{"id":105093,"date":"2022-09-14T21:36:59","date_gmt":"2022-09-14T19:36:59","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-samba-4-17-0"},"modified":"2022-09-14T21:36:59","modified_gmt":"2022-09-14T19:36:59","slug":"vypusk-samba-4-17-0","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/news\/vypusk-samba-4-17-0","title":{"rendered":"Lan\u00e7amento do Samba 4.17.0","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Foi lan\u00e7ado o Samba 4.17.0, continuando o desenvolvimento da linha Samba 4 com a implementa\u00e7\u00e3o completa do controlador de dom\u00ednio e do servi\u00e7o Active Directory, compat\u00edvel com a implementa\u00e7\u00e3o do Windows 2008 e capaz de atender todas as vers\u00f5es de clientes Windows suportadas pela Microsoft, incluindo o Windows 11. O Samba 4 \u00e9 um produto de servidor multifuncional, que tamb\u00e9m fornece implementa\u00e7\u00e3o de servidor de arquivos, servi\u00e7o de impress\u00e3o e servidor de identifica\u00e7\u00e3o (winbind).      <\/p>\n<p>Mudan\u00e7as principais no Samba 4.17:  <\/p>\n<ul>\n<li class=\"l\"> Trabalhou-se na corre\u00e7\u00e3o de regress\u00f5es de desempenho em servidores SMB sobrecarregados, que surgiram devido \u00e0 adi\u00e7\u00e3o de prote\u00e7\u00e3o contra vulnerabilidades que manipulam links simb\u00f3licos. Entre as otimiza\u00e7\u00f5es realizadas, destaca-se a redu\u00e7\u00e3o das chamadas de sistema na verifica\u00e7\u00e3o de nomes de diret\u00f3rios e a n\u00e3o utiliza\u00e7\u00e3o de eventos de despertar ao lidar com opera\u00e7\u00f5es concorrentes que causam atrasos.\n<li class=\"l\"> Agora \u00e9 poss\u00edvel compilar o Samba sem suporte ao protocolo SMB1 no smbd. Para desabilitar o SMB1, o script de configura\u00e7\u00e3o implementou a op\u00e7\u00e3o &#171;&#8212;without-smb1-server&#187; (isso afeta apenas o smbd, enquanto o suporte ao SMB1 permanece nas bibliotecas cliente).\n<li class=\"l\"> Com a utiliza\u00e7\u00e3o do MIT Kerberos 1.20, foi implementada uma prote\u00e7\u00e3o contra o ataque &#171;Bronze Bit&#187; (CVE-2020-17049), por meio da transmiss\u00e3o de informa\u00e7\u00f5es adicionais entre os componentes KDC e KDB. No KDC padr\u00e3o baseado em Heimdal Kerberos, o problema foi resolvido em 2021.\n<li class=\"l\"> Ao compilar com o MIT Kerberos 1.20 no controlador <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/pt\/domain\/\"   title=\"de dom\u00ednio\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"4149\">de dom\u00ednio<\/a> Foi implementado suporte para as extens\u00f5es Kerberos S4U2Self e S4U2Proxy na base do Samba, al\u00e9m de uma nova possibilidade de delega\u00e7\u00e3o restrita baseada em recursos (RBCD, Resource Based Constrained Delegation). Para gerenciar o RBCD, foram adicionados os subcomandos &#8216;add-principal&#8217; e &#8216;del-principal&#8217; ao comando &#171;samba-tool delegation&#187;. No KDC padr\u00e3o baseado em Heimdal Kerberos, o modo RBCD ainda n\u00e3o \u00e9 suportado.\n<li class=\"l\"> No servi\u00e7o DNS incorporado, foi possibilitada a altera\u00e7\u00e3o da porta de rede que recebe as solicita\u00e7\u00f5es (por exemplo, para executar outro servidor DNS no mesmo sistema, redirecionando certas solicita\u00e7\u00f5es para o Samba).\n<li class=\"l\"> No componente CTDB, respons\u00e1vel pela opera\u00e7\u00e3o de configura\u00e7\u00f5es de cluster, foram reduzidos os requisitos sint\u00e1ticos para o arquivo ctdb.tunables. Ao compilar o Samba com as op\u00e7\u00f5es &#171;&#8212;with-cluster-support&#187; e &#171;&#8212;systemd-install-services&#187;, o servi\u00e7o systemd para o CTDB \u00e9 garantido. O script ctdbd_wrapper foi descontinuado \u2014 o processo ctdbd agora \u00e9 iniciado diretamente pelo servi\u00e7o systemd ou pelo script de inicializa\u00e7\u00e3o.