The document discusses Virtual Private Networks (VPNs) and provides information about different types of VPNs. It defines a VPN as a secure tunnel between two or more devices that verifies authentication and encrypts data to prevent outsiders from seeing it. The document describes remote access VPNs that allow users to remotely connect to private networks and site-to-site VPNs that connect the networks of multiple office locations. It also gives examples of using VPNs remotely and to bypass censorship or hide one's location. Specific VPN protocols like PPTP and L2TP are explained.

1. Name: Riaz Hussain
Roll No:2K15/ITE/114
Name: Dilsher Ahmed
Roll No:2K15/ITE/46
Name: Mazhar Ali
Roll No:2K15/ITE/76

3.  A VPN or Virtual Private Network is a service or method
which is used to add security and privacy to private and
public networks.
 A VPN is a secure tunnel between two or more devices.

4. It verifies authentication between two hosts
then outsider(Hackers) won’t be able to
see the data (encrypted)

5.  when you connect to the internet you first connect to
your ISP.
 All your internet traffic passes through your ISP’s .
 When using VPN you connect to a server run by
your VPN provider via an encrypted connection.
 All your data traveling between your computer and
the VPN server is encrypted.
 It gives another IP address instead of your IP
address (during surfing)

6. Remote Access VPN:
 Remote access VPN allows a user to connect to a
private network and access its services and resources
remotely.
 Remote Access VPN is useful for business users as
well as home users.

7. Site – to – Site VPN:
 A Site-to-Site VPN is also called a Router-to-Router
VPN and is mostly used in Companies and
organizations.
 Many companies have offices located both nationally
and internationally, a Site-to-Site VPN is used to
connect the network of the main office location to
multiple offices.

8. A VPN can be used as remotely way.
A VPN allows you to connect private
networks securely.
It allows you to bypass internet censorship.
Hides your location.

9. Right click on network icon:

10. An Interface will look like this.
Click on “Set up a new connection or
network”

12. Click on “Use my internet connection
(VPN)”

13. “Internet address” can be an IP or a name.

14.  Search on Google “Free VPN with password”

16. My IP address on “Google”

17. Instead of my “IP Address” it shows
another IP address.

18. “Does anyone have any thoughts
regarding to presentation”
No hesitation, feel free to ask.

20.  Point to Point Tunneling Protocol
(PPTP) developed by Microsoft in 1995.
 It is one of the most popular VPN protocol
available today that people use.
 PPTP, operating on TCP port 1723.
 PPTP encapsulates Point-to-Point Protocol
(PPP) frames into IP datagram for transmission
over an IP-based network, such as the Internet.

21. PPTP uses a TCP connection, known as
the PPTP control connection, to create,
maintain, and terminate the tunnel.

22. PPTP is based on authentication,
encryption and PPP negotiation.
This protocol encrypts data and puts it into
packets by creating a tunnel that provides
secured communication over internet.

23. Advantage:
PPTP supports a wide range of desktop
and mobile operating systems which is its
biggest advantage.
PPTP is easy to configure
Disadvantage:
PPTP is a old VPN protocol and it is not as
secured as other protocols available today
like L2TP.

25.  L2TP stands for Layer to Tunneling Protocol
that was developed by Microsoft and Cisco.
 L2TP is a VPN that typically combined with
another VPN security protocol to establish a
more secure VPN connection
 L2TP VPN forms a tunnel between two L2TP
connection points and another VPN such as
IP sec protocol encrypts the data and focuses
on securing communication between the
tunnels.

26. A L2TP is also similar to PPTP.
 The similarities exist in terms of their lack
of encryption and that both rely on PPP
protocol to do this.
They begin to differ with regards to their
data confidentially and data integrity.
 L2TP VPNs provide both whereas PPTP
VPNs do not.

27. Thank you 