Security Issues in Distributed Systems - A survey

One important technology area in which researchers are interested is distributed systems technology. Distributed systems in general involve the interaction between diverse independent entities using a common language and protocols to achieve different conventional goals. Enterprises are now particularly growing, involving data sharing among distinct participating entities with the need of distributed resources and computing. This internet growth has meant that many distributed systems are open to the world, from where this has brought to a major problem: certifying that such systems are secure. By this approach it is essential tocover security and protection in distributed environments. This report survey emphasizes this aspect that provides a literature review between the collected papersto discuss some general security issues. The key ideas and techniques involved at these systems are studied. It defines what a secure system is, observes security policies from security mechanisms including authentication and authorization as major processes. Considers encryption as a cryptographic technique that is useful for data confidentiality and privacy than similarly, access control as an important feature that enables authority is also assessed monitoring some proposal models. Atthe same time denials of service attacks attempting to prevent legitimate users from accessing services are described observing different scenarios