A Virtual Private Network (VPN) is a network system that establishes connections with remote servers allowing users to access information via public telecommunication systems. A VPN provides security and the ability to hide the user’s real IP address by creating an encrypted tunnel between their computer, laptop or other device and the Internet. What makes transmitting data over a VPN possible is something called encapsulation .
Encapsulation involves placing one packet of information inside another (inner packet). The outermost packets are known as protocols, which include Transmission Control Protocol/Internet Protocol (TCP/IP), Point-to-Point Protocol, Telnet protocol, Secure Shell protocol, among others. For example, if you open a web browser and type in an Internet address such as google.com the data packets sent will be raw HTTP requests; these contain no encryption. What makes it possible to transmit data over a VPN is encapsulation, which means running your information through secure protocols like HTTPS (SSL/TLS) and SSH (Secure Shell), among others.
When you use a public connection like at a coffee shop or airport, anyone on that network can intercept your data. Since most of what we do online involves sending and receiving sensitive personal information from banks, credit card companies, health care providers, social networks and other websites it’s important to use some type of encryption when using open WiFi networks. That’s where VPNs come in handy by providing access to remote systems and encrypting your data so it’s unreadable to anyone on the same network as you.
There are many different VPN protocols available today, which provide different levels of security and performance. Surfshark’s VPN is one of them you can click here to download Surfshark’s VPN. What is used to protect transmitted data in a VPN? Generally speaking, VPNs operate within three main security layers: the Physical Security Layer, the Data Link Security layer and the Network/IP Security layer. The Physical security layer ensures that physically connecting to an unsecure system (public WiFi) does not result in any access to private resources. The Data Link Security layer ensures that no packets can be received or sent from an untrusted medium (public WiFi). Finally, the Network/IP Security layer ensures that all exchanges between peers take place only after a mutual authentication. What process is used to protect transmitted data in a VPN? What you see on the surface! The underlying processes are encryption protocols like Point-to-Point Tunneling Protocol (PPTP), Layer 2 Tunneling Protocol, Internet Key Exchange version 1 and Internet Key Exchange version 2.
How Does VPN Tunneling Work?
The primary purpose of using VPN software is to establish secure, encrypted connections between remote users and their target machines.
When data is transmitted over the Internet (for example, when you access a website), it’s not necessarily protected against interception or modification by unauthorized third parties. What VPNs do is take that insecure Internet data and encrypt it through additional security mechanisms before sending it across the Internet backbone. What this means for end-users like you and me is that nobody will be able to see what we’re doing at an IP address level while we’re browsing the Web.
Typically, each device connected to the network has its own virtual private network connection with tunneling software installed internally on the device itself. This allows PCs to act as private network gateways for other devices on the network. What’s more, VPN software can also be installed to an existing router rather than requiring a PC to act as the gateway device.
If you already have a router with built-in technologies like firewall and Network Address Translation (NAT), all you need is the VPN client software, which will allow it to connect to your VPN provider’s servers over the Internet. This connection allows you to share data between different PCs or mobile devices connected at the same time; it also protects any insecure data transmitted over public WiFi networks, i.e., when using an unsecured Internet connection at airports or coffee shops. What this means for end users is that even if they’re using an unsecured WiFi connection, all their traffic will be encrypted and protected from eavesdropping.
What’s VPN Split-Tunneling?
Split-tunneling is a security option available to VPN users that allows users to route traffic destined for the local private subnets over the VPN connection, while all other traffic will be routed normally. What this means in practice is that you’ll have both your normal Internet connection and your encrypted VPN connection running at the same time. What this does it allow you to force some apps through the VPN tunnel, while still allowing others to go outside of the tunnel (i.e., when you want to play online games).
What’s great about split-tunneling in particular is that it doesn’t require any special client software on the user end: everything can be set up from within Windows itself or Apple OS settings without the need to install a third-party app. What this means is that users can easily start using split tunneling without needing any help from their VPN provider if they want to go the manual route for simplification reasons.