{"id":103194,"date":"2022-02-05T15:36:52","date_gmt":"2022-02-05T13:36:55","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/reliz-os-qubes-4-1-ispolzuyushhej-virtualizacziyu-dlya-izolyaczii-prilozhenij"},"modified":"2022-02-05T15:36:52","modified_gmt":"2022-02-05T13:36:55","slug":"reliz-os-qubes-4-1-ispolzuyushhej-virtualizacziyu-dlya-izolyaczii-prilozhenij","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/news\/reliz-os-qubes-4-1-ispolzuyushhej-virtualizacziyu-dlya-izolyaczii-prilozhenij","title":{"rendered":"Lan\u00e7amento do sistema operacional Qubes 4.1, que utiliza virtualiza\u00e7\u00e3o para isolar aplicativos.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Ap\u00f3s quase quatro anos de desenvolvimento, foi lan\u00e7ado o sistema operacional Qubes 4.1, que implementa a ideia de usar um hipervisor para o estrito isolamento de aplicativos e componentes do sistema operacional (cada classe de aplicativos e servi\u00e7os do sistema opera em m\u00e1quinas virtuais separadas). Para funcionar, \u00e9 necess\u00e1rio um sistema com 6 GB de RAM e um CPU Intel ou AMD de 64 bits com suporte para tecnologias VT-x com EPT\/AMD-v com RVI e VT-d\/AMD IOMMU, sendo desej\u00e1vel a presen\u00e7a de uma GPU Intel (as GPUs da NVIDIA e AMD n\u00e3o foram suficientemente testadas). O tamanho da imagem de instala\u00e7\u00e3o \u00e9 de 6 GB.        <\/p>\n<p>Os aplicativos no Qubes s\u00e3o divididos em classes com base na import\u00e2ncia dos dados processados e nas tarefas a serem resolvidas. Cada classe de aplicativos (por exemplo, trabalho, entretenimento, opera\u00e7\u00f5es banc\u00e1rias), assim como os servi\u00e7os do sistema (sub-sistema de rede, firewall, armazenamento, pilha USB, etc.), funcionam em m\u00e1quinas virtuais separadas, iniciadas usando o hipervisor Xen. Esses aplicativos est\u00e3o acess\u00edveis dentro de uma mesma \u00e1rea de trabalho e s\u00e3o destacados para maior visibilidade por meio de diferentes cores de contorno da janela. Cada ambiente tem acesso de leitura ao sistema de arquivos raiz b\u00e1sico e ao armazenamento local, que n\u00e3o se sobrep\u00f5e aos armazenamentos de outros ambientes; um servi\u00e7o especial \u00e9 usado para organizar a intera\u00e7\u00e3o entre aplicativos.   <center><img decoding=\"async\" alt=\"Lan\u00e7amento do sistema operacional Qubes 4.1, que utiliza virtualiza\u00e7\u00e3o para isolar aplicativos.\" src=\"\/wp-content\/uploads\/2022\/02\/14cb7933489192c6d652e485c441b1ad.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/center>  <\/p>\n<p>Como base para a forma\u00e7\u00e3o de ambientes virtuais, pode-se utilizar reposit\u00f3rios de pacotes do Fedora e Debian, al\u00e9m de que a comunidade d\u00e1 suporte a templates para Ubuntu, Gentoo e Arch Linux. \u00c9 poss\u00edvel organizar o acesso a aplicativos em uma m\u00e1quina virtual com Windows, assim como criar <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/pt\/vps\/\"   title=\"m\u00e1quinas virtuais\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2089\">m\u00e1quinas virtuais<\/a> com base no Whonix para garantir acesso an\u00f4nimo atrav\u00e9s do Tor. A interface do usu\u00e1rio \u00e9 constru\u00edda sobre o Xfce. Quando o usu\u00e1rio inicia um aplicativo atrav\u00e9s do menu, esse aplicativo \u00e9 iniciado em uma m\u00e1quina virtual espec\u00edfica. O conte\u00fado dos ambientes virtuais \u00e9 definido por um conjunto de templates.     <center><img decoding=\"async\" alt=\"Lan\u00e7amento do sistema operacional Qubes 4.1, que utiliza virtualiza\u00e7\u00e3o para isolar aplicativos.\" src=\"\/wp-content\/uploads\/2022\/02\/d1d2d570180a1c29653bad0e795d226c.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/center>  <center><img decoding=\"async\" alt=\"Lan\u00e7amento do sistema operacional Qubes 4.1, que utiliza virtualiza\u00e7\u00e3o para isolar aplicativos.