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🔐 Automatically Install Fail2Ban with Smart Jail Detection on Your VPS (Script by Hosteons)

hosteons June 3, 2025 Leave a Comment

Here’s a complete WordPress blog post draft to promote your Fail2Ban Auto-Installer script from GitHub:

🔐 Automatically Install Fail2Ban with Smart Jail Detection on Your VPS (Script by Hosteons)

At Hosteons, we’re committed to making server security easier for everyone. Whether you’re running a small VPS or managing a fleet of Linux servers, protecting against brute-force attacks is critical.

That’s why we’ve created a Fail2Ban Auto-Installer Script that not only installs Fail2Ban but also auto-detects and enables jails for common services like SSH, Apache, and Nginx — all in one click.

👉 GitHub Repository:

https://github.com/hosteons/Fail2Ban-Auto-Installer-With-Jail

✅ Key Features

Installs Fail2Ban on Ubuntu, Debian, AlmaLinux, and CentOS
Detects installed services (e.g., sshd, nginx, apache) and enables jails accordingly
Skips jails for services not found on the system
Handles log file paths intelligently based on distro
Verifies and restarts Fail2Ban only if configuration is valid
Smart checks if Fail2Ban is already installed
Minimal and safe — logs errors clearly

🧠 How It Works

When you run the script:

It detects your Linux OS flavor.
Installs Fail2Ban (if not already installed).
Checks if apache, nginx, or sshd is active.
Adds only the appropriate jails with correct log paths.
Restarts Fail2Ban and confirms its status.
Provides clear output so you know it’s working.

This ensures Fail2Ban doesn’t fail due to missing log files or services — a common issue in manual configurations.

📥 How to Use

Download the script:

wget https://raw.githubusercontent.com/hosteons/Fail2Ban-Auto-Installer-With-Jail/main/fail2ban_auto_installer.sh
chmod +x fail2ban_auto_installer.sh
./fail2ban_auto_installer.sh

That’s it. The script handles the rest!

🚀 Need a Secure VPS?

This script runs perfectly on our KVM VPS and Ryzen VPS plans. Visit hosteons.com to explore secure hosting powered by NVMe SSD and DDoS protection — with native support for IPv6, WireGuard VPN, and more.

🔗 Related Resources

🛡️ Harden Your Linux Server in Minutes with Our One-Click Script

hosteons May 28, 2025 Leave a Comment

Secure Your VPS with Ease — Now on GitHub!

Managing a Linux server? Whether you’re running Ubuntu, Debian, CentOS, or AlmaLinux — one of the first steps after setup should be hardening your system against attacks.

At Hosteons, we’ve created a powerful yet easy-to-use Linux Hardening Script that automates the most essential security tasks. Best of all — it’s completely open-source under the MIT License.

🔧 What Does the Script Do?

Our script walks you through an interactive setup process that includes:

✅ Changing the default SSH port

✅ Disabling root SSH login (optional)

✅ Creating a new sudo-enabled user (if root login is disabled)

✅ Installing and configuring Fail2Ban to block brute-force attacks

✅ Installing and initiating a Lynis audit for best practices

✅ Enabling and configuring UFW (Ubuntu/Debian) or Firewalld (CentOS/AlmaLinux)

✅ Handling SELinux if enabled

✅ Updating all system packages

All steps are automated and clearly explained during the process.

🚀 Why Harden Your Server?

Running a public-facing server without basic security is like leaving your front door open. Common exploits target:

Default SSH ports
Password-authenticated root logins
Unpatched packages
Open ports and misconfigured firewalls

This script helps new VPS users and sysadmins apply battle-tested security practices without manual work.

📝 How to Use It

SSH into your server
Download the script:

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

Follow the prompts — it’s fully interactive and safe

💡 Disclaimer: Changing SSH ports and disabling root login may lock you out if you’re not careful. Always have VNC, IPMI, or another form of console access ready.

📦 Open Source & Free

This project is licensed under the MIT License and developed by Hosteons.com to help the Linux and VPS community.

We welcome contributions and feedback!

