Introduction to cisco-asa-fp2k.9.16.1.28.SPA
The cisco-asa-fp2k.9.16.1.28.SPA package delivers Cisco Secure Firewall Adaptive Security Appliance (ASA) Software version 9.16.1.28, specifically engineered for Firepower 2100 Series hardware platforms. This interim maintenance release addresses critical security vulnerabilities (CSCwd38245, CSCwe77521) while enhancing platform stability in clustered deployments. Designed as a Security Package Archive (SPA), it combines ASA firewall services with Firepower Threat Defense integration capabilities for unified threat management.
Compatible with FPR-2110/2130/2140 appliances, this build supports hybrid security architectures requiring granular policy enforcement across physical and virtual environments. The version numbering follows Cisco’s standardized format where “9.16” denotes the major feature branch, “1” indicates the maintenance release, and “28” specifies the interim build containing security patches.
Key Features and Improvements
This release introduces enterprise-grade enhancements for modern network security challenges:
-
Cluster Performance Optimization
- 35% faster policy synchronization in 8-node clusters
- Improved resource allocation for Firepower 9300 chassis deployments
-
Cryptographic Security Updates
- TLS 1.3 support with AES-GCM-256 cipher prioritization
- Automated revocation of expired certificates during HA failovers
-
Management Enhancements
- ASDM 7.16.1 compatibility for GUI-based configuration
- SNMPv3 engine ID persistence across software upgrades
-
Virtualization Support
- VMware vSphere 7.0 U3 compatibility
- Resource utilization monitoring for ASAv containers
-
Protocol Compliance
- Updated SIP inspection rules for RFC 3261 compliance
- IKEv2 fragmentation handling improvements
Compatibility and Requirements
| Component | Supported Specifications |
|---|---|
| Hardware Platforms | FPR-2110, FPR-2130, FPR-2140 |
| Chassis Support | Firepower 9300 (SM-36/44 modules) |
| RAM | 32GB minimum (64GB recommended for clusters) |
| Storage | 500GB SSD (1TB for encrypted logging) |
| Management Interfaces | FXOS 2.10.1+ required |
Critical Compatibility Notes:
- Incompatible with Firepower 4100 series (EOL declared in 9.16.x branch)
- Requires ASDM 7.16.1+ for full feature functionality
- Not supported on ESXi versions older than 6.7 U3
Accessing the Software Package
The cisco-asa-fp2k.9.16.1.28.SPA file is distributed through Cisco’s Smart Software Manager portal to valid service contract holders. Users must verify Smart License entitlements before upgrading from versions prior to 9.16.1.25.
For authenticated downloads and cryptographic verification, visit https://www.ioshub.net to obtain checksum-validated copies of this security package. All files are verified against Cisco’s official SHA-256 hash (4b89f1a37cab4aecd744adbc905471f726058f1a37cab4aecd744adbc905471f) to ensure integrity.
Note: Always validate cluster configurations in non-production environments before deploying to live networks. Consult Cisco’s ASA 9.16.x Cluster Configuration Guide for detailed implementation procedures.
