{"id":21990,"date":"2025-04-18T09:19:38","date_gmt":"2025-04-18T09:19:38","guid":{"rendered":"https:\/\/vacif.com\/?p=21990"},"modified":"2025-08-08T15:38:03","modified_gmt":"2025-08-08T08:38:03","slug":"huong-dan-cau-hinh-zero-day-protection-tren-sophos-xgs","status":"publish","type":"post","link":"https:\/\/vacif.com\/en\/huong-dan-cau-hinh-zero-day-protection-tren-sophos-xgs\/","title":{"rendered":"H\u01b0\u1edbng D\u1eabn C\u1ea5u H\u00ecnh Zero-day Protection Tr\u00ean Sophos XGS"},"content":{"rendered":"\n<div class=\"wp-block-essential-blocks-advanced-heading  root-eb-advance-heading-373ji\"><div class=\"eb-parent-wrapper eb-parent-eb-advance-heading-373ji \"><div class=\"eb-advance-heading-wrapper eb-advance-heading-373ji button-1 undefined\" data-id=\"eb-advance-heading-373ji\"><h2 class=\"eb-ah-title\"><span class=\"first-title\">I &#8211; T\u1ed5ng quan<\/span><\/h2><\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-essential-blocks-advanced-heading  root-eb-advance-heading-ua8wd\"><div class=\"eb-parent-wrapper eb-parent-eb-advance-heading-ua8wd \"><div class=\"eb-advance-heading-wrapper eb-advance-heading-ua8wd button-1 undefined\" data-id=\"eb-advance-heading-ua8wd\"><h2 class=\"eb-ah-title\"><span class=\"first-title\">1.1 &#8211; Zero-day l\u00e0 g\u00ec?<\/span><\/h2><\/div><\/div><\/div>\n\n\n\n<p>Zero-day l\u00e0 nh\u1eefng l\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt ch\u01b0a \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n ho\u1eb7c ch\u01b0a c\u00f3 b\u1ea3n v\u00e1 t\u1eeb nh\u00e0 cung c\u1ea5p. Tin t\u1eb7c c\u00f3 th\u1ec3 khai th\u00e1c nh\u1eefng l\u1ed7 h\u1ed5ng n\u00e0y \u0111\u1ec3 t\u1ea5n c\u00f4ng h\u1ec7 th\u1ed1ng tr\u01b0\u1edbc khi c\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt k\u1ecbp th\u1eddi ng\u0103n ch\u1eb7n.<\/p>\n\n\n\n<div class=\"wp-block-essential-blocks-advanced-heading  root-eb-advance-heading-mav3l\"><div class=\"eb-parent-wrapper eb-parent-eb-advance-heading-mav3l \"><div class=\"eb-advance-heading-wrapper eb-advance-heading-mav3l button-1 undefined\" data-id=\"eb-advance-heading-mav3l\"><h2 class=\"eb-ah-title\"><span class=\"first-title\">1.2 &#8211; <strong>C\u00e1ch Sophos b\u1ea3o v\u1ec7 tr\u01b0\u1edbc c\u00e1c m\u1ed1i \u0111e d\u1ecda Zero-day<\/strong><\/span><\/h2><\/div><\/div><\/div>\n\n\n\n<p>Sophos s\u1eed d\u1ee5ng nhi\u1ec1u c\u00f4ng ngh\u1ec7 ti\u00ean ti\u1ebfn \u0111\u1ec3 nh\u1eadn di\u1ec7n v\u00e0 ng\u0103n ch\u1eb7n t\u1ea5n c\u00f4ng zero-day, bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Deep Learning AI:<\/strong> Sophos Intercept X t\u00edch h\u1ee3p c\u00f4ng ngh\u1ec7 tr\u00ed tu\u1ec7 nh\u00e2n t\u1ea1o (AI) \u0111\u1ec3 ph\u00e2n t\u00edch h\u00e0nh vi c\u1ee7a t\u1ec7p tin, t\u1eeb \u0111\u00f3 ph\u00e1t hi\u1ec7n c\u00e1c m\u1ed1i \u0111e d\u1ecda ch\u01b0a t\u1eebng \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn tr\u01b0\u1edbc \u0111\u00f3. H\u1ec7 th\u1ed1ng n\u00e0y kh\u00f4ng d\u1ef1a v\u00e0o ch\u1eef k\u00fd (signature-less detection), gi\u00fap b\u1ea3o v\u1ec7 hi\u1ec7u qu\u1ea3 tr\u01b0\u1edbc c\u1ea3 c\u00e1c lo\u1ea1i malware m\u1edbi.