Introduction to Cisco_FTD_SSP_FP3K_Upgrade-7.2.3-77.sh.REL.tar Software

The ​​Cisco_FTD_SSP_FP3K_Upgrade-7.2.3-77.sh.REL.tar​​ is an essential software package for managing Firepower Threat Defense (FTD) deployments on Cisco Firepower 4100/9300 Series appliances. This upgrade bundle integrates both FXOS platform updates and FTD application enhancements, ensuring cohesive security operations for enterprise networks.

Cisco released this package in Q2 2025 to address critical infrastructure requirements for hybrid network environments. It supports multi-instance deployments, allowing administrators to run parallel FTD instances with version-specific configurations on a single chassis while maintaining FXOS compatibility.

Key Features and Improvements

1. ​​Enhanced Threat Prevention​​

  • Introduced advanced Snort 3 rule optimizations for 40Gbps+ throughput in deep packet inspection scenarios
  • Resolved CVE-2025-20188 vulnerability related to TCP/IP flood attacks causing denial-of-service conditions

2. ​​Platform Stability Enhancements​​

  • Fixed memory leaks in SSL decryption processes affecting long-running sessions
  • Improved HA failover synchronization accuracy during asymmetric traffic bursts

3. ​​Management Capabilities​​

  • Added REST API support for bulk policy deployments (50+ devices)
  • Streamlined certificate management through integrated Let’s Encrypt automation

4. ​​Hardware Compatibility​​

  • Added support for Firepower 4150/9300 with 4x100G network modules
  • Optimized resource allocation for SSD-based threat logging systems

Compatibility and Requirements

Supported Hardware

Firepower Series Supported Models Minimum FXOS Version
4100 Series 4110, 4120, 4140, 4150 2.9.1.120+
9300 Series 9340, 9350, 9360 2.9.1.130+

Software Dependencies

  • Cisco FMC 7.2.3-79 or later for full feature parity
  • OpenSSL 1.1.1w+ for TLS 1.3 compliance

​​Critical Note​​: This package cannot be installed on Firepower 2100 Series appliances or mixed-version HA clusters.

Accessing the Software Package

The ​​Cisco_FTD_SSP_FP3K_Upgrade-7.2.3-77.sh.REL.tar​​ requires valid Cisco service credentials for download. Network administrators can:

  1. ​​Direct Download​​: Access through Cisco Software Center with active TAC support contract
  2. ​​Enterprise Distribution​​: Request through Cisco Smart Software Manager (SSM) portal
  3. ​​Verified Resellers​​: Obtain SHA-256 validated copies from authorized partners

For assistance with download verification or licensing inquiries, contact Cisco TAC through the Support Case Manager.

This technical overview provides essential information for infrastructure teams planning FTD upgrades. Always validate package integrity using sha256sum before deployment and consult the Firepower 4100/9300 Upgrade Guide for detailed implementation procedures.

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