{"id":1927,"date":"2026-07-29T08:05:34","date_gmt":"2026-07-29T08:05:34","guid":{"rendered":"https:\/\/viettelvtt.com\/?p=1927"},"modified":"2026-07-29T14:24:22","modified_gmt":"2026-07-29T14:24:22","slug":"wifi-viettel-khong-vao-duoc-mang","status":"publish","type":"post","link":"https:\/\/viettelvtt.com\/wifi-viettel-khong-vao-duoc-mang\/","title":{"rendered":"WiFi Viettel Kh\u00f4ng V\u00e0o \u0110\u01b0\u1ee3c M\u1ea1ng: Nguy\u00ean Nh\u00e2n &#038; C\u00e1ch S\u1eeda"},"content":{"rendered":"<p><span style=\"font-family: 'times new roman', times, serif;\">T\u00ecnh tr\u1ea1ng <strong><a href=\"https:\/\/viettelvtt.com\/loi-internet-viettel\/\">WiFi Viettel kh\u00f4ng v\u00e0o \u0111\u01b0\u1ee3c m\u1ea1ng<\/a><\/strong> th\u01b0\u1eddng khi\u1ebfn ng\u01b0\u1eddi d\u00f9ng nh\u1ea7m r\u1eb1ng \u0111i\u1ec7n tho\u1ea1i ho\u1eb7c m\u00e1y t\u00ednh \u0111\u00e3 k\u1ebft n\u1ed1i Internet th\u00e0nh c\u00f4ng. Tr\u00ean th\u1ef1c t\u1ebf, bi\u1ec3u t\u01b0\u1ee3ng WiFi ch\u1ec9 cho bi\u1ebft thi\u1ebft b\u1ecb \u0111ang k\u1ebft n\u1ed1i v\u1edbi modem ho\u1eb7c b\u1ed9 ph\u00e1t kh\u00f4ng d\u00e2y. N\u1ebfu modem m\u1ea5t t\u00edn hi\u1ec7u quang, l\u1ed7i k\u1ebft n\u1ed1i Internet ho\u1eb7c thi\u1ebft b\u1ecb nh\u1eadn sai c\u1ea5u h\u00ecnh m\u1ea1ng, bi\u1ec3u t\u01b0\u1ee3ng WiFi v\u1eabn c\u00f3 th\u1ec3 hi\u1ec3n th\u1ecb nh\u01b0ng website v\u00e0 \u1ee9ng d\u1ee5ng kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">L\u1ed7i n\u00e0y c\u00f3 th\u1ec3 xu\u1ea5t hi\u1ec7n tr\u00ean m\u1ed9t \u0111i\u1ec7n tho\u1ea1i, m\u1ed9t m\u00e1y t\u00ednh ho\u1eb7c to\u00e0n b\u1ed9 thi\u1ebft b\u1ecb trong nh\u00e0. N\u1ebfu ch\u1ec9 m\u1ed9t thi\u1ebft b\u1ecb b\u00e1o \u201c\u0110\u00e3 k\u1ebft n\u1ed1i nh\u01b0ng kh\u00f4ng c\u00f3 Internet\u201d, nguy\u00ean nh\u00e2n th\u01b0\u1eddng li\u00ean quan \u0111\u1ebfn \u0111\u1ecba ch\u1ec9 IP, DNS, VPN ho\u1eb7c c\u1ea5u h\u00ecnh m\u1ea1ng c\u1ee7a thi\u1ebft b\u1ecb. N\u1ebfu t\u1ea5t c\u1ea3 \u0111i\u1ec7n tho\u1ea1i, tivi v\u00e0 m\u00e1y t\u00ednh c\u00f9ng m\u1ea5t Internet, c\u1ea7n ki\u1ec3m tra modem, \u0111\u01b0\u1eddng c\u00e1p quang v\u00e0 tr\u1ea1ng th\u00e1i d\u1ecbch v\u1ee5 Viettel.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Viettel c\u0169ng x\u00e1c \u0111\u1ecbnh nh\u1eefng nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn c\u1ee7a t\u00ecnh tr\u1ea1ng WiFi \u0111\u00e3 k\u1ebft n\u1ed1i nh\u01b0ng kh\u00f4ng c\u00f3 Internet g\u1ed3m xung \u0111\u1ed9t \u0111\u1ecba ch\u1ec9 IP, sai c\u1ea5u h\u00ecnh thi\u1ebft b\u1ecb, modem g\u1eb7p l\u1ed7i v\u00e0 s\u1ef1 c\u1ed1 \u0111\u01b0\u1eddng truy\u1ec1n t\u1eeb nh\u00e0 cung c\u1ea5p.