{"id":32586,"date":"2019-10-31T21:47:51","date_gmt":"2019-10-31T18:47:51","guid":{"rendered":"https:\/\/prohoster.info\/blog\/kompaniya-cloudflare-opublikovala-xdpcap-analizator-trafika-na-osnove-podsistemy-xdp\/"},"modified":"2019-10-31T21:47:51","modified_gmt":"2019-10-31T18:47:51","slug":"kompaniya-cloudflare-opublikovala-xdpcap-analizator-trafika-na-osnove-podsistemy-xdp","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/kompaniya-cloudflare-opublikovala-xdpcap-analizator-trafika-na-osnove-podsistemy-xdp","title":{"rendered":"A Cloudflare k\u00f6zz\u00e9tette az xdpcap-t, egy XDP-alap\u00fa forgalomelemz\u0151t","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

A Cloudflare v\u00e1llalat bemutatta<\/a><\/noindex> ny\u00edlt projekt xdpcap<\/a><\/noindex>, amely keret\u00e9ben egy tcpdump-ra hasonl\u00edt\u00f3 h\u00e1l\u00f3zati csomag-elemz\u0151 fejleszt\u00e9sre ker\u00fcl, az XDP-alap\u00fa rendszer seg\u00edts\u00e9g\u00e9vel XDP<\/a><\/noindex> (eXpress Data Path). A projekt k\u00f3dja Go nyelven k\u00e9sz\u00fclt \u00e9s terjeszt\u00e9sre ker\u00fcl<\/a><\/noindex> BSD licenc alatt el\u00e9rhet\u0151. A projekthez tartozik elk\u00e9sz\u00fclt<\/a><\/noindex> egy k\u00f6nyvt\u00e1r az eBPF forgalomkezel\u0151k k\u00f6t\u00e9s\u00e9re Go nyelven \u00edrt alkalmaz\u00e1sokb\u00f3l.<\/p>\n

Az xdpcap eszk\u00f6z kompatibilis a tcpdump\/libpcap sz\u0171r\u00e9si kifejez\u00e9seivel \u00e9s lehet\u0151v\u00e9 teszi, hogy ugyanezen a hardveren jelent\u0151sen nagyobb forgalmat dolgozzon fel. Az xdpcap a h\u00e1l\u00f3zati verem feldolgoz\u00e1sa el\u0151tt is alkalmazhat\u00f3 hibakeres\u00e9sre, amikor a hagyom\u00e1nyos tcpdump nem haszn\u00e1lhat\u00f3, p\u00e9ld\u00e1ul DoS-t\u00e1mad\u00e1sok elleni sz\u0171r\u0151rendszerek \u00e9s terhel\u00e9seloszt\u00f3k eset\u00e9n, amelyek a Linux kernel XDP alrendszer\u00e9t haszn\u00e1lj\u00e1k, amely a csomagokat m\u00e9g a Linux kernel h\u00e1l\u00f3zati verem feldolgoz\u00e1sa el\u0151tt kezeli (a tcpdump nem l\u00e1tja az XDP feldolgoz\u00f3 \u00e1ltal eldobott csomagokat).<\/p>\n

A magas teljes\u00edtm\u00e9ny az eBPF \u00e9s az XDP alrendszerek alkalmaz\u00e1s\u00e1nak k\u00f6sz\u00f6nhet\u0151. Az eBPF a Linux kernelbe integr\u00e1lt bytek\u00f3d \u00e9rtelmez\u0151, amely lehet\u0151v\u00e9 teszi a bej\u00f6v\u0151\/kimen\u0151 csomagok nagy teljes\u00edtm\u00e9ny\u0171 kezel\u0151inek l\u00e9trehoz\u00e1s\u00e1t, amelyek d\u00f6nt\u00e9seket hoznak azok \u00e1tir\u00e1ny\u00edt\u00e1s\u00e1r\u00f3l vagy eldob\u00e1s\u00e1r\u00f3l. A JIT-kompil\u00e1tor seg\u00edts\u00e9g\u00e9vel az eBPF bytek\u00f3dot val\u00f3s id\u0151ben g\u00e9pi utas\u00edt\u00e1sokk\u00e1 alak\u00edtj\u00e1k, amelyeket nat\u00edv k\u00f3d teljes\u00edtm\u00e9ny\u00e9vel hajtanak v\u00e9gre. Az XDP (eXpress Data Path) alrendszer kieg\u00e9sz\u00edti az eBPF-t azzal a k\u00e9pess\u00e9ggel, hogy BPF-programokat ind\u00edtson a h\u00e1l\u00f3zati illeszt\u0151program szintj\u00e9n, k\u00f6zvetlen hozz\u00e1f\u00e9r\u00e9st biztos\u00edtva a csomagok DMA-puffer\u00e9hez, \u00e9s m\u0171k\u00f6dik a skbuff puffer kioszt\u00e1s\u00e1nak el\u0151tti f\u00e1zisban.<\/p>\n

