{"id":72951,"date":"2020-03-06T02:42:09","date_gmt":"2020-03-05T23:42:09","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/reliz-powerdns-recursor-4-3-i-knotdns-2-9-3"},"modified":"2020-03-06T02:42:09","modified_gmt":"2020-03-05T23:42:09","slug":"reliz-powerdns-recursor-4-3-i-knotdns-2-9-3","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sl\/blog\/news\/reliz-powerdns-recursor-4-3-i-knotdns-2-9-3","title":{"rendered":"Izidava PowerDNS Recursor 4.3 in KnotDNS 2.9.3","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><noindex><a rel=\"nofollow\" href=\"https:\/\/blog.powerdns.com\/2020\/03\/03\/powerdns-recursor-4-3-0-released\/\">Odr\u017ean<\/a><\/noindex> izidava predpomnilni\u0161kega DNS stre\u017enika <noindex><a rel=\"nofollow\" href=\"https:\/\/www.powerdns.com\/recursor.html\">PowerDNS Recursor 4.3<\/a><\/noindex>, ki je odgovoren za rekurzivno razre\u0161evanje imen. PowerDNS Recursor je zgrajen na isti programski osnovi kot PowerDNS Authoritative Server, vendar se rekurzivni in avtoritativni DNS stre\u017eniki PowerDNS razvijajo v okviru razli\u010dnih razvojnih ciklov in se izdajo kot lo\u010deni proizvodi. Koda projekta <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/PowerDNS\/pdns\">se distribuira<\/a><\/noindex> pod licenco GPLv2. <\/p>\n<p>Stre\u017enik omogo\u010da daljinsko zbiranje statistike, podpira takoj\u0161nje ponovne zagon, ima vgrajen motor za povezovanje obdelovalnikov v jeziku Lua, v celoti podpira DNSSEC, DNS64, RPZ (Response Policy Zones), omogo\u010da povezovanje \u010drnih seznamov. Mo\u017enost zapisovanja rezultatov razre\u0161evanja v obliki BIND datote\u010dnih con. Za zagotovitev visoke zmogljivosti se uporabljajo sodobni mehanizmi multiplexiranja povezav na FreeBSD, Linux in Solaris (kqueue, epoll, \/dev\/poll), ter visoko zmogljiv parser DNS paketov, sposoben obdelovati deset tiso\u010d hkratnih poizvedb. <\/p>\n<p>V novi razli\u010dici:<\/p>\n<ul>\n<li class=\"l\"> Z namenom prepre\u010devanja uhajanja informacij o zahtevanem domeni in pove\u010danja zasebnosti je privzeto vklopljen mehanizem <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.powerdns.com\/recursor\/settings.html#qname-minimization\">QNAME Minimization<\/a><\/noindex> (<noindex><a rel=\"nofollow\" href=\"https:\/\/datatracker.ietf.org\/doc\/rfc7816\/\">RFC-7816<\/a><\/noindex>), ki deluje v na\u010dinu &#171;relaxed&#187;. Osnovni mehanizem deluje tako, da resolver v svojih poizvedbah k nadrejenemu stre\u017eniku imen ne omeni popolnega imena iskane gostiteljske domene. Na primer, pri iskanju naslova za gostitelja foo.bar.baz.com resolver po\u0161lje avtoriziranemu stre\u017eniku za domeno &#171;.com&#187; poizvedbo &#171;QTYPE=NS,QNAME=baz.com&#187;, ne da bi omenjal &#171;foo.bar&#187;. V trenutni obliki je omogo\u010deno delovanje v na\u010dinu &#171;relaxed&#187;.\n<li class=\"l\"> Omogo\u010deno je bele\u017eenje odhodnih poizvedb k avtoriziranemu stre\u017eniku in njihovih odgovorov v formatu dnstap (za uporabo je potrebna izgradnja z opcijo &#171;&#8212;enable-dnstap&#187;.\n<li class=\"l\"> Zagotavljena je so\u010dasna obdelava ve\u010d prihodnjih poizvedb, poslanih prek TCP povezave, z vra\u010danjem rezultatov, ko so na voljo, in ne po vrsti poizvedb v \u010dakalni vrsti. Omejitev so\u010dasnih poizvedb je dolo\u010dena z nastavitvijo &#171;<noindex><a rel=\"nofollow\" href=\"https:\/\/docs.powerdns.com\/recursor\/settings.html#max-concurrent-requests-per-tcp-connection\">max-concurrent-requests-per-tcp-connection<\/a><\/noindex>&#171;.\n<li class=\"l\"> Implementirana je tehnika sledenja novim domenam <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.powerdns.com\/recursor\/nod_udr.html\">NOD<\/a><\/noindex> (Novi opa\u017eeni domen), koji se mo\u017ee koristiti za identifikaciju sumnjivih domena ili domena povezanih s zlonamernim aktivnostima, kao \u0161to su distribucija zlo\u0107udnog softvera, u\u010de\u0161\u0107e u fi\u0161ingu i kori\u0161\u0107enje za upravljanje botnetovima. Metod se oslanja na identifikaciju domena koji prethodno nisu bili pregledani, i analizu ovih novih domena. Umesto pra\u0107enja novih domena u potpunoj bazi svih ikada pregledanih domena, \u010dija je odr\u017eavanje resursno zahtevan, u NOD se primenjuje probabilisti\u010dka struktura. <noindex><a rel=\"nofollow\" href=\"http:\/\/webdocs.cs.ualberta.ca\/~drafiei\/papers\/DupDet06Sigmod.pdf\">SBF<\/a><\/noindex> (Stable Bloom Filter), ki omogo\u010da zmanj\u0161anje porabe pomnilnika in CPU. Za omogo\u010ditev je treba v nastavitvah navesti &#171;new-domain-tracking=yes&#187;.