{"id":2916,"date":"2021-07-01T00:00:52","date_gmt":"2021-06-30T22:00:52","guid":{"rendered":"https:\/\/cyberawareness.sk\/?p=2916"},"modified":"2026-03-27T12:05:25","modified_gmt":"2026-03-27T11:05:25","slug":"spracovanie-sietovych-prevadzkovych-udajov-netflow","status":"publish","type":"post","link":"https:\/\/cyberawareness.sk\/en\/2021\/07\/01\/spracovanie-sietovych-prevadzkovych-udajov-netflow\/","title":{"rendered":"Spracovanie sie\u0165ov\u00fdch prev\u00e1dzkov\u00fdch \u00fadajov netflow"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"2916\" class=\"elementor elementor-2916\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fa18013 e-flex e-con-boxed e-con e-parent\" data-id=\"fa18013\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-6e108e7 e-flex e-con-boxed e-con e-child\" data-id=\"6e108e7\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-749fbad elementor-widget elementor-widget-ucaddon_square_icon_box\" data-id=\"749fbad\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"ucaddon_square_icon_box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\n<!-- start Icon Box -->\n\t\t<link id='font-awesome-css' href='https:\/\/cyberawareness.sk\/wp-content\/plugins\/unlimited-elements-for-elementor\/assets_libraries\/font-awesome6\/fontawesome-all.min.css' type='text\/css' rel='stylesheet' >\n\t\t<link id='font-awesome-4-shim-css' href='https:\/\/cyberawareness.sk\/wp-content\/plugins\/unlimited-elements-for-elementor\/assets_libraries\/font-awesome6\/fontawesome-v4-shims.min.css' type='text\/css' rel='stylesheet' >\n\t\t<link id='uc_ac_assets_file_blox_boxed_small_square_icon_box_css_0-css' href='https:\/\/cyberawareness.sk\/wp-content\/uploads\/ac_assets\/blox-boxed-small-square-icon-box\/blox-boxed-small-square-icon-box.css' type='text\/css' rel='stylesheet' >\n\n<style>\/* widget: Icon Box *\/\n\n#uc_square_icon_box_elementor_749fbad * { \n\tbox-sizing: border-box; \n}\n\n#uc_square_icon_box_elementor_749fbad{\n\tfont-family: inherit;\n    transition:0.3s;\n    position:relative;\n}\n\n#uc_square_icon_box_elementor_749fbad .blox-boxed-small-square-icon-box-icon{\n\t\n\tposition:relative;\n    display:flex;\n    justify-content:center;\n    align-items:center;\n    transform:rotate(0deg);\n    z-index:2;\n}\n#uc_square_icon_box_elementor_749fbad .ue-icon {\n  display:inline-block;\n}\n#uc_square_icon_box_elementor_749fbad .blox-boxed-small-square-icon-box-icon > div{\n\t\n\tposition:relative;\n    display:flex;\n    justify-content:center;\n    align-items:center;\n    transform:rotate(-0deg);\n}\n#uc_square_icon_box_elementor_749fbad .ue-icon-inner{\n    line-height:1em;\n\t} \t\n\n\n#uc_square_icon_box_elementor_749fbad .ue-icon-inner svg{\n    height:1em;\n    width:1em;\n\t} \t\n\t\n.blox-boxed-small-square-icon-box-heading{\n\tfont-size:21px;\n\t}\n\n\n#uc_square_icon_box_elementor_749fbad:hover\n{\n  position:relative;\n  z-index:1;\n}\n\n\n#uc_square_icon_box_elementor_749fbad .ue_box_button\n{\n  text-align:center;\n  text-decoration:none;\n  display:inline-block;\n  transition:0.3s;\n}\n\n\n#uc_square_icon_box_elementor_749fbad span.line\n{\n  display:block;\n  position:absolute;\n  top:0;\n  left:0;\n  width:0px;\n  transition:0.3s;\n}\n\n#uc_square_icon_box_elementor_749fbad:hover span.line\n{\n  width:100%;\n}\n\n#uc_square_icon_box_elementor_749fbad .ue-title-separator span\n{\n  display:inline-block;\n  transition:0.3s;\n}\n\n\n\n\n\n<\/style>\n\n<div class=\"square_icon_box\" id=\"uc_square_icon_box_elementor_749fbad\">\n  \n  \t\t  \n  \n              <div class=\"ue-icon\">\n       <a style=\"display:inline-block; text-decoration:none;\" href=\"#\" >         <div class=\"blox-boxed-small-square-icon-box-icon\" style=\"background-color: ;\">\n           <div class=\"ue-icon-inner\"><i class='fas fa-book'><\/i><\/div>\n         <\/div>\n       <\/a>       <\/div>\n         \n  \t\t        <div class=\"blox-boxed-small-square-icon-box-heading\">\n        \tPr\u00e1ca\n        <\/div>\n          \n  \t\t  \n  \n          \n  \t\t        \n          \n  \t\t  \n<\/div>\n<!