I know everyone in this demo.
I'm going to show you how to use the firewall.
The firewall is a firewall management tool for Linux operating systems.
We can't say that the Firewall D provides a dynamically managed firewall with support for network and
firewall source that defined the trust level of network connections or interfaces, as we can see here
on the screen.
I'm using demarks.
It's German multiple mixers.
So here on the left side, I'm using this machine in order to test the SS each surface after I'm going
to add the SS Secich surfaced on the main machine and the firewall.
So I'm going to install the firewall deal on the main machine.
Your firewall d enter.
I do have the firewall on my system in case if we don't have it, just run the command.
Yumminess told us why.
Firewall the next safe.
I would like to run the system Sijia in order to enable the firewall D to start and Debord's so system
C to enable then firewall D it into.
Also, if I would like to restart the fire, Waldy, so to run System C, to restart it into.
Good.
So far, so good.
Now, if I would like to show the available options would defy and will.
Dash seemed d dash dash help, as you can see here, we have all the available options that we can run
with the firewall dash.
See in the comment, if I would like to show what is the different zone of the firewall.
So I'm going to render the comment fire or dash CND.
Then space, dash, dash, get dash, difficult dash zone to enter.
So the default zone is public.
Now, if I would like to list all the numbers of boats and surfaces that are open in the firewall.
So I'm going to run the firewall that seemed to then dash dash list dash or.
So you can see it as a surfaces on the board so far.
I don't have any pores that are open.
If I would like to list the surfaces, only the surfaces.
Quiet wall, dash, ACMD dash nationalist dash surfaces enter.
As you can see here, we have the surface that are open on the system.
If I would like to this the posts that are open.
So I'm going to find a firewall that you're seem these dash dash list dash port puts it enter.
So far we don't have any ports that are open on the system.
If I would like to reload the firewall rules to make them active after we add or remove surfaces, I'm
going to use the command firewall that seemed.
Then dash, dash, reload.
Good.
So right now, I would like to add it, Secich surfaces.
So the service this is a service before I'm going to add, just let me check on here on the machine
so we can see here.
So I would like to use a Secich surface in order to access the main machine to see if the system would
allow me to access the mean machine or not.
So hit enter.
As you can see here, Conexion refused.
So what are gonna do right now to go back here and fire you and there is a search surface on the firewall
seemed deeper than dash dash.
We have to make it permanent.
Then dash, dash and then dash surface.
Then as his pitch hits enter.
After we added the surface, then we have to use the reload.
In order to make them active.
Fine, or seeing these dashed, actually, Lord can hear, see or hear success.
So what we did.
We had all of the firewall rules to make them active.
Now, let me check my firewall.
The C and D, then dash, dash wrist dash surfaces inter.
As we can see here, we have the Secich surface under the firewall.
We can also use this command to final dash ACMD and dash dash this dash all you can see here we have
the assistance.
Now I'm going to try to log in from from this machine to the main machine had enter asking for the best
word.
As we can see here, we accessed the main machine through de Secich surface.
I'm going to exit now back to the main machine.
So if I would like to delete or remove the Secich, so I'm going to run the firewall Dasheen D Ashutosh
permanent to make this permanent.
So that I should remove dash.
Surface, then equal is as etch enter.
Now we need to reload
the rules.
Enter.
I'm going to demand to the energy machine just to make sure that.
We don't have an axis scale connection refused perfect.
Next example, if I would like to.
At the port?
No.
The port.
Number of days, secich surface in order to access the main machine.
So I'm going to run the comment five war dash C and D, then dash, dash, permanent dash, dash at
Port Equal.
So the port is twenty two.
This is the port.
Number four days.
Secich surface.
Then after that.
Slash DCB, we need to use the protocol that DCB Tenter.
Then I'm going to reload.
The firewall rules to make them active fire.
That seemed to dash, dash, reload.
Perfect.
I'm going to run the command firewall seen D dash, dash list, dash ports, as we can see.
We have this sports right now open on the system.
Going to the jury machine right now here.
As you can see here, we have.
Access to the man machine using the search surface.
If I would like to remove the port firewall, dash C and D, then dash.
Dash.
Permanent or remove.
Dash port.
Twenty two.
Then.
Slash, TCB, hit, enter.
We need to reload.
Well, that C and D dash, dash.
Good.
And I'm going to run the command firewall seeing these dash dash list.
Ports, as you can see here, wouldn't have to port anymore.
Let's conclude with our session.
Thank you.
And see you on the Next List.