Reverse Shell is useful to pass through router and firewalls that may allow outbound connections […]
SSH Audit Server and Client Ubuntu
Installing the SSH Audit tool: sudo snap install ssh-audit OR pip3 install ssh-audit OR docker […]
Reverse Proxy with NGINX and SSL/TLS (Let’s Encrypt)
In this tutorial, we will go through: Install and configure NGINX, Install and configure SSL/TLS, […]
Setting Up SELinux on Ubuntu
SELinux is an upgrade to the file system that creates labels to enhance the policies […]
SED Cheat Sheet – Stream Editor with RegEx
Sed is a text/string editor command-line tool. Follow the most basic commands: sed ‘s/LOOKFOR/REPLACE/‘ file.txt […]
Installing cPanel + WHM on Ubuntu
The only drawback of cPanel is that it’s neither open-source nor free. The same is […]
S3CMD Cheat Sheet for Amazon S3 Object Storage
Installation: sudo apt update sudo apt install s3cmd -y OR sudo apt install python3-pip sudo […]
E-mail Backup Server with Postfix on Ubuntu
Add another MX record on the domain DNS with a priority different (e.g. 10) from […]
Configuring IP Manually and Removing IPv6 from a Linode VM
In order to set up an Active Directory / Domain Controller on the cloud assigning […]
Linux Active Directory / Domain Controller (AD-DC) with Zentyal
Zentyal is an open-source email and groupware solution. It has its own Ubuntu-based distribution but […]