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today's howtos

Submitted by Roy Schestowitz on Saturday 29th of January 2022 11:18:21 PM Filed under
HowTos
  • How to use Nmap to scan for open ports

    The Nmap network reconnaissance and security auditing tool, released in 1997, is one of the most basic and most used cybersecurity tools today. From its beginnings as an advanced port scanner, it evolved into a multifunctional tool with a family of useful projects that can discover weak passwords, scan IPv6 addresses, perform IP address geolocation, detect vulnerabilities and more.

    The open source tool helps security pros, networking teams, sys admins and other IT personnel scan hosts, networks, applications, mainframes, Unix and Windows environments, supervisory control and data acquisition systems, and industrial control systems.

  • Nmap use cases, tools and product comparisons

    Nmap is one of the most well-known tools among the infosec community. "Some call it the Swiss Army knife for hacking," said Paulino Calderon, author and co-founder of Websec Mexico.

    At almost 25 years old, the network discovery and security auditing tool has come a long way since its inception. What was designed for network reconnaissance and port scanning has evolved to include a slew of subprojects, including Ndiff, Ncat and Zenmap.

    In his latest book, Nmap Network Exploration and Security Auditing Cookbook, Third Edition, Calderon offers insights into the tool and its use cases -- real-world tips he learned by not only using the tool in his everyday work, but also as a developer with the project since 2011.

  • An Essential Guide to Kubernetes Observability Challenges with Pixie

    Decentralized systems observability has always been challenging. Dealing with latency, distributed transactions, failures etc. became increasingly complex. The more abstraction a decentralized system has, the more difficult it is to reason about it, debug and troubleshoot.

  • How to play Xvid files or convert them

    Xvid is a codec that is designed to highly compress video files using the MPEG-4 Part 2 ASP format. Xvid is a free file format distributed under the GNU General Public License (GPL), so it's not uncommon to encounter this kind of file when downloading video online.

    [...]

    If you want to convert an Xvid file to another format, there are a number of options to choose from. If you are looking for a fast and free option, try one of the numerous online converters. These converters are hosted in a website; just upload the Xvid file, click the button to start the conversion process, and download the converted file. It generally takes a few minutes to convert, depending on the size of the original Xvid file. Two common converters include Convertio and Office-Converter.

  • How chmod numbers work explained

    If you work in a Unix based environment, a firm understanding of how chmod numbers work is required.

    For example, you need to know that 777 is a very dangerous permission to provide, that a 664 is a good mode change for the html directory on an Apache web server, and that a chmode number of 898 makes no sense whatsoever.

  • Transparently Patching PWNKIT with Ksplice
  • Install Neofetch on CentOS 8

    In this article we will learn how to Install Neofetch on CentOS 8. Neofetch is a free and opensource command-line tool that displays system and hardware information in a visually appealing manner. Neofetch shows the very basic information you might need to know such as the type of operating system you are running, screen resolution, the kernel, installed packages, memory, and uptime to mention a few. This information is displayed along with your OS logo.

  • How To Install Firefox on Debian 11 - idroot

    In this tutorial, we will show you how to install Firefox on Debian 11. For those of you who didn’t know, Firefox is a free and open-source web browser developed by the Mozilla Foundation and its subsidiary, Mozilla Corporation. Firefox is featured on nearly all Linux distributions as the primary browser or secondary.

    This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you through the step-by-step installation of the Mozilla Firefox browser on a Debian 11 (Bullseye).

  • How to Install and Test a Web Server in Chromebook Linux

    The Chromebook Linux environment (Crostini) is a great tool for development, and it's especially good for web development. It's easy to install a web server to test your web page right from your Chromebook before deploying it to a production server. Here's how to do it.

  • How to Use the Synology Audio Station

    Audio Station is the audio player app of Synology. You can use it from the DSM 7 web interface. The Audio Station is used to manage audio playlists of your Synology NAS audio playlists and stream them. You can also use Audio Station to share audio with other people.

»

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today's howtos

  • How to install go1.19beta on Ubuntu 22.04 – NextGenTips

    In this tutorial, we are going to explore how to install go on Ubuntu 22.04 Golang is an open-source programming language that is easy to learn and use. It is built-in concurrency and has a robust standard library. It is reliable, builds fast, and efficient software that scales fast. Its concurrency mechanisms make it easy to write programs that get the most out of multicore and networked machines, while its novel-type systems enable flexible and modular program constructions. Go compiles quickly to machine code and has the convenience of garbage collection and the power of run-time reflection. In this guide, we are going to learn how to install golang 1.19beta on Ubuntu 22.04. Go 1.19beta1 is not yet released. There is so much work in progress with all the documentation.

  • molecule test: failed to connect to bus in systemd container - openQA bites

    Ansible Molecule is a project to help you test your ansible roles. I’m using molecule for automatically testing the ansible roles of geekoops.

  • How To Install MongoDB on AlmaLinux 9 - idroot

    In this tutorial, we will show you how to install MongoDB on AlmaLinux 9. For those of you who didn’t know, MongoDB is a high-performance, highly scalable document-oriented NoSQL database. Unlike in SQL databases where data is stored in rows and columns inside tables, in MongoDB, data is structured in JSON-like format inside records which are referred to as documents. The open-source attribute of MongoDB as a database software makes it an ideal candidate for almost any database-related project. This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of the MongoDB NoSQL database on AlmaLinux 9. You can follow the same instructions for CentOS and Rocky Linux.

  • An introduction (and how-to) to Plugin Loader for the Steam Deck. - Invidious
  • Self-host a Ghost Blog With Traefik

    Ghost is a very popular open-source content management system. Started as an alternative to WordPress and it went on to become an alternative to Substack by focusing on membership and newsletter. The creators of Ghost offer managed Pro hosting but it may not fit everyone's budget. Alternatively, you can self-host it on your own cloud servers. On Linux handbook, we already have a guide on deploying Ghost with Docker in a reverse proxy setup. Instead of Ngnix reverse proxy, you can also use another software called Traefik with Docker. It is a popular open-source cloud-native application proxy, API Gateway, Edge-router, and more. I use Traefik to secure my websites using an SSL certificate obtained from Let's Encrypt. Once deployed, Traefik can automatically manage your certificates and their renewals. In this tutorial, I'll share the necessary steps for deploying a Ghost blog with Docker and Traefik.

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