{"id":102342,"date":"2021-11-20T15:36:48","date_gmt":"2021-11-20T13:36:48","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-paketnogo-filtra-nftables-1-0-1"},"modified":"2021-11-20T15:36:48","modified_gmt":"2021-11-20T13:36:48","slug":"vypusk-paketnogo-filtra-nftables-1-0-1","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/news\/vypusk-paketnogo-filtra-nftables-1-0-1","title":{"rendered":"Nftables paketifiltri v\u00e4ljaanne 1.0.1","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>On v\u00e4lja antud nftables paketifiltri v\u00e4ljaanne 1.0.1, mis \u00fchtlustab pakettide filtreerimise liideseid IPv4, IPv6, ARP ja v\u00f5rgu sildade jaoks (eesm\u00e4rk on asendada iptables, ip6tables, arptables ja ebtables). Nftables 1.0.1 toimimiseks vajalikud muudatused on kaasatud Linuxi tuumikusse 5.16-rc1.      <\/p>\n<p>Nftables'i paketti kuuluvad kasutajaruumi t\u00f6\u00f6tavad pakettfilteri komponendid, samas kui tuuma tasemel tagab t\u00f6\u00f6 nf_tables s\u00fcsteem, mis on osa Linuxi tuumast alates versioonist 3.13. Tuuma tasemel pakutakse vaid \u00fcldist liidest, mis ei s\u00f5ltu konkreetsest protokollist ja pakub p\u00f5hifunktsioone andmete v\u00e4ljav\u00f5tmiseks pakettidest, andmetega t\u00f6\u00f6tamiseks ja voogude haldamiseks.    <\/p>\n<p>Filtreerimise reeglid ja protokollile spetsiifilised t\u00f6\u00f6tlejad kompileeritakse kasutajaruumi baidikoodiks, seej\u00e4rel laaditakse see baidikood tuuma Netlink liidese abil ja t\u00e4idetakse tuumas spetsiaalses <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/et\/vps\/abuzoustojchivye-vps\/\"   title=\"virtuaalses masinas\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"4318\">virtuaalses masinas<\/a>, mis meenutab BPF-i (Berkeley Packet Filters). Selline l\u00e4henemine v\u00f5imaldab oluliselt v\u00e4hendada tuuma tasemel t\u00f6\u00f6tava filtreerimiskoodi suurust ja viia k\u00f5ik reeglite t\u00f5lgendamise ja protokollidega t\u00f6\u00f6tamise funktsioonid kasutajaruumi.    <\/p>\n<p>Peamised uuendused:  <\/p>\n<ul>\n<li class=\"l\"> Suurenenud m\u00e4lu kokkuhoid suurte set- ja map-loendite laadimisel.\n<li class=\"l\"> Set- ja map-loendite taask\u00e4ivitamine on kiirem.\n<li class=\"l\"> Valitud tabelite ja ahelate v\u00e4ljastamine suurtel reeglite kogumitel on kiirenenud. N\u00e4iteks k\u00e4skluse &#171;nft list ruleset&#187; t\u00e4itmise aeg reeglikogumi v\u00e4ljastamiseks, mis sisaldab 100 000 rida, on 3.049 sekundit, samas kui ainult nat ja filter tabelite v\u00e4ljastamine (&#171;nft list table nat&#187;, &#171;nft list table filter&#187;) l\u00fcheneb 1.969 ja 0.697 sekundini.\n<li class=\"l\"> Suure set- ja map-loendiga reeglite t\u00f6\u00f6tlemisel on kiirendatud p\u00e4ringute t\u00e4itmine &#171;&#8212;terse&#187; valiku kasutamisel.\n<li class=\"l\"> On saadud v\u00f5imalus filtreerida liiklust &#171;egress&#187; ahelast, mis t\u00f6\u00f6deldakse samal tasemel, mis egress-t\u00f6\u00f6tlija netdev ahelas (hook egress), s.o. siis, kui draiver saab paketi tuumav\u00f5rgu virnast.       table netdev filter {          chain egress {                  type filter hook egress devices = { eth0, eth1 } priority 0;                  meta priority set ip saddr map { 192.168.10.2 : abcd:2,   192.168.10.3 : abcd:3 }          }    }\n<li class=\"l\"> On lubatud kaardistada ja muuta paketi pealkirja ja sisu baidid m\u00e4\u00e4ratud nihkega.      # nft add rule x y @ih,32,32 0x14000000 counter    # nft add rule x y @ih,32,32 set 0x14000000 counter    <\/ul>\n<p>Allikas: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=56192\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0432\u044b\u043f\u0443\u0441\u043a \u043f\u0430\u043a\u0435\u0442\u043d\u043e\u0433\u043e \u0444\u0438\u043b\u044c\u0442\u0440\u0430 nftables 1.0.1, \u0443\u043d\u0438\u0444\u0438\u0446\u0438\u0440\u0443\u044e\u0449\u0435\u0433\u043e \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u044b \u0444\u0438\u043b\u044c\u0442\u0440\u0430\u0446\u0438\u0438 \u043f\u0430\u043a\u0435\u0442\u043e\u0432 \u0434\u043b\u044f IPv4, IPv6, ARP \u0438 \u0441\u0435\u0442\u0435\u0432\u044b\u0445 \u043c\u043e\u0441\u0442\u043e\u0432 (\u043d\u0430\u0446\u0435\u043b\u0435\u043d \u043d\u0430 \u0437\u0430\u043c\u0435\u043d\u0443 iptables, ip6table, arptables \u0438 ebtables). \u041d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u044b\u0435 \u0434\u043b\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u0432\u044b\u043f\u0443\u0441\u043a\u0430 nftables 1.0.1 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0432\u043a\u043b\u044e\u0447\u0435\u043d\u044b \u0432 \u0441\u043e\u0441\u0442\u0430\u0432 \u044f\u0434\u0440\u0430 Linux 5.16-rc1. \u0412 \u043f\u0430\u043a\u0435\u0442 nftables \u0432\u0445\u043e\u0434\u044f\u0442 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u044b \u043f\u0430\u043a\u0435\u0442\u043d\u043e\u0433\u043e \u0444\u0438\u043b\u044c\u0442\u0440\u0430, \u0440\u0430\u0431\u043e\u0442\u0430\u044e\u0449\u0438\u0435 \u0432 \u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0441\u0442\u0432\u0435 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f, \u0432 \u0442\u043e \u0432\u0440\u0435\u043c\u044f \u043a\u0430\u043a \u043d\u0430 \u0443\u0440\u043e\u0432\u043d\u0435 [&hellip;]<\/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-102342","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0432\u044b\u043f\u0443\u0441\u043a \u043f\u0430\u043a\u0435\u0442\u043d\u043e\u0433\u043e \u0444\u0438\u043b\u044c\u0442\u0440\u0430 nftables 1.0.1, 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