HARDN – The Linux Security Project

Our complete open source cyber security solution

Git:

https://lnkd.in/ddQPVp-a

Web:

https://lnkd.in/dmtjqGYz
(https://cybersynapse[.]ro/HARDN.php)

The HARDN Linux project is an open-source effort aimed at making Debian Linux systems more secure and efficient. With a focus on modular design and automation, it uses research-driven methods to strengthen system defenses, fix vulnerabilities, and boost performance.

Practice Verified Codes and Commands

1. Install HARDN on Debian:

wget https://cybersynapse.ro/HARDN.php -O HARDN.sh
chmod +x HARDN.sh
sudo ./HARDN.sh

2. Check System Vulnerabilities:

sudo apt-get update
sudo apt-get upgrade
sudo apt-get dist-upgrade

3. Automate Security Patches:

sudo apt-get install unattended-upgrades
sudo dpkg-reconfigure --priority=low unattended-upgrades

4. Enable Firewall:

sudo ufw enable
sudo ufw status verbose

5. Monitor System Logs:

sudo tail -f /var/log/syslog

6. Check for Open Ports:

sudo netstat -tuln

7. Scan for Rootkits:

sudo apt-get install rkhunter
sudo rkhunter --check

8. Audit System with Lynis:

sudo apt-get install lynis
sudo lynis audit system

9. Secure SSH:

sudo nano /etc/ssh/sshd_config

<h1>Change Port to a non-default port</h1>

<h1>Disable root login: PermitRootLogin no</h1>

sudo systemctl restart sshd

10. Backup Important Files:

sudo tar -czvf /backup/backup.tar.gz /etc /home

What Undercode Say

The HARDN Linux project is a significant step forward in enhancing the security of Debian-based systems. By focusing on modular design and automation, it addresses common vulnerabilities and improves system performance. The project’s open-source nature allows for community-driven improvements and transparency, which are crucial in the cybersecurity domain.

To further secure your Linux system, consider implementing the following commands and practices:

• Regularly Update Your System:

  sudo apt-get update && sudo apt-get upgrade -y
  

• Use Strong Passwords:

  sudo passwd username
  

• Enable Two-Factor Authentication (2FA):

  sudo apt-get install libpam-google-authenticator
  google-authenticator
  

• Monitor User Activity:

  sudo last
  

• Check for Unauthorized Changes:

  sudo debsums -c
  

• Use SELinux or AppArmor:

  sudo apt-get install selinux-basics selinux-policy-default
  sudo selinux-activate
  

• Regularly Backup Data:

  sudo rsync -a --exclude={'/proc','/sys','/dev'} / /backup/
  

• Scan for Malware:

  sudo apt-get install clamav
  sudo freshclam
  sudo clamscan -r /home
  

• Disable Unnecessary Services:

  sudo systemctl list-unit-files --type=service
  sudo systemctl disable servicename
  

• Use Encrypted Communication:

  sudo apt-get install openssl
  openssl req -new -x509 -days 365 -nodes -out /etc/ssl/certs/server.crt -keyout /etc/ssl/private/server.key
  

By following these practices, you can significantly enhance the security and performance of your Debian-based systems. The HARDN project provides a robust framework for achieving these goals, and its open-source nature ensures continuous improvement and community support.

For more information, visit the official HARDN project page: HARDN Project and the Git repository: HARDN Git.

References:

initially reported by: https://www.linkedin.com/posts/razvan-alexandru-ionica-00a543146_linux-activity-7301775865799962624-TRx6 – Hackers Feeds
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