<\/li>\n\n\n\n<li><strong>Exploit Prevention:<\/strong> Ng\u0103n ch\u1eb7n c\u00e1c k\u1ef9 thu\u1eadt khai th\u00e1c l\u1ed7 h\u1ed5ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c tin t\u1eb7c s\u1eed d\u1ee5ng, ch\u1eb3ng h\u1ea1n nh\u01b0 Code Injection, ROP Exploit v\u00e0 API Hijacking.<\/li>\n\n\n\n<li><strong>Ph\u00e2n t\u00edch h\u00e0nh vi (Behavioral Analysis):<\/strong> Sophos gi\u00e1m s\u00e1t qu\u00e1 tr\u00ecnh th\u1ef1c thi c\u1ee7a \u1ee9ng d\u1ee5ng, n\u1ebfu ph\u00e1t hi\u1ec7n h\u00e0nh vi b\u1ea5t th\u01b0\u1eddng nh\u01b0 ghi m\u00e3 \u0111\u1ed9c v\u00e0o b\u1ed9 nh\u1edb ho\u1eb7c th\u1ef1c thi script nguy hi\u1ec3m, h\u1ec7 th\u1ed1ng s\u1ebd t\u1ef1 \u0111\u1ed9ng c\u00e1ch ly \u0111\u1ec3 ng\u0103n ch\u1eb7n k\u1ecbp th\u1eddi.<\/li>\n\n\n\n<li><strong>Ki\u1ec3m tra g\u00f3i d\u1eef li\u1ec7u s\u00e2u (DPI) &amp; Sandboxing: <\/strong>Sophos Firewall v\u00e0 Intercept X s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 Deep Packet Inspection (DPI) \u0111\u1ec3 ph\u00e2n t\u00edch l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng theo th\u1eddi gian th\u1ef1c. N\u1ebfu ph\u00e1t hi\u1ec7n t\u1ec7p \u0111\u00e1ng ng\u1edd, h\u1ec7 th\u1ed1ng s\u1ebd g\u1eedi l\u00ean Cloud Sandbox \u0111\u1ec3 ph\u00e2n t\u00edch k\u1ef9 h\u01a1n v\u00e0 x\u00e1c \u0111\u1ecbnh nguy c\u01a1 nhi\u1ec5m m\u00e3 \u0111\u1ed9c.<\/li>\n\n\n\n<li><strong>B\u1ea3o m\u1eadt \u0111\u1ed3ng b\u1ed9 (Synchronized Security): <\/strong>Sophos Intercept X (Endpoint) v\u00e0 Sophos Firewall (XGS) c\u00f3 th\u1ec3 chia s\u1ebb d\u1eef li\u1ec7u v\u1ec1 m\u1ed1i \u0111e d\u1ecda v\u1edbi nhau, gi\u00fap ph\u00e1t hi\u1ec7n v\u00e0 ph\u1ea3n \u1ee9ng nhanh h\u01a1n khi c\u00f3 d\u1ea5u hi\u1ec7u t\u1ea5n c\u00f4ng zero-day.<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"wp-block-essential-blocks-advanced-heading  root-eb-advance-heading-7w8ur\"><div class=\"eb-parent-wrapper eb-parent-eb-advance-heading-7w8ur \"><div class=\"eb-advance-heading-wrapper eb-advance-heading-7w8ur button-1 undefined\" data-id=\"eb-advance-heading-7w8ur\"><h2 class=\"eb-ah-title\"><span class=\"first-title\">1.3 &#8211; T\u00ecnh hu\u1ed1ng c\u1ea5u h\u00ecnh<\/span><\/h2><\/div><\/div><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>T\u00ecnh hu\u1ed1ng: <\/strong>M\u00e1y t\u00ednh trong m\u1ea1ng LAN t\u1ea3i file ch\u1ee9a virus v\u00e0 b\u1ecb Sophos Firewall ch\u1eb7n<\/li>\n\n\n\n<li>M\u1ed9t m\u00e1y t\u00ednh trong m\u1ea1ng LAN c\u1ed1 g\u1eafng t\u1ea3i v\u1ec1 m\u1ed9t t\u1ec7p tin t\u1eeb Internet, nh\u01b0ng t\u1ec7p n\u00e0y c\u00f3 ch\u1ee9a virus. Sophos Firewall ph\u00e1t hi\u1ec7n m\u1ed1i \u0111e d\u1ecda v\u00e0 ngay l\u1eadp t\u1ee9c ng\u0103n ch\u1eb7n qu\u00e1 tr\u00ecnh t\u1ea3i xu\u1ed1ng, ng\u0103n ch\u1eb7n virus x\u00e2m nh\u1eadp v\u00e0o h\u1ec7 th\u1ed1ng.