\n<li class=\"l\"> Foi implementada a configura\u00e7\u00e3o &#8216;nt hash store = never&#8217;, que pro\u00edbe o armazenamento de hashes de senhas de usu\u00e1rios do Active Directory sem sal. Na pr\u00f3xima vers\u00e3o, a configura\u00e7\u00e3o &#8216;nt hash store&#8217; ser\u00e1 definida como &#171;auto&#187;, onde o modo &#171;never&#187; ser\u00e1 aplicado caso a configura\u00e7\u00e3o &#8216;ntlm auth = disabled&#8217; esteja ativada.\n<li class=\"l\"> Uma interface para acessar a API da biblioteca smbconf a partir de c\u00f3digo em Python foi proposta.\n<li class=\"l\"> No programa smbstatus, agora \u00e9 poss\u00edvel exibir informa\u00e7\u00f5es no formato JSON (ativado pela op\u00e7\u00e3o &#171;&#8212;json&#187;).\n<li class=\"l\"> No controlador de dom\u00ednio, foi implementado suporte ao grupo de seguran\u00e7a &#171;Usu\u00e1rios Protegidos&#187;, que surgiu no Windows Server 2012 R2 e pro\u00edbe o uso de tipos de criptografia inseguras (para os usu\u00e1rios do grupo, o suporte \u00e0 autentica\u00e7\u00e3o NTLM e os TGTs do Kerberos baseados em RC4, al\u00e9m da delega\u00e7\u00e3o restrita e irrestrita, s\u00e3o desativados).\n<li class=\"l\"> O suporte para armazenamento de senhas e o m\u00e9todo de autentica\u00e7\u00e3o baseado em LanMan foi descontinuado (a configura\u00e7\u00e3o &#171;lanman auth = yes&#187; agora n\u00e3o tem efeito).<br \/>\n<br \/>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=57782\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u0440\u0435\u043b\u0438\u0437 Samba 4.17.0, \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0438\u0432\u0448\u0438\u0439 \u0440\u0430\u0437\u0432\u0438\u0442\u0438\u0435 \u0432\u0435\u0442\u043a\u0438 Samba 4 \u0441 \u043f\u043e\u043b\u043d\u043e\u0446\u0435\u043d\u043d\u043e\u0439 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0435\u0439 \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u043b\u0435\u0440\u0430 \u0434\u043e\u043c\u0435\u043d\u0430 \u0438 \u0441\u0435\u0440\u0432\u0438\u0441\u0430 Active Directory, \u0441\u043e\u0432\u043c\u0435\u0441\u0442\u0438\u043c\u043e\u0433\u043e \u0441 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0435\u0439 Windows 2008 \u0438 \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0433\u043e \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u0442\u044c \u0432\u0441\u0435 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u043c\u044b\u0435 Microsoft \u0432\u0435\u0440\u0441\u0438\u0438 Windows-\u043a\u043b\u0438\u0435\u043d\u0442\u043e\u0432, \u0432 \u0442\u043e\u043c \u0447\u0438\u0441\u043b\u0435 Windows 11. Samba 4 \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u043c\u043d\u043e\u0433\u043e\u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u044b\u043c \u0441\u0435\u0440\u0432\u0435\u0440\u043d\u044b\u043c \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u043e\u043c, \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0438\u043c \u0442\u0430\u043a\u0436\u0435 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e \u0444\u0430\u0439\u043b\u043e\u0432\u043e\u0433\u043e \u0441\u0435\u0440\u0432\u0435\u0440\u0430, \u0441\u0435\u0440\u0432\u0438\u0441\u0430 \u043f\u0435\u0447\u0430\u0442\u0438 \u0438 \u0441\u0435\u0440\u0432\u0435\u0440\u0430 \u0438\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 (winbind). \u041a\u043b\u044e\u0447\u0435\u0432\u044b\u0435 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f [&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-105093","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u0440\u0435\u043b\u0438\u0437 Samba 4.17.0, \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0438\u0432\u0448\u0438\u0439 \u0440\u0430\u0437\u0432\u0438\u0442\u0438\u0435 \u0432\u0435\u0442\u043a\u0438 Samba 4 \u0441 \u043f\u043e\u043b\u043d\u043e\u0446\u0435\u043d\u043d\u043e\u0439 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0435\u0439 \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u043b\u0435\u0440\u0430 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