\" src=\"\/wp-content\/uploads\/2022\/02\/7512630ac4acb9d7f249d4cedb82b748.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/center>    <\/p>\n<p>Principais mudan\u00e7as:  <\/p>\n<ul>\n<li class=\"l\"> Foi implementada a possibilidade de aplicar um ambiente separado GUI Domain com componentes para garantir o funcionamento da interface gr\u00e1fica. Anteriormente, em ambientes virtuais, um servidor X separado era iniciado para cada classe de aplicativos, um gerenciador de janelas simplificado e um driver de v\u00eddeo stub, que transmitia a sa\u00edda para o ambiente de controle em modo composto, mas os componentes da pilha gr\u00e1fica, o gerenciador de janelas da \u00e1rea de trabalho principal, os controles de tela e os drivers gr\u00e1ficos eram executados no ambiente de controle principal Dom0. Agora, as fun\u00e7\u00f5es relacionadas \u00e0 gr\u00e1fica podem ser transferidas do Dom0 para um ambiente separado GUI Domain, separando-as dos componentes de gerenciamento do sistema. No Dom0, apenas um processo em segundo plano especial foi mantido para fornecer acesso a determinadas p\u00e1ginas de mem\u00f3ria. O suporte a GUI Domain ainda \u00e9 experimental e n\u00e3o est\u00e1 ativado por padr\u00e3o.\n<li class=\"l\"> Foi adicionada a suporte experimental para Audio Domain, um ambiente separado para a execu\u00e7\u00e3o de som, <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/pt\/server\/dts-los-angeles\/\"   title=\"servidor\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3791\">servidor<\/a>, permitindo a separa\u00e7\u00e3o dos componentes de processamento de \u00e1udio do Dom0.\n<li class=\"l\"> Foi adicionado um processo em segundo plano qrexec-policy e um novo sistema de regras para o mecanismo RPC Qrexec, que permite executar comandos no contexto de ambientes virtuais espec\u00edficos. O sistema de regras Qrexec determina quem, o que e onde pode fazer algo no Qubes. A nova vers\u00e3o das regras possui um formato mais flex\u00edvel, um aumento significativo no desempenho e um sistema de notifica\u00e7\u00f5es que simplifica o diagn\u00f3stico de problemas. Foi adicionada a capacidade de executar servi\u00e7os Qrexec na forma de um servidor, acess\u00edvel atrav\u00e9s de um socket.\n<li class=\"l\"> Foram propostos tr\u00eas novos templates de ambientes virtuais baseados em Gentoo Linux - m\u00ednimo, com Xfce e com GNOME.\n<li class=\"l\"> Foi implementada uma nova infraestrutura para acompanhamento, montagem automatizada e teste de templates adicionais de ambientes virtuais. Al\u00e9m do Gentoo, a infraestrutura agora suporta templates com Arch Linux e testes do n\u00facleo Linux.\n<li class=\"l\"> O sistema de montagem e teste foi aprimorado, adicionando suporte para verifica\u00e7\u00e3o no sistema de integra\u00e7\u00e3o cont\u00ednua baseado no GitLab CI.\n<li class=\"l\"> Foi realizado o trabalho para implementar suporte a montagens repet\u00edveis de ambientes baseados no Debian, que podem ser utilizados para confirmar que os componentes do Qubes foram montados exatamente a partir das fontes declaradas e n\u00e3o cont\u00eam altera\u00e7\u00f5es externas, cuja inser\u00e7\u00e3o, por exemplo, poderia ser executada por meio de um ataque \u00e0 infraestrutura de montagem ou backdoor no compilador.\n<li class=\"l\"> A implementa\u00e7\u00e3o do firewall foi reescrita.    <center><img decoding=\"async\" alt=\"Lan\u00e7amento do sistema operacional Qubes 4.1, que utiliza virtualiza\u00e7\u00e3o para isolar aplicativos.\" src=\"\/wp-content\/uploads\/2022\/02\/8c08509ca530f20cad5d8eb846850d86.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/center>\n<li class=\"l\">  Os ambientes sys-firewall e sys-usb agora s\u00e3o iniciados por padr\u00e3o no modo 'disposable', ou seja, s\u00e3o descart\u00e1veis e podem ser criados sob demanda.