Introduction to Virtual Private Network and Components
- 2. VIRTUAL PRIVATE NETWORK It basically encrypts the connection and makes the user’s IP address hidden by using various tunneling protocols. It is used to bypass geo-blocks and for security purposes. It is secure and private means for file sharing, communication and remotely accessing data without any risk of a hack.
- 3. VPN tunneling ensures encryption at the user’s end and decryption at the receiver’s end, for this to happen the device should be connected to a VPN client software application.VPN acts as an intermediator between user and connection to the internet. It hides user IP address and makes a connection from VPN’s private network rather than the user’s ISP
- 4. HISTORY OF VPN 1996 - a Microsoft’s employee started to work on Peer-to- Peer Tunneling Protocol 1999 - First VPN was published
- 5. FEATURES VPN PROVIDES PLENTIFUL SERVER LOCATION. IT ALSO PROVIDES ANONYMOUS DNS SERVERS. VPNS ARE GENERALLY COST-EFFECTIVE. VPN SUPPORTS ROUTER. THE VPN IS HIGHLY ENCRYPTED AND SECURE. ALONG WITH VPN, WE GET SECURE VPN PROTOCOLS. IT PROVIDES SAFETY AGAINST DNS LEAK. THE VPN PROVIDERS ALSO OFFER CROSS- PLATFORM COMPATIBLE APPS.
- 6. It maintains confidentiality of user’s data. It maintains the integrity of the user’s data that is the data cannot be changed in between the transmission. It ensures non-repudiation that is a sender cannot deny that he/she had not sent the data. Data authentication is also ensured by VPN, it verifies the source and destination’s authenticity. Characteristics of VPN
- 7. APPLICATION OF VPN VPN can easily bypass geographic restrictions on websites or streaming audio and video. Using a VPN, we can protect ourselves from snooping from untrustworthy Wi-Fi hotspots. One can gain privacy online by hiding one’s true location. One can protect themselves from being logged while torrenting.
- 8. VPN Protocol IP Security (IPsec) Point-to-Point Tunneling Protocol (PPTP) Secure Sockets Layer (SSL) and Transport Layer Security (TLS) Layer 2 Tunnel Protocol (L2TP) OpenVPN It ensure an appropriate level of security with connected systems when the underlying network infrastructure can not provide it alone. To secure and encrypt, several different protocols can be used:
- 9. WORKING PRINCIPLE OF VPN The working principle of a VPN involves creating a secure and encrypted connection between the user’s device and a VPN server. This connection is created using a combination of encryption protocols and network protocols. When a user connects to a VPN, their device sends a request to the VPN server to establish a secure connection. The VPN server responds by sending the user’s device a set of encryption keys, which are used to encrypt all data that is transmitted between the device and the VPN server.
- 10. WORKING PRINCIPLE OF VPN Once the connection has been established, all data that is transmitted between the user’s device and the VPN server is encrypted using the encryption keys. This means that even if a hacker intercepts the data, they will not be able to read it. VPN also uses network protocols to ensure that the data is transmitted securely. The most common network protocol used by VPNs is the Internet Protocol Security (IPsec) protocol. IPsec provides a set of security protocols that ensure the integrity, confidentiality, and authenticity of the data that is transmitted over the internet.
- 11. Advantages of VPN Improved Security: A VPN encrypts all data that is transmitted between the user’s device and the VPN server. This means that even if a hacker intercepts the data, they will not be able to read it. Privacy: A VPN masks the user’s IP address, making it difficult for websites and online services to track their online activity.
- 12. Access to Restricted Content: Some websites and online services are restricted in certain countries. By using a VPN, users can connect to a server in another country and access the content that is restricted in their own country. Anonymity: By masking the user’s IP address and encrypting their data, a VPN provides a high level of anonymity online.
- 13. Disadvantages of VPN The time taken to fetch the data sometimes increases when fetched through VPN, so there might be a performance issue with respect to time. VPN allows you to hide your identity but sometimes your VPN provider company itself steals your data, which can cause security issues.
- 14. Whenever VPN disconnection occurs there is a possibility of IP address get revealed to the network from which connection was made. It is always not possible to bypass restrictions applied by a website by using a VPN.
- 16. VPN PRIVACY YOUR BROWSING HISTORY YOUR LOCATION FOR STREAMING YOUR IP ADDRESS AND LOCATION YOUR DEVICES YOUR WEB ACTIVITY — TO MAINTAIN INTERNET FREEDOM 1. 2. 3. 4. 5.
- 17. TYPES OF VPN TUNNELING VOLUNTARY TUNNELING COMPULSORY TUNNELING Tunneling is the technique of putting an integrated data packet into another packet (which contains routing information) and sending it over the internet. The packets travel through a path which is known as tunnel. To secure a tunneled transmission against interception, all traffic over a VPN is encrypted for safety.
- 18. VOLUNTARY COMPULSORY VOLUNTARY VS COMPULSORY VPN client in the voluntary tunneling handles all the connection setup. Two step procedure is required to set up the VPN connection in voluntary tunneling. the client first establish a normal connection to the carrier then the carrier works as an intermediary to make a connection between a VPN server and that client. Compulsory tunneling provides complete management control of the tunnels to the ISP and hides the details of the connectivity of VPN server from the clients.
- 19. VPN FRONT END PROCESSOR (FEP) NETWORK ACCESS SERVER (NAS) POINT OF PRESENCE SERVER (POS) BROKER DEVICES ARE USED IN COMPULSORY TUNNELING FOR THE VERIFICATION OF CLIENTS. THE LOGIC BUILD IN THE BROKER DEVICE ARE USED TO ASSOCIATES THE CLIENT WITH THE DIFFERENT VPN SERVERS. THIS NETWORK DEVICE IS ALSO CALLED AS THE FOLLOWING:
- 20. ACTIVITY We will try to setup a VPN connection using Hamachi VPN