{"id":101359,"date":"2021-09-21T22:22:43","date_gmt":"2021-09-21T20:22:43","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/predstavlen-modul-yadra-sposobnyj-v-razy-uskorit-openvpn"},"modified":"2021-09-21T22:22:43","modified_gmt":"2021-09-21T20:22:43","slug":"predstavlen-modul-yadra-sposobnyj-v-razy-uskorit-openvpn","status":"publish","type":"post","link":"https:\/\/prohoster.info\/nl\/blog\/news\/predstavlen-modul-yadra-sposobnyj-v-razy-uskorit-openvpn","title":{"rendered":"Er is een kernelmodule gepresenteerd die OpenVPN vele malen sneller kan maken","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>De ontwikkelaars van het OpenVPN-pakket voor het cre\u00ebren van virtuele particuliere netwerken hebben de ovpn-dco kernelmodule gepresenteerd, waarmee de VPN-prestaties aanzienlijk kunnen worden versneld. Hoewel de module momenteel wordt ontwikkeld met de focus op de linux-next tak en de status van experimenteel heeft, heeft het al een stabiliteitsniveau bereikt dat het mogelijk maakt om deze in te zetten voor het OpenVPN Cloud-dienst.    <\/p>\n<p>In vergelijking met een configuratie op basis van de tun-interface heeft het gebruik van de module aan zowel de client- als de serverzijde met de AES-256-GCM-codering geleid tot een toename van de doorvoersnelheid met 8 keer (van 370 Mbit\/s naar 2950 Mbit\/s). Wanneer de module alleen aan de clientzijde wordt toegepast, is de doorvoersnelheid voor outgoing verkeer met het drievoudige toegenomen, terwijl deze voor incoming verkeer onveranderd is gebleven. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/nl\/server\/dts-los-angeles\/\"   title=\"de server\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3753\">de server<\/a>  De doorvoersnelheid is vier keer toegenomen voor incoming verkeer en met 35% voor outgoing verkeer.    <center><img decoding=\"async\" alt=\"Er is een kernelmodule gepresenteerd die OpenVPN vele malen sneller kan maken\" src=\"\/wp-content\/uploads\/2021\/09\/31c2b2ba9c04019c30b2dc5fd87e9afa.png\" style=\"display:block;margin: 0 auto;\" \/><\/center>        <\/p>\n<p>De versnelling wordt bereikt doordat alle versleutelingsoperaties, pakketverwerking en beheer van de communicatieverbinding naar de Linux-kern worden verplaatst, wat de overheadkosten die met contextwisselingen gepaard gaan, elimineert. Dit biedt de mogelijkheid om de werking te optimaliseren door directe toegang tot de interne API van de kernel te krijgen en voorkomt vertraging van gegevensoverdracht tussen de kernel en de gebruikersruimte (versleuteling, ontsleuteling en routering worden uitgevoerd door de module zonder verkeer naar de handler in de gebruikersruimte te sturen).     <\/p>\n<p>Het wordt opgemerkt dat met name middelenintensievere versleutelingsoperaties en vertragingen veroorzaakt door contextwisselingen een negatieve invloed op de prestaties hebben. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/nl\/vpn\/\"   title=\"VPN\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"181\">VPN<\/a> Voor de versnelling van de versleuteling werden processorextensies zoals Intel AES-NI gebruikt, maar de contextwisselingen bleven een knelpunt tot de komst van ovpn-dco. Naast het gebruik van de door de processor aangeboden instructies om de versleuteling te versnellen, zorgt de ovpn-dco-module ook voor de splitsing van versleutelingsoperaties in afzonderlijke segmenten en hun verwerking in multi-threaded modus, wat de inzet van alle beschikbare CPU-kernen mogelijk maakt.      <\/p>\n<p>Vanwege de huidige implementatiebeperkingen, die in de toekomst zullen worden verholpen, is er alleen ondersteuning voor de AEAD- en 'none' (zonder authenticatie) modus, en de encryptie-algoritmen AES-GCM en CHACHA20POLY1305. Ondersteuning voor DCO wordt gepland voor opname in de release van OpenVPN 2.6, die voor het vierde kwartaal van dit jaar staat gepland. Momenteel wordt de module getest in de lopende b\u00e8taversie van de OpenVPN3 Linux-client en in experimentele builds van de OpenVPN-server voor Linux. Een soortgelijke ovpn-dco-win module wordt ook ontwikkeld voor de Windows-kernel.<br \/>\n<br \/>Bron: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=55843\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 \u043f\u0430\u043a\u0435\u0442\u0430 \u0434\u043b\u044f \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u044c\u043d\u044b\u0445 \u0447\u0430\u0441\u0442\u043d\u044b\u0445 \u0441\u0435\u0442\u0435\u0439 OpenVPN \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b\u0438 \u043c\u043e\u0434\u0443\u043b\u044c \u044f\u0434\u0440\u0430 ovpn-dco, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0439 \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u0435\u043d\u043d\u043e \u0443\u0441\u043a\u043e\u0440\u0438\u0442\u044c \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u044c VPN. \u041d\u0435\u0441\u043c\u043e\u0442\u0440\u044f \u043d\u0430 \u0442\u043e, \u0447\u0442\u043e \u043c\u043e\u0434\u0443\u043b\u044c \u043f\u043e\u043a\u0430 \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u0442\u0441\u044f \u0441 \u043e\u0433\u043b\u044f\u0434\u043a\u043e\u0439 \u0442\u043e\u043b\u044c\u043a\u043e \u043d\u0430 \u0432\u0435\u0442\u043a\u0443 linux-next \u0438 \u0438\u043c\u0435\u0435\u0442 \u0441\u0442\u0430\u0442\u0443\u0441 \u044d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u0430\u043b\u044c\u043d\u043e\u0433\u043e, \u043e\u043d \u0443\u0436\u0435 \u0434\u043e\u0441\u0442\u0438\u0433 \u0443\u0440\u043e\u0432\u043d\u044f \u0441\u0442\u0430\u0431\u0438\u043b\u044c\u043d\u043e\u0441\u0442\u0438, \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u0432\u0448\u0435\u0433\u043e \u0437\u0430\u0434\u0435\u0439\u0441\u0442\u0432\u043e\u0432\u0430\u0442\u044c \u0435\u0433\u043e \u0434\u043b\u044f \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u0441\u0435\u0440\u0432\u0438\u0441\u0430 OpenVPN Cloud. \u041f\u043e \u0441\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u044e \u0441 \u043a\u043e\u043d\u0444\u0438\u0433\u0443\u0440\u0430\u0446\u0438\u0435\u0439 \u043d\u0430 \u043e\u0441\u043d\u043e\u0432\u0435 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u0430 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":101360,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-101359","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All 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