1. ACCESS CONTROL MANAGEMENT By: Poonam Gupta Sowmya Sugumaran

2. Project Goal The primary goal of access control management is to preserve and protect the confidentiality, integrity, and availability of information, systems, and resources.

3. What is Access Control process by which users are identified and granted certain privileges to resources limits the use of a resource

4. Types of Access Control 1.Discretionary-owner 2.Mandatory-authorities 3.Role-based-according to role 4.Rule-based-pre determined rules

5. Access Control Technologies Tokens Smart cards Encrypted keys Passwords Popular Technologies

6. Kerberos Authentication Protocol For Client/Server Application Using Secret Key Cryptography

7. VPN ACP (Kerberos) Gateway Internet

8. Kerberos Three things happen between client and server when client Initiate to allocate resources AS Exchange TGS Exchange Client/Server (CS) Exchange

9. http://technet.microsoft.com/en- us/library/bb742516.aspx

10. Technical Details User name Password Policies AS Server KGS Sever Resource 1 Resource 2 1 3 2 4 4

11. Technical Details Step 1: User-Client Logon (i)User-username & pswrd-client (ii)client-H(pswrd)-secret key of user Step 2: Client Authentication(Client-AS) (i)Client sends user ID AS generates secret key from database (ii)AS sends 2 messages to client: Msg A- Client/TGS session key encrypted by user’s secret key Msg B- TGT encrypted with TGS’s secret key

12. Contd.. Step 3: Client Service Authorization(Client-TGS) (i)Client-2 messages to TGS: Msg C- TGT & service ID Msg D- Authenticator(user ID, timestamp) encrypted using client/TGS session key (ii)TGS decrypts TGT & authenticator and sends 2 msgs to client: Msg E-Client-to-Server ticket Msg F-Client/Server session key encrypted with Client/TGS session key.

13. Step 4: Client Service Request (Client- Service Server) (i)Client sends 2 msgs to SS: Msg E(Client/SS ticket) Msg G-Authenticator (user ID, timestamp, C/S session key) (ii)SS decrypts to get C/S session key SS decrypts authenticator and sends msg to client Msg H-Timestamp in client’s authenticator+1 encrypted using C/S key

14. Roadmap of the Project TASKMONTHWEEK Understanding the project January3 – 4 Installing Kerberos & Proposal preparation February1 Proposal Presentation February2 Coding, Testing & Debugging February- March 3- 4 ImplementationMarch- April 4- 2 Final Presentation Preparation April3-4 Final PresentationMay1

15. Thank You…!!!