Các bước thiết lập xác thực đa yếu tố cho SSH trên Ubuntu 16.04 (P2)

{"success":true,"head":"<title>Các bước thiết lập xác thực đa yếu tố cho SSH trên Ubuntu 16.04 (P2)</title>\n<meta name=\"description\" content=\"Tiếp tục phần 1, trong bài viết này, chúng tôi sẽ hướng dẫn các bạn một số mẹo nhỏ để thiết lập xác thực đa yếu tố cho SSH trên Ubuntu 16.04.\"/>\n<meta name=\"robots\" content=\"nofollow, noindex\"/>\n<meta property=\"og:locale\" content=\"en_US\" />\n<meta property=\"og:type\" content=\"article\" />\n<meta property=\"og:title\" content=\"Các bước thiết lập xác thực đa yếu tố cho SSH trên Ubuntu 16.04 (P2)\" />\n<meta property=\"og:description\" content=\"Tiếp tục phần 1, trong bài viết này, chúng tôi sẽ hướng dẫn các bạn một số mẹo nhỏ để thiết lập xác thực đa yếu tố cho SSH trên Ubuntu 16.04.\" />\n<meta property=\"og:url\" content=\"https://blog.cystack.org/vi/blog/2018/01/23/cac-buoc-thiet-lap-xac-thuc-da-yeu-cho-ssh-tren-ubuntu-16-04-p2/\" />\n<meta property=\"og:site_name\" content=\"CyStack Blog\" />\n<meta property=\"article:author\" 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