Hey, everyone, glad we just went
ahead and ran our Christmas scare,
as well as a sin scam on
our target, and we took a look at
the results on that.
Now, in this video, we're going to
actually go turning on the Windows
firewall again.
We're going to do our typical thing
where we did before of blocking
incoming connections.
And what we're going to do
ultimately is run an acknowledgment
scan after we do all that
and take a look to see if there's
any type of packet loss at all.
So let's go ahead and get started
here. So we want to connect back to
our lab S01 machines so that top
on there again, just hover your
mouse over top and click on the
name, and then
we're going to go ahead and modify
our Windows firewall settings.
So you'll see here we're going to
right click on the start menu.
We're going to type in firewall dot
kpl in the run option and then
just press Enteron on our keyboard
to pull up the Windows firewall
screen. So just right click here,
go to run and then we're going
to type in firewall that
kpl and then just press enter and a
keyboard.
It'll pull up the windows firewall
for us.
Our next step is on the left side
here. We're going to click the turn
Windows firewall on or off and I'll
actually take this to the screen
where we want to make some
modifications to these settings
here. So let's go back to our lab
documents. Just double check what
our setting changes are going to be.
So that's going to be here under
step six and step seven.
So in the top option here, we're
going to just check the box to the
left of the block, all incoming
connections.
And then in the bottom box, we're
going to turn on Windows firewall
and then check the box next to
blocking all incoming connections.
So let's go ahead and do that. Now.
We're just going to check this box
here and then we're going to turn
on Windows firewall by clicking
there and then click in the box to
block all incoming connections.
And then the last step here is just
clicking on the OK button to save
those changes.
Now, as I mentioned before in a
previous video, this may lock up
this particular machine, and that's
fine. We're not going to come back
to this one. We're actually going to
be done after this video in the lab
series.
And so not all we're going to do is
go back to our Windows 10 machine.
So just click back on our Windows
Ten machine.
We're back here at the command
prompt. I'm going to type in clear
again like I normally do, just to
clear things up and press enter
again. You don't have to do that if
you don't want to.
And so now we're going to go ahead
and actually run our command.
So in the terminal window, we're
going to type this command here.
So the ping three space
dashkova Casey space,
the number one space dash capital
V space dash lower case
P space, the number eighty
space dash lowercase s
space, the number 555.
Again, we're specifying the number
we want to send packets from a space
dash capital A and then finally
are 192 down one six eight zero
one IP address.
So as usual, we're going to go step
by step through this.
So the first part we're going to
type in is paying three
space lower case C,
so H paying three space Deshler
Kacie.
All right, so the next thing we're
going to type in, it's going to be
a space, the number one and then
a dash capital V,
so space the number one
dash space and then a dash capital
D and Victor will
put another space and then we're
going to type in the port number
here. So we're to type in dash
lowercase P space, the number
eighty, so dash lowercase
P space, the number eighty specified
port number eight where we want to
send it to.
We'll put another space here and
we're going to put a dash lowercase
s space and
then five five five five again
specifying the number that we want
to send the traffic from.
We'll put another space here
and then finally we're going to put
in a dash capital A and
then our IP address.
So we're going to type in dash
capital, a space and
then our IP address. And we've been
using the 192 dot one six eight
zero dot one and then just press
enter a new keyboard there to go
ahead and run the scan.
Shouldn't take too long to run.
You see, it just happened there
pretty quickly.
But now let's take a look at our
questions here.
So question number one, what's the
percentage of packet loss and
question to how did that differ from
when we ran that initial technology?
We scan a couple of videos ago,
so let's take a look here and see
what kind of results we get back.
So what percentage of the packet
loss is there?
So we see that it's 100 percent
loss, right? And the difference is
between the previous scam we ran and
this one is we noticed in the
previous scam that we sent a packet,
we got a packet back, and so we had
a zero percent packet loss.
So this makes perfect sense, right?
We do see that there's a firewall in
place or in use.
So this could be a helpful thing as
we're scanning particular systems
to find out, is there a firewall in
the way you know? Is there is there
packet loss or is it related to
possibly a firewall?
And that might tell us, like, OK,
well, this thing's secured.
So No. One, there might be something
valuable on this system that we want
to get to. And number two, maybe
we need to be a little more stealthy
about our approach since there are
security appliances in use.
Also in this entire lab series,
all these videos here, we went ahead
and just kind of broke down some
different and in each paying three
commands. We also went ahead and
turned on one, the Windows firewall
and a couple of instances and
noticed the difference between
running a command with it on and
with it off.
And the next module, we're going to
talk about things like banner
grabbing as well as things like open
ports.