{"id":7981,"date":"2021-08-18T12:16:34","date_gmt":"2021-08-18T05:16:34","guid":{"rendered":"https:\/\/tct.vn\/blog\/?p=7981"},"modified":"2021-08-18T12:17:52","modified_gmt":"2021-08-18T05:17:52","slug":"tu-nhien-mat-ket-noi-internet-va-cach-khac-phuc","status":"publish","type":"post","link":"https:\/\/tct.vn\/blog\/tu-nhien-mat-ket-noi-internet-va-cach-khac-phuc\/","title":{"rendered":"T\u1ef1 nhi\u00ean m\u1ea5t k\u1ebft n\u1ed1i Internet v\u00e0 c\u00e1ch kh\u00e1c ph\u1ee5c"},"content":{"rendered":"<p>V\u00e0o 1 ng\u00e0y \u0111\u1eb9p tr\u1eddi b\u1ea1n m\u1edf m\u00e1y l\u00ean v\u00e0 v\u00e0o m\u1ea1ng internet th\u00ec th\u1ea5y kh\u00f4ng c\u00f3 ph\u1ea3n h\u1ed3i,c\u1ea3m gi\u00e1c s\u1ebd nh\u01b0 th\u1ebf n\u00e0o n\u00e8!<\/p>\n<p>D\u01b0\u1edbi \u0111\u00e2y t\u00f4i s\u1ebd ch\u1ec9 b\u1ea1n 1 s\u1ed1 c\u00e1ch \u0111\u1ec3 kh\u1eafc ph\u1ee5c tr\u00ecnh tr\u1ea1ng tr\u00ean<\/p>\n<h2>1 Proxy kh\u00f4ng \u0111\u00fang<\/h2>\n<p>\u0110\u1ec3 ti\u1ebft ki\u1ec7m l\u01b0\u1ee3ng d\u1eef li\u1ec7u t\u1ea3i v\u1ec1, ki\u1ec3m so\u00e1t th\u00f4ng tin v\u00e0 \u0111\u1ea3m b\u1ea3o an to\u00e0n khi truy c\u1eadp Internet th\u00ec m\u1ed9t s\u1ed1 h\u1ec7 th\u1ed1ng thi\u1ebft l\u1eadp th\u00eam m\u00e1y ch\u1ee7 proxy (t\u1ea1i tr\u01b0\u1eddng h\u1ecdc, qu\u00e1n c\u00e0 ph\u00ea&#8230;). Khi \u0111\u00f3, n\u1ebfu mu\u1ed1n k\u1ebft n\u1ed1i \u0111\u1ebfn Internet t\u1eeb h\u1ec7 th\u1ed1ng tr\u00ean, m\u00e1y t\u00ednh ph\u1ea3i \u0111\u1eb7t\u00a0<strong>proxy<\/strong>\u00a0c\u1ed1 \u0111\u1ecbnh theo y\u00eau c\u1ea7u.<\/p>\n<p>M\u1ed9t tr\u01b0\u1eddng h\u1ee3p kh\u00e1c l\u00e0 ng\u01b0\u1eddi d\u00f9ng s\u1eed d\u1ee5ng\u00a0<strong>UltraSurf<\/strong>\u00a0\u0111\u1ec3 v\u00e0o Facebook, r\u1ed3i sau \u0111\u00f3 kh\u00f4ng v\u00e0o m\u1ea1ng \u0111\u01b0\u1ee3c n\u1eefa. V\u1edbi l\u1ed7i n\u00e0y, m\u1ed7i tr\u00ecnh duy\u1ec7t s\u1ebd c\u00f3 nh\u1eefng th\u00f4ng b\u00e1o kh\u00e1c nhau, ch\u1eb3ng h\u1ea1n Google Chrome l\u00e0 &#8220;<em>Unable to connect to the proxy server&#8221;.<\/em><\/p>\n<div style=\"width: 433px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-8096\" title=\"C\u00e1ch kh\u1eafc ph\u1ee5c khi m\u1ea5t k\u1ebft n\u1ed1i Internet\" src=\"https:\/\/tct.vn\/blog\/wp-content\/uploads\/2021\/08\/ket-noi-1.jpg\" alt=\"C\u00e1ch kh\u1eafc ph\u1ee5c khi m\u1ea5t k\u1ebft n\u1ed1i Internet\" width=\"423\" height=\"541\" srcset=\"https:\/\/tct.vn\/blog\/wp-content\/uploads\/2021\/08\/ket-noi-1.jpg 423w, https:\/\/tct.vn\/blog\/wp-content\/uploads\/2021\/08\/ket-noi-1-313x400.jpg 313w\" sizes=\"auto, (max-width: 423px) 100vw, 423px\" \/><p class=\"wp-caption-text\">Thi\u1ebft l\u1eadp proxy server tr\u00ean Internet Explorer.