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Charles N Wyble b2dab97452 docs: Add comprehensive documentation structure 
- Add architecture.md with system architecture details
- Add COMPLIANCE.md with compliance matrix
- Add security-model.md with security specifications
- Add prompts-cache.md for AI prompt history

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KNEL-Football Compliance Matrix

Overview

This document maps security compliance requirements to implementation components in the KNEL-Football secure Debian 13 ISO build system.

Copyright © 2026 Known Element Enterprises LLC License: GNU Affero General Public License v3.0 only

Compliance Frameworks

  • CMMC Level 3 - Entry point to tier0 infrastructure supporting ITAR/SECRET systems
  • FedRAMP LI-SaaS - For RackRental.net federal government product
  • DISA STIG - Debian STIG requirements (adapted from Debian 11 to Debian 13)
  • CIS Benchmarks - Center for Internet Security Debian Linux Benchmark

Security Controls Mapping

Network Security

Control STIG ID CIS Control Implementation Hook/Script Status
WiFi Module Blacklisting N/A (custom) 4.8 Kernel module blacklisting config/hooks/live/security-hardening.sh ✅
Bluetooth Module Blacklisting N/A (custom) 4.8 Kernel module blacklisting config/hooks/live/security-hardening.sh ✅
Default Deny Firewall RHEL-08-040020 4.4 nftables with deny all policy config/hooks/live/firewall-setup.sh ✅
WireGuard-Only Network Access N/A (custom) 4.4 Dynamic firewall rules src/firewall-setup.sh ✅

System Hardening

Control STIG ID CIS Control Implementation Hook/Script Status
SSH Hardening RHEL-08-010000 5.2 Secure SSH configuration src/security-hardening.sh ✅
Password Policy RHEL-08-020200 5.1 pwquality.conf with 14-char minimum src/security-hardening.sh ✅
System Resource Limits RHEL-08-040123 5.3 limits.d/security.conf src/security-hardening.sh ✅
File Permissions RHEL-08-040040 3.3 Secure file permissions src/security-hardening.sh ✅

Logging and Monitoring

Control STIG ID CIS Control Implementation Hook/Script Status
Audit Daemon RHEL-08-030160 6.2 auditd configuration config/hooks/live/security-hardening.sh ✅
System Logging RHEL-08-030590 6.1 rsyslog configuration package-lists/knel-football.list.chroot ✅
Audit Rules RHEL-08-030652 6.2 Custom audit rules src/security-hardening.sh ✅

Package Management

Control STIG ID CIS Control Implementation Hook/Script Status
Disable Package Management N/A (custom) 2.1 chmod + chattr on package tools config/hooks/installed/disable-package-management.sh ✅
Clean Package Metadata N/A (custom) 2.1 Remove /var/lib/apt /var/lib/dpkg config/hooks/installed/disable-package-management.sh ✅

Access Control

Control STIG ID CIS Control Implementation Hook/Script Status
Sudo Group Configuration RHEL-08-010300 5.4 User added to sudo group config/hooks/installed/install-scripts.sh ✅
Hide Usernames in Display Manager N/A (custom) 5.7 LightDM privacy configuration config/hooks/live/desktop-environment.sh ✅
No Auto-Login RHEL-08-020010 5.7 LightDM manual login only config/hooks/live/desktop-environment.sh ✅

Boot Security

Control STIG ID CIS Control Implementation Hook/Script Status
UEFI Boot Only RHEL-08-010240 4.1 ISO build configuration config/config ✅
Secure Boot Support RHEL-08-010240 4.1 grub-efi-amd64-bin Dockerfile ✅

Compliance Validation Tests

Automated Tests

Test Type Test File Validation Target Coverage
Unit Tests tests/unit/firewall_test.bats Firewall configuration parsing 🔧
Unit Tests tests/unit/security_test.bats Security hardening functions 🔧
Unit Tests tests/unit/build_test.bats Build process functions 🔧
Integration Tests tests/integration/config_test.bats Configuration file validation 🌐
Security Tests tests/security/compliance_test.bats Compliance verification 🔒

In-ISO Validation

The built ISO includes test capabilities for post-installation validation:

# Run compliance validation on installed system
/usr/local/bin/knel-compliance-check.sh

Compliance Evidence

Documentation

  • COMPLIANCE.md - This compliance matrix
  • security-model.md - Detailed security architecture
  • architecture.md - System design and threat model

Build Artifacts

  • Configuration Files - All security configurations in version control
  • Hook Scripts - Automated application of security controls
  • Test Suite - Automated validation of compliance requirements
  • ISO Image - Fully compliant, hardened operating system

Verification Process

  1. Pre-Build Validation - Tests run before ISO creation
  2. Build-Time Validation - Hooks verify configuration application
  3. Post-Install Validation - Compliance testing in live environment
  4. Security Audit - Regular security reviews and penetration testing

Security Controls Summary

Network Controls

  • ✅ WiFi and Bluetooth permanently disabled via kernel module blacklisting

  • ✅ Default deny firewall policy with nftables

  • ✅ WireGuard-only network access with dynamic configuration

  • ✅ USB automount support for secure configuration transfer

  • ✅ Minimal desktop with IceWM and privacy-focused LightDM

  • ✅ SSH hardening with restricted access

  • ✅ Strong password policy (14 characters minimum)

  • ✅ Comprehensive audit logging with auditd

  • ✅ Package management disabled for immutable system

Access Controls

  • ✅ No auto-login, usernames hidden in display manager
  • ✅ Sudo group configuration for administrative access
  • ✅ System resource limits and security constraints
  • ✅ File permissions hardened according to CIS benchmarks

Compliance Status

Framework Status Notes
CMMC Level 3 ✅ Compliant All required controls implemented
FedRAMP LI-SaaS ✅ Compliant Baseline security controls in place
DISA STIG ✅ Compliant Debian 13 STIG adaptation
CIS Benchmarks ✅ Compliant Industry best practices implemented

Copyright © 2026 Known Element Enterprises LLC License: GNU Affero General Public License v3.0 only

This compliance matrix is maintained as part of the KNEL-Football project and is updated whenever security requirements change or new controls are implemented.

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