RHELSecureSetup

This Bash script is designed for RHEL-based Linux distributions. It automates the process of updating the system, configuring security settings, and optionally installing Docker CE.

Features

System Updates: Updates the package manager and upgrades installed packages.
Timezone Configuration: Sets the system timezone.
Hostname Change: Changes the hostname of the machine.
Hosts File Update: Updates the /etc/hosts file with the machine's IP address and hostname.
SSH Security Enhancements:
- Disables root login.
- Disables password authentication.
- Ensures IPv4 address family is explicitly set.
Optional Docker Installation: Installs Docker CE using the official installation script.

Prerequisites

A RHEL-based Linux distribution (e.g., CentOS, Fedora).
Root access or sudo privileges.
dnf or yum package manager.
curl installed (if not present, install it using your package manager).

Usage

Clone the repository:

git clone https://git.nickhepler.cloud/nick/RHELSecureSetup.git
cd RHELSecureSetup

Make the script executable:
```
chmod +x setup.sh
```
Run the script with root privileges:
```
sudo ./setup.sh
```
Follow the prompts:
- Enter the desired hostname and timezone.
- Provide a username and password for a new limited user account.
- Optionally, choose whether to install Docker CE at the end of the script.

Customization

Time Zone: Modify the timezone variable in the script to set your desired timezone.
Hostname: The script prompts for a hostname during execution, but you can also set a default value in the script.

License

This project is licensed under the GPL-3.0 License. See the LICENSE file for more details.

Acknowledgments

Inspired by documentation from Akamai (formerly Linode) for setting up and securing compute instances.

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