<\/p><\/div>\n<p>&nbsp;<\/p>\n<p>N\u1ebfu c\u1ea7n truy c\u1eadp Internet t\u1ea1i nh\u1eefng n\u01a1i c\u00f3 proxy, b\u1ea1n h\u00e3y h\u1ecfi nh\u00e2n vi\u00ean ho\u1eb7c nh\u1eefng ng\u01b0\u1eddi xung quanh \u0111\u1ec3 \u0111\u1ecba ch\u1ec9 proxy, r\u1ed3i thi\u1ebft l\u1eadp tr\u00ean tr\u00ecnh duy\u1ec7t c\u1ee7a m\u00ecnh. L\u01b0u \u00fd, b\u1ea1n n\u00ean thi\u1ebft l\u1eadp proxy tr\u00ean Internet Explorer v\u00ec c\u00f3 th\u1ec3 d\u00f9ng chung cho c\u00e1c tr\u00ecnh duy\u1ec7t kh\u00e1c v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng nh\u01b0 Yahoo! Messenger, Skype\u2026<\/p>\n<p>Tr\u00ean giao di\u1ec7n ch\u00ednh c\u1ee7a tr\u00ecnh duy\u1ec7t Internet Explorer, b\u1ea1n v\u00e0o &#8220;<strong>Tools &gt; Internet options &gt; Connections &gt; LAN settings&#8221;<\/strong>, \u0111\u00e1nh d\u1ea5u ch\u1ecdn v\u00e0o\u00a0<strong>&#8220;Use a proxy server for your LAN<\/strong>&#8220;, nh\u1eadp \u0111\u1ecba ch\u1ec9 proxy v\u00e0o \u00f4\u00a0<strong>Address\u00a0<\/strong>v\u00e0 nh\u1eadp c\u1ed5ng proxy v\u00e0o \u00f4\u00a0<strong>Port<\/strong>\u00a0b\u00ean d\u01b0\u1edbi. Ng\u01b0\u1ee3c l\u1ea1i, khi truy c\u1eadp Internet t\u1eeb n\u01a1i kh\u00e1c, b\u1ea1n ph\u1ea3i h\u1ee7y ch\u1ecdn s\u1eed d\u1ee5ng proxy.<\/p>\n<div class=\"quote\">\n<p>Proxy l\u00e0 m\u1ed9t m\u00e1y ch\u1ee7 l\u00e0m nhi\u1ec7m v\u1ee5 chuy\u1ec3n ti\u1ebfp th\u00f4ng tin v\u00e0 ki\u1ec3m so\u00e1t, t\u1ea1o s\u1ef1 an to\u00e0n cho vi\u1ec7c truy c\u1eadp Internet c\u1ee7a c\u00e1c m\u00e1y kh\u00e1ch. Tr\u1ea1m c\u00e0i \u0111\u1eb7t proxy g\u1ecdi l\u00e0 proxy server. Proxy hay tr\u1ea1m c\u00e0i \u0111\u1eb7t proxy c\u00f3 \u0111\u1ecba ch\u1ec9 IP v\u00e0 m\u1ed9t c\u1ed5ng truy c\u1eadp c\u1ed1 \u0111\u1ecbnh. V\u00ed d\u1ee5:\u00a0<strong>123.234.111.222:80\u00a0<\/strong>v\u1edbi \u0111\u1ecba ch\u1ec9 l\u00e0\u00a0<strong>123.234.111.222\u00a0<\/strong>v\u00e0 c\u1ed5ng truy c\u1eadp l\u00e0\u00a0<strong>80.<\/strong><\/p>\n<h2>2 L\u1ed7i DNS<\/h2>\n<p>V\u1edbi\u00a0l\u1ed7i DNS\u00a0n\u00e0y, tr\u00ecnh duy\u1ec7t Internet Explorer s\u1ebd hi\u1ec7n th\u00f4ng b\u00e1o &#8220;<strong>Internet Explorer cannot display the webpage<\/strong>&#8221; khi m\u1ed9t trang web kh\u00f4ng truy c\u1eadp \u0111\u01b0\u1ee3c, trong \u0111\u00f3 c\u00f3 th\u1ec3 do l\u1ed7i t\u1eeb\u00a0DNS. C\u00f2n tr\u00ecnh duy\u1ec7t Google Chrome th\u00ec r\u00f5 r\u00e0ng h\u01a1n, ngo\u00e0i d\u00f2ng th\u00f4ng b\u00e1o\u00a0<strong>&#8220;This webpage is not available&#8221;,<\/strong>\u00a0b\u1ea1n c\u00f2n d\u1ec5 d\u00e0ng nh\u1eadn di\u1ec7n l\u1ed7i DNS qua th\u00f4ng tin &#8220;<strong>because the\u00a0DNS lookup\u00a0failed&#8221;.