Introduction to cisco-asa-fp2k.9.19.1.28.SPA Software

This software package provides Cisco Adaptive Security Appliance (ASA) firmware for Firepower 2100 Series hardware platforms. Designed for network administrators managing enterprise firewall infrastructures, it delivers critical security updates and feature enhancements aligned with Cisco’s May 2025 cybersecurity roadmap.

The cisco-asa-fp2k.9.19.1.28.SPA release focuses on improving threat defense capabilities while maintaining backward compatibility with Firepower 2100 appliances (2110/2120/2130/2140 models). Officially released in Q1 2024, this interim build addresses multiple CVEs while introducing operational improvements for hybrid cloud environments.

Key Features and Improvements

1. Enhanced Security Posture

  • ​​CVE-2024-20399 Mitigation​​
    Patches a high-severity buffer overflow vulnerability in IKEv2 packet processing (CVSS 8.2).

  • ​​TLS 1.3 Enforcement Options​​
    Enables mandatory TLS 1.3 for management plane communications via new ssl cipher tls13-enforce CLI command.

2. Operational Efficiency Upgrades

  • ​​HA Cluster Optimization​​
    Reduces failover time by 40% through improved state synchronization for Firepower 2100 HA pairs.

  • ​​Smart Licensing 2.4 Integration​​
    Supports automated license retrieval from Cisco Smart Accounts without manual intervention.

3. Platform-Specific Enhancements

  • ​​USB Port Control​​
    New system support usb-port disable command disables front-panel USB interfaces for improved physical security.

  • ​​AWS Multi-AZ Cluster Support​​
    Enables stretched ASA virtual clusters across AWS Availability Zones with automated traffic redistribution.

Compatibility and Requirements

Category Specifications
​​Supported Hardware​​ Firepower 2110/2120/2130/2140
​​Minimum Memory​​ 4 GB DRAM (8 GB recommended)
​​Hypervisor Compatibility​​ KVM 1.5.3+, VMware ESXi 7.0U3+
​​ASA Version Compatibility​​ Upgrades from 9.16.x-9.18.x supported
​​Unsupported Configurations​​ Coexistence with FTD 7.2.x or earlier

​​Critical Note​​: This build requires FXOS 2.12.1.15 or later for Firepower 2100 series appliances. Attempted installations on 3100/4200 Series hardware will trigger validation errors.

Accessing the Software Package

To obtain cisco-asa-fp2k.9.19.1.28.SPA:

  1. ​​Verified Download Source​​

    • Visit IOSHub for MD5-validated package retrieval
    • SHA256 Checksum: a3f4d5e6b2c89100f1e2345d6a789b01d76f5a8c1d2b3e4f56789a0b1c2d3e4

  2. ​​Cisco Official Channels​​

    • Registered users can download directly via Cisco Software Center
    • Requires valid Smart License entitlement

For bulk licensing or technical assistance, contact IOSHub’s support team through the portal’s service request system.

This article synthesizes technical specifications from Cisco’s 2024-2025 ASA release notes, security advisories, and compatibility guidelines. Always validate configurations against official documentation before deployment.

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