This article explains the structure of a cipher suite. A cipher suite is a description of a combination of cryptographic algorithms that a system supports, expects or proposes. The description includes a means to create and exchange asymmetric keys, the type of symmetric keys to use, and the hashing algorithm
Read moreCategory: Linux
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Expand a LUKS Encrypted Volume
This article demonstrates how to extent a LUKS encrypted volume. We’re using Ubuntu 22.04 and the volume is non-root. Although you could probably do the same on the root volume (partition). This is risky and you should not do this without a backup and understanding the likelihood of failure. This
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A Single Volume Versus Multi-Volume Disk Layout On Linux
This article discussed the differences between a single volume (/boot + /) and a multi-volume (/boot + / + /var + …). Or to put it another way, one volume with everything on it versus several volumes for different directories. There’s plenty of arguments for both sides. We’re basing our
Read moreDeleting the Bash History
There are times when you want to clear out the Bash history and make a clean start. Or perhaps you want to remove a single or select item/s from the Bash history. Both of these scenarios are accomplished as described below – although we’ll focus on clearing out the entire
Read moreCreating and Mounting Luks on boot
This article explains how to mount a Luks volume (encrypted) on boot. You’ll be asked for a password. There’s plenty of articles explaining how to do this with a crypt-key available, so I need not repeat their work. Here’s our scenario. Remember, this process is destructive. Follow this only in
Read moreCreating New Users & Placing SSH Keys on Ubuntu and CentOS/Redhat
This is a simple reminder to those creating user accounts on Linux systems with the expectation that the intended user will be able to log in using their SSH keys. There’s also instructions on adding them to the “sudoers” groups. Ubuntu & CentOS/Redhat Create the user and place their SSH
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Ansible AWX Targeting Windows via SSH – The details you might have missed
This article highlights some important details for those working with Ansible AWX. Specifically, when the target system/s are Windows based. The two options to target a Windows host is WinRM and SSH. SSH is easier. It just requires the OpenSSH Server “feature” to be installed which is a simple process.
Read moreBinding a Linux Machine to AD and Auto Creating User Home Directories
This article demonstrates how to join/bind a Redhat/CentOS or Ubuntu Linux system to an Active Directory domain, and auto creating user’s home directories as they login for the first time. Prepare and Join Linux to a Windows Domain Set the Hostname Check the hostname. This is the name that will
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Install NX NoMachine on Ubuntu 22.04
NX is an alternative to VNC allowing management of a remote system. NX is opensource (there’s a commercial version), supports encryption, and can be installed on Linux, Windows, and MacOS. This tutorial shows how to install NX on a Ubuntu server, and NX on a Windows 11 client. We’ll then
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Backup vTigerCRM on Synology (MySQL / MariaDB)
Synology include the vTiger CRM suite as a plugin/add-on. They didn’t include a backup solution though. This how-to described how to backup the vTiger CRM database. The idea is to dump the database regularly, into a place that some other backup process includes. For example, if you have a “Shared
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