<\/strong><\/p>\n<div style=\"width: 510px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-8097\" title=\"C\u00e1ch kh\u1eafc ph\u1ee5c khi m\u1ea5t k\u1ebft n\u1ed1i Internet\" src=\"https:\/\/tct.vn\/blog\/wp-content\/uploads\/2021\/08\/ket-noi-2.jpg\" alt=\"C\u00e1ch kh\u1eafc ph\u1ee5c khi m\u1ea5t k\u1ebft n\u1ed1i Internet\" width=\"500\" height=\"295\" srcset=\"https:\/\/tct.vn\/blog\/wp-content\/uploads\/2021\/08\/ket-noi-2.jpg 500w, https:\/\/tct.vn\/blog\/wp-content\/uploads\/2021\/08\/ket-noi-2-400x236.jpg 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><p class=\"wp-caption-text\">Th\u00f4ng b\u00e1o l\u1ed7i truy c\u1eadp web do DNS<\/p><\/div>\n<p>M\u1eb7c \u0111\u1ecbnh, m\u00e1y t\u00ednh s\u1eed d\u1ee5ng h\u1ec7 th\u1ed1ng DNS c\u1ee7a nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 \u0111\u1ec3 nh\u1eadn di\u1ec7n c\u00e1c \u0111\u1ecba ch\u1ec9 web nh\u1eadp v\u00e0o, nh\u01b0ng c\u00f3 nh\u1eefng \u0111\u1ecba ch\u1ec9 b\u1ecb lo\u1ea1i b\u1ecf kh\u1ecfi h\u1ec7 th\u1ed1ng DNS n\u00e0y, khi\u1ebfn ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng truy c\u1eadp \u0111\u01b0\u1ee3c, nh\u01b0\u00a0www.facebook.com. \u0110\u1ec3 x\u1eed l\u00fd, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng m\u1ed9t h\u1ec7 th\u1ed1ng DNS kh\u00e1c, c\u1ee7a Google l\u00e0\u00a0<strong>8.8.8.8\/8.8.4.4<\/strong>.<\/p>\n<p>V\u00ed d\u1ee5 tr\u00ean Windows 7, b\u1ea1n nh\u1ea5n chu\u1ed9t ph\u1ea3i v\u00e0o bi\u1ec3u t\u01b0\u1ee3ng Internet d\u01b0\u1edbi g\u00f3c ph\u1ea3i m\u00e0n h\u00ecnh, ch\u1ecdn\u00a0<strong>Open Network and Sharing Center<\/strong>, sau \u0111\u00f3\u00a0<strong>Change adapter settings.\u00a0<\/strong>Nh\u1ea5n chu\u1ed9t ph\u1ea3i l\u00ean bi\u1ec3u t\u01b0\u1ee3ng card m\u1ea1ng \u0111ang d\u00f9ng k\u1ebft n\u1ed1i Internet (d\u00f9ng m\u1ea1ng d\u00e2y th\u01b0\u1eddng l\u00e0\u00a0<strong>Local Area Connection<\/strong>, c\u00f2n d\u00f9ng Wi-Fi th\u01b0\u1eddng l\u00e0\u00a0<strong>Wireless Network Connection<\/strong>), ch\u1ecdn<strong>\u00a0Properties<\/strong>, nh\u1ea5n \u0111\u00f4i chu\u1ed9t v\u00e0o<strong>\u00a0Internet Protocol Version 4\u00a0<\/strong>trong danh s\u00e1ch &#8220;<strong>The connection users the following items&#8221;.