{"id":32659,"date":"2019-10-31T21:48:15","date_gmt":"2019-10-31T18:48:15","guid":{"rendered":"https:\/\/prohoster.info\/blog\/hozhdenie-po-mukam-ili-shifrovanie-trafika-v-direct-connect-ch-3\/"},"modified":"2019-10-31T21:48:15","modified_gmt":"2019-10-31T18:48:15","slug":"hozhdenie-po-mukam-ili-shifrovanie-trafika-v-direct-connect-ch-3","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/administrirovanie\/hozhdenie-po-mukam-ili-shifrovanie-trafika-v-direct-connect-ch-3","title":{"rendered":"Caminhando pelas dificuldades ou Criptografia de tr\u00e1fego no Direct Connect, parte 3","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

E ningu\u00e9m coloca vinho novo em odres velhos; caso contr\u00e1rio, o vinho novo romper\u00e1 os odres, e ele mesmo se derramar\u00e1, e os odres se perder\u00e3o; mas o vinho novo deve ser colocado em odres novos; assim, tanto um quanto o outro ser\u00e3o preservados.<\/i> Lc. 5:37,38<\/p>\n

Em abril deste ano, a administra\u00e7\u00e3o do maior hub de DC do mundo anunciou o in\u00edcio do suporte a conex\u00f5es seguras. Vamos ver o que saiu disso.<\/a><\/noindex><\/p>\n

Translate to English<\/a><\/noindex><\/p>\n

Liberdade de consci\u00eancia<\/b><\/p>\n

Uma vez que tudo o que eu pensava sobre isso j\u00e1 foi dito anteriormente<\/a><\/noindex>, esta parte do artigo n\u00e3o deveria estar aqui.<\/p>\n

Se precisar de seguran\u00e7a, escolha um cliente moderno e hub ADC<\/a><\/noindex>. Ponto.<\/p><\/blockquote>\n

Mas e se, afinal, usarmos um hub NMDC, ou seja, comum<\/i>? \u0412 \u044d\u0442\u043e\u043c \u0441\u043b\u0443\u0447\u0430\u0435 \u043f\u0440\u0438\u0434\u0451\u0442\u0441\u044f \u0441\u0442\u043e\u043b\u043a\u043d\u0443\u0442\u044c\u0441\u044f \u0441 \u043d\u0435\u0441\u043e\u0432\u043c\u0435\u0441\u0442\u0438\u043c\u043e\u0441\u0442\u044c\u044e \u0441\u0442\u0430\u0440\u044b\u0445, \u043e\u0447\u0435\u043d\u044c \u0441\u0442\u0430\u0440\u044b\u0445, \u043d\u043e\u0432\u044b\u0445 \u0438\u043b\u0438 \u043f\u0440\u043e\u0441\u0442\u043e \u043d\u0435\u043d\u0430\u0441\u0442\u0440\u043e\u0435\u043d\u043d\u044b\u0445 DC \u043a\u043b\u0438\u0435\u043d\u0442\u043e\u0432. \u041d\u043e \u2013 \u044d\u0442\u043e \u0431\u044b\u043b\u043e \u0441\u0434\u0435\u043b\u0430\u043d\u043e, \u0438 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u044b \u043d\u0435 \u0437\u0430\u0441\u0442\u0430\u0432\u0438\u043b\u0438 \u0441\u0435\u0431\u044f \u0436\u0434\u0430\u0442\u044c.<\/p>\n

M\u00e1fia<\/b><\/p>\n

Primeiro, conex\u00f5es seguras \"cliente-cliente\" s\u00e3o estabelecidas independentemente da presen\u00e7a de criptografia \"cliente-hub\".<\/p>\n

Em segundo lugar, n\u00e3o \u00e9 poss\u00edvel identificar visualmente um hub que transmita ou n\u00e3o transmita solicita\u00e7\u00f5es para conex\u00f5es seguras.<\/p>\n

Em terceiro lugar, at\u00e9 hoje, praticamente todos os clientes de DC t\u00eam a criptografia das conex\u00f5es ativada por padr\u00e3o.<\/p>\n

