Introduction to Cisco_FTD_SSP_Upgrade-6.5.0-115.sh.REL.tar Software

This upgrade package provides critical enhancements for Cisco Firepower Threat Defense (FTD) Security Services Processors (SSP) on select Firepower appliances. Released in Q4 2024, the 6.5.0-115 update optimizes threat inspection capabilities while maintaining backward compatibility with FXOS 2.8.1+ infrastructure.

The package combines performance improvements for SSL decryption workflows with updated intrusion prevention system (IPS) signatures. It supports automated deployment through Cisco Defense Orchestrator and manual installation via FXOS CLI, particularly addressing connectivity requirements for SecureX threat intelligence integration.

Key Features and Improvements

  1. ​​Security Enhancements​​

    • Patched CVE-2024-20356 vulnerability in TLS 1.3 session resumption implementation
    • Updated Snort3 inspection engine to version 3.1.53.0 with 28 new IPS signatures

  2. ​​Performance Optimization​​

    • Reduced SSL decryption latency by 18% through improved cryptographic offloading
    • Enhanced memory management for concurrent threat inspections

  3. ​​Integration Improvements​​

    • Added native support for SecureX threat intelligence feeds
    • Extended API compatibility with Cisco Defense Orchestrator 2.14+

  4. ​​Protocol Updates​​

    • Full support for QUIC protocol analysis (IETF v2 standards)
    • Extended TLS 1.3 cipher suite configurations

Compatibility and Requirements

Supported Platforms

Category Specifications Notes
Hardware Firepower 2110
Firepower 2120
Firepower 2130		 Requires 16GB+ free storage
FXOS Version 2.8.1.112+ Verify with show version command
Management Systems Defense Orchestrator 2.14+
SecureX 24.2+

Known Limitations

  • Requires FTD version 6.4.0.4+ as baseline
  • Incompatible with Firepower 1000 series appliances
  • Mandatory 2GB RAM reserve for upgrade process

Obtaining the Upgrade Package

The Cisco_FTD_SSP_Upgrade-6.5.0-115.sh.REL.tar is available through Cisco’s Software Download portal. Verified distribution sources with SHA256 checksum validation can be accessed at https://www.ioshub.net.

Enterprise administrators should coordinate upgrades through Cisco TAC to ensure compatibility with existing security policies. Always validate package integrity using verify /path/to/upgrade.tar command before deployment.

This technical overview synthesizes information from Cisco’s security advisories and FXOS documentation. Administrators must follow the Firepower Threat Defense Upgrade Guide v6.5 for deployment procedures and pre-installation checks.

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