🔗 Try it now:

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

How to Change Your SSH Port Safely on Any Linux Server (Ubuntu, Debian, CentOS, AlmaLinux)

hosteons May 26, 2025 May 26, 2025 Leave a Comment

Changing your SSH port is a simple yet powerful way to reduce brute-force login attempts and improve server security. To make this process easier, Hosteons offers a free Bash script that automatically handles the switch across all major Linux distributions — including firewalls and SELinux!

✅ Supported Operating Systems

Ubuntu 20.04 / 22.04
Debian 11 and above
CentOS 7 / 8
AlmaLinux 8 / 9

⚠️ Important Disclaimer

Changing your SSH port can lock you out if anything goes wrong.

Make sure you have console access such as VNC, IPMI, or KVM before using this script.

🔧 What the Script Does

Prompts until a valid SSH port is provided
Edits /etc/ssh/sshd_config to set the new port
Adds firewall rules for:
- UFW (Ubuntu/Debian)
- firewalld or iptables (CentOS/AlmaLinux)
Handles SELinux with semanage if needed
Restarts SSH service safely without reboot

🧰 How to Use the Script

SSH into your VPS or server as root
Run the following commands:

wget https://raw.githubusercontent.com/hosteons/SSH-Port-Changer-Script/main/ssh_port_changer.sh
chmod +x ssh_port_changer.sh
./ssh_port_changer.sh

Enter your desired new SSH port when prompted

📦 Download from GitHub

Access the script and full documentation here:

👉 https://github.com/hosteons/SSH-Port-Changer-Script

How to update SSH Port in CentOS 7

hosteons May 27, 2018 May 27, 2018 Leave a Comment

Here are few simple steps on how to update SSH Port in CentOS 7 VPS or Dedicated Server

Edit the SSHD configuration file :

nano -w /etc/ssh/sshd_config

(if nano is not installed use any other text editor or install it with yum -y install nano)

and change the Port number from 22 to any custom port you choose :

e.g. Port 18989

Make sure to even remove the # mark before Port

Save the config file

SELinux is enabled by default in CentOS 7 so you need to even inform SELinux to change the SSH Port else it won’t allow you to restart SSHD with new Port.

To run semanage for updating SSHD Port you nee to first install policycoreutils, install it with :

yum -y install policycoreutils-python

now update SeLinux policy to allow new port for SSH service. to do this, run below :

semanage port -a -t ssh_port_t -p tcp 18989

now you need to update Firewall policy to allow new SSH Port, to do this run below :

firewall-cmd –permanent –zone=public –add-port=18989/tcp
firewall-cmd –reload
systemctl restart sshd.service

SSHD Port is now updated, you can now connect to your new SSH Port: 18989

Upgrade to Kernel 4.x on CentOS 6/CentOS 7/ RHEL 7

hosteons May 24, 2018 May 24, 2018 Leave a Comment

Kernel 4.x is highly optimised and gives a lot of boost in performance to all Linux servers, here are few simple commands to upgrade your Kernel to 4.x on your CentOS 6 / CentOS 7 / RHEL 7 VPS (It will work with any KVM Based VPS like the ones provided by hosteons.com) or Dedicated server :

CentOS 6 / RHEL 6:

rpm –import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org

rpm -Uvh http://www.elrepo.org/elrepo-release-6-8.el6.elrepo.noarch.rpm

yum install yum-plugin-fastestmirror

yum –enablerepo=elrepo-kernel install kernel-ml

Now update /etc/grub.conf and make sure the new kernel 4.x is selected as default kernel and just reboot your VPS/Dedicated Server to use the new kernel.

CentOS 7/RHEL 7:

rpm –import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org

rpm -Uvh http://www.elrepo.org/elrepo-release-7.0-3.el7.elrepo.noarch.rpm

yum install yum-plugin-fastestmirror

yum –enablerepo=elrepo-kernel install kernel-ml

Now update /etc/grub.conf and make sure the new kernel 4.x is selected as default kernel and just reboot your VPS/Dedicated Server to use the new kernel.