In order for the process to really work, the data will be sent once the tunnel is already in place and the clients or the server will use the same tunnel to send and receive the data across the internetwork.
Transferring of data will depend upon the tunneling protocols that are being used for the transfer. VPN tunnels can be created at the following layers of the open system interconnection or OSI reference model:. The VPN protocols that operate this layer are the point to point tunneling protocol and layer 2 tunneling protocol. This keeps the data secure even if it is being communicated over public networks. The authorized users can access a private network which is called a virtual private network or VPN that is provided by an internet service provider or ISP.
This is a private network in the virtual sense because it is created in an environment that is tunneled. This protocol allows the corporations to extend their own corporate network through a private channel over the public internet. This protocol involves a combination of using PPTP and layer 2 forwarding.
As a potential threat, tunnelling protocols only need to be on the radar of networking or IT professionals, who have to ensure their systems can block unwanted tunnels and are configured to apply security protocols to data sent in using a known tunnel, like data sent through a VPN.
Infographic: Vulnerable Software. Industry definition for the term Tunneling Protocol. These protocols…. We use cookies to make your experience of our websites better. By using and further navigating this website you accept this. By clicking sign up, you agree to receive emails from Techopedia and agree to our Terms of Use and Privacy Policy.
Tunneling is a protocol that allows for the secure movement of data from one network to another. Tunneling involves allowing private network communications to be sent across a public network, such as the Internet, through a process called encapsulation.
The encapsulation process allows for data packets to appear as though they are of a public nature to a public network when they are actually private data packets, allowing them to pass through unnoticed.
In tunneling, the data are broken into smaller pieces called packets as they move along the tunnel for transport. As the packets move through the tunnel, they are encrypted and another process called encapsulation occurs. The private network data and the protocol information that goes with it are encapsulated in public network transmission units for sending.
The units look like public data, allowing them to be transmitted across the Internet. Encapsulation allows the packets to arrive at their proper destination. VPN tunnel: What is it and how does it work? What is doxing? How does incognito mode work? Do I need a VPN at home? What does a VPN hide?
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