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Chapters

  • Understanding SSH Key Pairs
  • Generating Secure SSH Keys
  • Deploying Public Keys to Servers
  • Configuring SSH Client for Key Authentication
  • Managing SSH Agent for Secure Key Handling
  • Best Practices for Key Security
  • Troubleshooting Key Authentication
  • Planning Key Rotation Lifecycle
  • Automated Rotation Implementation
  • Compliance and Audit Trail
  • Initial Security Assessment
  • Essential sshd_config Hardening
  • Implementing Access Controls
  • Implementing Two-Factor Authentication
  • Monitoring and Intrusion Detection
  • Rate Limiting and Brute Force Protection
  • Advanced Security Features
  • Understanding SSH Configuration Hierarchy
  • Client Configuration Optimization
  • Server Configuration Templates
  • Advanced Match Block Configurations
  • Cipher and Algorithm Selection
  • Environment and Session Management
  • Logging and Audit Configuration
  • Performance Optimization
  • Understanding SSH Port Forwarding Types
  • Configuring Secure Port Forwarding Policies
  • Implementing Forwarding Access Controls
  • Monitoring and Auditing Port Forwarding
  • Securing Common Port Forwarding Scenarios
  • Preventing Port Forwarding Abuse
  • Advanced Forwarding Security Techniques
  • Understanding SSH Brute Force Attack Patterns
  • Implementing Rate Limiting with iptables
  • Configuring Fail2ban for Dynamic Protection
  • Implementing Port Knocking
  • Advanced Detection and Response
  • Implementing Deception and Active Defense
  • Performance Optimization for High-Volume Attacks
  • Security Baseline Assessment
  • System-Level Hardening
  • Advanced Authentication Hardening
  • Network-Level Hardening
  • Monitoring and Compliance
  • Hardening Automation
  • SSH Key Lifecycle Management
  • Centralized Key Repository
  • Automated Key Distribution
  • Key Rotation Strategies
  • Pre-Audit Preparation
  • Audit Information
  • 1. Version and Patch Management
  • 2. Authentication Configuration
  • 3. Access Controls
  • 4. Cryptographic Settings
  • 5. Connection Security
  • 6. Logging and Monitoring
  • 7. Advanced Security Features
  • 8. Key Management
  • 9. Network Security
  • 10. Compliance
  • Configuration Security Audit
  • Authentication and Access Audit
  • Network and Firewall Audit
  • Compliance Verification
  • Understanding Bastion Host Architecture
  • Implementing Secure Bastion Configuration
  • Managing User Access Through Bastion
  • Session Recording and Audit
  • High Availability and Scaling

2. Authentication Configuration

1 min read Data Protection & Compliance

2. Authentication Configuration

  • Root login disabled (PermitRootLogin no)
  • Password authentication disabled
  • Public key authentication enabled
  • Empty passwords prohibited
  • Challenge-response authentication disabled
  • Host-based authentication disabled
  • Kerberos/GSSAPI properly configured (if used)
← Previous: 1. Version and Patch Management Next: 3. Access Controls →

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