Starlink is asking for a license for 5 million households instead of 1 million due to huge interest in satellite internet service. This may be a societal paradigm shift. ... https://www.youtube.com/watch?v=l8W8K51pEmc
Find diagrams and code at: https://www.elithecomputerguy.com/2019/06/arduino-uno-wifi-temperature-sensor/
You can use an Arduino Uno WiFi board to create sensors that are web accessible. This project allows you to read the temperature through a web browser.
Note: I found that the 5V pin on my Arduino Uno WiFi only actually outputs 4.85V. This means the temperature readings are off by about 5 degrees. Make sure to verify your project is reading the correct temperature, and if not tweak the math as need be.
Functional Parts in the Project:
Arduino WiFi Rev 2 – https://store.arduino.cc/usa/arduino-uno-wifi-rev2
Analog Temperature Sensor – https://amzn.to/2Rkkl3k
...
https://www.youtube.com/watch?v=yn5i_A4PT-g
Support Silicon Dojo at:
https://www.donorbox.org/etcg
http://www.silicondojo.com/
DNS for Cybersecurity
What is DNS
Maps name to IP address: cnn.com - 151.101.1.67
Threats to DNS
DNS Tracking
DNS Poisoning
Malicious Websites/ Malware
Employees…
HOSTS File
Local DNS Configuration
DNS in Router/ Modem
ISP’s and DNS Collecting data
ISP’s collect your traffic and sell it to advertisers
ISP’s may redirect bad URL’s
Public DNS
Google
8.8.8.8
8.8.4.4
Cloudflare
1.1.1.1
Websites Connecting to Other Sites
When you go to a website, many other sites are embedded in the page and your information can be collected.
https://developers.google.com/speed/pagespeed/insights/
Fingerprinting
https://privacy.net/analyzer/#accordion
https://www.whatsmybrowser.org/
Pi Hole
DNS Cacheing
Unbound Recursive DNS
Communicates with Authoritative DNS Servers
OpenDNS
https://signup.opendns.com/homefree/
DNSSEC
It’s a mess
DNS Security Problems
Can Cause Unexpected Problems
Do you know EVERY domain name your clients use?
Talk to your users
Can users change DNS Settings?
...
https://www.youtube.com/watch?v=Ah5wBBRArKA
Find code and diagrams at: https://www.EliTheComputerGuy.com
Colocation Datacenters allow you to rent space for your servers to run. You can rent from 1U of space to a dozen 42U racks for your equipment. Colocation facilities allow you to run your equipment in a certified datacenter environment even if your employees work in your basement.
Considerations
Space – You can rent from a single U to a Full Rack for your equipment
Power – Datacenter provide a number of Amps of total power. This can be as low as 1. Make sure your equipments power draw matches with what you are purchasing.
Networking – You will have options for Speed, Total Bandwidth Usage, number of IP Addresses, and use of specific Routing Protocols.
Security – If you rent a single U in a rack then other tenets will have physical access to your equipment. Renting a Half Rack or Full Rack generally gives you the ability to physically lock your rack. For more security many datacenters will build cages to contain all of your equipment.
Tech Support – Some datacenters provide basic support services such as power cycling equipment, or hooking up an IP KVM to your servers if they fail to boot into an OS.
...
https://www.youtube.com/watch?v=yM1Mk8aLOLk
Info
Level: Beginner
Presenter: Eli the Computer Guy
Date Created: March 24, 2010
Length of Class: 42 Minutes
Tracks
Servers
Prerequisites
...
https://www.youtube.com/watch?v=5QDe-HTZtMY
Classes have returned at: https://www.EliTheComputerGuy.com
Follow the Insanity at: https://www.FailedNormal.com
Join the CULT: http://www.CultOfTheGrind.com
Class Notes:
What is the A+
-Certification from CompTIA
-Vendor Neutral Certification for Desktop Support
-NOT a requirement for MS or Cisco certs
...
https://www.youtube.com/watch?v=OrS4yapehxE
Info
Level: Beginner
Presenter: Eli the Computer Guy
Date Created: July 12, 2013
Length of Class: 19:26
Research Assistance:
Tracks
Computer Repair
Prerequisites
None
...
https://www.youtube.com/watch?v=tIWqN6Ux9XA