This document summarizes information about virtual private networks (VPNs). It defines a VPN as a secure connection between devices and networks over public networks like the Internet. It describes the main types of VPNs and how they work by encrypting data and routing it through a service provider's secure servers. The document also discusses VPN security methods like firewalls and encryption. It outlines advantages like reduced costs but also disadvantages such as loss of access if the connection is down. Finally, it predicts continued growth in VPN usage and markets in the future.

1. Centurion University of Technology and
Management (Odisha)
Topic name:-virtual private network
Name:- Roushan Kumar
Reg.No:- 200101120079
Branch:-B.TECH (CSE)
Subject:- It Infrastructure Management
Guided by:-Prof. Soumen Chakraborty

2. CONTENT
• What is virtual private network
• Types of VPN’S
• How Does It Work
• Security Firewalls
• Advantages
• Disadvantages
• Future
• Conclusion

3. What is virtual private network
• A virtual private network is a mechanism for creating a secure
connection between a computing device and a computer
network, or between two networks, using an insecure
communication medium such as the public Internet

4. Types of VPN’S
• Remote- Access VPN
• Site-To Site VPN(Intranet based)
• Site To site VPN (Extranet Based)

5. How Does It Work
• A VPN encrypts your communications on whatever device
you're using, including phone, laptop, or tablet. It sends your
data through a secure tunnel to the VPN service provider's
servers. Your data is encrypted and rerouted to whatever site
you're trying to reach.

6. VPN Security: Firewalls
• A well-designed virtual private network used several methods for
keeping your connection and data secure:
• Firewalls
• Enccryption
• IPSec
• AAA Server
• You can set firewalls to restrict the number of open ports, what type of
packets are passed through and which protocols are allowed through.

7. VPN Advantages
 Multiple telephone lines and banks of modems at the central site are not
required.
 A reduction in the overall telecommunication infrastructure
 As the IPS provides the bulk of the network.
 Reduced cost of management, maintenance of equipment and technical
support.
 virtual private network functionality is already present in some IT equipment.
 Hide Your Private Information

8. VPN Disadvantages
 If the IPS or Internet connection is down, so is the virtual
private network
 The central site must have a permanent internet connection
so that remote clients and other sites can connect at anytime
 Loss of Access to Some Websites
 VPNs Are Illegal in Some Countries

9. Future OF VPN
• With more and more people working and learning
remotely, utilizing public Wi-Fi, and being mindful of
online privacy and security, it's no wonder VPN usage
is on the rise. The VPN market is predicted to grow at
a CAGR of 15.3% and reach $77.1bn by 2026, with
above-average growth in 2021.

10. Conclusion
 As we have gone through all possible details we conclude that virtual
private network Is The best option for the corporate networking.
 As many companies need to have access to internet and hence security is
also the main concern.
 virtual private network private best possible combination of security and
private network capabilities with adequate cost- saving to the companies
who are presently working with leased lines