Open source cloud computing systems are frequently being used for the development of private cloud so that the cloud computing system can be updated and customized to meet the needs of the business establishments. Many open-source cloud computing systems are in use, and most of them suffer from one vulnerability or the other. Out of all the OpenStack, the open-source system used by 80% of the customers. The analysis of security built into the Open Stack reveals that much vulnerability exists, which makes the cloud computing system in-secured. Security is the primary concern considering authentication, authorization, and access control and data security. The mechanisms built into Open Stack to ensure a secure environment are vulnerable to attack.In OpenStack, the process of authentication implemented through the use of fernet tokens. The use of a fernet token for authentication reveals many weaknesses. Open Stack did not give much consideration to use the existing and proven authentication systems used, such as ADDC and IMS. Uses of proven authentication systems as a part of the implementation of authentication systems within the cloud computing system in conjunction with native Fernet tokens will help to improve the authentication system so that secured authentication services implemented within Open Stack. Using two authentications systems within the same cloud computing system leads to the requirement of Implementation of Multi-Factor Authentication. In this paper, the implementation of a Multifactor Authentication system that integrates the Native Fernet system and the most stabilized and worthwhile ADDS Authentication system so that a user can work with any of the Applications including the Open Stack system with the single sign-on. The proposed method implemented within the Open Stack through making changes to the source code, addition of independent components, and customization of the configuration files.

Many businesses all over the world are turning their IT solutions through the use of Cloud computing systems hosted by third-party service providers using pay by use concept. However, businesses have to implement their IT systems fitting into the way the infrastructure used dictated by the cloud computing system, and there is either little or none provision for architecting the infrastructure as per the requirements of the business solutions. Open Source Software like OpenStack effectively used for building customized Cloud computing systems. But this kind of platform suffers from acute security threats due to the existence of several vulnerabilities. Data security, as such, is left to the users. Open Stack at best implemented a certain level of security enforcement in terms of user authentication and access control.Data security was the primary concern when Multi-tenancy implemented through the provision of access to multiple users; the Applications installed on VM's or access provision is made for the same applications installed on VMs to Multiple users. In this paper, an enhancement to OpenStack architecture presented through the addition of a new component for securing the data emanating from the user and stored within the cloud. Three data isolation techniques presented, which proved that even brute force methods could not reveal the secrecy when the data isolations techniques implemented within the open stack.