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">B\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y h\u01b0\u1edbng d\u1eabn c\u00e1ch ph\u00e2n bi\u1ec7t l\u1ed7i, ki\u1ec3m tra DNS, DHCP, IPv4, IPv6, modem WiFi v\u00e0 x\u1eed l\u00fd theo \u0111\u00fang nguy\u00ean nh\u00e2n. C\u00e1c thao t\u00e1c \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp t\u1eeb \u0111\u01a1n gi\u1ea3n \u0111\u1ebfn n\u00e2ng cao \u0111\u1ec3 ng\u01b0\u1eddi d\u00f9ng tr\u00e1nh reset modem ho\u1eb7c thay \u0111\u1ed5i c\u1ea5u h\u00ecnh kh\u00f4ng c\u1ea7n thi\u1ebft.<\/span><\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Mu\u0323c Lu\u0323c<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/viettelvtt.com\/wifi-viettel-khong-vao-duoc-mang\/#WiFi_Viettel_khong_vao_duoc_mang_la_tinh_trang_gi\" >WiFi Viettel kh\u00f4ng v\u00e0o \u0111\u01b0\u1ee3c m\u1ea1ng l\u00e0 t\u00ecnh tr\u1ea1ng g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/viettelvtt.com\/wifi-viettel-khong-vao-duoc-mang\/#Vi_sao_co_WiFi_nhung_khong_co_Internet\" >V\u00ec sao c\u00f3 WiFi nh\u01b0ng kh\u00f4ng c\u00f3 Internet?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/viettelvtt.com\/wifi-viettel-khong-vao-duoc-mang\/#Bang_chan_doan_nhanh_khi_WiFi_bao_ket_noi_khong_Internet\" >B\u1ea3ng ch\u1ea9n \u0111o\u00e1n nhanh khi WiFi b\u00e1o k\u1ebft n\u1ed1i kh\u00f4ng Internet<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/viettelvtt.com\/wifi-viettel-khong-vao-duoc-mang\/#Cach_khac_phuc_WiFi_Viettel_khong_vao_duoc_mang_theo_8_buoc\" >C\u00e1ch kh\u1eafc ph\u1ee5c WiFi Viettel kh\u00f4ng v\u00e0o \u0111\u01b0\u1ee3c m\u1ea1ng theo 8 b\u01b0\u1edbc<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/viettelvtt.com\/wifi-viettel-khong-vao-duoc-mang\/#Cach_xu_ly_theo_tung_nguyen_nhan\" >C\u00e1ch x\u1eed l\u00fd theo t\u1eebng nguy\u00ean nh\u00e2n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/viettelvtt.com\/wifi-viettel-khong-vao-duoc-mang\/#Co_can_Reset_modem_khi_WiFi_khong_vao_duoc_mang\" >C\u00f3 c\u1ea7n Reset modem khi WiFi kh\u00f4ng v\u00e0o \u0111\u01b0\u1ee3c m\u1ea1ng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/viettelvtt.com\/wifi-viettel-khong-vao-duoc-mang\/#Khi_nao_can_lien_he_ky_thuat_Viettel\" >Khi n\u00e0o c\u1ea7n li\u00ean h\u1ec7 k\u1ef9 thu\u1eadt Viettel?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/viettelvtt.com\/wifi-viettel-khong-vao-duoc-mang\/#Cau_hoi_thuong_gap_ve_WiFi_Viettel_khong_vao_duoc_mang\" >C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 WiFi Viettel kh\u00f4ng v\u00e0o \u0111\u01b0\u1ee3c m\u1ea1ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/viettelvtt.com\/wifi-viettel-khong-vao-duoc-mang\/#Ket_luan\" >K\u1ebft lu\u1eadn<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"WiFi_Viettel_khong_vao_duoc_mang_la_tinh_trang_gi\"><\/span><span style=\"color: #ed1c24;\"><strong><span style=\"font-family: 'times new roman', times, serif;\">WiFi Viettel kh\u00f4ng v\u00e0o \u0111\u01b0\u1ee3c m\u1ea1ng l\u00e0 t\u00ecnh tr\u1ea1ng g\u00ec?