{"id":37675,"date":"2019-10-31T22:18:59","date_gmt":"2019-10-31T19:18:59","guid":{"rendered":"https:\/\/prohoster.info\/blog\/opublikovan-dhcp-server-kea-1-6-razvivaemyj-konsortsiumom-isc\/"},"modified":"2019-10-31T22:18:59","modified_gmt":"2019-10-31T19:18:59","slug":"opublikovan-dhcp-server-kea-1-6-razvivaemyj-konsortsiumom-isc","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/news\/opublikovan-dhcp-server-kea-1-6-razvivaemyj-konsortsiumom-isc","title":{"rendered":"Avaldatud DHCP-server Kea 1.6, mille arendamise eest vastutab ISC konsortsium","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>ISC konsortsium <noindex><a rel=\"nofollow\" href=\"https:\/\/www.isc.org\/blogs\/kea-1-6\/\">avalikustas<\/a><\/noindex> DHCP-serveri v\u00e4ljaanne <noindex><a rel=\"nofollow\" href=\"http:\/\/kea.isc.org\">Kea 1.6.0<\/a><\/noindex>, mis asendab klassikalist ISC DHCP. Projekti allalaetavad l\u00e4htekoodid <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/isc-projects\/kea\">levitatakse<\/a><\/noindex> on litsentsi all <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=32726\">Mozilla Public License (MPL) 2.0<\/a><\/noindex>, asemel, mida rakendati varasemalt ISC DHCP jaoks, kasutades ISC litsentsi. <\/p>\n<p>DHCP-server Kea p\u00f5hineb BIND 10 tehnoloogiatel ja <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=36235\">ehitatud<\/a><\/noindex> kasutades modulaarset arhitektuuri, mis jagab funktsionaalsuse erinevatesse t\u00f6\u00f6tlusprotsessidesse. Toode sisaldab t\u00e4ielikku serveri teostust, mis toetab DHCPv4 ja DHCPv6 protokolle ning suudab asendada ISC DHCP. Keas on sisseehitatud d\u00fcnaamilise DNS-i tsoonide uuendamise vahendid, toetatakse serverite avastamise, aadresside m\u00e4\u00e4ramise, uuendamise ja taask\u00fchendamise, teabe p\u00e4ringute teenindamise, aadresside reserveerimise ja PXE-k\u00e4ivitamise mehhanisme. DHCPv6 teostuses on t\u00e4iendavalt etten\u00e4htud prefiksite delegeerimise v\u00f5imalus. V\u00e4listesse rakendustesse suhtlemiseks on saadaval spetsiaalne API. Konfiguratsiooni on v\u00f5imalik uuendada reaalajas ilma serverit taask\u00e4ivitamata.<\/p>\n<p>Teave eraldatud aadresside ja klientide parameetrite kohta v\u00f5ib olla salvestatud erinevatesse salvestuskohtadesse \u2014 hetkel pakutakse tausts\u00fcsteeme andmete salvestamiseks CSV-failides, MySQL andmebaasis, Apache Cassandra's ja PostgreSQL'is. Hostide reserveerimise parameetreid saab m\u00e4\u00e4rata konfiguratsioonifailis JSON-formaadis v\u00f5i tabelina MySQL ja PostgreSQL's. Komplekti kuulub t\u00f6\u00f6riist perfdhcp DHCP-serveri j\u00f5udluse m\u00f5\u00f5tmiseks ja statistika kogumiseks m\u00f5eldud komponendid. Kea n\u00e4itab head j\u00f5udlust, n\u00e4iteks MySQL tausts\u00fcsteemi kasutamisel suudab server teha 1000 aadressi m\u00e4\u00e4ramist sekundis (umbes 4000 paketti sekundis), ja memfile tausts\u00fcsteemi kasutamisel ulatub j\u00f5udlus 7500 aadressi m\u00e4\u00e4ramiseni sekundis.