TITLE: Comparison of Cryptographic Protocols. INTRODUCTION: In the recent years the need of security has increased to many folds. Therefore, there is a need of secure connection over the network has become important to protect client's vital information. Cryptographic protocols provide secure connections, enabling two parties to communicate with privacy and data integrity. SSL and TLS are both cryptographic protocols that provide authentication and data encryption between servers, machines and applications operating over a network (e.g. a client connecting to a web server). SSL is the predecessor to TLS. Over the years, new versions of the protocols have been released to address vulnerabilities and support stronger, more secure cipher suites and algorithms. This Research focuses on the network communication cryptographic protocols SSL and TLS The Versions of SSL/TLS and their vulnerabilities are summarized. - The advantages of TLS 1.2 over SSL versions are explained and why SSL is no lon Vulnerabilities of SSL such as Poodle, Heart bleed are explained along with the practical demonstration of how SSL can be exploited. ger used