What are Redis security hardening techniques for production?

Redis security involves authentication, network protection, command restrictions, and monitoring to prevent unauthorized access.\n\n• **Authentication Setup:**\nSet strong passwords with requirepass, use ACLs for fine-grained access control, and create user-specific permissions.\n\nrequirepass your_strong_password_here\nuser app_user on >app_password ~app:* +@read +@write -@dangerous\n\n• **Network Security:**\nBind to specific interfaces only, change default port, use firewalls, and implement VPN access for remote connections.\n\nbind 127.0.0.1 10.0.1.100\nport 6380\n\n• **Command Restrictions:**\nDisable dangerous commands like FLUSHALL, CONFIG, and KEYS in production to prevent accidental data loss.\n\nrename-command FLUSHALL ""\nrename-command CONFIG "CONFIG_secret_token"\n\n• **TLS Encryption:**\nEncrypt data in transit, verify client certificates, and use strong cipher suites for secure communication.\n\nport 0\ntls-port 6380\ntls-cert-file /path/to/redis.crt\n\n• **Monitoring and Auditing:**\nEnable logging, monitor failed authentication attempts, track command usage, and set up alerts for suspicious activity.\n\n• **File Permissions:**\nSecure Redis files with proper ownership and permissions to prevent unauthorized access to configuration and data files.\n\n• **Best Practices:**\nRegular security audits, keep Redis updated, use dedicated Redis users, implement backup encryption, and document security procedures.