How to Secure Your Linux Server Using Hosteon's One-Click Hardening Script Print

To help you harden your Linux server quickly and securely, Hosteons has released a free, open-source hardening script that works across:

• Ubuntu

• Debian

• CentOS

• AlmaLinux

This script automates essential security steps such as updating your system, configuring SSH access, setting up a firewall, and running a basic audit.

Features

• Automatically updates system packages

• Prompts to change SSH port

• Optionally disables root login

• Option to create a new sudo-enabled user

• Installs and enables Fail2Ban

• Installs and runs a Lynis audit

• Enables UFW (for Ubuntu/Debian) or firewalld (for CentOS/AlmaLinux)

• Adjusts SELinux policies if active

How to Use

1. SSH into your VPS as root

2. Run the following commands:

curl -O https://raw.githubusercontent.com/hosteons/Linux-Hardening-Script/main/harden.sh
chmod +x harden.sh
./harden.sh

3. Follow the interactive prompts to configure your server securely

Important Notes

• You must have console access (such as VNC or IPMI) in case SSH access is misconfigured

• Use with caution on production servers

• The script supports common distributions only (Ubuntu, Debian, CentOS, AlmaLinux)

GitHub Repository

You can view or contribute to the project at:

https://github.com/hosteons/Linux-Hardening-Script