Untangle's OpenVPN is an SSL-based VPN solution that is based on the well-known open source application, OpenVPN. Untangle's OpenVPN is mainly used for client-to-site connections with a client feature that is easy to deploy and configure, which is widely available for Windows, Mac, Linux, and smartphones. Untangle's OpenVPN can also be used for site-to-site connections but the two sites need to have Untangle servers. Site-to-site connections between Untangle and third-party devices are not supported.
In reference to the OSI model, an SSL/TLS-based VPN will only encrypt the application layer's data, while the lower layer's information will be transferred unencrypted. In other words, the application packets will be encrypted. The IP addresses of the server and client are visible; the port number that the server uses for communication between the client and server is also visible, but the actual application port number is not visible. Furthermore, the destination IP...