Author: Tom's IT Cafe

A shadow in the digital world, bringing bold operational security strategies to those who value anonymity. I talk about security, but I never leave a trace.

Mastering Docker Networking: Exposing Ports Only to Other Containers

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Docker networks are virtual networks created by Docker to enable communication between Docker containers, allowing them to connect to and communicate with each other or to non-Docker workloads. Containers inside the Docker network can talk to each other by sharing packets of information, and each container sees a network interface with an IP address, a gateway, a routing table, DNS services, and other networking details. By default, the container gets an IP address for every Docker network it attaches to, and when a container starts, it can only attach to a single network, using the –network flag. However, you can connect a running container to multiple networks using the docker network connect command.

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HashCat for Ethical Hacking: A Powerful Tool for Password Cracking

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Disclaimer: This article is for educational purposes only. Hacking, unauthorized access, and any malicious activities are illegal and unethical. The intention of this article is to provide insights into ethical hacking practices within legal boundaries. We strongly discourage any illegal activities.

In ethical hacking, security professionals utilize an array of tools to assess and fortify the security of digital systems. One such tool that stands out is Hashcat, a powerful password cracking/recovery utility. Hashcat enables ethical hackers to uncover vulnerabilities in systems by attempting to crack hashed passwords, allowing organizations to identify weak passwords and bolster their defenses.

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Configuring Tenable Nessus Essentials for Daily Security Checks in Small Companies

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In the digital age, small companies are increasingly becoming prime targets for cyber criminals due to their often limited security resources and vulnerabilities. To safeguard their digital assets and sensitive data, it is crucial for small companies to conduct regular security checks. Tenable Nessus Essentials, a powerful vulnerability scanner, is an ideal solution for these companies to enhance their security posture. In this post, we will explore how to configure Tenable Nessus Essentials for daily security checks, empowering small companies to proactively detect and address potential threats.

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The Emergence of Purple Teams: Bridging the Gap in Cyber Security Practices

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In the dynamic world of cybersecurity, organizations are continually striving to stay one step ahead of cyber threats. Among the strategies employed is the concept of Purple Teams, which seeks to combine the strengths of both Red and Blue Teams. While this approach appears promising, some concerns have arisen about their productivity. In this blog post, we will explore the role of Purple Teams, their potential benefits, and the factors that may hinder their productivity.

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Running Rundeck and Ansible in Podman with a MySQL Backend and Podman-Compose: A Comprehensive Guide

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In today’s ever-evolving IT landscape, the need for self-service automation and precise scheduling has become significant. Enter Rundeck and Ansible, two formidable tools that empower organizations to speed up their infrastructure management. When combined with the containerization capabilities of Podman and the orchestration provided by Podman-Compose, you can create a robust automation environment that not only simplifies self-service tasks but also enables precise scheduling.

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Setting Up an SBCL Common Lisp Development Environment With Emacs and SLIME on Debian Linux in 2023

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Common Lisp is a powerful and versatile programming language known for its expressive syntax and rich ecosystem of libraries. If you’re a seasoned Linux user, particularly on Debian-based distributions like Debian itself or Ubuntu, setting up a Common Lisp development environment with Emacs using SBCL (Steel Bank Common Lisp) is a straightforward process. I write this article because despite the elegance and functionality of Common Lisp the user base of the language is constantly shrinking.

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The Art of Ethical Hacking: Beyond Brute Force and Password Cracking

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In the technological art of cybersecurity, ethical hackers play a crucial role in safeguarding digital assets and personal information from malicious actors. Ethical hackers, also known as white hat hackers, utilize their skills to uncover vulnerabilities and weaknesses in systems, applications, and services, ultimately enhancing security. Contrary to popular belief, their approach extends far beyond brute force and password cracking.

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Understanding Kubernetes and Docker: A Beginner’s Guide for DevOps

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In the world of DevOps, two buzzwords that frequently come up are Kubernetes and Docker. Both technologies have revolutionized the way applications are developed, deployed, and managed. While they are often used together, they serve different purposes and have distinct roles in the modern software development landscape.

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A Deep Dive into Ansible Vault: Safeguarding Your Sensitive Data

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Ansible Vault is a feature of Ansible that allows you to encrypt sensitive data such as passwords or keys in encrypted files, rather than as plaintext in playbooks or roles. This provides the ability to secure any sensitive data that is necessary to successfully run Ansible projects. Ansible Vault uses the AES 256 algorithm to provide symmetric encryption, which means that it uses the same password for encrypting and decrypting files. The ansible-vault command is the main interface for managing encrypted content within Ansible, and it is used to initially encrypt files and subsequently used to view, edit, or decrypt the data. Ansible Vault is especially useful if you have confidential data that you want to secure and prevent from being publicly exposed.

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Exploring Org Mode in Emacs: A Productivity Powerhouse

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Emacs, the extensible text editor that has been a cornerstone of the developer and programmer community for decades, is renowned for its flexibility and customization. Among its vast array of features and plugins, one stands out for its unparalleled ability to streamline tasks, manage information, and boost productivity – Org Mode.

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Rundeck Unleashed: Accelerating DevOps Workflows with Self-Service Empowerment

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As DevOps practitioners, we’re always on the lookout for new tools that can help us streamline our workflows and improve our processes. One such tool that we’ve recently been exploring is Rundeck, an open-source automation platform that can help us manage and execute our jobs and tasks more efficiently.

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Building Podman Debian Images With Systemd Inside The Container

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Containerization has revolutionized the way software is developed, tested, and deployed. While Docker has been a popular choice for containerization, Podman has emerged as a viable alternative, especially for users who prefer a rootless, daemonless, and more secure container experience. In this blog post, we will explore how to build Debian-based container images using Podman while integrating systemd inside them. This allows you to run services and manage them using systemd, just like you would on a traditional server.

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A Guide For Configuring and Hosting an In-House Docker Registry

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Docker has revolutionized the way we build, ship, and run applications by containerizing them. One critical component of a well-managed container ecosystem is a Docker registry. While Docker Hub is a popular choice for hosting container images, there are compelling reasons to set up an in-house Docker registry. In this guide, we will walk you through the steps to configure and host your own Docker registry, ensuring control, security, and efficiency in your containerized environment.

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Securing Ansible Automation with Single Entry Points: SSH Jump Hosts

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Using SSH jump hosts (also known as bastion hosts or SSH gateways) with Ansible allows you to securely access and manage servers in a remote network or behind a firewall. Jump hosts act as intermediaries, forwarding your SSH connection to the target hosts. You can configure Ansible to use jump hosts for managing remote servers. Here’s how to set it up:

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