Last Day of 220-1001
Managing Users and Permissions
root (Linux) == System (Windows)
Authentication and Authorization
NIST Digital Identity Guidelines –
https://pages.nist.gov/800-63-3/sp800-63b.html
On Password Complexity: Sorry! –
https://gizmodo.com/the-guy-who-invented-those-annoying-password-rules-now-1797643987
Windows Groups
gpedit.msc
Using Windows 10 Home? Use this script to install gpedit.msc:
https://www.majorgeeks.com/content/page/enable_group_policy_editor_in_windows_10_home_edition.html
Administrators
Power Users
Users
Guests
lusrmgr.msc
Using Windows 10 Home? This snap-in won’t work on that version.
NTFS Permissions
Folders vs Files
Full Control
Modify
Read & Execute
List Folder Contents (folders only)
Read
Write
Inheritance
Linux & Mac Permissions
User, Group and Other (World)
r = 4
w = 2
x = 1
To see U, G and O permissions:
ls -la
Changing ownership (User or Group), and changing permissions (access mode)
chown <username> <filename> or chown <username>:<groupname> <filename> chmod 755 <filename> or chmod +x <filename>
Sharing Folders (Windows)
Sharing tab (NetBIOS sharing)
Security tab (NTFS sharing)
The Sharing Wizard
Administrative Shares
Encryption (Windows)
EFS (for one folder)
Bitlocker (for the whole hard drive)
Truecrypt –> Defunct and Gone!
Security Policy (Windows)
Runline: secpol.msc
–> You may need to enable this utility, if you’re using Windows 10 Home. See this page: https://www.majorgeeks.com/content/page/how_to_enable_local_security_policy_in_windows_10_home.html
Windows User Account Control
UAC
Vista – On or Off
Win 7 – 4 levels – default is the second-from-top option
OS Maintenance
Patches, Updates, Service Packs
Windows Disk Maintenance
Scandisk was used in DOS, Win 95, Win 98, Win ME — BUT IS NOT USED ANY MORE! If you see scandisk as an answer it’s a decoy (red herring).
scandisk
Chkdsk (“Check Disk”) is used in all modern versions of Windows.
chkdsk
Disk Defragmenter – Win 7
defrag
Optimize drives – Win 8 and later
macOS Disk Maintenance
Disk Utility
Linux Disk Maintenance
fsck
Scheduling Tasks
Windows: Task Scheduler
Linux Task Scheduling
# Run a job on a regular, repeating cycle: cron # Run a job once at a specific time: at
macOS Task Scheduling
launchd
Backups
Backup and Restore – Win 7
ntbackup
File History – Win 8/10
Time Machine – Mac
Amanda and Backula – Linux
Software Installation
Microsoft Store
macOS App Store
Linux App Installation:
# On Debian-based OSs: apt # On RedHat-based OSs: yum
Device Manager
Access it from:
Control Panel –> Device Manager
or
Runline –> Device Manager
or
Computer Management console –> Device Manager
Performance Options
Windows Performance Monitor
Runline: perfmon
Sysinternals Task Manager
Runline: procmon
Textbook Time
Chapters 13 and 14