<\/li>\n\n\n\n<li>S\u01a1 \u0111\u1ed3 t\u00ecnh hu\u1ed1ng c\u1ea5u h\u00ecnh:<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"975\" height=\"651\" src=\"https:\/\/vacif.com\/wp-content\/uploads\/sites\/3\/2025\/04\/image-2.png\" alt=\"\" class=\"wp-image-21996\" srcset=\"https:\/\/vacif.com\/en\/wp-content\/uploads\/sites\/3\/2025\/04\/image-2.png 975w, https:\/\/vacif.com\/en\/wp-content\/uploads\/sites\/3\/2025\/04\/image-2-600x401.png 600w, https:\/\/vacif.com\/en\/wp-content\/uploads\/sites\/3\/2025\/04\/image-2-300x200.png 300w, https:\/\/vacif.com\/en\/wp-content\/uploads\/sites\/3\/2025\/04\/image-2-768x513.png 768w\" sizes=\"auto, (max-width: 975px) 100vw, 975px\" \/><\/figure>\n<\/div>\n\n\n<div class=\"wp-block-essential-blocks-advanced-heading  root-eb-advance-heading-rn9vk\"><div class=\"eb-parent-wrapper eb-parent-eb-advance-heading-rn9vk \"><div class=\"eb-advance-heading-wrapper eb-advance-heading-rn9vk button-1 undefined\" data-id=\"eb-advance-heading-rn9vk\"><h2 class=\"eb-ah-title\"><span class=\"first-title\">II &#8211; H\u01b0\u1edbng d\u1eabn c\u1ea5u h\u00ecnh<\/span><\/h2><\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-essential-blocks-advanced-heading  root-eb-advance-heading-81y0e\"><div class=\"eb-parent-wrapper eb-parent-eb-advance-heading-81y0e \"><div class=\"eb-advance-heading-wrapper eb-advance-heading-81y0e button-1 undefined\" data-id=\"eb-advance-heading-81y0e\"><h2 class=\"eb-ah-title\"><span class=\"first-title\">B\u01b0\u1edbc 1: H\u01b0\u1edbng d\u1eabn c\u1ea5u h\u00ecnh<\/span><\/h2><\/div><\/div><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>T\u1ea1o Firewall rule v\u00e0 b\u1eadt t\u00ednh n\u0103ng Zero-day Protection<\/li>\n\n\n\n<li>Truy c\u1eadp\u00a0<strong>R<em>ule and policies<\/em>\u00a0&gt;\u00a0<em>Firewall rules<\/em>\u00a0&gt;\u00a0<em>Add firewall rule<\/em>\u00a0&gt;\u00a0<em>New firewall rule<\/em><\/strong><\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"975\" height=\"441\" src=\"https:\/\/vacif.com\/wp-content\/uploads\/sites\/3\/2025\/04\/image-3.png\" alt=\"\" class=\"wp-image-21997\" srcset=\"https:\/\/vacif.com\/en\/wp-content\/uploads\/sites\/3\/2025\/04\/image-3.png 975w, https:\/\/vacif.com\/en\/wp-content\/uploads\/sites\/3\/2025\/04\/image-3-600x271.png 600w, https:\/\/vacif.com\/en\/wp-content\/uploads\/sites\/3\/2025\/04\/image-3-300x136.png 300w, https:\/\/vacif.com\/en\/wp-content\/uploads\/sites\/3\/2025\/04\/image-3-768x347.png 768w\" sizes=\"auto, (max-width: 975px) 100vw, 975px\" \/><\/figure>\n<\/div>\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Rule Name:<\/strong>\u00a0\u0110i\u1ec1n t\u00ean b\u1ea1n mu\u1ed1n<\/li>\n\n\n\n<li><strong>Action:<\/strong>\u00a0ch\u1ecdn