Policy-Based IPSec Management (Role combination)

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Presentation transcript:

Policy-Based IPSec Management (Role combination) 15장 키 관리에 대해 발표할 전영호 입니다. Jeon Youngho dean83g@gmail.com 2009.05.29

Contents Abstract Related works Proposed system Conclusion References IPSec IPSec modes Secure protocols SA, SP, IKE Proposed system Role Combination Conclusion References

Abstract Security is vital to the success of e-commerce and many new valued-added IP services. IPSec is an important security mechanism in that it provies cryptographic-based protection mechanisms for IP packets. IPSec policies are quite complex, manually configuring them on individual network elements is inefficient. Therefore, it is infeasible for large-scale IPSec deployment.

Related works IPSec is a set of IETF’s open standards that provides cryptographic-based protection mechanisms for IP packet. Supporting confidentiality, integrity, authentication, protection against replay

Related works (cont.) IPSec modes Transfer mode

Related works (cont.) IPSec modes Tunnel mode

Related works (cont.) Secure protocols AH(Authentication Header) protocol providing integrity, source authentication, but not privacy

Related works (cont.) Secure protocols ESP(Encapsulating Security Payload) protocol Providing integrity, source authentication and privacy.

Related works (cont.) SA, SP and IKE

Related works (cont.) SP(Security policy) decides if a particular packet needs to be processed by IPSec or not. SA(Security association) is a simplex “connection” that provides security services to the IP traffic. IKE(Internet Key Exchange) is the protocol to establish secure connection internally and externally

Related works (cont.) Current example of IPSec policy Unfortunately, the parameters must be manually entered into the policy server by an administrator.

Proposed system Role Combination, a set of parameters, makes us easy to input parameters toward policy server by duplicating it. The Role Combination also could be modified and easily customized. The Role Combination supports inheritance. If a branch added at banking system, Role Combination is automatically downloaded.

Proposed system (cont.) An example of IPSec information model. Box : classes Line with arrow : inheritance Line with “o” : partially aggregation(inheritance) Line with “*” : sharing association.

Conclusion IPSec offers a richset of security protections. Getting more complex, the proposed policy-based IPSec management simplifies large-scale IPSec policy deployment and management. The Role Combination provides a level of abstraction for the application of a set of policys to specific interfaces. Continuous research and standardization efforts are required to meet these challenges.

References [1] S. Kent and R. Atkinson, “Security Architecture for the Internet Protocol,” IETF RFC 2401, Nov. 1998. [2] A. Westerinen et al., “ Terminology for Policy-Based Management,” IETF RFC 3198, Nov. 2001. [3] S. Kent and R. Atkinson, “IP Encapsulating Security Payload,” IETF RFC 2406, Nov. 1998. [4] S. Kent and R. Atkinson, “IP Authentication Header,” IETF RFC 2402, Nov. 1998. [5] D. Harkins and D. Carrel, “ The Internet Key Exchange (IKE),” IETF RFC 2409, Nov. 1998. [6] 3GPP TS 33.210: “Third Generation Partnership Project; Technical Specification, Group Services and System Aspects; 3G Security; Network Domain Security; IP Network Layer Security.” [7] M. Fine et al., “Framework Policy Information Base,” IETF RFC3318, Mar. 2003. [8] D. Durham et al., “The COPS (Common Open Policy Service) Protocol,” IETF RFC 2748, Jan. 2000. [9] K. Chan et al., “COPS Usage for Policy Provisioning (COPS-PR),” IETF RFC 3084, Mar. 2001. [10] J. Jason et al., “ IPSec Configuration Policy Information Model,” IETF draftietf- ipsp-config-policy-model-07.txt, work in progress, Mar. 2003.