Security Best Practices
Security guidelines and best practices for Lambda Softworks' Linux automation scripts.
Security is a core principle in all Lambda Softworks' scripts. Follow these guidelines to ensure secure deployment and operation.
Installation Security
Script Verification
Always verify downloaded packages:
# 1. Download checksum wget https://download.lambdasoftworks.com/scripts/<package-name>.sha256 # 2. Verify checksum sha256sum -c <package-name>.sha256 # 3. Verify GPG signature gpg --verify <package-name>.tar.gz.asc <package-name>.tar.gz
Installation Location
- Use standard system paths
- Maintain proper permissions
- Keep scripts isolated from web roots
# Recommended installation paths /opt/lambdasoftworks/ # Main installation /etc/lambdasoftworks/ # Configuration files /var/log/lambdasoftworks/ # Log files /var/run/lambdasoftworks/ # Runtime files
Access Control
File Permissions
# Set proper ownership chown -R root:lambdasoftworks /opt/lambdasoftworks chown -R root:lambdasoftworks /etc/lambdasoftworks # Set restrictive permissions chmod 750 /opt/lambdasoftworks chmod 640 /etc/lambdasoftworks/*.yml chmod 640 /var/log/lambdasoftworks/*.log
Service Account
Create a dedicated service account:
# Create service user and group groupadd lambdasoftworks useradd -r -g lambdasoftworks -s /sbin/nologin lambdasoftworks # Add to necessary groups usermod -a -G backup,www-data lambdasoftworks
Configuration Security
Secure Configuration
# /etc/lambdasoftworks/security.yml
security:
# Access Control
allowed_users:
- root
- lambdasoftworks
allowed_groups:
- lambdasoftworks
- backup
# Network Security
allowed_networks:
- 10.0.0.0/8
- 172.16.0.0/12
- 192.168.0.0/16
# Encryption
encryption:
required: true
minimum_strength: 256
algorithms:
- aes-256-gcm
- chacha20-poly1305
# Authentication
auth:
mfa_required: true
password_policy:
min_length: 16
require_special: true
require_numbers: true
max_age_days: 90
# Logging
audit_logging:
enabled: true
retention_days: 90
syslog_facility: local2
Network Security
Firewall Configuration
# Configure firewall rules ./security-manager.sh --setup-firewall \ --allow-ssh 10.0.0.0/8 \ --allow-monitoring 192.168.1.0/24 \ --deny-all-other
Secure Communication
- Use TLS 1.2/1.3 only
- Implement certificate validation
- Enable perfect forward secrecy
Encryption
Data at Rest
# Enable encryption for backups ./backup-orchestrator.sh \ --encrypt \ --cipher aes-256-gcm \ --key-file /etc/lambdasoftworks/keys/backup.key # Encrypt configuration files ./security-manager.sh --encrypt-config \ --config /etc/lambdasoftworks/*.yml
Data in Transit
- Use HTTPS for web interfaces
- Encrypt remote backup transfers
- Secure monitoring data transmission
Monitoring & Auditing
Security Monitoring
# Enable security monitoring ./security-manager.sh --enable-monitoring \ --watch-files /etc/lambdasoftworks/ \ --watch-processes lambdasoftworks \ --alert-on-change
Audit Logging
# Configure audit logging ./security-manager.sh --setup-audit \ --log-level detailed \ --syslog-facility local2 \ --retain-days 90
Incident Response
Automatic Response
# Configure automatic responses ./security-manager.sh --auto-response \ --on-breach "lockdown" \ --on-attack "block-ip" \ --notify admin@company.com
Manual Response
# Security incident tools ./security-manager.sh --incident-response \ --collect-logs \ --analyze-traffic \ --generate-report
Regular Maintenance
Updates
# Check for security updates ./security-manager.sh --check-updates # Apply security patches ./security-manager.sh --apply-updates --security-only
Security Scans
# Run security scan ./security-manager.sh --scan \ --type full \ --include-deps \ --generate-report
Integration Security
API Security
- Use API keys with limited scope
- Implement rate limiting
- Enable request signing
Cloud Security
# Secure cloud connections ./cloud-sync.sh --secure-connection \ --enforce-tls \ --verify-certs \ --private-endpoints
Compliance
Compliance Checks
# Run compliance check ./security-manager.sh --compliance-check \ --standard pci-dss \ --generate-report
Security Policies
- Document all security configurations
- Maintain change logs
- Regular security reviews