I will harden your linux rhel server with selinux, firewalld, ssh and podman

Is your Linux server exposed to brute-force attacks, misconfigured SELinux, or no automated backup?

I am a Senior Port IT Systems Engineer at Mongla Port Authority with 12+ years securing Linux infrastructure. Built 7 hardened Bash scripts (1,457 lines) for full RHCSA EX200 hardening. All ShellCheck verified, GitHub CI passing, RHEL 9 production-tested.

WHAT I DELIVER:

- SSH hardening: port 2222, key-only auth, CIS/NIST ciphers, fail2ban

- SELinux enforcing: custom fcontext rules, port labeling, audit2allow

- firewalld rich rules with CIDR blocking and rate limiting

- Podman rootless containers with TLS 1.3 nginx reverse proxy

- LVM: 30GB across 3 logical volumes with XFS + UUID fstab

- POSIX ACLs with inheritance for team access control

- rsyslog routing + logrotate 90-day retention

- Daily systemd backup timer with SHA256 integrity check

- SSL auto-renewal via certbot with multi-channel alerts

WHY CHOOSE ME:

- 12+ years real port operations experience

- 11 production-grade Linux/DevOps projects on GitHub (github.com/samiul4sumel)

- RHCSA EX200 aligned, scripts map to Red Hat exam objectives

- ShellCheck verified, zero warnings, CI passing on all scripts

- Dry-run mod