VPN or cryptographic gateway is a software or hardware solution for secure data transmission over unprotected network channels based on VPN (Virtual Private Network) technology.
VPN data transmission channel can be organized according to the “network-to-network” or “network-to-remote user” principle. The network-to-network architecture involves the use of a VPN gateway on both sides of the data link so that the data is encrypted. The “network-remote user” architecture requires a VPN gateway only on the server side. The user just needs to install a software application.
Main scenarios for the use of VPN gateways
- Protection of sensitive information during its transmission via insecure networks, such as the Internet
- Protection of personal information during its transmission within private corporate networks
VPN gateways are capable of acting as firewalls, but their functionality does not allow for a large number of customizations and does not provide the necessary flexibility for full-fledged use as a firewall.