A VPN (virtual private network) is a private network that connects to a public network and allows users to transmit and receive data as if their computers were directly linked to the private network. A virtual private network (VPN) is a technology that establishes a secure and encrypted connection over an insecure network, such as the internet.
VPNs were more routinely used to switch between IP addresses in various regions. Remote users and branch offices can now securely access company apps and other resources thanks to virtual private network technologies. All of your traffic is held inside a private, encrypted tunnel as it travels via the public internet with a virtual private network.
This network is intended to create a safe, encrypted tunnel over which data can be transmitted between a remote user and the enterprise network. Through encrypted data and tunnelling methods, VPN data security is maintained. A point-to-point connection between a VPN client and server, or a site-to-site link between two Virtual private network servers, is what a Virtual private network is.
A virtual private network (VPN) establishes a safe tunnel by encrypting all of your communication and passing it through the secure tunnel, allowing you to access the web freely and anonymously. It allows individuals, corporations, governments, and military groups to safely access network resources from a distance.
Types Of Virtual private network
- Remote Access virtual private network (VPN)
- Site-to-Site virtual private network (VPN)
Types of VPN protocols
- IPSec (Internet Protocol Security) is a protocol for securing Internet communication over an IP network. IPSec protects Internet Protocol communication by authenticating the session and encrypting each data packet sent and received.
- Layer 2 Tunneling Protocol (L2TP) — It allows data to be tunnelled between two geographical locations using a VPN network.
- PPTP (Point-To-Point Transfer Protocol) wraps the data packet and establishes a tunnel. The data between the connections is encrypted using the Point-to-Point Protocol (PPP).
- SSL (Secure Socket Layer) is a computer networking protocol that secures connections between network application clients and servers over an insecure network, such as the internet.
- Secure Shell (SSH) – establishes a VPN tunnel for data transfer while also ensuring that the tunnel is encrypted.The OpenSSH client establishes SSH connections, and data is sent from a local port to the distant server over an encrypted tunnel.