Client-to-LAN VPN can satisfy this demand. For example, an employee on business can access the private network of his company securely. In this scenario, the remote host is provided with secure access to the local hosts. The following figure shows the typical network topology in this scenario. LAN-to-LAN VPN can satisfy the demand that hosts in these private networks need to communicate with each other.
For example, the private networks of the branch office and head office in a company are located at different places. In this scenario, different private networks are connected together via the internet. Common tunneling protocols are Layer 2 tunneling protocol and Layer 3 tunneling protocol.ĭepending on your network topology, there are two basic application scenarios: LAN-to-LAN VPN and Client-to-LAN VPN. The core of VPN is to realize tunnel communication, which fulfills the task of data encapsulation, data transmission and data decompression via the tunneling protocol. Private indicates users can establish the VPN connection according to their requirements and only specific users are allowed to use the VPN connection.
Virtual indicates the VPN connection is based on the logical end-to-end connection instead of the physical end-to-end connection. VPN (Virtual Private Network) provides a means for secure communication between remote computers across a public WAN (Wide Area Network), such as the internet.
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