Voice over internet protocol is the current trend and technology that people find it easy and economical to use for communication between each other both for personal as well as in corporate world. So what is VoIP exactly and what are the things that comprise a VoIP system and what are the pros and cons of it forms the current discussion . Continue reading “Securing VoIP – Part 1 – An Introduction To VoIP”
OSI Layer Model developed by ISO, which is a 7 layer networking model, defines how networks should be designed and how devices on a network talk to each other. Each layer in the OSI model works directly with the layer above or below it and has a set function for moving communication across a network. The following table gives a quick overview of each layer and devices / tools / protocols used by each layer for communication.