{"id":92493,"date":"2020-08-27T19:42:43","date_gmt":"2020-08-27T17:42:43","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/v-ubuntu-20-10-planiruyut-perejti-s-iptables-na-nftables"},"modified":"2020-08-27T19:42:43","modified_gmt":"2020-08-27T17:42:43","slug":"v-ubuntu-20-10-planiruyut-perejti-s-iptables-na-nftables","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/v-ubuntu-20-10-planiruyut-perejti-s-iptables-na-nftables","title":{"rendered":"V Ubuntu 20.10 pl\u00e1nuj\u00ed p\u0159ej\u00edt z iptables na nftables.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

N\u00e1sledn\u011b Fedora<\/a><\/noindex> a Debian<\/a><\/noindex> v\u00fdvoj\u00e1\u0159i Ubuntu zva\u017euj\u00ed mo\u017enost<\/a><\/noindex> p\u0159echodu na v\u00fdchoz\u00ed pou\u017eit\u00ed bal\u00ed\u010dkov\u00e9ho filtru nftables<\/a><\/noindex>.
\nPro zachov\u00e1n\u00ed zp\u011btn\u00e9 kompatibility se navrhuje pou\u017e\u00edt bal\u00ed\u010dek iptables-nft<\/a><\/noindex>, kter\u00fd poskytuje n\u00e1stroje se stejnou syntax\u00ed p\u0159\u00edkazov\u00e9ho \u0159\u00e1dku jako iptables, ale p\u0159ev\u00e1d\u00ed z\u00edskan\u00e1 pravidla do bajtk\u00f3du nf_tables. Zm\u011bna m\u00e1 b\u00fdt zahrnuta do podzimn\u00edho vyd\u00e1n\u00ed Ubuntu 20.10.<\/p>\n

Toto je druh\u00fd pokus o p\u0159echod Ubuntu na nftables. Prvn\u00ed pokus byl podniknut minul\u00fd rok, ale byl zam\u00edtnut kv\u016fli nekompatibilit\u011b s n\u00e1stroji LXD<\/a><\/noindex>. Nyn\u00ed v LXD ji\u017e je zde<\/a><\/noindex> je zabudovan\u00e1 podpora nftables a m\u016f\u017ee pracovat s nov\u00fdm backendem pro filtrov\u00e1n\u00ed paket\u016f. Pro u\u017eivatele, kte\u0159\u00ed pot\u0159ebuj\u00ed v\u00edce ne\u017e jen kompatibiln\u00ed vrstvu, bylo<\/a><\/noindex> existuje mo\u017enost instalace klasick\u00fdch n\u00e1stroj\u016f iptables, ip6tables, arptables a ebtables se star\u00fdm backendem.<\/p>\n

P\u0159ipome\u0148me, \u017ee v bal\u00ed\u010dkov\u00e9m filtru nftables<\/a><\/noindex> jsou unified interface pro filtrov\u00e1n\u00ed paket\u016f pro IPv4, IPv6, ARP a s\u00ed\u0165ov\u00e9 mosty. Bal\u00ed\u010dek nftables obsahuje komponenty bal\u00ed\u010dkov\u00e9ho filtru, kter\u00e9 pracuj\u00ed v u\u017eivatelsk\u00e9m prostoru, zat\u00edmco na \u00farovni j\u00e1dra zaji\u0161\u0165uje funkce subsyst\u00e9m nf_tables, kter\u00fd je sou\u010d\u00e1st\u00ed j\u00e1dra Linux od verze 3.13. Na \u00farovni j\u00e1dra je poskytov\u00e1n pouze obecn\u00fd interface, kter\u00fd nez\u00e1vis\u00ed na konkr\u00e9tn\u00edm protokolu a poskytuje z\u00e1kladn\u00ed funkce pro extrakci dat z paket\u016f, prov\u00e1d\u011bn\u00ed operac\u00ed s daty a \u0159\u00edzen\u00ed toku. <\/p>\n