A tcpdump-hoz hasonl\u00f3an az xdpcap eszk\u00f6z kezdetben a forgalom sz\u0171r\u00e9s\u00e9nek magas szint\u0171 szab\u00e1lyait klasszikus BPF (cBPF) form\u00e1ba alak\u00edtja a libpcap be\u00e9p\u00edtett k\u00f6nyvt\u00e1r seg\u00edts\u00e9g\u00e9vel, ezt k\u00f6vet\u0151en eBPF alprogramokk\u00e1 alak\u00edtja a ford\u00edt\u00f3 seg\u00edts\u00e9g\u00e9vel cbpfc<\/a><\/noindex>, amely az LLVM\\\/Clang fejleszt\u00e9seit haszn\u00e1lja. A kimeneti forgalmi adatok standard pcap form\u00e1tumban ment\u00e9sre ker\u00fclnek, ami lehet\u0151v\u00e9 teszi a xdpcap-ben el\u0151k\u00e9sz\u00edtett forgalmi dump k\u00e9s\u0151bbi vizsg\u00e1lat\u00e1t tcpdump \u00e9s m\u00e1s l\u00e9tez\u0151 forgalomelemz\u0151k seg\u00edts\u00e9g\u00e9vel. P\u00e9ld\u00e1ul, a DNS forgalmi adatok r\u00f6gz\u00edt\u00e9s\u00e9re a «tcpdump ip and udp port 53» parancs helyett futtathatja a «xdpcap \\\/path\\\/to\\\/hook capture.pcap ‘ip and udp port 53′» parancsot, majd felhaszn\u00e1lhatja a capture.pcap f\u00e1jlt, p\u00e9ld\u00e1ul a «tcpdump -r» vagy a Wireshark programban.<\/p>\n

<\/a><\/noindex><\/p>\n

Forr\u00e1s: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Cloudflare \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b\u0430 \u043e\u0442\u043a\u0440\u044b\u0442\u044b\u0439 \u043f\u0440\u043e\u0435\u043a\u0442 xdpcap, \u0432 \u0440\u0430\u043c\u043a\u0430\u0445 \u043a\u043e\u0442\u043e\u0440\u043e\u0433\u043e \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u0442\u0441\u044f \u043f\u043e\u0445\u043e\u0436\u0438\u0439 \u043d\u0430 tcpdump \u0430\u043d\u0430\u043b\u0438\u0437\u0430\u0442\u043e\u0440 \u0441\u0435\u0442\u0435\u0432\u044b\u0445 \u043f\u0430\u043a\u0435\u0442\u043e\u0432, \u043f\u043e\u0441\u0442\u0440\u043e\u0435\u043d\u043d\u044b\u0439 \u043d\u0430 \u043e\u0441\u043d\u043e\u0432\u0435 \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u044b XDP (eXpress Data Path). \u041a\u043e\u0434 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 \u043d\u0430\u043f\u0438\u0441\u0430\u043d \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 Go \u0438 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u0442\u0441\u044f \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 BSD. \u041f\u0440\u043e\u0435\u043a\u0442\u043e\u043c \u0442\u0430\u043a\u0436\u0435 \u043f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043b\u0435\u043d\u0430 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0430 \u0434\u043b\u044f \u043f\u0440\u0438\u0432\u044f\u0437\u043a\u0438 eBPF-\u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u043e\u0432 \u0442\u0440\u0430\u0444\u0438\u043a\u0430 \u0438\u0437 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439 \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 Go. \u0423\u0442\u0438\u043b\u0438\u0442\u0430 xdpcap \u0441\u043e\u0432\u043c\u0435\u0441\u0442\u0438\u043c\u0430 \u0441 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u044f\u043c\u0438 \u0444\u0438\u043b\u044c\u0442\u0440\u0430\u0446\u0438\u0438 tcpdump\/libpcap […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-32586","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47A Cloudflare k\u00f6zz\u00e9tette az xdpcap-t, amely egy forgalomelemz\u0151 az XDP alrendszer\u00e9re \u00e9p\u00edtve | ProHoster","description":"A Cloudflare bemutatott egy ny\u00edlt projektet","canonical_url":"https:\/\/prohoster.info\/hu\/blog\/news\/kompaniya-cloudflare-opublikovala-xdpcap-analizator-trafika-na-osnove-podsistemy-xdp","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"hu_HU","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Cloudflare \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u0430 xdpcap, \u0430\u043d\u0430\u043b\u0438\u0437\u0430\u0442\u043e\u0440 \u0442\u0440\u0430\u0444\u0438\u043a\u0430 \u043d\u0430 \u043e\u0441\u043d\u043e\u0432\u0435 \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u044b XDP | ProHoster","og:description":"\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Cloudflare \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b\u0430 \u043e\u0442\u043a\u0440\u044b\u0442\u044b\u0439 \u043f\u0440\u043e\u0435\u043a\u0442","og:url":"https:\/\/prohoster.info\/hu\/blog\/news\/kompaniya-cloudflare-opublikovala-xdpcap-analizator-trafika-na-osnove-podsistemy-xdp","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2019-10-31T18:47:51+00:00","article:modified_time":"2019-10-31T18:47:51+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"32586","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":null,"schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"seo_analyzer_scan_date":"2026-01-21 11:37:20","breadcrumb_settings":null,"limit_modified_date":false,"reviewed_by":null,"ai":null,"created":"2021-03-01 02:56:29","updated":"2026-01-21 11:37:20","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/posts\/32586","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/comments?post=32586"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/posts\/32586\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/media?parent=32586"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/categories?post=32586"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/tags?post=32586"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}