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Read moreCategory: Cybersecurity
Browse our Cybersecurity technical articles here. We’re sharing our knowledge with fellow cybersecurity practitioners in the hope that we can all progress further and faster in protecting our information systems.
A Quick Understanding of Cipher Suites
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
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Windows Built-In VPN to pfSense
This article demonstrates the settings required on Windows and pfSense to get a Windows Built-In VPN to work between the two. It’s actually pretty easy. This article is more a confirmation of settings than a guide. Make sure you have the firewall rules configured on the pfSense WAN interface. We’re
Read moreBackups Are 1% Of The Solution
The title is a little provocative, but hear me out. My argument is that in most situations, resorting to restoring data from backups means the project or business is already in an untenable position. Suppose Kym from the Accounts department overwrites a document and asks for the file to be
Read moreExpand 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
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
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Windows 10/11 Minimum Security Settings to Check
This article is a check list of the critical items to check to ensure your computers are baseline secure. Of course, baseline is something you should determine, not me. Here;s a quick list. You may be able to use InTune to manage these items and more. Windows Updates Make sure
Read moreEnforcing 2FA Defaults on Azure and Enforcing on Office 365
This article demonstrates how to enforce 2FA for users of Azure and Office 365. Depending on your license levels, you may not get all the settings that Microsoft article recommend, so this article covers the bare minimum. Microsoft has an overarching enforcement settings which needs to be set (although it
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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