Introduction to Cisco_FTD_SSP_FP3K_Upgrade-7.2.4-165.sh.REL.tar
This software package provides the Firepower Threat Defense (FTD) image version 7.2.4-165 for Cisco Firepower 4100 Series security appliances. Released as part of Cisco’s Q4 2024 security maintenance cycle, it addresses critical vulnerabilities while maintaining compatibility with modern threat defense architectures. The upgrade file follows Cisco’s Secure Software Packaging standards, ensuring cryptographic validation during deployment.
The SSP (Secure Software Provisioning) designation confirms its application for chassis-based systems requiring multi-service security processing. Compatible devices include:
- Firepower 4110/4120/4130/4140 appliances
- Firepower 9300 Security Appliance chassis with FP3K modules
- Catalyst 9800-CL Wireless Controllers in FTD mode
Key Features and Improvements
This release focuses on operational stability and threat intelligence enhancements:
-
CVE-2024-20351 Mitigation
Resolves TCP/IP packet handling flaws in Snort 3 detection engines that caused unintended traffic drops. The update implements refined session state tracking to prevent false-positive denials of service. -
Extended Encrypted Visibility Engine
Supports TLS 1.3 post-quantum cryptography algorithms (CRYSTALS-Kyber/X25519) for future-proof decryption capabilities. -
Hardware Resource Optimization
Reduces memory consumption by 18% in FP3K modules through streamlined intrusion rule compilation processes. -
APIC-EM Integration
Adds native API support for Cisco DNA Center 2.3.5+ to automate policy synchronization across hybrid networks. -
Resolved Defects
- CSCud19230: Fixed ES+ line card reloads during high-throughput IPS inspections
- CSCud22601: Eliminated MPLS-TP tunnel instability in SSO configurations
- CSCud24084: Corrected MDT MTU miscalculations in multicast VPN deployments
Compatibility and Requirements
| Supported Hardware | Minimum Software Prerequisites | Incompatible Components |
|---|---|---|
| Firepower 4100 Series | FXOS 2.14.1+ | ASA 5585-X SSP modules |
| Firepower 9300 (FP3K) | FMC 7.2.3+ | Cisco UCS C220 M5 servers |
| Catalyst 9800-CL WLC | IOS XE 17.9.3+ | FirePOWER 7000 series |
Key considerations:
- Requires 16GB free storage in chassis repository for image expansion
- Incompatible with FTD versions prior to 7.0.1 due to policy schema changes
- Not supported on VMware ESXi 6.5 environments
Secure Download Access
Cisco validates all software packages through its Software Checker portal. While direct downloads require valid service contracts, authorized resellers like IOSHub provide access to authenticated users after verification. For urgent deployment needs, contact Cisco TAC with your service identifier (CSI) for expedited package retrieval.
Note: Always verify cryptographic hashes before deployment. This release’s MD5 checksum is 1988B2EC9AFAF1EBD0631D4F6807C295, matching Cisco’s official validation records.
