Introduction to secure-firewall-posture-5.1.6.103-k9.pkg Software

The ​​secure-firewall-posture-5.1.6.103-k9.pkg​​ is a critical component of Cisco Secure Client (formerly AnyConnect), designed to enforce endpoint compliance with organizational security policies. This module performs advanced posture assessments to verify device health status before granting network access, ensuring endpoints meet predefined security standards such as antivirus protection, disk encryption, and OS patch levels.

Compatible with Cisco Secure Firewall ASA platforms and ISE (Identity Services Engine) deployments, this version (5.1.6.103) was released in September 2024 as part of Cisco’s continuous security enhancement cycle. It integrates with Cisco’s Zero Trust architecture to validate endpoint security states through automated policy checks and remediation workflows.

Key Features and Improvements

1. Enhanced Platform Support

  • Added official compatibility with ​​macOS 15 (Sequoia)​​ while phasing out support for macOS 12 (Monterey)
  • Updated OPSWAT security engine versions for Windows, Linux, and macOS vulnerability detection

2. Security Protocol Enhancements

  • Implemented ​​mDTLS encryption​​ for secure data transmission to Network Visibility Module collectors
  • Introduced certificate template filtering for improved X.509 certificate validation

3. Diagnostic Improvements

  • Added direct DART package submission to Cisco TAC
  • Enhanced endpoint disk encryption reporting capabilities

4. Critical Vulnerability Fixes

  • Resolved CSCwm50168: Network Visibility Module username reporting issue on macOS 15
  • Addressed CSCwm53109: Certificate chain validation errors with intermediate CAs
  • Fixed CSCwm60665: mTLS connection failures in unconfigured policy scenarios

Compatibility and Requirements

Supported Platforms

Category Supported Versions
Windows 11 (64-bit), 10 (x86/x64), Windows Server 2022
macOS 15 (Sequoia), 14 (Sonoma), 13 (Ventura)
Linux RHEL 7.5+, Ubuntu 22.04/20.04, SLES 15+

Hardware Requirements

  • Minimum 512MB flash memory on ASA devices
  • 2GB RAM for endpoint installations
  • Dual-core 2.4GHz processor or higher

Known Limitations

  1. Partial functionality on macOS 15:
    • Network Visibility Module process identification discrepancies (CSCwm50228)
    • Gatekeeper firewall compatibility issues (CSCwm12254)
  2. Requires Secure Firewall Posture 5.0.00529+ for full compatibility with Cisco Secure Client 5.x

Obtain Software Package

Authorized users can download ​​secure-firewall-posture-5.1.6.103-k9.pkg​​ through Cisco’s official software portal using valid service contracts. For alternative access options, visit https://www.ioshub.net to explore available distribution channels.

​​Note​​: This package must be deployed alongside compatible Cisco Secure Client versions (5.1.6.103+) and requires ASA firmware 9.20.3+ for full feature functionality. Always verify cryptographic hashes against Cisco’s published values before installation.

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