Tag: Ubuntu

  • Cheatsheet of useful Linux commands

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    Last update: Nov 2024 Motivation I am using this for noting my snippets for everyday use. Mostly those commands are tested and developed on latest Ubuntu. Warning Many of those commands here are dangerous and will potentially mess up your system. Be warned: Don‘t use them if you do not know what you‘re doing! Secure…

  • How to: Install PiHole (DNS-Adblocker) and PiVPN (Wireguard) on Ubuntu

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    Metadata Tested with: Ubuntu 24.04, PiHole 5.18.3, PiVPNLast Update: Nov 2024 Requirements 1. Install PiVPN 2. Install PiHole 3. Add powerful adlists Further Configuration Keep in mind that the default setting for WireGuard is ALLOWED_IPS=”0.0.0.0/0, ::0/0″. This means all traffic will be sent through the VPN tunnel. If you plan to make just some specific…

  • How to: Install VirtualBox 7.1 on Ubuntu 24.04

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    Preparation none Tested with Tested on: Kubuntu 24.04, VirtualBox 7.1Last Update: 2024-10-15 Environment Steps We will install the packages by adding the official repository and installing the packages from there. 1. Adding repository 2. Installing packages 3. Installing Secure Boot Key During reboot you will be asked by UEFI BIOS to enroll the VirtualBox key:…

  • How to: Dualboot Windows +Bitlocker and Ubuntu +LUKS

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    Preparation Tested with Tested with: Win 11 Pro 23H2, Ubuntu 23.10Last Update: 2024-09-26 Environment Steps 1. Create partitions 2. Install Windows 3. Install Ubuntu Both systems can boot up properly now. You will be asked by GRUB which operating system to boot now: Ubuntu or Windows Boot Manager. 4. Activate Windows Bitlocker Good to know…

  • How to: Monitor network traffic from a device (mobile phone, tablet, notebook)

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    Meta Last update: Feb 2021Tested on: Ubuntu 20.04 Foreword In this tutorial we will use a regular computer with two USB wifi adapters: one for the connection to our internet/wan and the other one for creating our local wifi hotspot. You can substitute one of the wifi adapters with an ethernet adapter of course. I’m…

  • How to: Install a privacy friendly Jitsi Meet on Ubuntu and run it securely

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    Meta Last update: Jan 2021Tested with: Ubuntu 21.04 and 18.04 Prerequisites If you intend to run Jitsi on your new publicly accessible server, reachable under meet.yourdomain.com, you should change the name of your host accordingly in both files and reboot your machine: These instructions also take care of the TLS certificate. If the server is…

  • How to: Backup or sync files with 7-Zip CLI

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    Last update: Dec 2017 Motivation Sometimes we just want to backup files with very simple tools in order to keep it simple and stupid. Although it’s well documented, many people do not know, that the 7-Zip command line tool can also update the backup target in case some files changed within the source. Environment Requirements…

  • How to install XFCE and VNC on a headless Ubuntu 18.04

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    Latest update: Dev 2019 I’ve tested some tutorials on the internet which guide through the installation of VNC. Unfortunately some of them just didn’t work out therefore I’m writing down the current way that works flawlessly. Prerequisites:– Freshly installed Ubuntu 18.04 server edition (headless installation – no GUI).– We assume all commands are typed in…

  • How to: Create and open an encrypted Ubuntu Linux 18.04 server with Dropbear through SSH

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    Meta Last update: Dec 2019Tested with: Ubuntu 18.04 Some of you are security-aware and would like to install a full disk encryption on a new system. But you’ll face a problem: Once the machine reboots and you’re not around to type in the password, the machine will simply not boot up. For come over that…