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Efficient Processing of Multi-connection Compressed Web Traffic

Abstract : Compressing web traffic using standard GZIP is becoming both popular and challenging due to the huge increase in wireless web devices, where bandwidth is limited. Security and other content based networking devices are required to decompress the traffic of tens of thousands concurrent connections in order to inspect the content for different signatures. The major limiting factor in this process is the high memory requirements of 32KB per connection that leads to hundreds of megabytes to gigabytes of main memory consumption. This requirement inhibits most devices from handling compressed traffic, which in turn either limits traffic compression or introduces security holes and other dysfunctionalities. In this paper we introduce new algorithms and techniques that drastically reduce this space requirement by over 80%, with only a slight increase in the time overhead, thus making real-time compressed traffic inspection a viable option for network devices.
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Yehuda Afek, Anat Bremler-Barr, Yaron Koral. Efficient Processing of Multi-connection Compressed Web Traffic. 10th IFIP Networking Conference (NETWORKING), May 2011, Valencia, Spain. pp.52-65, ⟨10.1007/978-3-642-20757-0_5⟩. ⟨hal-01583398⟩

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