International Journal of Engineering and Technology

Paper concentrates on surveying a key region of information systems administration hypothesis - The Open Systems Interconnect (OSI) 7 Layer Model. This survey exhibits the utilization of the prototype ideas into the setting of data safety. This survey shows the point of view that normal data security issues outline to the sensible builds displayed in the OSI 7 Layer Network Model. A couple layers have more impact than others while securing information. Jointly, they can be utilized to fabricate a complete arrangement. Using the OSI Model's 7 layers, this survey paper will exhibit an intelligent, complete and achievable way to deal with securing an association's data assets. In this paper, creator gives a short outline of Symmetric key block cipher for various calculations exhibited in this field as per characterized it in cryptography where we ordered into classes. To start with, Mode of operation which is routes connected block cipher to encode bigger plaintext. Second, iterated item cipher which additionally ordered it into Feistel Network, substitution-stage organizes and Unbalanced Feistel Network.