Information Security and Digital Forensics: First by Dasun Weerasinghe

By Dasun Weerasinghe

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Read or Download Information Security and Digital Forensics: First International Conference, ISDF 2009, London, United Kingdom, September 7-9, 2009, Revised Selected Papers ... and Telecommunications Engineering) PDF

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Additional info for Information Security and Digital Forensics: First International Conference, ISDF 2009, London, United Kingdom, September 7-9, 2009, Revised Selected Papers ... and Telecommunications Engineering)

Example text

This has made the concept quite fascinating for the research community [16]. Virtualization in information technology is the technique of creating a number of machines (guest machines) running on top of a physical machine (host machine). The guest machines use the hardware of the host machine and can manage multiple instances of applications running guest operating systems. 1 Hosted Virtualization This is also called as operating system (OS) based virtualization because the virtual layer on the host OS runs multiple instances of the guest OS.

Overall Linux performed quite well in comparison to Windows and Free BSD for both UDP and TCP traffic. 1 UDP Traffic • All platforms respond well for packet sizes greater than 512 Bytes. • For packet sizes of 128 Bytes and 256 Bytes, Linux performs significantly better than others; however its performance declines above 250 Mbps loading. Windows and Free BSD performed well for 128 Bytes at 100 Mbps traffic-load only. • All OS platforms non responsive at packet sizes of 128 Bytes and 256 Bytes above 500 Mbps of traffic-loads.

34 M. Akhlaq et al. • Windows shows good performance for 128 Bytes packet sizes at 100 Mbps loading only. Its performance is compromised at higher loading levels as shown in Figure 3. The system also found non responsive at traffic-loads of 750 Mbps and above. • Free BSD performs slightly better than Windows as shown in Figure 3. The system also found non responsive at traffic-loads of 750 Mbps and above. 2 Snort Response for Packet Size – 512 & 1024 Bytes • Linux shows quite good performance for traffic-load upto 500 Mbps for all packet sizes as shown in Figure 4.

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