Cách cài đặt tường lửa UFW trên Ubuntu 16.04 (P2)

{"success":true,"head":"<title>Cách cài đặt tường lửa UFW trên Ubuntu 16.04 (P2) - CyStack Blog</title>\n<meta name=\"description\" content=\"Trong bài trước, chúng tôi đã hướng dẫn bạn cách cài đặt tường lửa UFW trên Ubuntu 16.04 để bảo vệ máy chủ khỏi các cuộc tấn công không mong muốn. Ở bài viết này, chúng tôi sẽ đưa ra một vài hướng dẫn sử dụng UFW.\"/>\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=\"Cách cài đặt tường lửa UFW trên Ubuntu 16.04 (P2) - CyStack Blog\" />\n<meta property=\"og:description\" content=\"Trong bài trước, chúng tôi đã hướng dẫn bạn cách cài đặt tường lửa UFW trên Ubuntu 16.04 để bảo vệ máy chủ khỏi các cuộc tấn công không mong muốn. 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Ở bài viết này, chúng tôi sẽ đưa ra một vài hướng dẫn sử dụng UFW.\" />\n<meta name=\"twitter:image\" content=\"https://s.cystack.net/resource/home/content/03133810/Thumbnail-CyStack.png\" />\n<meta name=\"twitter:label1\" content=\"Written by\" />\n<meta name=\"twitter:data1\" content=\"Trung Nguyen\" />\n<meta name=\"twitter:label2\" content=\"Time to read\" />\n<meta name=\"twitter:data2\" content=\"7 minutes\" />\n<script type=\"application/ld+json\" class=\"rank-math-schema\">{\"@context\":\"https://schema.org\",\"@graph\":[{\"@type\":\"Organization\",\"@id\":\"https://blog.cystack.org/#organization\",\"name\":\"CyStack\",\"url\":\"https://blog.cystack.org\"},{\"@type\":\"WebSite\",\"@id\":\"https://blog.cystack.org/#website\",\"url\":\"https://blog.cystack.org\",\"name\":\"CyStack\",\"publisher\":{\"@id\":\"https://blog.cystack.org/#organization\"},\"inLanguage\":\"en-US\"},{\"@type\":\"ImageObject\",\"@id\":\"https://s.cystack.net/resource/home/content/03133810/Thumbnail-CyStack.png\",\"url\":\"https://s.cystack.net/resource/home/content/03133810/Thumbnail-CyStack.png\",\"width\":\"1920\",\"height\":\"1081\",\"inLanguage\":\"en-US\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https://blog.cystack.org/vi/blog/2018/01/25/cach-cai-dat-tuong-lua-voi-ufw-tren-ubuntu-16-04-p2/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":\"1\",\"item\":{\"@id\":\"https://blog.cystack.org\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"position\":\"2\",\"item\":{\"@id\":\"https://blog.cystack.org/vi/blog/2018/01/25/cach-cai-dat-tuong-lua-voi-ufw-tren-ubuntu-16-04-p2/\",\"name\":\"C\\u00e1ch c\\u00e0i \\u0111\\u1eb7t t\\u01b0\\u1eddng l\\u1eeda UFW tr\\u00ean Ubuntu 16.04 (P2)\"}}]},{\"@type\":\"WebPage\",\"@id\":\"https://blog.cystack.org/vi/blog/2018/01/25/cach-cai-dat-tuong-lua-voi-ufw-tren-ubuntu-16-04-p2/#webpage\",\"url\":\"https://blog.cystack.org/vi/blog/2018/01/25/cach-cai-dat-tuong-lua-voi-ufw-tren-ubuntu-16-04-p2/\",\"name\":\"C\\u00e1ch c\\u00e0i \\u0111\\u1eb7t