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Rainer Sennwitz, "Effizientes Monitoring von Netzwerkdaten zwischen virtuellen Maschinen," Master's Thesis, Department of Computer Science, Friedrich–Alexander University of Erlangen–Nuremberg (FAU), March 2011. (Advisors: Tobias Limmer and Falko Dressler)


Within the last years, the relevance of virtualization has grown, particularly in the area of networks and servers. However, when migrating computer systems into virtual machines, considering network security is indispensable. Therefore, this work addresses the monitoring of data traffic between several virtual machines. An efficient combination of virtualization and network monitoring is its goal while the focus is on thorough logging of all transmitted network packets. Against this backdrop, the components of a virtual infrastructure and their detailed functionality are first considered. Based on this, an introduction on synchronization between packet capture and hypervisor is given. Extending PF_RING enables applications to inquire whether the monitoring system is capable of processing new network packets by utilizing the proc filesystem. A modified version of virtio uses this information to suspend the transportation of packets from the guest into the network until the monitoring is ready to handle the packets further. This approach is a highly efficient realization of the task to fully observe the network traffic between virtual machines, having only a four percent loss of performance. Hence, this work presents a practical mechanism to observe virtual data exchange and research., is a possible foundation for further

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Rainer Sennwitz

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    author = {Sennwitz, Rainer},
    title = {{Effizientes Monitoring von Netzwerkdaten zwischen virtuellen Maschinen}},
    advisor = {Limmer, Tobias and Dressler, Falko},
    institution = {Department of Computer Science},
    location = {Erlangen, Germany},
    month = {3},
    school = {Friedrich--Alexander University of Erlangen--Nuremberg (FAU)},
    type = {Master's Thesis},
    year = {2011},

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