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Pablo Gallardo's Blog
My professional web log about IT, Cybersecurity & Project Management
 
Tag Archives | system

How to install JRE or JDK in Ubuntu

This post explains how to install or update Java components JRE or JDK in operating system Ubuntu. It may be compatible with other Debian-like or Ubuntu-like Linux distros, like Linux Mint, etc.   Step-by-step Procedure 1. Install repository Open a terminal. Install repository from command line: sudo add-apt-repository ppa:<repositoryaddress> The repositories I found were (you […]

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Encryption Algorithms

    Symmetric Key Cryptographic Systems Data Encryption Standard (DES) Triple DES (3DES) Advanced Encryption Standard (AES) Rivest Ciphers (RC) family RC4 RC5 RC6 Blowfish Twofish International Data Encryption Algorithm (IDEA) Skipjack CAST family CAST-128 CAST-256 Serpent Camellia Kuznyechik Asymmetric Key Cryptographic Systems Rivest Shamir Adleman (RSA) Merkle-Hellman Knapsack Elliptic Curve Cryptography (ECC) Diffie-Hellman ElGamal […]

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List of file systems

List of file systems FAT A very old file system, based on 12 or 16 bits. It was replaced in more modern system by FAT32, and eventually by the current filesystems (ext4 for GNU/Linux and macOS X, NTFS for Windows). FAT32 It is probable the most compatible file system of all, readable and writable on […]

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How to install Windows XP

Disclaimer about Windows XP Windows XP is an operating system that is lacking official support from Microsoft since April 8, 2014. IT IS NOT RECOMMENDED TO USE THIS OPERATING SYSTEM ANYMORE. There are multiple known vulnerabilities that exposes your computer to security threads and viruses. You are not only posing yourself to a risk, but […]

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Firewall Architectures

Types of network segments According to its privacy, there are different types of network segments: Public networks Internet Private networks Extranet Intranet The internet is publicly available for any user. An intranet hosts information privately only for users within an organization. The services are placed on internal servers. An extranet is a cross between the […]

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How to install an Android-based OS in an Android device

This post is about how to install an Android-based OS (like LineageOS, Replicant, /e/, etc.) in an Android device that has installed Android device. It intends to be generalist and give an overview of the most common steps, and not to dive into details. Basic Concepts adb adb stands for Android Debug Bridge. It is […]

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