Abstract
We outline ways of leveraging virtualization for enhancing system dependability and security, and describe the practical realization of some of these enhancements using the Xen open-source virtual machine monitor (VMM). Using combinatorial modeling, we perform reliability analysis of multiple design choices when a single physical server is used to host multiple virtual servers. The analysis shows that unless certain conditions (e.g., regarding the number of virtual servers) are met, virtualization could decrease the reliability of a single physical server. The analysis also shows that improving the reliability of the VMM is crucial to improving the reliability of a virtualized physical node. Motivated by this observation, we show how the enhancements we have implemented can be combined to produce a more reliable Xen VMM architecture, called R-Xen. The Xen VMM consists of a hypervisor core and a privileged virtual machine (VM) called Dom0. Dom0, being much bulkier than the hypervisor core, is the weak link for Xen reliability. Consequently, R-Xen focuses on improving the reliability of Dom0 through replication in which Dom0 replicas mutually monitor each other for intrusion and faults. R-Xen converts more severe Dom0 replica faults into fail-stop behavior, and rejuvenates a failed replica. The approach is transparent and does not require any modifications to regular Xen VMs (user domains).
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Barham, P.T., Dragovic, B., Fraser, K., Hand, S., Harris, T.L., Ho, A., Neugebauer, R., Pratt, I., Warfield, A.: Xen and the Art of Virtualization. In: Proc. 19th ACM Symposium on Operating Systems Principles (SOSP 2003), October 2003, pp. 164–177 (2003)
Garfinkel, T., Rosenblum, M.: When Virtual is Harder than Real: Security Challenges in Virtual Machine Based Computing Environments. In: Proc. 10th Workshop on Hot Topics in Operating Systems (HotOS-X) (May 2005)
Garfinkel, T., Rosenblum, M.: A Virtual Machine Introspection Based Architecture for Intrusion Detection. In: Proc. Network and Distributed Systems Security Symposium (NDSS 2003) (February 2003)
Bressoud, T.C., Schneider, F.B.: Hypervisor-Based Fault Tolerance. ACM Trans. Comput. Syst. 14(1), 80–107 (1996)
VMware: VMware Double-Take, http://www.vmware.com/pdf/vmware_doubletake.pdf
Douceur, J.R., Howell, J.: Replicated Virtual Machines. Technical Report MSR TR-2005-119, Microsoft Research (September 2005)
Dunlap, G.W., King, S.T., Cinar, S., Basrai, M.A., Chen, P.M.: ReVirt: Enabling Intrusion Analysis through Virtual-Machine Logging and Replay. SIGOPS Operating System Review 36(SI), 211–224 (2002)
Joshi, A., King, S.T., Dunlap, G.W., Chen, P.M.: Detecting Past and Present Intrusions through Vulnerability-Specific Predicates. In: Proc. 20th ACM Symposium on Operating Systems Principles (SOSP 2005), pp. 91–104 (2005)
King, S.T., Chen, P.M.: Backtracking Intrusions. In: Proc. 19th ACM Symposium on Operating Systems Principles (SOSP 2003), October 2003, pp. 223–236 (2003)
King, S.T., Mao, Z.M., Lucchetti, D.G., Chen, P.M.: Enriching Intrusion Alerts through Multi-Host Causality. In: Proc. Network and Distributed System Security Symposium (NDSS 2005) (2005)
King, S.T., Dunlap, G.W., Chen, P.M.: Debugging Operating Systems with Time-Traveling Virtual Machines. In: Proc. 2005 Annual USENIX Technical Conference, April 2005, pp. 1–15 (2005)
Zhang, X., van Doorn, L., Jaeger, T., Perez, R., Sailer, R.: Secure coprocessor-based intrusion detection. In: Proc. 10th ACM SIGOPS European workshop, pp. 239–242 (2002)
Nick, L., Petroni, J., Fraser, T., Molina, J., Arbaugh, W.A.: Copilot - A Coprocessor-based Kernel Runtime Integrity Monitor. In: Proc. 13th USENIX Security Symposium, p. 13 (2004)
Laureano, M., Maziero, C., Jamhour, E.: Intrusion Detection in Virtual Machine Environments. In: Proc. 30th EUROMICRO Conference (EUROMICRO 2004), pp. 520–525 (2004)
Dike, J.: A User-Mode Port of the Linux Kernel. In: Proc. 4th Annual Linux Showcase & Conference, p. 7 (2000)
Litty, L.: Hypervisor-Based Intrusion Detection. Master’s thesis, University of Toronto (2005)
Jiang, X., X.W., Xu, D.: Stealthy Malware Detection through VMM-based Out-of-the-Box Semantic View Reconstruction. In: Proc. 14th ACM conference on Computer and Communications Security (CCS 2007), pp. 128–138 (2007)
Beck, D., Vo, B., Verbowski, C.: Detecting Stealth Software with Strider GhostBuster. In: Proc. International Conference on Dependable Systems and Networks (DSN 2005), pp. 368–377 (2005)
Clark, C., Fraser, K., Hand, S., Hansen, J.G., Jul, E., Limpach, C., Pratt, I., Warfield, A.: Live Migration of Virtual Machines. In: Proc. 2nd Symposium on Networked Systems Design and Implementation (NSDI 2005), May 2005, pp. 273–286 (2005)
Agbaria, A., Friedman, R.: Virtual Machine Based Heterogeneous Checkpointing. Software: Practice and Experience 32(1), 1–19 (2002)
Washington Post: A Time to Patch (2006), http://blog.washingtonpost.com/securityfix/2006/01/a_time_to_patch.html
Reiser, H.P., Kapitza, R.: Hypervisor-Based Efficient Proactive Recovery. In: Proc. 26th IEEE International Symposium on Reliable Distributed Systems (SRDS 2007), pp. 83–92 (2007)
Debar, H., Davei, M., Wespi, A.: A Revised Taxonomy of Intrusion-Detection Systems. Annales des Telecommunications 55(7-8), 83–100 (2000)
Chen, P.M., Noble, B.D.: When Virtual is Better than Real. In: Proc. 8th Workshop on Hot Topics in Operating Systems (HotOS-VIII), May 2001, pp. 133–138 (2001)
Kotsovinos, E., Moreton, T., Pratt, I., Ross, R., Fraser, K., Hand, S., Harris, T.: Global-scale Service Deployment in the XenoServer Platform. In: Proc. 1st USENIX Workshop on Real, Large Distributed Systems (WORLDS 2004) (December 2004)
Ross, R.: CoWNFS, http://www.russross.com/CoWNFS.html
stealth: Adore-ng v0.42, http://packetstormsecurity.org/
Johnson, B.W.: Design and Analysis of Fault-Tolerant Digital Systems. Addison-Wesley, Reading (1989)
Reiser, H.P., Hauck, F.J., Kapitza, R., Schröder-Preikschat, W.: Hypervisor-Based Redundant Execution on a Single Physical Host. In: Proc. 6th European Dependable Computing Conference (EDCC 2006), p. S.2 (2006)
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Jansen, B., Ramasamy, H.V., Schunter, M., Tanner, A. (2008). Architecting Dependable and Secure Systems Using Virtualization. In: de Lemos, R., Di Giandomenico, F., Gacek, C., Muccini, H., Vieira, M. (eds) Architecting Dependable Systems V. Lecture Notes in Computer Science, vol 5135. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-85571-2_6
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DOI: https://doi.org/10.1007/978-3-540-85571-2_6
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