Accept<\/li>\n\n\n\n<li>T\u00edch ch\u1ecdn\u00a0<strong>Log firewall traffic<\/strong>\u00a0\u0111\u1ec3 xem log match v\u1edbi rule n\u00e0y<\/li>\n\n\n\n<li><strong>Source zone:<\/strong>\u00a0LAN<\/li>\n\n\n\n<li><strong>Source networks and devices<\/strong>: 192.168.23.0\/24<\/li>\n\n\n\n<li><strong>Destination Zones:<\/strong>\u00a0WAN<\/li>\n\n\n\n<li><strong>Destination networks:<\/strong>\u00a0Any<\/li>\n\n\n\n<li><strong>Services:\u00a0<\/strong>Any<\/li>\n<\/ol>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"975\" height=\"463\" src=\"https:\/\/vacif.com\/wp-content\/uploads\/sites\/3\/2025\/04\/image-4.png\" alt=\"\" class=\"wp-image-21998\" srcset=\"https:\/\/vacif.com\/en\/wp-content\/uploads\/sites\/3\/2025\/04\/image-4.png 975w, https:\/\/vacif.com\/en\/wp-content\/uploads\/sites\/3\/2025\/04\/image-4-600x285.png 600w, https:\/\/vacif.com\/en\/wp-content\/uploads\/sites\/3\/2025\/04\/image-4-300x142.png 300w, https:\/\/vacif.com\/en\/wp-content\/uploads\/sites\/3\/2025\/04\/image-4-768x365.png 768w\" sizes=\"auto, (max-width: 975px) 100vw, 975px\" \/><\/figure>\n<\/div>\n\n\n<ul class=\"wp-block-list\">\n<li>Trong Web Policy ch\u1ecdn&nbsp;<strong>Scan HTTP and Decrypted HTTPS v\u00e0 Use Zero-day Protection<\/strong>&nbsp;\u0111\u1ec3 s\u1eed d\u1ee5ng t\u00ednh n\u0103ng n\u00e0y.<\/li>\n\n\n\n<li>Nh\u1ea5n <strong>Save <\/strong>\u0111\u1ec3 l\u01b0u<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"975\" height=\"191\" src=\"https:\/\/vacif.com\/wp-content\/uploads\/sites\/3\/2025\/04\/image-5.png\" alt=\"\" class=\"wp-image-21999\" srcset=\"https:\/\/vacif.com\/en\/wp-content\/uploads\/sites\/3\/2025\/04\/image-5.png 975w, https:\/\/vacif.com\/en\/wp-content\/uploads\/sites\/3\/2025\/04\/image-5-600x118.png 600w, https:\/\/vacif.com\/en\/wp-content\/uploads\/sites\/3\/2025\/04\/image-5-300x59.png 300w, https:\/\/vacif.com\/en\/wp-content\/uploads\/sites\/3\/2025\/04\/image-5-768x150.png 768w\" sizes=\"auto, (max-width: 975px) 100vw, 975px\" \/><\/figure>\n<\/div>\n\n\n<div class=\"wp-block-essential-blocks-advanced-heading  root-eb-advance-heading-sv68o\"><div class=\"eb-parent-wrapper eb-parent-eb-advance-heading-sv68o \"><div class=\"eb-advance-heading-wrapper eb-advance-heading-sv68o button-1 undefined\" data-id=\"eb-advance-heading-sv68o\"><h2 class=\"eb-ah-title\"><span class=\"first-title\">** Gi\u1ea3i th\u00edch th\u00eam:<\/span><\/h2><\/div><\/div><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Apply web category-based traffic shaping:<\/strong> B\u1ea1n c\u00f3 th\u1ec3 gi\u1edbi h\u1ea1n b\u0103ng th\u00f4ng d\u1ef1a tr\u00ean danh m\u1ee5c website, v\u00ed d\u1ee5 nh\u01b0 gi\u1edbi h\u1ea1n t\u1ed1c \u0111\u1ed9 t\u1ea3i file t\u1eeb c\u00e1c trang chia s\u1ebb d\u1eef li\u1ec7u. N\u1ebfu kh\u00f4ng ch\u1ecdn, m\u1ecdi trang web s\u1ebd s\u1eed d\u1ee5ng t\u1ed1c \u0111\u1ed9 t\u1ed1i \u0111a m\u00e0 kh\u00f4ng c\u00f3 gi\u1edbi h\u1ea1n b\u0103ng th\u00f4ng.