Oracle Server Hardening Setup

My website is already live on an Oracle server, but I want the underlying environment locked down and kept secure for the long haul so I’m never scrambling for help when a threat appears.

Here’s what I need from you:

• Configure the operating system and all running services so security updates apply automatically, without breaking the site.
• Harden SSH and all remote-access points, disable unnecessary ports, and enforce key-based logins.
• Set up a firewall and intrusion-prevention tooling that actively blocks suspicious traffic and logs attempts.
• Implement regular integrity checks to flag unexpected changes anywhere on the server—code, configs, or system binaries.
• Document the entire setup in plain language so I can reference it later if I ever want to review or tweak settings.

Everything on the server—code, databases, logs, and system files—must be covered by the protective measures you put in place. If you have proven experience securing Oracle Cloud or similar Linux environments and can hand over a clean, well-commented configuration along with a brief hand-off session, let’s get started.