A Practical Production Server Hardening Checklist
Server hardening starts by reducing exposure, limiting privileges, and protecting secrets, then supports those controls with monitoring and restorable backups.
Omar Alalwi Article
Begin by reducing what is reachable. Open only necessary ports, and keep databases and internal services behind a private network or allowlist. Restrict SSH to strong keys and trusted sources where practical, and disable password login and unused accounts.
Keep secrets and certificates out of the repository and public path. Use a secrets manager or tightly permissioned files, and run the application and its components under least-privileged accounts. Give the database user only required operations, disable production debugging, and validate uploaded file type and size outside executable paths.
Complete the baseline with regular security updates, centralized logs, alerts for unusual behavior, request limits, and appropriate edge protection. Run services under a process manager, keep encrypted and separate backups, and test restoration. This checklist is a starting point; the actual threat model and data sensitivity determine what comes next.
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