<\/p>\n<p><center><noindex><a rel=\"nofollow\" href=\"http:\/\/bind10.isc.org\/raw-attachment\/wiki\/DesignDiagrams\/Overview-DHCP-2013-01-16.png\"><img decoding=\"async\" alt=\"Avaldatud DHCP-server Kea 1.6, mille arendamise eest vastutab ISC konsortsium \" src=\"\/wp-content\/uploads\/2019\/09\/506faa6784a89a80eb89611b1cc11a24.png\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/center><\/p>\n<p>Peamised <noindex><a rel=\"nofollow\" href=\"https:\/\/ftp.isc.org\/isc\/kea\/1.6.0\/Kea160ReleaseNotes.txt\">parandused<\/a><\/noindex> Kea 1.6:<\/p>\n<ul>\n<li class=\"l\"> Realiseeritud on konfiguratsiooni tagaplaneering (CB, Configuration Backend), mis v\u00f5imaldab keskselt hallata mitme DHCPv4 ja DHCPv6 serveri seadeid. Tagaplaneeringut saab kasutada enamikku Kea seadeid, sealhulgas globaalsete parameetrite, \u00fchiste v\u00f5rkude, alamv\u00f5rkude, valikute, basseinide ja valikute m\u00e4\u00e4ratluste salvestamiseks. K\u00f5iki neid seadeid ei salvestata enam kohaliku konfiguratsioonifailina, vaid neid saab n\u00fc\u00fcd hoida v\u00e4lises andmebaasis. Samuti on v\u00f5imalik m\u00e4\u00e4rata CB kaudu mitte k\u00f5iki, vaid ainult osa seadistustest, rakendades v\u00e4lise andmebaasi ja kohalike konfiguratsioonifailide parameetreid (n\u00e4iteks v\u00f5ivad kohalikes failides j\u00e4\u00e4da alles v\u00f5rguliideste seaded).\n<p>Konfiguratsiooni salvestamiseks toetatakse praegu ainult MySQL andmebaasi (aadresside omamise (leases) salvestamiseks v\u00f5ivad kasutada MySQL, PostgreSQL ja Cassandra, ning hostide reserveerimiseks MySQL ja PostgreSQL). Andmebaasi konfiguratsioon v\u00f5ib muutuda nii otse andmebaasiga suhtlemisel kui ka spetsiaalselt koostatud vahepealsete teekide kaudu, mis pakuvad t\u00fc\u00fcpilist k\u00e4su komplekti konfiguratsiooni haldamiseks, nagu parameetrite, sidumiste, DHCP valikute ja alamv\u00f5rkude lisamine ja eemaldamine;<\/p>\n<li class=\"l\"> On lisatud uus \"DROP\" t\u00f6\u00f6tlejate klass (k\u00f5ik DROP klassiga seotud paketid visatakse kohe k\u00f5rvale), mida saab kasutada soovimatu liikluse, n\u00e4iteks teatud t\u00fc\u00fcpi DHCP-s\u00f5numite, k\u00f5rvaleheiteks;\n<li class=\"l\"> Lisatud on uued parameetrid max-lease-time ja min-lease-time, mis v\u00f5imaldavad m\u00e4\u00e4rata aadressi sidumise kliendile (lease) eluea mitte kindla v\u00e4\u00e4rtusena, vaid lubatud vahemikuna;\n<li class=\"l\"> Parandatud on \u00fchilduvust seadmetega, mis ei j\u00e4rgi t\u00e4ielikult DHCP standardeid. Probleemide v\u00e4ltimiseks saadab Kea n\u00fc\u00fcd DHCPv4 s\u00f5numi t\u00fc\u00fcbi teabe optsioonide nimekirja k\u00f5ige alguses, k\u00e4sitleb erinevaid hostinimede vorme, tunneb \u00e4ra t\u00fchi hostinimi edastamise ja v\u00f5imaldab m\u00e4\u00e4rata suboptsioone koodidega 0 kuni 255;\n<li class=\"l\"> DDNS demoonile on lisatud eraldi juhtimisseade, mille kaudu saab otse edastada k\u00e4ske ja teha muudatusi konfiguratsioonis. Toetatakse j\u00e4rgmisi k\u00e4ske: build-report, config-get, config-reload, config-set, config-test, config-write, list-commands, shutdown ja version-get;\n<li class=\"l\"> K\u00e4ivitatud <noindex><a rel=\"nofollow\" href=\"https:\/\/www.openwall.com\/lists\/oss-security\/2019\/08\/29\/\">haavatavuse<\/a><\/noindex> (CVE-2019-6472, CVE-2019-6473, CVE-2019-6474), mis