\u00a0<\/strong>Tr\u00ean c\u1eeda s\u1ed5 hi\u1ec7n ra, b\u1ea1n \u0111\u00e1nh d\u1ea5u ch\u1ecdn v\u00e0o &#8220;<strong>Use the following DNS server address<\/strong>&#8220;, nh\u1eadp \u0111\u1ecba ch\u1ec9 DNS ch\u00ednh v\u00e0o \u00f4\u00a0<strong>&#8220;Preferred DNS server&#8221;<\/strong>. Th\u00f4ng th\u01b0\u1eddng, m\u1ed9t h\u1ec7 th\u1ed1ng DNS s\u1ebd c\u00f3 th\u00eam \u0111\u1ecba ch\u1ec9 DNS ph\u1ee5, b\u1ea1n nh\u1eadp v\u00e0o \u00f4<strong>\u00a0Alternate DNS server.<\/strong><\/p>\n<div class=\"adbox in-article\"><\/div>\n<div style=\"width: 424px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-8098\" title=\"C\u00e1ch kh\u1eafc ph\u1ee5c khi m\u1ea5t k\u1ebft n\u1ed1i Internet\" src=\"https:\/\/tct.vn\/blog\/wp-content\/uploads\/2021\/08\/ket-noi-3-1.jpg\" alt=\"C\u00e1ch kh\u1eafc ph\u1ee5c khi m\u1ea5t k\u1ebft n\u1ed1i Internet\" width=\"414\" height=\"461\" srcset=\"https:\/\/tct.vn\/blog\/wp-content\/uploads\/2021\/08\/ket-noi-3-1.jpg 414w, https:\/\/tct.vn\/blog\/wp-content\/uploads\/2021\/08\/ket-noi-3-1-359x400.jpg 359w\" sizes=\"auto, (max-width: 414px) 100vw, 414px\" \/><p class=\"wp-caption-text\">C\u1eeda s\u1ed5 thi\u1ebft l\u1eadp IP v\u00e0 DNS.<\/p><\/div>\n<h2>3 V\u1ea5n \u0111\u1ec1 v\u1edbi t\u01b0\u1eddng l\u1eeda<\/h2>\n<p>T\u01b0\u1eddng l\u1eeda (Firewall) t\u00edch h\u1ee3p s\u1eb5n tr\u00ean Windows \u00edt c\u00f3 kh\u1ea3 n\u0103ng l\u00e0m m\u1ea5t truy c\u1eadp Internet c\u1ee7a m\u00e1y t\u00ednh, nh\u01b0ng t\u01b0\u1eddng l\u1eeda tr\u00ean ch\u01b0\u01a1ng tr\u00ecnh di\u1ec7t virus th\u01b0\u1eddng l\u00e0 t\u00e1c nh\u00e2n khi\u1ebfn &#8220;<em>r\u1edbt m\u1ea1ng&#8221;.\u00a0<\/em>\u0110\u1ed1i v\u1edbi c\u00e1c truy c\u1eadp b\u1ecb t\u01b0\u1eddng l\u1eeda ng\u0103n ch\u1eb7n s\u1ebd c\u00f3 th\u00f4ng b\u00e1o r\u00f5 r\u00e0ng, c\u00f3 t\u1eeb kh\u00f3a quan tr\u1ecdng l\u00e0\u00a0<em>\u201cfirewall\u201d<\/em>.<\/p>\n<div style=\"width: 510px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-8099\" title=\"C\u00e1ch kh\u1eafc ph\u1ee5c khi m\u1ea5t k\u1ebft n\u1ed1i Internet\" src=\"https:\/\/tct.vn\/blog\/wp-content\/uploads\/2021\/08\/ket-noi-4.jpg\" alt=\"C\u00e1ch kh\u1eafc ph\u1ee5c khi m\u1ea5t k\u1ebft n\u1ed1i Internet\" width=\"500\" height=\"366\" srcset=\"https:\/\/tct.vn\/blog\/wp-content\/uploads\/2021\/08\/ket-noi-4.jpg 500w, https:\/\/tct.vn\/blog\/wp-content\/uploads\/2021\/08\/ket-noi-4-400x293.jpg 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><p class=\"wp-caption-text\">Giao di\u1ec7n thi\u1ebft l\u1eadp t\u01b0\u1eddng l\u1eeda tr\u00ean ch\u01b0\u01a1ng tr\u00ecnh Kapersky.