IT Notes for Reference

Mandatory access control (MAC) -The most basic form of access control involves assigning labels to resources and accounts (ex. SENSITIVE, SECRET and PUBLIC). Also referred to as multilevel access control. Discretionary access control (DAC) - A slightly more complex system of access control involves restricting access for each resource in a discretionary manner.  DAC scenarios allow individual resources to be individually made available or secure from access. Access rights are configured at the discretion of the accounts that have the authority over each resource, including the capability to extend administrative rights through the same mechanism. In DAC, a security principal (account) has complete control over the objects that it creates or otherwise owns, unless this is restricted through group or role membership. The owner assigns security levels based on objects and subjects and can make his or her own data available to others as desired. A common scenario for DAC is online soci...

I recently installed Raspbian Buster on a new RaspberryPi 4 PC and noticed that the mouse pointer within the operating system was performing very poorly.  After searching online I was enlightened to find out that the quick fix was to edit the cmdline.txt file located in the boot directory. 1. Either start a BASH instance in Raspbian or SSL into the Raspbian instance(After SSL is enabled in Raspbian) 2. At the BASH prompt command line, enter:          sudo nano /boot/cmdline.txt This will open the nano text editor so cmdline.txt can be edited. 3. Add the following entry at the end of all the text that is already there:     usbhid.mousepoll=0 4. Save the current state of the file by entering Ctrl+O 5. Exit the nano text editing instance by entering Ctrl+X 6. Make sure you do a reboot of your Raspbian instance by typing in: sudo reboot in BASH. You can also do a manual reboot if your within the GUI interface as well.