A Novel Protective Framework for Defeating HTTP-Based Denial of Service and Distributed Denial of Service Attacks

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ascent="3443" descent="-2856" horiz-adv-x="358" vert-adv-y="358"></glyph.data></g></svg></td></tr><tr><td colspan="2">$hdr<svg height="11.4781pt" id="M15" style="vertical-align:-2.18977pt" version="1.1" viewbox="-0.0498162 -9.28833 4.77108 11.4781" width="4.77108pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M297 -163V-131C189 -122 187 -119 187 -41V582C187 660 190 663 297 672V704H122V-163H297Z" id="g50-92"></path><glyph.data ascent="3443" descent="-2856" horiz-adv-x="358" vert-adv-y="358"></glyph.data></g></svg>‘Host’<svg height="11.4781pt" id="M16" style="vertical-align:-2.18977pt" version="1.1" viewbox="-0.0498162 -9.28833 4.77108 11.4781" width="4.77108pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M237 -163V704H62V672C170 663 172 660 172 582V-40C172 -118 170 -122 62 -131V-163H237Z" id="g50-94"></path><glyph.data ascent="3443" descent="-2856" horiz-adv-x="358" vert-adv-y="358"></glyph.data></g></svg></td></tr><tr><td colspan="2">$_COOKIE<svg height="11.4781pt" id="M17" style="vertical-align:-2.18977pt" version="1.1" viewbox="-0.0498162 -9.28833 4.77108 11.4781" width="4.77108pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M297 -163V-131C189 -122 187 -119 187 -41V582C187 660 190 663 297 672V704H122V-163H297Z" id="g50-92"></path><glyph.data ascent="3443" descent="-2856" horiz-adv-x="358" vert-adv-y="358"></glyph.data></g></svg>‘cookie’<svg height="11.4781pt" id="M18" style="vertical-align:-2.18977pt" version="1.1" viewbox="-0.0498162 -9.28833 4.77108 11.4781" width="4.77108pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M237 -163V704H62V672C170 663 172 660 172 582V-40C172 -118 170 -122 62 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<div>Request’s headers checked by the STBOA algorithm.</div>

The Scientific World Journal

alg2

Algorithm 2

Algorithm 2: A Novel Protective Framework for Defeating HTTP-Based Denial of Service and Distributed Denial of Service Attacks 