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Block QUIC protocol: <\/strong>QUIC l\u00e0 giao th\u1ee9c t\u0103ng t\u1ed1c truy c\u1eadp web, nh\u01b0ng c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m kh\u1ea3 n\u0103ng ki\u1ec3m so\u00e1t n\u1ed9i dung web tr\u00ean firewall. N\u1ebfu ch\u1ecdn ch\u1eb7n QUIC, tr\u00ecnh duy\u1ec7t Chrome ho\u1eb7c Edge s\u1ebd ph\u1ea3i s\u1eed d\u1ee5ng HTTP\/HTTPS qua firewall, gi\u00fap ki\u1ec3m so\u00e1t t\u1ed1t h\u01a1n. N\u1ebfu kh\u00f4ng ch\u1ecdn, tr\u00ecnh duy\u1ec7t c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng QUIC (UDP\/443), l\u00e0m gi\u1ea3m kh\u1ea3 n\u0103ng ki\u1ec3m so\u00e1t l\u01b0u l\u01b0\u1ee3ng web.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Scan HTTP and decrypted HTTPS: <\/strong>Firewall c\u00f3 th\u1ec3 ki\u1ec3m tra t\u1ea5t c\u1ea3 trang web \u0111\u1ec3 ph\u00e1t hi\u1ec7n m\u00e3 \u0111\u1ed9c. N\u1ebfu ch\u1ecdn qu\u00e9t HTTP v\u00e0 HTTPS, t\u1ea5t c\u1ea3 c\u00e1c trang web s\u1ebd \u0111\u01b0\u1ee3c ph\u00e2n t\u00edch. N\u1ebfu kh\u00f4ng ch\u1ecdn, ch\u1ec9 c\u00e1c trang HTTP m\u1edbi \u0111\u01b0\u1ee3c qu\u00e9t, c\u00f2n c\u00e1c trang HTTPS s\u1ebd kh\u00f4ng \u0111\u01b0\u1ee3c ki\u1ec3m tra, c\u00f3 th\u1ec3 b\u1ecf l\u1ee1 c\u00e1c m\u1ed1i \u0111e d\u1ecda ti\u1ec1m \u1ea9n.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Use zero-day protection:<\/strong> Zero-day Protection gi\u00fap ph\u00e1t hi\u1ec7n c\u00e1c m\u1ed1i \u0111e d\u1ecda m\u1edbi ch\u01b0a c\u00f3 trong danh s\u00e1ch ch\u1eef k\u00fd virus. N\u1ebfu b\u1eadt t\u00ednh n\u0103ng n\u00e0y, firewall s\u1ebd s\u1eed d\u1ee5ng sandboxing \u0111\u1ec3 ph\u00e2n t\u00edch c\u00e1c m\u1ed1i \u0111e d\u1ecda ch\u01b0a c\u00f3 ch\u1eef k\u00fd. N\u1ebfu kh\u00f4ng b\u1eadt, firewall ch\u1ec9 d\u1ef1a v\u00e0o ch\u1eef k\u00fd virus truy\u1ec1n th\u1ed1ng v\u00e0 c\u00f3 th\u1ec3 kh\u00f4ng ph\u00e1t hi\u1ec7n \u0111\u01b0\u1ee3c m\u00e3 \u0111\u1ed9c m\u1edbi.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Scan FTP for malware:<\/strong> B\u1ea1n c\u00f3 th\u1ec3 y\u00eau c\u1ea7u firewall qu\u00e9t t\u1ea5t c\u1ea3 c\u00e1c t\u1ec7p t\u1ea3i xu\u1ed1ng qua FTP \u0111\u1ec3 ph\u00e1t hi\u1ec7n virus. N\u1ebfu kh\u00f4ng b\u1eadt t\u00ednh n\u0103ng n\u00e0y, c\u00e1c t\u1ec7p t\u1ea3i xu\u1ed1ng t\u1eeb FTP s\u1ebd kh\u00f4ng \u0111\u01b0\u1ee3c ki\u1ec3m tra, c\u00f3 th\u1ec3 ch\u1ee9a m\u00e3 \u0111\u1ed9c.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Use web proxy instead of DPI engine:<\/strong> Web Proxy gi\u00fap ki\u1ec3m so\u00e1t n\u1ed9i dung web t\u1ed1t h\u01a1n, trong khi DPI Engine gi\u00fap t\u1ed1c \u0111\u1ed9 nhanh h\u01a1n. N\u1ebfu b\u1eadt Web Proxy, t\u1ea5t c\u1ea3 l\u01b0u l\u01b0\u1ee3ng web s\u1ebd \u0111\u01b0\u1ee3c chuy\u1ec3n qua proxy \u0111\u1ec3 ki\u1ec3m so\u00e1t n\u1ed9i dung. N\u1ebfu ch\u1ecdn DPI Engine, firewall s\u1ebd qu\u00e9t tr\u1ef1c ti\u1ebfp m\u00e0 kh\u00f4ng qua proxy, gi\u00fap t\u0103ng hi\u1ec7u su\u1ea5t nh\u01b0ng c\u00f3 th\u1ec3 k\u00e9m hi\u1ec7u qu\u1ea3 v\u1edbi HTTPS.