A key difference between normal remote access and using Ravlin Soft, however, is that no long-distance charges accrue from the use of the client. IPSec compliant encryption and user verification routines protect the data sent thru the tunnel. Modes of Operation Ravlin Soft operates in two separate modes, Transport and Tunnel. Additional security-related information is added at both the beginning and end of the original packet. This process is called encapsulation.
Encapsulation is what produces the private tunnel through the public network.
Transport mode also secures the data payload of each packet transmitted from the Ravlin Soft client to the destination. The difference is that transport modes modify, rather than encapsulate, the original IP packet that travels through the network. The original IP address is unchanged. Overhead is not as high, but, since the original header information is not encrypted, security isn't quite as strong. Provides significant network cost savings by ensuring secure communications and data privacy over public networks like the Internet.