In the fast evolution of digital data exchange information security plays an imperative role in the world of communication. The information transfer on network may face timidity. For elimination of insecurities over internet, many technological implementation and security policies have developed. Cryptography is one of the methods of protecting information and communication by using different mechanisms so that only intended person can read and process. The cryptography has the study of different algorithms. Both symmetric and asymmetric encryption techniques are best at their levels. This paper discusses about the comparison of different symmetric encryption algorithm. In addition, selecting the best algorithm according to requirements of application so that the confidentiality as well as integrity of the information, flowing on network is achieved.