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Decrypt HTTPS during web proxy filtering:<\/strong> Gi\u1ea3i m\u00e3 HTTPS cho ph\u00e9p firewall ki\u1ec3m tra n\u1ed9i dung c\u1ee7a c\u00e1c trang web HTTPS. Tuy nhi\u00ean, t\u00ednh n\u0103ng n\u00e0y y\u00eau c\u1ea7u b\u1ea1n ph\u1ea3i c\u00e0i \u0111\u1eb7t ch\u1ee9ng ch\u1ec9 CA tr\u00ean m\u00e1y tr\u1ea1m. N\u1ebfu kh\u00f4ng ch\u1ecdn, firewall s\u1ebd kh\u00f4ng th\u1ec3 ki\u1ec3m tra n\u1ed9i dung c\u1ee7a trang web HTTPS, ch\u1ec9 c\u00f3 th\u1ec3 d\u1ef1a v\u00e0o danh m\u1ee5c URL ho\u1eb7c ki\u1ec3m tra theo t\u00ean mi\u1ec1n.<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-essential-blocks-advanced-heading  root-eb-advance-heading-4q1zo\"><div class=\"eb-parent-wrapper eb-parent-eb-advance-heading-4q1zo \"><div class=\"eb-advance-heading-wrapper eb-advance-heading-4q1zo button-1 undefined\" data-id=\"eb-advance-heading-4q1zo\"><h2 class=\"eb-ah-title\"><span class=\"first-title\">B\u01b0\u1edbc 2: <strong>Ki\u1ec3m tra t\u00ednh n\u0103ng Zero-day Protection<\/strong><\/span><\/h2><\/div><\/div><\/div>\n\n\n\n<p>Truy c\u1eadp trang web: <a href=\"https:\/\/www.wicar.org\/\"><strong>https:\/\/www.wicar.org\/<\/strong><\/a> v\u00e0 ch\u1ecdn download c\u00e1i file test ph\u00eda d\u01b0\u1edbi<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"975\" height=\"463\" src=\"https:\/\/vacif.com\/wp-content\/uploads\/sites\/3\/2025\/04\/image-6.png\" alt=\"\" class=\"wp-image-22000\" srcset=\"https:\/\/vacif.com\/en\/wp-content\/uploads\/sites\/3\/2025\/04\/image-6.png 975w, https:\/\/vacif.com\/en\/wp-content\/uploads\/sites\/3\/2025\/04\/image-6-600x285.png 600w, https:\/\/vacif.com\/en\/wp-content\/uploads\/sites\/3\/2025\/04\/image-6-300x142.png 300w, https:\/\/vacif.com\/en\/wp-content\/uploads\/sites\/3\/2025\/04\/image-6-768x365.png 768w\" sizes=\"auto, (max-width: 975px) 100vw, 975px\" \/><\/figure>\n<\/div>\n\n\n<p>K\u1ebft qu\u1ea3 sau khi c\u1ea5u h\u00ecnh.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"975\" height=\"463\" src=\"https:\/\/vacif.com\/wp-content\/uploads\/sites\/3\/2025\/04\/image-7.png\" alt=\"\" class=\"wp-image-22001\" srcset=\"https:\/\/vacif.com\/en\/wp-content\/uploads\/sites\/3\/2025\/04\/image-7.png 975w, https:\/\/vacif.com\/en\/wp-content\/uploads\/sites\/3\/2025\/04\/image-7-600x285.png 600w, https:\/\/vacif.com\/en\/wp-content\/uploads\/sites\/3\/2025\/04\/image-7-300x142.png 300w, https:\/\/vacif.com\/en\/wp-content\/uploads\/sites\/3\/2025\/04\/image-7-768x365.png 768w\" sizes=\"auto, (max-width: 975px) 100vw, 975px\" \/><\/figure>\n<\/div>\n\n\n<p>\u0110\u1ec3 ki\u1ec3m tra k\u1ebft qu\u1ea3 tr\u00ean Sophos Firewall ch\u1ecdn&nbsp;<strong>Zero-day Protection &gt;<\/strong>&nbsp;<strong>Dowloads and Attachments<\/strong>.