\n<li class=\"l\"> Apoio melhorado para telas com alta densidade de pixels.\n<li class=\"l\"> Adicionada suporte para diferentes formas de cursor.\n<li class=\"l\"> Implementa\u00e7\u00e3o de notifica\u00e7\u00e3o sobre falta de espa\u00e7o livre em disco.\n<li class=\"l\"> Adicionada suporte para um modo paranoico de recupera\u00e7\u00e3o de backup, onde um ambiente virtual descart\u00e1vel \u00e9 utilizado para a restaura\u00e7\u00e3o.\n<li class=\"l\"> No instalador, foi fornecida a op\u00e7\u00e3o de escolher entre Debian e Fedora para templates de m\u00e1quinas virtuais.\n<li class=\"l\"> Uma nova interface gr\u00e1fica para gerenciar atualiza\u00e7\u00f5es foi adicionada.  <center><img decoding=\"async\" alt=\"Lan\u00e7amento do sistema operacional Qubes 4.1, que utiliza virtualiza\u00e7\u00e3o para isolar aplicativos.\" src=\"\/wp-content\/uploads\/2022\/02\/3a6c39d150b0c18eef06f377e25ca95f.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/center>\n<li class=\"l\"> Adicionada uma ferramenta Template Manager para instala\u00e7\u00e3o, remo\u00e7\u00e3o e atualiza\u00e7\u00e3o de templates.\n<li class=\"l\"> O mecanismo de dissemina\u00e7\u00e3o de templates foi aprimorado.\n<li class=\"l\"> O ambiente base Dom0 foi atualizado para a base de pacotes do Fedora 32. Os templates para a forma\u00e7\u00e3o de ambientes virtuais foram atualizados para Fedora 34, Debian 11 e Whonix 16. O n\u00facleo Linux 5.10 est\u00e1 agora sugerido por padr\u00e3o. O hypervisor Xen 4.14 e o ambiente gr\u00e1fico Xfce 4.14 foram atualizados.    <\/ul>\n<p>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=56641\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0441\u043b\u0435 \u043f\u043e\u0447\u0442\u0438 \u0447\u0435\u0442\u044b\u0440\u0451\u0445 \u043b\u0435\u0442 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u0441\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b Qubes 4.1, \u0440\u0435\u0430\u043b\u0438\u0437\u0443\u044e\u0449\u0435\u0439 \u0438\u0434\u0435\u044e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u0433\u0438\u043f\u0435\u0440\u0432\u0438\u0437\u043e\u0440\u0430 \u0434\u043b\u044f \u0441\u0442\u0440\u043e\u0433\u043e\u0439 \u0438\u0437\u043e\u043b\u044f\u0446\u0438\u0438 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439 \u0438 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u043e\u0432 \u041e\u0421 (\u043a\u0430\u0436\u0434\u044b\u0439 \u043a\u043b\u0430\u0441\u0441 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439 \u0438 \u0441\u0438\u0441\u0442\u0435\u043c\u043d\u044b\u0435 \u0441\u0435\u0440\u0432\u0438\u0441\u044b \u0440\u0430\u0431\u043e\u0442\u0430\u044e\u0442 \u0432 \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u044b\u0445 \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u044c\u043d\u044b\u0445 \u043c\u0430\u0448\u0438\u043d\u0430\u0445). \u0414\u043b\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u0430 \u0441\u0438\u0441\u0442\u0435\u043c\u0430 \u0441 6 \u0413\u0431 \u041e\u0417\u0423 \u0438 64-\u0440\u0430\u0437\u0440\u044f\u0434\u043d\u044b\u043c CPU Intel \u0438\u043b\u0438 AMD \u0441 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u043e\u0439 \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u0439 VT-x c EPT\/AMD-v c RVI [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":103195,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-103194","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u043e\u0441\u043b\u0435 \u043f\u043e\u0447\u0442\u0438 \u0447\u0435\u0442\u044b\u0440\u0451\u0445 \u043b\u0435\u0442 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u0441\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 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