International Journal on Recent and Innovation Trends in Computing and Communication ISSN: 2321-8169 Volume: 3 Issue: 2 587 - 590 _______________________________________________________________________________________________ 587 IJRITCC | February 2015, Available @ http://www.ijritcc.org _______________________________________________________________________________________ A Model of Security Architecture on Private Cloud Using OpenStack Venkatesan Balu Research Scholar of St. Peter’s University, St.Peter's University Avadi, Chennai Tamilnadu, India. Email:dropmail2venkat@gmail.com Dr. L. Josephine Mary Research Guide of St.Peter’s University, Avadi, Chennai, Tamil Nadu, India Email: josimgr@yahoo.co.in Abstract:- Cloud computing is current trend and it is the best solution of the spending excessive budgeting for many organizations IT setup. With Cloud Computing becoming more widely utilized, it is important for organizations to understand ways to maximize benefits and minimize risks of a move to the cloud also to carefully consider its operating expenses essentially. Since most of the organization already has traditional IT setup by investing huge amount which they don’t want to lose and also they like to have their IT setup to move into cloud model. The m ajor share of the investment would be spent for having data center in any organization. The main objective of this paper “A MODEL OF SECURITY ARCHITECTURE ON PRIVATE CLOUD USING OPENSTACK” is to provide the model architecture to move the organization’s in-house data center to private cloud. Also this paper explains about the strategy for the migration from organization’s on-premises IT setup to private cloud. This architecture is also used the open- source cloud computing software, called “OpenStack” platform. This technology consists of a series of interrelated projects that control pools of processing, storage, and networking resources throughout a data center-which users manage through a web-based dashboard, command-line tools, or a Restful API. Keywords: Cloud computing, Private Cloud, OpenStack, Keystone, Security, Data Center. __________________________________________________*****_______________________________________________ I. INTRODUCTION The Private cloud[1] is a model or architecture and often presented as being the solution for all your computing issues in enterprises sector. It is distinct and secure cloud based environment which can be accessed and managed by the organization. It is very closer to the more traditional model of individual local access networks (LANs) that is used in the past by enterprise but having the added advantages of virtualization. This can be also called either “Internal” or “corporate” or “enterprise” cloud and it will be protected by firewall. The enterprise will have more control over its data and applications in this kind of setup. It also promises benefits such as energy savings, cost savings, rapid deployment and customer empowerment. There could be additional security offered by ring fenced cloud model that could be ideal for any enterprises which needs to store and process private data or carry out some sensitive tasks. For instance, a private cloud service could be utilized by a financial company that is required by regulation to store sensitive data internally and who will still want to benefit from some of the advantages of cloud computing[2] within their business infrastructure, such as on demand resource allocation. On the other hand, technically the virtualization is not private cloud and private cloud is far beyond virtualization. Data Storage is the one of the important and primary resource enterprises wanted to keep with their control. 1.1. Objective of Private Cloud The primary objective to have private cloud in the organization is that to achieve the below specification in their business services.  Zero downtime in the system and service which is related to business requirements.  Provision of self-service which enables access to information and applications at any time (24 hours in a day/7 days in a week) and from any location (worldwide).  According to the business demand the system and service will be automated, rapid, and elastic provisioning and releasing. This can be also called as “Resource Pooling”. This means that available service should appear to be unlimited to users and multiple users are served using a multi-tenant model. 1.2. Private Cloud vs. Standard Data Center In general, Cloud never means to refer any hardware or physical resources. Cloud is a platform that could have API to provide access to all the physical resources virtually through API. It can also be an abstract layer for the physical resources. Data Center refers to on-premise hardware like physical servers that stores data within the organization’s local network. Data Center has limited capacity. Once we build a data center, it is difficult to change the amount of storage and workload and it can withstand without purchasing and installing more equipment. 1.3. Motivation for Migrate to Private Cloud There are several kinds of reasons to move[3] the IT infrastructure to Cloud computing technology; for e.g., lower cost of entry, reduced risk of IT infrastructure failure, higher ROI, quick responses to changes in demand, rapid deployment, increased security, and ability to focus on an organization’s core business.