{"id":53598,"date":"2019-12-05T00:00:00","date_gmt":"2019-12-04T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/vypusk-paketnogo-filtra-nftables-0-9-3"},"modified":"2020-02-18T14:01:31","modified_gmt":"2020-02-18T11:01:31","slug":"vypusk-paketnogo-filtra-nftables-0-9-3","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/news\/vypusk-paketnogo-filtra-nftables-0-9-3","title":{"rendered":"Pakettfiltri nftables v\u00e4ljaanne 0.9.3","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><noindex><a rel=\"nofollow\" href=\"https:\/\/marc.info\/?l=linux-netdev&#038;m=157532146517289&#038;w=2\">Avaldatud<\/a><\/noindex> paketifiltri v\u00e4ljalaskmine <noindex><a rel=\"nofollow\" href=\"https:\/\/netfilter.org\/projects\/nftables\/\">nftables 0.9.3<\/a><\/noindex>, mis areneb vahetus iptables, ip6tables, arptables ja ebtables kaudu, \u00fchtlustades IPv4, IPv6, ARP ja v\u00f5rgu sildade pakettide filtreerimise liideseid. nftables pakett sisaldab kasutusruumi paketifiltri komponente, samas kui tuuma tasemel t\u00e4idab t\u00f6\u00f6d nf_tables alams\u00fcsteem, mis on Linuxi tuumas alates versioonist 3.13. N\u00f5utud muudatused nftables 0.9.3 t\u00f6\u00f6ks on kaasatud tulevasse Linuxi tuuma harusse 5.5.<\/p>\n<p>Tuuma tasandil pakutakse vaid \u00fcldist liidest, mis ei ole s\u00f5ltuv konkreetsetest protokollidest ning mis pakub baasfunktsioone andmete paketist v\u00e4ljav\u00f5tmiseks, andmetega t\u00f6\u00f6tamiseks ja voogude haldamiseks. Filtrimise loogika ja protokollispetsiifilised t\u00f6\u00f6tlejad kompileeritakse byte-koodiks kasutaja ruumis, seej\u00e4rel laaditakse see byte-kood tuumasse Netlinki liidese abil ja seda t\u00e4idetakse spetsiaalses virtuaalses masinas, mis meenutab BPF-i (Berkeley Packet Filters). Selline l\u00e4henemine v\u00f5imaldab m\u00e4rkimisv\u00e4\u00e4rselt v\u00e4hendada tuumal t\u00f6\u00f6tava filtreerimiskoodi suurust ning viia k\u00f5ik reeglite anal\u00fc\u00fcsi ja protokollidega t\u00f6\u00f6tamise funktsioonid kasutaja ruumi.<\/p>\n<p>P\u00f5hilised uuendused:<\/p>\n<ul>\n<li class=\"l\"> Pakettide ajakohandamise tugi. Saate m\u00e4\u00e4rata ajavahemikud ja kuup\u00e4evad, millal reegel aktiveerub, samuti seadistada aktiveerimist n\u00e4dalap\u00e4evadel. Samuti on lisatud uus valik &#171;-T&#187; ajavahemike sekundites v\u00e4ljundiks.\n<p>     meta aeg &#092;&#187;2019-12-24 16:00&#092;&#187; &#8212; &#092;&#187;2020-01-02 7:00&#092;&#187;<br \/>\n     meta tund &#092;&#187;17:00&#092;&#187; &#8212; &#092;&#187;19:00&#092;&#187;<br \/>\n     meta p\u00e4ev &#092;&#187;Reede&#092;&#187;<\/p>\n<li class=\"l\"> SELinuxi (secmark) m\u00e4rkide taastamise ja salvestamise tugi.\n<p>     ct secmark set meta secmark<br \/>\n     meta secmark set ct secmark<\/p>\n<li class=\"l\"> Map-listide (synproxy) tugi, mis v\u00f5imaldavad m\u00e4\u00e4rata rohkem kui \u00fche reegli tagapinnale.\n<p>    table ip foo {<br \/>\n            synproxy https-synproxy {<br \/>\n                    mss 1460<br \/>\n                    wscale 7<br \/>\n                    timestamp sack-perm<br \/>\n            }<\/p>\n<p>            synproxy other-synproxy {<br \/>\n                    mss 1460<br \/>\n                    wscale 5<br \/>\n            }<\/p>\n<p>            chain pre {<br \/>\n                    type filter hook prerouting priority raw; policy accept;<br \/>\n                    tcp dport 