Abstract: Current systems are prone to attacks caused by intruders due to increased connectivity (especially on the Internet). So there is need to handle these attacks and provide efficient solution to these attacks. Our project provides us the technique to tackle the problem caused by intruder and helps in achieving the few basic objectives of intrusion detection systems i.e Confidentiality, Integrity, Availability, and Accountability. It uses RSA algorithm of cryptography to prevent the data or we can also use the symmetric and asymmetric cryptography techniques to provide more security on data and MD5 to detect intrusion If we have detect any intrusion in our system, we can recover our data through mirroring technique with the help data present on our backup server.

Keywords: RSA algorithm, Mirroring, Intrusion detection system, cryptography,MD5.