Abstract of this communication paper-presentations : (Network security and cryptography)
Network security is a complicated subject, historically only tackled by welltrained and experienced experts. However, as more and more people become ``wired'', an increasing number of people need to
understand the basics of security in a networked world. We are going to present what are the common attacks against security over network, Solutions for those attacks, Introduction of cryptography,
Algorithms of Cryptography and some special-purpose Secure Networking Devices. More over we are going to show what are the best ciphers currently in use.
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