Today, to deceive customers financially in banks or to their confidential data, one of the broadly used attack is internet attack. Web criminals doing an internet scam through Phished Websites that harms the user's confidentiality. Attackers spoof the data by mimicking the original Websites using DNS spoofing. An essential part of the internet on whose many other protocol rely is the Domain Name System (DNS). DNS allows hosts on the network to make updates to DNS records dynamically, without the need for restarting the DNS service. Server gets User's passwords, credit card numbers and any of their confidential details by directly redirecting the user to a fake server. This can be done by injecting Fake DNS server in place of Original Server. In this thesis we want to prevent the DNS server from DNS spoofing with efficient algorithm. The algorithm included in this thesis increases the security of url request from the attacker. This can be done by encrypting the url request by the user at client side using RSA 1024 public key encryption and exactly double its encrypted security by appending bits generated from blum blum shub generator at client side only. This whole encrypted data then be sent to server side.
DNS, Public Key Algorithm, RSA Encryption, Blum Blum Shub Generator