saab kasutada teenuse keelamiseks (DHCPv4 ja DHCPv6 serveri t\u00f6\u00f6tlemise krahhi kutsumiseks) eba\u00f5igete valikute ja v\u00e4\u00e4rtustega p\u00e4ringute saatmise kaudu. Probleem on k\u00f5ige ohtlikum. <noindex><a rel=\"nofollow\" href=\"https:\/\/kb.isc.org\/docs\/cve-2019-6474\">CVE-2019-6474<\/a><\/noindex>, mis, kui seda kasutatakse memfile'i sidumiste jaoks, toob kaasa serveri protsessi iseseisva taask\u00e4ivitamise v\u00f5imatuse, seet\u00f5ttu on t\u00f6\u00f6 taastamiseks vajalik administraatori k\u00e4sitsi sekkumine (sidumisbaasi puhastamine).\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=51393\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041a\u043e\u043d\u0441\u043e\u0440\u0446\u0438\u0443\u043c ISC \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b \u0440\u0435\u043b\u0438\u0437 DHCP-\u0441\u0435\u0440\u0432\u0435\u0440\u0430 Kea 1.6.0, \u0438\u0434\u0443\u0449\u0435\u0433\u043e \u043d\u0430 \u0441\u043c\u0435\u043d\u0443 \u043a\u043b\u0430\u0441\u0441\u0438\u0447\u0435\u0441\u043a\u043e\u043c\u0443 ISC DHCP. \u0418\u0441\u0445\u043e\u0434\u043d\u044b\u0435 \u0442\u0435\u043a\u0441\u0442\u044b \u043f\u0440\u043e\u0435\u043a\u0442\u0430 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u044e\u0442\u0441\u044f \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 Mozilla Public License (MPL) 2.0, \u0432\u043c\u0435\u0441\u0442\u043e \u0440\u0430\u043d\u0435\u0435 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u043e\u0439 \u0434\u043b\u044f ISC DHCP \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0438 ISC License. DHCP-\u0441\u0435\u0440\u0432\u0435\u0440 Kea \u043e\u0441\u043d\u043e\u0432\u0430\u043d \u043d\u0430 \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u044f\u0445 BIND 10 \u0438 \u043f\u043e\u0441\u0442\u0440\u043e\u0435\u043d \u0441 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435\u043c \u043c\u043e\u0434\u0443\u043b\u044c\u043d\u043e\u0439 \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u044b, \u043f\u043e\u0434\u0440\u0430\u0437\u0443\u043c\u0435\u0432\u0430\u044e\u0449\u0435\u0439 \u0440\u0430\u0437\u0431\u0438\u0435\u043d\u0438\u0435 \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u043e\u0441\u0442\u0438 \u043d\u0430 \u0440\u0430\u0437\u043d\u044b\u0435 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u044b-\u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438. \u041f\u0440\u043e\u0434\u0443\u043a\u0442 \u0432\u043a\u043b\u044e\u0447\u0430\u0435\u0442 \u0432 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":28274,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-37675","post","type-post","status-publish","format-standard","has-post-thumbnail","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=\"\u041a\u043e\u043d\u0441\u043e\u0440\u0446\u0438\u0443\u043c ISC \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b \u0440\u0435\u043b\u0438\u0437 DHCP-\u0441\u0435\u0440\u0432\u0435\u0440\u0430 Kea 1.6.0, \u0438\u0434\u0443\u0449\u0435\u0433\u043e.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" 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