How do I fix the GPG error “NO_PUBKEY”?
I recently added some extra repositories with the Mysterium network and received this error when I reloaded the apt package database: To fix this, I found to execute the following…
Linux Download: Top 12 Free Linux Distributions for Desktop and Servers
All the Linux distributions are either derivatives of GNU/Linux ( OS made up of Linux Kernel developed by Linus Torvalds and GNU software repository) or derived from other Linux derivatives.…
Hardening SSH with Ansible
This blog post is going to be about hardening your SSH config with Ansible. This guide will be built upon my earlier post about Updating your Homelab with Ansible and…
CentOS 8 Early EOL in 2021 and CentOS Stream
CentOS 8 Early EOL in 2021 and CentOS Stream The CentOS 8 life cycle has been cut short with the news of its EOL in December 2021. RHEL revealed it…
Ukraine – Kyiv (Kiev) – Digital Forensics
o, I have decided to start documenting my Cyber Security skills and what I can bring to the table for a situation. This one is going to be a work…
TCP vs UDP
Here, we will compare these two protocols’ main characteristics, and we will look at TCP Protocol (Transmission Control Protocol) and UDP Protocol (User Datagram Protocol). This comparison is very important…
OSI Model And 7 Layers Of OSI Model Explained
The Open Systems Interconnection model (OSI model) is a conceptual model that characterizes and standardizes the communication functions of a telecommunication or computing system without regard to its underlying internal…
What is SSH?
What is SSH? SSH, or Secure Shell or Secure Socket Shell, is a network protocol that gives users, particularly system administrators, a secure way to access a computer over an…
How To Use Proxy chains with Kali Linux
Proxy chains are open source software for Linux systems and come pre-installed with Kali Linux, the tool redirects TCP connections through proxies like TOR, SOCKS, and HTTP (S), allowing us…
How to Install Ubuntu 20.04 LTS Desktop (Focal Fossa)
Introduction Ubuntu 20.04 (codenamed Focal Fossa) was released on April 23, 2020. It is a Long-Term Support (LTS) release, which will receive support and updates until April 2025. This guide…