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How Is Tunneling Accomplished in a VPN?

Posted on March 27, 2023

A VPN tunnel is created when a connection is established between two nodes. This connection can be between a computer and a server, or between two servers.

How Is Tunneling Accomplished in a VPN?Checkout this video:

Introduction

VPN tunneling is a technique used to allow remote users to access a private network. The private network is usually an internal network, such as a corporate network. tunneling allows the remote user to appear as if they were on the same local network as the rest of the users.

VPNs use two types of tunneling: layer 2 tunneling protocol (L2TP) and point-to-point tunneling protocol (PPTP). L2TP uses IPsec for encryption and is more secure than PPTP. PPTP is easier to set up but is less secure than L2TP.

What is Tunneling?

In computer networks, tunneling is the process of sending data from one network to another. It involves encapsulating packets in a new packet so that they can be sent over a different network. For example, you might use tunneling to send data from your company’s private network to a public network such as the Internet.

Tunneling is often used with virtual private networks (VPNs). A VPN is a private network that uses a public network (such as the Internet) to connect remote users or sites together. When you use a VPN, all data that is sent between your computer and the VPN server is encapsulated in a new packet. This ensures that the data is private and secure.

Types of Tunneling

Tunneling is a process of encapsulating data within another data packet. The most common type of tunneling is Layer 2 Tunneling Protocol (L2TP), which is used in virtual private networks (VPNs). L2TP encapsulates data from a higher layer, such as TCP or UDP, inside an L2TP packet. The original data packet is unaltered and is transmitted to the recipient in its entirety; only the L2TP header is added.

Other types of tunneling include:
-Generic Routing Encapsulation (GRE)
-Point-to-Point Tunneling Protocol (PPTP)
-Layer 2 Forwarding (L2F)
-Secure Shell (SSH)

How is Tunneling Accomplished in a VPN?

A VPN tunnel is created when a message is sent from one computer to another. The message is “wrapped” in an outer layer of encryption, which is then sent over the internet. The VPN tunneling process involves three steps:

1. The message is encrypted by the sender using a VPN software.
2. The message is sent over the internet to the recipient.
3. The message is decrypted by the recipient using a VPN software.

Conclusion

To summarize, tunneling is the process of encapsulating data in aprotocol so that it can be transmitted securely over a network. A VPN tunnel usesthis process to create a secure connection between two points, usually betweentwo devices or between a device and a server. By encapsulating the data in aspecialized protocol, VPNs can ensure that the data is transmitted securely,even over public networks.

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