unlimited |
| ESD (Electronic Software Delivery) | Yes | Yes | Yes | Yes | Yes |
| Language Support | English | English | English | English | English |
| License Duration | Lifetime | Lifetime | Lifetime | 1 Year | Lifetime |
| License Key Included | Yes | Yes | Yes | Yes | Yes |
| License Type | Retail | Retail | Perpetual | Subscription | Volume |
| Platform Compatibility | N/A | Cross-Platform | Cross-Platform | N/A | Cross-Platform |
| Product Name | SL-4320-SEC-K9-SECURITY LICENSE FOR ISR 4320 SERIES | FL-44-BOOST-K9-Booster Performance License for Cisco 4450 Series Routers | SL-4330-UC-K9-UNIFIED COMMUNICATION LICENSE FOR CISCO ISR 4330 SERIES | SL-4330-SEC-K9-Security License for Cisco ISR 4330 Series | FL-4350-HSEC-K9=-U.S. Export Restriction Compliance License for 4350 Series |
| Product Region | Global | Global | Global | Global | North America |
| Product Type | Software License | Software License | Software License | Software License | Software License |
| Renewable | N/A | N/A | N/A | Yes | No |
| Software Category | Security | Network Management | Collaboration | Security | Security |
| Software Format | Downloadable | Downloadable | Downloadable | Downloadable | Downloadable |
| Support Included | Vendor Support Required | Yes | Yes | Vendor Support Required | Vendor Support Required |
| Use Case | Enterprise | Enterprise | Enterprise | Enterprise | Enterprise |
| User Count | N/A | N/A | N/A | N/A | Unlimited |
Reviews & Ratings
I
Isabella Brooks
5
Professional-grade usability and smooth deployment.
L
Lucas Hayes
4
Stable operations with minimal setup effort.
S
Sophia Ward
5
Reliable enterprise-grade protection.
M
Mason Brooks
5
Easy activation with predictable results.
Questions & Answers
What is the SL-4320-SEC-K9 security license for ISR 4320 Series?
The SL-4320-SEC-K9 is an advanced security license for Cisco ISR 4320 routers that unlocks firewall, IPS, URL filtering, VPN and threat-intelligence features under Cisco IOS XE.
Which security features are enabled by the SL-4320-SEC-K9 license?
The SL-4320-SEC-K9 license activates Cisco Next-Generation Firewall, Intrusion Prevention System (IPS), Advanced Malware Protection (AMP), URL Filtering, and Secure VPN on the ISR 4320 platform.
Which Cisco ISR 4320 models support the SL-4320-SEC-K9 license?
The SL-4320-SEC-K9 license is supported on all Cisco ISR 4321, 4322, 4331, and 4351 router variants running IOS XE 16.9.1 or later.
How do I install the SL-4320-SEC-K9 license on my ISR 4320 router?
To install, obtain the Cisco license entitlement, apply the Smart Licensing token via CLI (license smart register <token>), then install the SL-4320-SEC-K9 license file with the 'license install' command and reload the router.
Can I upgrade from the base security license to SL-4320-SEC-K9?
Yes. You can upgrade by purchasing the SL-4320-SEC-K9 SKU, registering your device in Cisco Smart Software Manager, and installing the new license to unlock enhanced security capabilities.
Is the SL-4320-SEC-K9 license perpetual or subscription-based?
The SL-4320-SEC-K9 license is perpetual, offering lifetime access to advanced security features without recurring fees, provided the device remains registered and supported under a Cisco Smart Account.
What are the prerequisites for activating the SL-4320-SEC-K9 license?
Prerequisites include Cisco IOS XE 16.9.1 or later, an active Smart Licensing account, internet connectivity (for token registration), and a valid SL-4320-SEC-K9 entitlement.
Does the SL-4320-SEC-K9 license affect firewall throughput?
No. The SL-4320-SEC-K9 license does not impose additional throughput constraints; firewall performance remains as specified for your ISR 4320 model.
How does SL-4320-SEC-K9 improve network security?
By enabling integrated threat defense—including IPS, URL Filtering, AMP, and dynamic threat-intelligence updates—the SL-4320-SEC-K9 license protects against advanced malware, zero-day exploits, and web threats in real time.
What is the maximum security throughput with the SL-4320-SEC-K9 license?
Security throughput depends on your ISR 4320 model: up to 300 Mbps on the 4321, 600 Mbps on the 4322, 1.2 Gbps on the 4331, and 2 Gbps on the 4351 when all security features are enabled.
How do I renew or extend the SL-4320-SEC-K9 license?
No renewal is required for the perpetual SL-4320-SEC-K9 license. Maintain device registration in your Cisco Smart Account and keep software support contracts current for updates.
Can I transfer the SL-4320-SEC-K9 license to another device?
Yes. Licenses can be rehosted via Cisco Smart Software Manager by deactivating the entitlement on the original ISR 4320 and reassigning it to the new router.
Is technical support included with the SL-4320-SEC-K9 license?
Technical support for the SL-4320-SEC-K9 features is included only if you maintain a valid Cisco Software Support Service (SWSS) contract for your ISR 4320 platform.
How does the SL-4320-SEC-K9 license integrate with Cisco DNA Center?
Once activated, SL-4320-SEC-K9 features on ISR 4320 routers can be discovered and managed through Cisco DNA Center for unified security policy orchestration and analytics.
What IOS XE software version is required for SL-4320-SEC-K9 activation?
Activation requires Cisco IOS XE 16.9.1 or later; ensure your ISR 4320 is running a supported train and feature set before installing the license.
Where can I purchase the SL-4320-SEC-K9 security license?
You can purchase SL-4320-SEC-K9 through Cisco authorized resellers, the Cisco Commerce Workspace portal, or directly via Cisco’s online store.