Okay.
So we're going to pick up from where we left in the previous lecture.
And in this lecture, I'm going to continue showing you the basics of Thales, how to see the notifications,
how to edit some of the settings, connect to networks and so on.
And going back to the status bar, we have the time and the date in here.
Now, if you also click on this, you'll get a nice calendar on the right and you'll also get the notification
menu in here in which you'll see a list of system notifications.
Continuing to the right.
We have the onion icon right here, which shows us the status of the Tor circuit.
Now, if you're not connected right now, you should see an X beside it.
Don't worry about that.
We'll talk about this in a minute.
Beside it, you have the accessibility options again, options to zoom in, zoom out, increase, contrast
stuff that will just make it easier to use the system.
We have the language selector in here.
You can change the language if you wanted to.
You can click on show keyboard layouts if you wanted to add more languages.
Now going to the last icon in here, you can see the first thing we have is the volume controls.
You can also see it's saying why it connected.
This is because I have an Ethernet cable connected to this computer.
That's why I have this computer is getting Internet connection.
This is the easiest way to get Internet connection on tables.
If you don't have an Ethernet cable, you can also connect using wi fi.
Now keep in mind you'll only see this option, the wi fi option if tail supports your wi fi card or
if it supports the wireless adapter that is connected to this computer.
For example, it actually was not able to detect my built in wi fi card.
And the only reason why I have this option here, because I have an external USB wireless adapter connected
to this computer.
So if you can't see the wi fi option here, it's probably because the wi fi card used in your computer
is not supported by tables.
I'll include the list of all wi fi adapters supported by tables in the resources of this lecture.
Once you see this option, connecting to a wi fi network is trivial.
All you have to do is just click here.
Click on Select Network.
Select the network that you want to connect to.
Put the password and you'll be able to connect.
And finally, you can also see the power settings in here of this computer.
At the bottom here, we have a number of icons.
The first one here will take you into the preferences.
So I'll just click on it quickly to show you.
And here you'll be able to change settings about the operating system, such as the background display,
privacy settings, language settings and so on.
Keep in mind right now our installation is not persistent, so anything you do will be lost as soon
as you turn off this machine or restart it.
We will talk about persistence later on in the course.
So you should keep this in mind when change settings.
Going back to the top right icon, we also have the lock icon in here which will lock this computer.
Now, keep in mind, we started the session without a password.
Remember, the admin password was disabled.
Therefore, when you click on this, it will actually ask you for a password to set so that you can
use that password to unlock the screen again.
So let's say I put a password here.
And then lock the screen.
Now when I come back, hit enter and to log in now to my session, I'll have to use the password that
I just said.
Keep in mind, this is not an admin password.
This is literally a password that we temporary set when we lock the screen.
You can also pause the current session.
You can restart or shut down using these buttons.
Now the really cool thing about tails when you click on Shutdown or when you just disconnect the USB
device that contains tails, it will automatically shut down securely.
What I mean by that is, as we mentioned before, Tails never uses the built in storage of the computer
that you run it on.
It runs completely from RAM.
This means that once you turn it off, it leaves no traces because RAM gets cleared every time you turn
off the computer or restart it.
Now, this is all good, but it actually takes a number of minutes, sometimes even up to four or 5
minutes to completely clear the RAM.
Therefore, if you just shut down the computer and someone grabs your computer, freezes the ram, this
RAM will still contain information about your session, and that way they'll be able to store your RAM
for a long period of time, as long as it's frozen, and then they'll be able to inspect it and get
information about what you did while you were using tails.
Therefore, when you actually click on Shut Down or disconnect the USB device, tails will perform a
secure shutdown in which it will wipe the RAM before it completely shuts down.
Therefore, if someone gets your computer and freezes the ram, there will still be no information about
you because tails completely and properly clear the ram before it went off, before it shut down.
So this is a really, really cool feature to prevent cold boot attacks.