<\/p><\/div>\n<p>B\u1ea1n v\u00e0o ph\u1ea7n thi\u1ebft l\u1eadp (<strong>Settings<\/strong>) c\u1ee7a ch\u01b0\u01a1ng tr\u00ecnh di\u1ec7t virus, t\u00ecm \u0111\u1ebfn th\u1ebb\u00a0<strong>Firewall,<\/strong>\u00a0r\u1ed3i th\u1eed b\u1ecf d\u1ea5u\u00a0<strong>Enable<\/strong>, nh\u1ea5n\u00a0<strong>OK\u00a0<\/strong>\u0111\u1ec3 xem k\u1ebft qu\u1ea3. N\u1ebfu v\u1eabn kh\u00f4ng truy c\u1eadp Internet \u0111\u01b0\u1ee3c th\u00ec v\u1ea5n \u0111\u1ec1 kh\u00f4ng ph\u1ea3i \u1edf \u0111\u00e2y, b\u1ea1n h\u00e3y ch\u1ecdn\u00a0<strong>Enable<\/strong>\u00a0l\u1ea1i h\u1ec7 th\u1ed1ng t\u01b0\u1eddng l\u1eeda \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n b\u1ea3o m\u1eadt cho m\u00e1y t\u00ednh.<\/p>\n<p>Cu\u1ed1i c\u00f9ng, n\u1ebfu th\u1eed m\u1ecdi c\u00e1ch m\u00e0 v\u1eabn kh\u00f4ng th\u1ec3 l\u1ea5y l\u1ea1i k\u1ebft n\u1ed1i Internet, th\u00ec gi\u1ea3i ph\u00e1p kh\u1ea3 thi nh\u1ea5t l\u00e0 c\u00e0i l\u1ea1i Windows.<\/p>\n<p>&nbsp;<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>V\u00e0o 1 ng\u00e0y \u0111\u1eb9p tr\u1eddi b\u1ea1n m\u1edf m\u00e1y l\u00ean v\u00e0 v\u00e0o m\u1ea1ng internet th\u00ec th\u1ea5y kh\u00f4ng c\u00f3 ph\u1ea3n h\u1ed3i,c\u1ea3m gi\u00e1c s\u1ebd nh\u01b0 th\u1ebf n\u00e0o n\u00e8! D\u01b0\u1edbi \u0111\u00e2y t\u00f4i s\u1ebd ch\u1ec9 b\u1ea1n 1 s\u1ed1 c\u00e1ch \u0111\u1ec3 kh\u1eafc ph\u1ee5c tr\u00ecnh tr\u1ea1ng tr\u00ean 1 Proxy kh\u00f4ng \u0111\u00fang \u0110\u1ec3 ti\u1ebft ki\u1ec7m l\u01b0\u1ee3ng d\u1eef li\u1ec7u t\u1ea3i v\u1ec1, ki\u1ec3m so\u00e1t th\u00f4ng [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":8096,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-7981","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc"],"_links":{"self":[{"href":"https:\/\/tct.vn\/blog\/wp-json\/wp\/v2\/posts\/7981","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tct.vn\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tct.vn\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tct.vn\/blog\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/tct.vn\/blog\/wp-json\/wp\/v2\/comments?post=7981"}],"version-history":[{"count":0,"href":"https:\/\/tct.vn\/blog\/wp-json\/wp\/v2\/posts\/7981\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tct.vn\/blog\/wp-json\/wp\/v2\/media\/8096"}],"wp:attachment":[{"href":"https:\/\/tct.vn\/blog\/wp-json\/wp\/v2\/media?parent=7981"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tct.vn\/blog\/wp-json\/wp\/v2\/categories?post=7981"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tct.vn\/blog\/wp-json\/wp\/v2\/tags?post=7981"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}