\n<li class=\"l\"> Prilikom pokretanja pod upravljanjem systemd, proces PowerDNS Recursor sada se izvr\u0161ava kao obi\u010dan korisnik pdns-recursor umesto kao root. Za sisteme bez systemd i bez chroot, podrazumevano se koristi direktorijum \/var\/run\/pdns-recursor za skladi\u0161tenje kontrolnog soketa i pid datoteke.\n<\/ul>\n<p>Pored toga, <noindex><a rel=\"nofollow\" href=\"https:\/\/www.knot-dns.cz\/2020-03-03-version-293.html\">objavljen<\/a><\/noindex> izdanje <noindex><a rel=\"nofollow\" href=\"https:\/\/www.knot-dns.cz\/\">KnotDNS 2.9.3<\/a><\/noindex>, visokoperformantnog autoritativnog DNS servera (rekursor je izveden kao zasebna aplikacija), koji podr\u017eava sve moderne DNS mogu\u0107nosti. Projekat razvija \u010de\u0161ka registracija imena CZ.NIC, napisan je na jeziku C i <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/CZ-NIC\/knot\">se distribuira<\/a><\/noindex> pod GPLv3 licencom. <\/p>\n<p>KnotDNS se odlikuje fokusom na visoku performansu obrade zahteva, za \u0161ta se koristi vi\u0161edretvena, i prete\u017eno neblokiraju\u0107a realizacija, dobro skalabilna na SMP sistemima. Pru\u017eaju se mogu\u0107nosti kao \u0161to su dodavanje i uklanjanje zona u letu, prenosi zona izme\u0111u servera, DDNS (dinami\u010dka a\u017euriranja), NSID (RFC 5001), pro\u0161irenja EDNS0 i DNSSEC (uklju\u010duju\u0107i NSEC3), ograni\u010denja intenziteta odgovora (RRL). <\/p>\n<p>U novom izdanju:<\/p>\n<ul>\n<li class=\"l\"> Dodana je nastavitve &#8216;remote.block-notify-after-transfer&#8217; za onemogo\u010danje po\u0161iljanja obvestil NOTIFY;\n<li class=\"l\"> Implementirana je eksperimentalna podr\u0161ka za algoritam Ed448 u DNSSE (zahteva GnuTLS 3.6.12+ i jo\u0161 nea\u017eurirani <noindex><a rel=\"nofollow\" href=\"https:\/\/www.lysator.liu.se\/~nisse\/nettle\/\">Nettle 3.6+<\/a><\/noindex>);\n<li class=\"l\"> V keymgr je dodana parameter &#8216;local-serial&#8217; za pridobitev ali nastavitev v bazi KASP serijskega SOA-\u0161tevilke za podpisano domeno;\n<li class=\"l\"> U keymgr je dodata podr\u0161ka za uvoz klju\u010deva Ed25519 i Ed448 u formatu DNS servera BIND;\n<li class=\"l\"> Vrednost nastavitve &#8216;server.tcp-io-timeout&#8217; je privzeto pove\u010dana na 500 ms, medtem ko je &#8216;database.journal-db-max-size&#8217; zmanj\u0161ana na 512 MiB na 32-bitnih sistemih.\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Izvor: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=52488\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 \u043a\u044d\u0448\u0438\u0440\u0443\u044e\u0448\u0435\u0433\u043e DNS-\u0441\u0435\u0440\u0432\u0435\u0440\u0430 PowerDNS Recursor 4.3, \u043e\u0442\u0432\u0435\u0447\u0430\u044e\u0449\u0435\u0433\u043e \u0437\u0430 \u0440\u0435\u043a\u0443\u0440\u0441\u0438\u0432\u043d\u043e\u0435 \u043f\u0440\u0435\u043e\u0431\u0440\u0430\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0438\u043c\u0451\u043d. PowerDNS Recursor \u043f\u043e\u0441\u0442\u0440\u043e\u0435\u043d \u043d\u0430 \u043e\u0434\u043d\u043e\u0439 \u043a\u043e\u0434\u043e\u0432\u043e\u0439 \u0431\u0430\u0437\u0435 \u0441 PowerDNS Authoritative Server, \u043d\u043e \u0440\u0435\u043a\u0443\u0440\u0441\u0438\u0432\u043d\u044b\u0439 \u0438 \u0430\u0432\u0442\u043e\u0440\u0438\u0442\u0435\u0442\u043d\u044b\u0439 DNS-\u0441\u0435\u0440\u0432\u0435\u0440\u044b PowerDNS \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u044e\u0442\u0441\u044f \u0432 \u0440\u0430\u043c\u043a\u0430\u0445 \u0440\u0430\u0437\u043d\u044b\u0445 \u0446\u0438\u043a\u043b\u043e\u0432 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u0438 \u0432\u044b\u043f\u0443\u0441\u043a\u0430\u044e\u0442\u0441\u044f \u0432 \u0444\u043e\u0440\u043c\u0435 \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u044b\u0445 \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u043e\u0432. \u041a\u043e\u0434 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u0442\u0441\u044f \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 GPLv2. \u0421\u0435\u0440\u0432\u0435\u0440 \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430 \u0434\u043b\u044f \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e\u0433\u043e \u0441\u0431\u043e\u0440\u0430 \u0441\u0442\u0430\u0442\u0438\u0441\u0442\u0438\u043a\u0438, \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u0442 [&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-72951","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 \u043a\u044d\u0448\u0438\u0440\u0443\u044e\u0448\u0435\u0433\u043e DNS-\u0441\u0435\u0440\u0432\u0435\u0440\u0430\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/sl\/blog\/news\/reliz-powerdns-recursor-4-3-i-knotdns-2-9-3\" \/>\n\t\t<meta name=\"generator\" content=\"All in 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