Iptables và Netfilter: Phân tích chuyên sâu về kiến trúc và nguyên lý

{"success":true,"head":"<title>Iptables và Netfilter: Phân tích chuyên sâu về kiến trúc và nguyên lý - CyStack Tutorial</title>\n<meta name=\"description\" content=\"Tìm hiểu Iptables và Netfilter trong Linux – bộ công cụ mạnh mẽ để quản lý firewall, lọc gói tin và bảo mật hệ thống. Hướng dẫn cơ bản kèm ví dụ chi tiết.\"/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-video-preview:-1, max-image-preview:large\"/>\n<link rel=\"canonical\" href=\"https://blog.cystack.org/tutorial/2025/09/14/tim-hieu-iptables-va-netfilter/\" />\n<meta property=\"og:locale\" content=\"en_US\" />\n<meta property=\"og:type\" content=\"article\" />\n<meta property=\"og:title\" content=\"Iptables và Netfilter: Phân tích chuyên sâu về kiến trúc và nguyên lý - CyStack Tutorial\" />\n<meta property=\"og:description\" content=\"Tìm hiểu Iptables và Netfilter trong Linux – bộ công cụ mạnh mẽ để quản lý firewall, lọc gói tin và bảo mật hệ thống. Hướng dẫn cơ bản kèm ví dụ chi tiết.\" />\n<meta property=\"og:url\" content=\"https://blog.cystack.org/tutorial/2025/09/14/tim-hieu-iptables-va-netfilter/\" />\n<meta property=\"og:site_name\" content=\"CyStack Tutorial\" />\n<meta property=\"article:tag\" content=\"vi\" />\n<meta property=\"article:section\" content=\"Firewall\" />\n<meta property=\"article:published_time\" content=\"2025-09-14T22:26:02+07:00\" />\n<meta name=\"twitter:card\" content=\"summary_large_image\" />\n<meta name=\"twitter:title\" content=\"Iptables và Netfilter: Phân tích chuyên sâu về kiến trúc và nguyên lý - CyStack Tutorial\" />\n<meta name=\"twitter:description\" content=\"Tìm hiểu Iptables và Netfilter trong Linux – bộ công cụ mạnh mẽ để quản lý firewall, lọc gói tin và bảo mật hệ thống. 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