Ramblings on IT and Security

Tag: Advanced (Page 3 of 3)

Upgrade MBR to GPT to enhance system security with UEFI

In the world of computing, the way we store and manage data is constantly evolving. One such significant change is the transition from the traditional Master Boot Record (MBR) system to the more modern GUID Partition Table (GPT) system. While both serve the critical function of telling our systems where data is stored and how to boot, GPT brings a host of advantages over its predecessor, from supporting larger disk sizes to improved data corruption handling.

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Security Descriptor Definition Language

During a recent 3-month security course, I was asked on my exam to construct a Security Descriptor Definition Language (SDDL) string for a Windows object. While I was able to come up with a valid string, the experience left me curious to explore the full extent of what SDDL could do. As I delved deeper into the topic, I discovered that SDDL is a powerful tool for managing permissions on Windows objects, allowing you to fine-tune access controls with precision. In this blog post, I’ll share my journey with SDDL, exploring its ins and outs, and demonstrating how you can use it to control access to various Windows objects, including services and folders.

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Managing SUDO from Active Directory

Welcome to the last of a three part series about Ubuntu and Active Directory. In my previous posts I explained how you could, in just a few steps, join an Ubuntu machine to an Active Directory domain and manage it accordingly. This time I’m addressing centralized management of sudo users. Meaning who can execute commands as sudo on managed Linux desktops (in my case Ubuntu).

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