-- end Icon Box -->\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8e851db elementor-widget elementor-widget-text-editor\" data-id=\"8e851db\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Autor: <\/strong>Vladim\u00edr Homola<br \/><strong>\u0160kolite\u013e:<\/strong> RNDr. Tom\u00e1\u0161 Bajto\u0161<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e5a0a23 elementor-widget elementor-widget-heading\" data-id=\"e5a0a23\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Abstrakt<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b77c4c2 elementor-widget elementor-widget-text-editor\" data-id=\"b77c4c2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>V pr\u00e1ci sa venujeme anal\u00fdze NetFlow \u00fadajov, spracovaniu bezpe\u010dnostn\u00fdch \u00fadajov a detekcii hrozieb zo sie\u0165ov\u00fdch prev\u00e1dzkov\u00fdch \u00fadajov NetFlow. Na tieto potreby sme navrhli rie\u0161enie vyu\u017e\u00edvaj\u00face met\u00f3dy strojov\u00e9ho u\u010denia, konkr\u00e9tne typu u\u010denia bez u\u010dite\u013ea (unsupervised learning). Navrhnut\u00e9 rie\u0161enie vyu\u017e\u00edva rozdelenie z\u00e1znamov NetFlow do \u010dasov\u00fdch intervalov, n\u00e1sledn\u00fa agreg\u00e1ciu \u00fadajov v t\u00fdchto intervaloch pod\u013ea zdrojov\u00fdch IP adries, normaliz\u00e1ciu a klastrovanie, kde pou\u017e\u00edvame r\u00f4zne klastrovacie algoritmy (PAM, K-means, K-means++) a 2 pr\u00edstupy klastrovania (klastrovanie cel\u00e9ho datasetu naraz alebo klastrovanie ka\u017ed\u00e9ho \u010dasov\u00e9ho okna zvl\u00e1\u0161\u0165) a ich v\u00fdsledky n\u00e1sledne aj vizualizujeme a porovn\u00e1vame medzi sebou. Na\u0161e navrhnut\u00e9 rie\u0161enie h\u013ead\u00e1 podozriv\u00e9 z\u00e1znamy o toku, konkr\u00e9tne \u00fatok distribuovan\u00e9ho odmietnutia slu\u017eieb (DDoS) a upozor\u0148uje na nich s vysokou mierou \u00faspe\u0161nosti.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e39a89a elementor-widget elementor-widget-heading\" data-id=\"e39a89a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Ciele<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-05fb267 elementor-widget elementor-widget-text-editor\" data-id=\"05fb267\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li>Anal\u00fdza sie\u0165ov\u00fdch prev\u00e1dzkov\u00fdch \u00fadajov netflow.<\/li><li>N\u00e1vrh met\u00f3dy detekcie \u00fatokov odmietnutia slu\u017eby s vyu\u017eit\u00edm \u00fadajov netflow.<\/li><li>D\u00e1tov\u00e1 anal\u00fdza zozbieran\u00fdch sie\u0165ov\u00fdch prev\u00e1dzkov\u00fdch \u00fadajov netflow.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-89aa96b elementor-widget elementor-widget-heading\" data-id=\"89aa96b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Literat\u00fara<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d149794 elementor-widget elementor-widget-text-editor\" data-id=\"d149794\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li>HOFSTEDE, Rick, et al. Flow monitoring explained: From packet capture to data analysis with netflow and ipfix. IEEE Communications Surveys &amp; Tutorials, 2014, 16.4: 2037-2064.<\/li><li>CLAISE, Benoit, et al. Cisco systems netflow services export version 9. 2004.<\/li><li>TERZI, Duygu Sinanc; TERZI, Ramazan; SAGIROGLU, Seref. Big data analytics for network anomaly detection from netflow data, In: 2017 International Conference on Computer Science and Engineering (UBMK). IEEE, 2017. p. 592-597.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a432df6 elementor-widget elementor-widget-heading\" data-id=\"a432df6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Priebeh pr\u00e1ce<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f13991a elementor-widget elementor-widget-text-editor\" data-id=\"f13991a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Zatia\u013e nezverejnen\u00e9<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Autor: Vladim\u00edr Homola<br \/>\n\u0160kolite\u013e: RNDr. Tom\u00e1\u0161 