-: In this section of the course,
we're going to cover different types of network services
that you're going to come across as a technician.
Now, each network client has a specific function,
for example, I have a Nest Thermostat at my house
and it's connected to my wireless network.
This device has a specific purpose,
to keep the air conditioning at the level that I specified
and keep me comfortable and warm in the winter
and cool in the summer.
Now, this device is what's known as an IoT,
or internet of things device,
and its function is to control my air conditioner.
Conversely, I also have a unified threat management device
installed on my network too.
Now, this device has a completely different function,
because it's focused on blocking malicious traffic
that's trying to break into my network,
as well as scanning my emails for spam
and acting as a boundary device
to scan and filter traffic as it tries to enter my network.
And that is what we're really going to be discussing
in this section of the course.
All these different types of client devices and services
that you may come across in a typical network.
Our focus in this section
is again going to be on domain two, networking.
As we go through this section,
we're going to cover one objective, objective 2.4.
Now, objective 2.4 states
that you must be able to summarize services
provided by networked hosts.
As we begin this section,
we're going to first look at file and print servers
that exist on your local area network and the internet.
Next, we'll move into how websites
are hosted using web servers.
Then we're going to move into our coverage of email servers,
where we're going to cover the four different types,
SMTP, POP3, IMAP and Exchange.
After that, we're going to move
into our coverage of authentication,
authorization and accounting servers,
known as AAA or triple A servers.
Next, we'll discuss remote access servers
and network monitoring servers
and after that, we're going to move into our coverage
of proxy servers and load balancers.
Next, we're going to cover unified threat management systems
and all the functions they combine
into a single rack-mounted device.
Finally, we're going to move into our discussion of ICS,
SCADA, embedded systems and legacy systems.
So let's get started into our journey
of network services in this section of the course.