8888 tcp flags syn notrack<br \/>\n            }<\/p>\n<p>            chain bar {<br \/>\n                    type filter hook forward priority filter; policy accept;<br \/>\n                    ct olek vigane, j\u00e4lgimata synproxy nimi ip saddr kaardistamine { 192.168.1.0\/24 : &#171;https-synproxy&#187;, 192.168.2.0\/24 : &#171;other-synproxy&#187; }<br \/>\n            }<br \/>\n     }<\/p>\n<li class=\"l\"> D\u00fcnaamiline elementide eemaldamise v\u00f5imalus set-kogumitest pakettide t\u00f6\u00f6tlemise reeglitest.\n<p>     nft lisa reegel &#8230; kustuta @set5 { ip6 saddr . ip6 daddr }<\/p>\n<li class=\"l\"> VLAN-i m\u00e4\u00e4ramine vastavalt identifikaatorile ja protokollile, mis on m\u00e4\u00e4ratletud v\u00f5rgu silla liidese metaandmetes;\n<p>        meta ibrpvid 100<br \/>\n        meta ibrvproto vlan<\/p>\n<li class=\"l\"> Valik &#171;-t&#187; (&#171;&#8212;terse&#187;) set-gruppide elementide v\u00e4ljaj\u00e4tmiseks reeglite kuvamisel. T\u00e4itmisel &#171;nft -t list ruleset&#187; v\u00e4ljundiks saadud:\n<p>    table ip x {<br \/>\n        set y {<br \/>\n                type ipv4_addr<br \/>\n        }<br \/>\n    }<\/p>\n<p>Ja kui &#171;nft list ruleset&#187;<\/p>\n<p>    table ip x {<br \/>\n        set y {<br \/>\n                type ipv4_addr<br \/>\n                elements = { 192.168.10.2, 192.168.20.1,<br \/>\n                             192.168.4.4, 192.168.2.34 }<br \/>\n        }<br \/>\n    }<\/p>\n<li class=\"l\"> V\u00f5imalus m\u00e4\u00e4rata rohkem kui \u00fcks seade netdev-ahelates (t\u00f6\u00f6tab ainult tuuma 5.5-ga) t\u00fc\u00fcppakettide filtreerimise reeglite \u00fchendamiseks.\n<p>     add table netdev x<br \/>\n     lisa ahel netdev x y { &#092;<br \/>\n        type filter hook ingress devices = { eth0, eth1 } priority 0;<br \/>\n     }<\/p>\n<li class=\"l\"> V\u00f5imalus lisada andmet\u00fc\u00fcpide kirjeldusi.\n<p>    # nft describe ipv4_addr<br \/>\n    datatype ipv4_addr (IPv4 address) (basetype integer), 32 bits<\/p>\n<li class=\"l\"> V\u00f5imalus ehitada CLI-liides linenoise teegi abil libreadline'i asemel.\n<p>     .\/configure &#8212;with-cli=linenoise<\/p>\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Allikas: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51980\">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 0.9.3, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u044e\u0449\u0435\u0433\u043e\u0441\u044f \u0432 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435 \u0437\u0430\u043c\u0435\u043d\u044b iptables, ip6table, arptables \u0438 ebtables \u0437\u0430 \u0441\u0447\u0451\u0442 \u0443\u043d\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u043e\u0432 \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. \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 \u044f\u0434\u0440\u0430 \u0440\u0430\u0431\u043e\u0442\u0443 \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0438\u0432\u0430\u0435\u0442 \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u0430 nf_tables, \u0432\u0445\u043e\u0434\u044f\u0449\u0430\u044f \u0432 \u0441\u043e\u0441\u0442\u0430\u0432 \u044f\u0434\u0440\u0430 Linux [&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-53598","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.0.1 - 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\" \/>\n\t<meta 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