t\\u01b0\\u1eddng l\\u1eeda UFW tr\\u00ean Ubuntu 16.04 (P2) - CyStack Blog\",\"datePublished\":\"2018-01-25T17:59:17+07:00\",\"dateModified\":\"2026-06-23T20:09:43+07:00\",\"isPartOf\":{\"@id\":\"https://blog.cystack.org/#website\"},\"primaryImageOfPage\":{\"@id\":\"https://s.cystack.net/resource/home/content/03133810/Thumbnail-CyStack.png\"},\"inLanguage\":\"en-US\",\"breadcrumb\":{\"@id\":\"https://blog.cystack.org/vi/blog/2018/01/25/cach-cai-dat-tuong-lua-voi-ufw-tren-ubuntu-16-04-p2/#breadcrumb\"}},{\"@type\":\"Person\",\"@id\":\"https://blog.cystack.org/author/trungnh/\",\"name\":\"Trung Nguyen\",\"url\":\"https://blog.cystack.org/author/trungnh/\",\"image\":{\"@type\":\"ImageObject\",\"@id\":\"https://secure.gravatar.com/avatar/5e1e19d9b81295eeafdbc4175f18cc5b99a688411b0b5a2189c63881dff568b1?s=96&amp;d=mm&amp;r=g\",\"url\":\"https://secure.gravatar.com/avatar/5e1e19d9b81295eeafdbc4175f18cc5b99a688411b0b5a2189c63881dff568b1?s=96&amp;d=mm&amp;r=g\",\"caption\":\"Trung Nguyen\",\"inLanguage\":\"en-US\"},\"sameAs\":[\"CEO@CyStack\"],\"worksFor\":{\"@id\":\"https://blog.cystack.org/#organization\"}},{\"@type\":\"BlogPosting\",\"headline\":\"C\\u00e1ch c\\u00e0i \\u0111\\u1eb7t t\\u01b0\\u1eddng l\\u1eeda UFW tr\\u00ean Ubuntu 16.04 (P2) - CyStack Blog\",\"keywords\":\"c\\u00e0i \\u0111\\u1eb7t t\\u01b0\\u1eddng l\\u1eeda UFW tr\\u00ean Ubuntu\",\"datePublished\":\"2018-01-25T17:59:17+07:00\",\"dateModified\":\"2026-06-23T20:09:43+07:00\",\"author\":{\"@id\":\"https://blog.cystack.org/author/trungnh/\",\"name\":\"Trung Nguyen\"},\"publisher\":{\"@id\":\"https://blog.cystack.org/#organization\"},\"description\":\"Trong b\\u00e0i tr\\u01b0\\u1edbc, ch\\u00fang t\\u00f4i \\u0111\\u00e3 h\\u01b0\\u1edbng d\\u1eabn b\\u1ea1n c\\u00e1ch c\\u00e0i \\u0111\\u1eb7t t\\u01b0\\u1eddng l\\u1eeda UFW tr\\u00ean Ubuntu 16.04 \\u0111\\u1ec3 b\\u1ea3o v\\u1ec7 m\\u00e1y ch\\u1ee7 kh\\u1ecfi c\\u00e1c cu\\u1ed9c t\\u1ea5n c\\u00f4ng kh\\u00f4ng mong mu\\u1ed1n. \\u1ede b\\u00e0i vi\\u1ebft n\\u00e0y, ch\\u00fang t\\u00f4i s\\u1ebd \\u0111\\u01b0a ra m\\u1ed9t v\\u00e0i h\\u01b0\\u1edbng d\\u1eabn s\\u1eed d\\u1ee5ng UFW.\",\"name\":\"C\\u00e1ch c\\u00e0i \\u0111\\u1eb7t t\\u01b0\\u1eddng l\\u1eeda UFW tr\\u00ean Ubuntu 16.04 (P2) - CyStack Blog\",\"@id\":\"https://blog.cystack.org/vi/blog/2018/01/25/cach-cai-dat-tuong-lua-voi-ufw-tren-ubuntu-16-04-p2/#richSnippet\",\"isPartOf\":{\"@id\":\"https://blog.cystack.org/vi/blog/2018/01/25/cach-cai-dat-tuong-lua-voi-ufw-tren-ubuntu-16-04-p2/#webpage\"},\"image\":{\"@id\":\"https://s.cystack.net/resource/home/content/03133810/Thumbnail-CyStack.png\"},\"inLanguage\":\"en-US\",\"mainEntityOfPage\":{\"@id\":\"https://blog.cystack.org/vi/blog/2018/01/25/cach-cai-dat-tuong-lua-voi-ufw-tren-ubuntu-16-04-p2/#webpage\"}}]}</script>\n"}