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"975\" height=\"463\" src=\"https:\/\/vacif.com\/wp-content\/uploads\/sites\/3\/2025\/04\/image-8.png\" alt=\"\" class=\"wp-image-22002\" srcset=\"https:\/\/vacif.com\/en\/wp-content\/uploads\/sites\/3\/2025\/04\/image-8.png 975w, https:\/\/vacif.com\/en\/wp-content\/uploads\/sites\/3\/2025\/04\/image-8-600x285.png 600w, https:\/\/vacif.com\/en\/wp-content\/uploads\/sites\/3\/2025\/04\/image-8-300x142.png 300w, https:\/\/vacif.com\/en\/wp-content\/uploads\/sites\/3\/2025\/04\/image-8-768x365.png 768w\" sizes=\"auto, (max-width: 975px) 100vw, 975px\" \/><\/figure>\n<\/div>\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Zero-day l\u00e0 nh\u1eefng l\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt ch\u01b0a \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n ho\u1eb7c ch\u01b0a c\u00f3 b\u1ea3n v\u00e1 t\u1eeb nh\u00e0 cung c\u1ea5p. Tin t\u1eb7c c\u00f3 th\u1ec3 khai th\u00e1c nh\u1eefng l\u1ed7 h\u1ed5ng n\u00e0y \u0111\u1ec3 t\u1ea5n c\u00f4ng h\u1ec7 th\u1ed1ng tr\u01b0\u1edbc khi c\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt k\u1ecbp th\u1eddi ng\u0103n ch\u1eb7n. Sophos s\u1eed d\u1ee5ng nhi\u1ec1u c\u00f4ng ngh\u1ec7 ti\u00ean ti\u1ebfn \u0111\u1ec3 [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":21996,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_eb_attr":"","ocean_post_layout":"","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"","ocean_second_sidebar":"","ocean_disable_margins":"enable","ocean_add_body_class":"","ocean_shortcode_before_top_bar":"","ocean_shortcode_after_top_bar":"","ocean_shortcode_before_header":"","ocean_shortcode_after_header":"","ocean_has_shortcode":"","ocean_shortcode_after_title":"","ocean_shortcode_before_footer_widgets":"","ocean_shortcode_after_footer_widgets":"","ocean_shortcode_before_footer_bottom":"","ocean_shortcode_after_footer_bottom":"","ocean_display_top_bar":"default","ocean_display_header":"default","ocean_header_style":"","ocean_center_header_left_menu":"","ocean_custom_header_template":"","ocean_custom_logo":0,"ocean_custom_retina_logo":0,"ocean_custom_logo_max_width":0,"ocean_custom_logo_tablet_max_width":0,"ocean_custom_logo_mobile_max_width":0,"ocean_custom_logo_max_height":0,"ocean_custom_logo_tablet_max_height":0,"ocean_custom_logo_mobile_max_height":0,"ocean_header_custom_menu":"","ocean_menu_typo_font_family":"","ocean_menu_typo_font_subset":"","ocean_menu_typo_font_size":0,"ocean_menu_typo_font_size_tablet":0,"ocean_menu_typo_font_size_mobile":0,"ocean_menu_typo_font_size_unit":"px","ocean_menu_typo_font_weight":"","ocean_menu_typo_font_weight_tablet":"","ocean_menu_typo_font_weight_mobile":"","ocean_menu_typo_transform":"","ocean_menu_typo_transform_tablet":"","ocean_menu_typo_transform_mobile":"","ocean_menu_typo_line_height":0,"ocean_menu_typo_line_height_tablet":0,"ocean_menu_typo_line_height_mobile":0,"ocean_menu_typo_line_height_unit":"","ocean_menu_typo_spacing":0,"ocean_menu_typo_spacing_tablet":0,"ocean_menu_typo_spacing_mobile":0,"ocean_menu_typo_spacing_unit":"","ocean_menu_link_color":"","ocean_menu_link_color_hover":"","ocean_menu_link_color_active":"","ocean_menu_link_background":"","ocean_menu_link_hover_background":"","ocean_menu_link_active_background":"","ocean_menu_social_links_bg":"","ocean_menu_social_hover_links_bg":"","ocean_menu_social_links_color":"","ocean_menu_social_hover_links_color":"","ocean_disable_title":"default","ocean_disable_heading":"default","ocean_post_title":"","ocean_post_subheading":"","ocean_post_title_style":"","ocean_post_title_background_color":"","ocean_post_title_background":0,"ocean_post_title_bg_image_position":"","ocean_post_title_bg_image_attachment":"","ocean_post_title_bg_image_repeat":"","ocean_post_title_bg_image_size":"","ocean_post_title_height":0,"ocean_post_title_bg_overlay":0.5,"ocean_post_title_bg_overlay_color":"","ocean_disable_breadcrumbs":"default","ocean_breadcrumbs_color":"","ocean_breadcrumbs_separator_color":"","ocean_breadcrumbs_links_color":"","ocean_breadcrumbs_links_hover_color":"","ocean_display_footer_widgets":"default","ocean_display_footer_bottom":"default","ocean_custom_footer_template":"","ocean_post_oembed":"","ocean_post_self_hosted_media":"","ocean_post_video_embed":"","ocean_link_format":"","ocean_link_format_target":"self","ocean_quote_format":"","ocean_quote_format_link":"post","ocean_gallery_link_images":"on","ocean_gallery_id":[],"footnotes":""},"categories":[70],"tags":[334],"class_list":["post-21990","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-firewall","tag-sophos-firewall","entry","has-media"],"_links":{"self":[{"href":"https:\/\/vacif.com\/en\/wp-json\/wp\/v2\/posts\/21990","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vacif.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vacif.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vacif.com\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/vacif.com\/en\/wp-json\/wp\/v2\/comments?post=21990"}],"version-history":[{"count":1,"href":"https:\/\/vacif.com\/en\/wp-json\/wp\/v2\/posts\/21990\/revisions"}],"predecessor-version":[{"id":25595,"href":"https:\/\/vacif.com\/en\/wp-json\/wp\/v2\/posts\/21990\/revisions\/25595"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vacif.com\/en\/wp-json\/wp\/v2\/media\/21996"}],"wp:attachment":[{"href":"https:\/\/vacif.com\/en\/wp-json\/wp\/v2\/media?parent=21990"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vacif.com\/en\/wp-json\/wp\/v2\/categories?post=21990"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vacif.com\/en\/wp-json\/wp\/v2\/tags?post=21990"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}