Lembrou? Agora vamos checar<\/a><\/noindex> as configura\u00e7\u00f5es de TLS do lado do usu\u00e1rio, conectar-se ao hub e tentar conectar os clientes uns aos outros com cuidado.<\/p>\n

hub NMDC<\/b><\/p>\n

\"Caminhando
\n
\nDC++ categoricamente rejeita conex\u00f5es seguras em hubs NMDC, no entanto, aprova plenamente as comuns. A raz\u00e3o foi mencionada pelos desenvolvedores v\u00e1rias vezes \u2013 n\u00e3o vale a pena andar por velhos caminhos!<\/p>\n

StrongDC++ suporta apenas TLS v.1.0, e clientes modernos n\u00e3o se conectam a ele de forma alguma. Com GreylinkDC++ \u00e9 ainda pior.<\/p>\n

FlylinkDC++ se adapta facilmente ao modo de compatibilidade com clientes antigos. Mas por quanto tempo isso vai durar e \u00e9 realmente necess\u00e1rio?..<\/p>\n

EiskaltDC++ faz o mesmo, mas de forma menos disposta, apenas para suas necessidades.<\/p>\n

hub(s) ADC<\/b><\/p>\n

\"Caminhando
\n
\n\u00c9 exatamente a mesma coisa, mas o DC++ se envolve ativamente.<\/p>\n

EiskaltDC++, aparentemente, n\u00e3o faz distin\u00e7\u00e3o entre hubs NMDC e ADC, sendo rigoroso com ambos.<\/p>\n

E se filtrarmos clientes desatualizados, estabelecendo como requisito de entrada o suporte a TLS v.1.2?..<\/p>\n

hub(s) ADC<\/b><\/p>\n

\"Caminhando
\n
\nMagn\u00edfico, n\u00e3o \u00e9 mesmo?<\/p>\n

Como resultado, obtemos um servi\u00e7o de \"monitoramento como servi\u00e7o\", automatizado na linha de produ\u00e7\u00e3o de integra\u00e7\u00e3o cont\u00ednua. O desenvolvedor ou testador precisa apenas definir a lista de m\u00e9tricas em um arquivo JSON, e tudo o mais acontece automaticamente. Obtemos um controle de qualidade transparente dos lan\u00e7amentos: todas as notifica\u00e7\u00f5es sobre desempenho, consumo de recursos ou regress\u00f5es arquitet\u00f4nicas.<\/b><\/p>\n

Pode parecer ao leitor que o melhor \u00e9 usar FlylinkDC++ e n\u00e3o ter problemas, no entanto, voc\u00ea se esquece que esse cliente \u00e9 problem\u00e1tico<\/a><\/noindex> por si s\u00f3. Um dos \u00faltimos incidentes conhecidos que tive com ele foi a falta das marca\u00e7\u00f5es de suporte a conex\u00f5es seguras pelo config remoto para muitos usu\u00e1rios e a aus\u00eancia real dessas op\u00e7\u00f5es em todas as suas vers\u00f5es anteriores.<\/p>\n

Assim, devido a v\u00e1rias raz\u00f5es hist\u00f3ricas e pol\u00edticas, o uso de hubs NMDC como base para conex\u00f5es seguras entre clientes \u00e9 dificultado ou mesmo imposs\u00edvel. Ao usar um hub NMDC, voc\u00ea perde garantidamente a capacidade de se conectar com parte dos usu\u00e1rios, em troca de seguran\u00e7a \u2013 mas sem garantias.<\/p>\n

Recomenda\u00e7\u00f5es<\/b><\/p>\n

Comece a usar hubs ADC, mesmo que de forma provis\u00f3ria. Desista de clientes obsoletos e, se voc\u00ea \u00e9 o administrador do hub DC, pro\u00edba Strong e Gray em seu servidor. Pois<\/p>\n

Todo reino dividido em si mesmo ser\u00e1 desolado; e toda cidade ou casa dividida em si mesma n\u00e3o subsistir\u00e1.<\/i> Mateus 12:25
\n
Fonte: habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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