Let us have a discussion on secure sockets layer and how SSL and VPN works together.
Well, what is assassin for time being?
Just ignore the picture.
Focus on what I'm going to tell you now.
Next on the list is the secure sockets layer.
Now, this security protocol was developed by Netscape to actually work with its browser, and it is
based on arriviste Shamir and Adelman.
That is the RSA encryption algorithm, which is a public key encryption.
And it is used to enable the securitization connections over the Internet between the browser and of
Web.
So.
Now, as the sun is service independent, what is the meaning of service independence?
It means that a lot of different network applications can be securely connected with it.
One of the famous being the ubiquitous etched deep south, that is the hypertext transport.
You got it right, Hypertext Transfer Protocol HD deep's a hyper text transfer protocol, there is no
transport.
I was checking on you.
So HTP uses SSL to get the HDTV protocol.
Now, as time marched on, as the cell was merged with another transport layer, security protocols
to form a new protocol that is called Let's Transport Layer Security Details.
And the latest version of Palace is VLS 2.0.
And it provides a number of enhancement or the earlier versions.
Now, several improvements in the operation of the main component of encryption was with the Amedi five
or the secured hashing algorithm.
S.A.G. was being introduced.
Hashing functions are used by SSL to ensure that the data is not changed or altered, preserving the
integrity of the data, which is one of the most important elements of information, security, integrity.
Now, more flexibility in the choice of hashing and encryption algorithms on the part of the client
and server are also supported by SSL and it has enhanced support for the advanced encryption standard
that is the atheist's algorithm.
Now, what is you can see on the screen, I forgot this, this isn't a Cecil connection process.
The first thing here, I use my little laser pointer.
The first thing here is connection request.
Uh, the PC or the host sends a correction request to the server.
Then the server asks if you do need a secure connection.
OK, I'll provide with all the security capabilities.
And finally, the SSL connection is established.
Now, SSL VPN is really the process of using the secure socket layer to create a virtual private network.
All right.
A VPN is a secured connection between the two systems that would otherwise have to connect to each other
through a non secured network.
Oh, here's what I mean.
Listen carefully now, even though I never really let this happen.
But let's just say I could connect to the servers in my corporate office through the Internet.
OK, now, you know by now that this would be a very bad thing because the Internet is not at all secure.
Right.
But if I connect to all of those servers using a virtual private network with a tunnelling protocol
inside, anything that I send from my PC to my corporate office would be locked up nicely and securely.
Right.
Plus, weapons come in handy for the data that's being sent within a private network that that you would
probably wouldn't want everyone on the network to be able to see.
Maybe you want the specific computers on the Internet to be able to communicate with each other securely,
like, let's say, the computers used by your top finance people.
Now, you wouldn't necessarily want that data just sent off in the clear to be viewed by the office
gossip.
Now, would you know?
So you can put those finance books on a VPN that's just like having them on their own little private
network.
Plus, what's even cool about this setup is that the members of your Internet VPN can still communicate
with everyone else so whenever they want.
So why not use of VPN?
So he is it.
You can see the server and the SSL VPN gateway.
Here is the clear text communication.
But when a client wants to connect through the Internet to your server, it uses a necessarily VPN communication
which provides more security.
So that does it for SSL and VPN.
Just make sure that you understand why VPN is used alongside with a system.
It is literally a process of using assistant to create a private network.
So that is the use of SSL and VPN.
Well, that does it for this lecture.
I will ask you in the next lecture.