Bajto\u0161<\/p>","protected":false},"author":9,"featured_media":2397,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ocean_post_layout":"full-width","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"","ocean_second_sidebar":"","ocean_disable_margins":"enable","ocean_add_body_class":"","ocean_shortcode_before_top_bar":"","ocean_shortcode_after_top_bar":"","ocean_shortcode_before_header":"","ocean_shortcode_after_header":"","ocean_has_shortcode":"","ocean_shortcode_after_title":"","ocean_shortcode_before_footer_widgets":"","ocean_shortcode_after_footer_widgets":"","ocean_shortcode_before_footer_bottom":"","ocean_shortcode_after_footer_bottom":"","ocean_display_top_bar":"default","ocean_display_header":"default","ocean_header_style":"","ocean_center_header_left_menu":"","ocean_custom_header_template":"","ocean_custom_logo":0,"ocean_custom_retina_logo":0,"ocean_custom_logo_max_width":0,"ocean_custom_logo_tablet_max_width":0,"ocean_custom_logo_mobile_max_width":0,"ocean_custom_logo_max_height":0,"ocean_custom_logo_tablet_max_height":0,"ocean_custom_logo_mobile_max_height":0,"ocean_header_custom_menu":"","ocean_menu_typo_font_family":"","ocean_menu_typo_font_subset":"","ocean_menu_typo_font_size":0,"ocean_menu_typo_font_size_tablet":0,"ocean_menu_typo_font_size_mobile":0,"ocean_menu_typo_font_size_unit":"px","ocean_menu_typo_font_weight":"","ocean_menu_typo_font_weight_tablet":"","ocean_menu_typo_font_weight_mobile":"","ocean_menu_typo_transform":"","ocean_menu_typo_transform_tablet":"","ocean_menu_typo_transform_mobile":"","ocean_menu_typo_line_height":0,"ocean_menu_typo_line_height_tablet":0,"ocean_menu_typo_line_height_mobile":0,"ocean_menu_typo_line_height_unit":"","ocean_menu_typo_spacing":0,"ocean_menu_typo_spacing_tablet":0,"ocean_menu_typo_spacing_mobile":0,"ocean_menu_typo_spacing_unit":"","ocean_menu_link_color":"","ocean_menu_link_color_hover":"","ocean_menu_link_color_active":"","ocean_menu_link_background":"","ocean_menu_link_hover_background":"","ocean_menu_link_active_background":"","ocean_menu_social_links_bg":"","ocean_menu_social_hover_links_bg":"","ocean_menu_social_links_color":"","ocean_menu_social_hover_links_color":"","ocean_disable_title":"default","ocean_disable_heading":"default","ocean_post_title":"","ocean_post_subheading":"","ocean_post_title_style":"","ocean_post_title_background_color":"","ocean_post_title_background":0,"ocean_post_title_bg_image_position":"","ocean_post_title_bg_image_attachment":"","ocean_post_title_bg_image_repeat":"","ocean_post_title_bg_image_size":"","ocean_post_title_height":0,"ocean_post_title_bg_overlay":0.5,"ocean_post_title_bg_overlay_color":"","ocean_disable_breadcrumbs":"default","ocean_breadcrumbs_color":"","ocean_breadcrumbs_separator_color":"","ocean_breadcrumbs_links_color":"","ocean_breadcrumbs_links_hover_color":"","ocean_display_footer_widgets":"default","ocean_display_footer_bottom":"default","ocean_custom_footer_template":"","ocean_post_oembed":"","ocean_post_self_hosted_media":"","ocean_post_video_embed":"","ocean_link_format":"","ocean_link_format_target":"self","ocean_quote_format":"","ocean_quote_format_link":"post","ocean_gallery_link_images":"on","ocean_gallery_id":[],"footnotes":""},"categories":[12],"tags":[],"class_list":["post-2916","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bakalarske-prace","entry","has-media"],"_links":{"self":[{"href":"https:\/\/cyberawareness.sk\/en\/wp-json\/wp\/v2\/posts\/2916","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cyberawareness.sk\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cyberawareness.sk\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cyberawareness.sk\/en\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/cyberawareness.sk\/en\/wp-json\/wp\/v2\/comments?post=2916"}],"version-history":[{"count":26,"href":"https:\/\/cyberawareness.sk\/en\/wp-json\/wp\/v2\/posts\/2916\/revisions"}],"predecessor-version":[{"id":8803,"href":"https:\/\/cyberawareness.sk\/en\/wp-json\/wp\/v2\/posts\/2916\/revisions\/8803"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cyberawareness.sk\/en\/wp-json\/wp\/v2\/media\/2397"}],"wp:attachment":[{"href":"https:\/\/cyberawareness.sk\/en\/wp-json\/wp\/v2\/media?parent=2916"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cyberawareness.sk\/en\/wp-json\/wp\/v2\/categories?post=2916"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cyberawareness.sk\/en\/wp-json\/wp\/v2\/tags?post=2916"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}