Layer 6 of the OSI model is the presentation layer. This layer is unique in that it is responsible for the presentation of information. Its role is to act as a translator and convert data from one format to another. If you are thinking of formats such as ASCII, EBCDIC or JPEG, you are correct; the presentation layer can also be used for encryption, however. An example of this is Secure Sockets Layer (SSL). This protocol was developed to act as a cryptographic solution for the protection of data in transit. SSL resides below the application layer but above the transport layer. Because SSL plays such an important role in securing data, it is the focus of this article.