# ssh

A production security baseline for Rocky Linux 9 — covering SELinux configuration, firewalld rules, SSH hardening, auditd, AIDE integrity checking, and CIS Benchmark compliance checks.

A complete walkthrough for turning a fresh Ubuntu 24.04 LTS installation into a production-ready server — from initial SSH lockdown to swap configuration and kernel parameter tuning.

Resolve Ansible unreachable host failures — diagnose SSH connectivity, key auth, Python interpreter, and timeout issues.

Diagnose and fix SSH connection refused errors after a Linux server reboot, covering sshd service, firewall rules, port configuration, and host key issues.