Pravidla filtrov\u00e1n\u00ed a specifick\u00e9 pro protokoly zpracov\u00e1va\u010de jsou kompilov\u00e1ny do bajtk\u00f3du v u\u017eivatelsk\u00e9m prostoru, po kter\u00e9m je tento bajtk\u00f3d na\u010dten do j\u00e1dra pomoc\u00ed rozhran\u00ed Netlink a vykon\u00e1v\u00e1n v j\u00e1d\u0159e ve speci\u00e1ln\u00ed virtu\u00e1ln\u00ed stroji podobn\u00e9 BPF (Berkeley Packet Filters). Tento p\u0159\u00edstup umo\u017e\u0148uje v\u00fdrazn\u011b zmen\u0161it velikost k\u00f3du filtrov\u00e1n\u00ed, kter\u00fd b\u011b\u017e\u00ed na \u00farovni j\u00e1dra, a p\u0159en\u00e9st ve\u0161ker\u00e9 funkce anal\u00fdzy pravidel a logiku zpracov\u00e1n\u00ed protokol\u016f do u\u017eivatelsk\u00e9ho prostoru.<\/p>\n

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

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

\u0421\u043b\u0435\u0434\u043e\u043c \u0437\u0430 Fedora \u0438 Debian \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 Ubuntu \u0440\u0430\u0441\u0441\u043c\u0430\u0442\u0440\u0438\u0432\u0430\u044e\u0442 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u043f\u0435\u0440\u0435\u0445\u043e\u0434\u0430 \u043d\u0430 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e \u043f\u0430\u043a\u0435\u0442\u043d\u043e\u0433\u043e \u0444\u0438\u043b\u044c\u0442\u0440\u0430 nftables. \u0414\u043b\u044f \u0441\u043e\u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u043e\u0431\u0440\u0430\u0442\u043d\u043e\u0439 \u0441\u043e\u0432\u043c\u0435\u0441\u0442\u0438\u043c\u043e\u0441\u0442\u0438 \u043f\u0440\u0435\u0434\u043b\u0430\u0433\u0430\u0435\u0442\u0441\u044f \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u043f\u0430\u043a\u0435\u0442 iptables-nft, \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0438\u0439 \u0443\u0442\u0438\u043b\u0438\u0442\u044b \u0441 \u0442\u0435\u043c \u0436\u0435 \u0441\u0438\u043d\u0442\u0430\u043a\u0441\u0438\u0441\u043e\u043c \u043a\u043e\u043c\u0430\u043d\u0434\u043d\u043e\u0439 \u0441\u0442\u0440\u043e\u043a\u0438, \u043a\u0430\u043a \u0438 \u0432 iptables, \u043d\u043e \u0442\u0440\u0430\u043d\u0441\u043b\u0438\u0440\u0443\u044e\u0449\u0438\u0439 \u043f\u043e\u043b\u0443\u0447\u0435\u043d\u043d\u044b\u0435 \u043f\u0440\u0430\u0432\u0438\u043b\u0430 \u0432 \u0431\u0430\u0439\u0442\u043a\u043e\u0434 nf_tables. \u0418\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0435 \u043f\u043b\u0430\u043d\u0438\u0440\u0443\u0435\u0442\u0441\u044f \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u044c \u0432 \u0441\u043e\u0441\u0442\u0430\u0432 \u043e\u0441\u0435\u043d\u043d\u0435\u0433\u043e \u0432\u044b\u043f\u0443\u0441\u043a\u0430 Ubuntu 20.10. \u042d\u0442\u043e \u0432\u0442\u043e\u0440\u0430\u044f […]<\/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-92493","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\udd47V Ubuntu 20.10 pl\u00e1nuj\u00ed p\u0159ej\u00edt z iptables na nftables | ProHoster","description":"Jakmile za Fedora a","canonical_url":"https:\/\/prohoster.info\/cs\/blog\/news\/v-ubuntu-20-10-planiruyut-perejti-s-iptables-na-nftables","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"cs_CZ","og:site_name":"ProHoster | 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