{"id":104807,"date":"2022-08-10T15:37:46","date_gmt":"2022-08-10T13:37:46","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-paketnogo-filtra-nftables-1-0-5"},"modified":"2022-08-10T15:37:46","modified_gmt":"2022-08-10T13:37:46","slug":"vypusk-paketnogo-filtra-nftables-1-0-5","status":"publish","type":"post","link":"https:\/\/prohoster.info\/fr\/blog\/news\/vypusk-paketnogo-filtra-nftables-1-0-5","title":{"rendered":"Sortie du filtre de paquets nftables 1.0.5","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Publication de la version du filtre de paquets nftables 1.0.5, unifiant les interfaces de filtrage des paquets pour IPv4, IPv6, ARP et les ponts r\u00e9seau (visant \u00e0 remplacer iptables, ip6table, arptables et ebtables). Publication simultan\u00e9e de la biblioth\u00e8que associ\u00e9e libnftnl 1.2.3, fournissant une API de bas niveau pour interagir avec le sous-syst\u00e8me nf_tables.       <\/p>\n<p>Le paquet nftables comprend des composants du filtre de paquets fonctionnant dans l'espace utilisateur, tandis qu'au niveau du noyau, le fonctionnement est assur\u00e9 par la sous-syst\u00e8me nf_tables, int\u00e9gr\u00e9 dans le noyau Linux depuis la version 3.13. Au niveau du noyau, une interface g\u00e9n\u00e9rale est fournie, ind\u00e9pendante du protocole sp\u00e9cifique, offrant des fonctions de base pour l'extraction de donn\u00e9es des paquets, l'ex\u00e9cution d'op\u00e9rations sur les donn\u00e9es et la gestion de flux.    <\/p>\n<p>Les r\u00e8gles de filtrage et les gestionnaires sp\u00e9cifiques aux protocoles sont compil\u00e9s en bytecode dans l'espace utilisateur, apr\u00e8s quoi ce bytecode est charg\u00e9 dans le noyau via l'interface Netlink et ex\u00e9cut\u00e9 dans le noyau dans une structure sp\u00e9ciale <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/fr\/vps\/abuzoustojchivye-vps\/\"   title=\"une machine virtuelle\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"4326\">une machine virtuelle<\/a>, similaire aux BPF (Berkeley Packet Filters). Cette approche permet de r\u00e9duire consid\u00e9rablement la taille du code de filtrage fonctionnant au niveau du noyau et de transf\u00e9rer toutes les fonctions de parsing des r\u00e8gles et de logique de traitement des protocoles dans l'espace utilisateur.    <\/p>\n<p>Principales modifications :  <\/p>\n<ul>\n<li class=\"l\"> Dans l'optimiseur de r\u00e8gles, appel\u00e9 lors de l'utilisation de l'option \u00ab -o\/--optimize \u00bb, des probl\u00e8mes li\u00e9s \u00e0 la fusion des r\u00e8gles, des listes map et set ont \u00e9t\u00e9 r\u00e9solus.          # cat ruleset.nft       table ip x {              chain y {                      type nat hook postrouting priority srcnat; policy drop;                      ip saddr 1.1.1.1 tcp dport 8000 snat to 4.4.4.4:80                      ip saddr 2.2.2.2 tcp dport 8001 snat to 5.5.5.5:90              }       }         # nft -o -c -f ruleset.nft       Fusion :       ruleset.nft:4:3-52:                ip saddr 1.1.1.1 tcp dport 8000 snat to 4.4.4.4:80       ruleset.nft:5:3-52:                ip saddr 2.2.2.2 tcp dport 8001 snat to 5.5.5.5:90       en :              snat to ip saddr . tcp dport map { 1.1.1.1 . 8000 : 4.4.4.4 . 80, 2.2.2.2 . 8001 : 5.5.5.5 . 90 }\n<li class=\"l\"> Lors de la fusion des \u00e9l\u00e9ments ethernet et vlan, la d\u00e9finition d'une liste set dynamique, remplie sur la base des param\u00e8tres de chemin de paquet, a \u00e9t\u00e9 assur\u00e9e.         add table netdev x       add chain netdev x y { type filter hook ingress device enp0s25 priority 0;   }       add set netdev x macset { typeof ether daddr . vlan id; flags   dynamic,timeout; }       add rule netdev x y update @macset { ether daddr . vlan id timeout 60s }            add rule netdev x y ether saddr . vlan id { 0a:0b:0c:0d:0e:0f . 42,   0a:0b:0c:0d:0e:0f . 4095 } counter accept\n<li class=\"l\"> L'affichage des r\u00e8gles avec des listes map contenant des masques dans les noms d'interfaces est \u00e9tabli.         table inet filter {          chain INPUT {              iifname vmap {                  \u00abeth0\u00bb : jump input_lan,                  \u00abwg*\u00bb : jump input_vpn              }          }          chain input_lan {}          chain input_vpn {}       }\n<li class=\"l\"> Des changements regressifs entra\u00eenant une analyse lexicale incorrecte de r\u00e8gles valides ont \u00e9t\u00e9 corrig\u00e9s.\n<li class=\"l\"> Des probl\u00e8mes de traitement lent et de fusion automatique de grandes listes avec des \u00e9l\u00e9ments d\u00e9finissant des intervalles de valeurs ont \u00e9t\u00e9 r\u00e9solus.\n<li class=\"l\"> Une erreur de fermeture lors de l'ajout d'\u00e9l\u00e9ments \u00e0 une liste set incorrecte a \u00e9t\u00e9 corrig\u00e9e.    <\/ul>\n<p>Source : <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=57619\">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 1.0.5, \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). \u041e\u0434\u043d\u043e\u0432\u0440\u0435\u043c\u0435\u043d\u043d\u043e \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0432\u044b\u043f\u0443\u0441\u043a \u0441\u043e\u043f\u0443\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u0439 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 libnftnl 1.2.3, \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0435\u0439 \u043d\u0438\u0437\u043a\u043e\u0443\u0440\u043e\u0432\u043d\u0435\u0432\u044b\u0439 API \u0434\u043b\u044f \u0432\u0437\u0430\u0438\u043c\u043e\u0434\u0435\u0439\u0441\u0442\u0432\u0438\u044f \u0441 \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u043e\u0439 nf_tables. \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 [&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-104807","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2 - 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 1.0.5, \u0443\u043d\u0438\u0444\u0438\u0446\u0438\u0440\u0443\u044e\u0449\u0435\u0433\u043e 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