<\/span><\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure id=\"attachment_1932\" aria-describedby=\"caption-attachment-1932\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-1932 size-full\" title=\"WiFi Viettel k\u1ebft n\u1ed1i nh\u01b0ng kh\u00f4ng c\u00f3 Internet\" src=\"http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/wifi-viettel-khong-vao-duoc-mang-1.jpg\" alt=\"WiFi Viettel k\u1ebft n\u1ed1i nh\u01b0ng kh\u00f4ng c\u00f3 Internet\" width=\"800\" height=\"600\" srcset=\"http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/wifi-viettel-khong-vao-duoc-mang-1.jpg 800w, http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/wifi-viettel-khong-vao-duoc-mang-1-533x400.jpg 533w, http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/wifi-viettel-khong-vao-duoc-mang-1-768x576.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-1932\" class=\"wp-caption-text\">WiFi Viettel k\u1ebft n\u1ed1i nh\u01b0ng kh\u00f4ng c\u00f3 Internet<\/figcaption><\/figure>\n<p><span style=\"font-family: 'times new roman', times, serif;\">WiFi Viettel kh\u00f4ng v\u00e0o \u0111\u01b0\u1ee3c m\u1ea1ng l\u00e0 t\u00ecnh tr\u1ea1ng \u0111i\u1ec7n tho\u1ea1i, m\u00e1y t\u00ednh ho\u1eb7c thi\u1ebft b\u1ecb kh\u00e1c \u0111\u00e3 k\u1ebft n\u1ed1i v\u1edbi t\u00ean m\u1ea1ng WiFi nh\u01b0ng kh\u00f4ng th\u1ec3 truy c\u1eadp website, \u1ee9ng d\u1ee5ng v\u00e0 d\u1ecbch v\u1ee5 tr\u1ef1c tuy\u1ebfn.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 hi\u1ec3n th\u1ecb m\u1ed9t trong c\u00e1c th\u00f4ng b\u00e1o nh\u01b0 \u201cKh\u00f4ng c\u00f3 Internet\u201d, \u201cConnected without Internet\u201d, \u201cNo Internet Access\u201d ho\u1eb7c bi\u1ec3u t\u01b0\u1ee3ng WiFi k\u00e8m d\u1ea5u ch\u1ea5m than. M\u1ed9t s\u1ed1 thi\u1ebft b\u1ecb kh\u00f4ng hi\u1ec7n c\u1ea3nh b\u00e1o nh\u01b0ng website li\u00ean t\u1ee5c b\u00e1o kh\u00f4ng th\u1ec3 k\u1ebft n\u1ed1i.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">\u0110\u1ec3 hi\u1ec3u hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y, c\u1ea7n ph\u00e2n bi\u1ec7t hai k\u1ebft n\u1ed1i ri\u00eang bi\u1ec7t:<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Thi\u1ebft b\u1ecb \u2192 Modem WiFi: \u0110\u00e2y l\u00e0 k\u1ebft n\u1ed1i n\u1ed9i b\u1ed9. Bi\u1ec3u t\u01b0\u1ee3ng WiFi xu\u1ea5t hi\u1ec7n khi \u0111i\u1ec7n tho\u1ea1i ho\u1eb7c m\u00e1y t\u00ednh \u0111\u00e3 li\u00ean l\u1ea1c \u0111\u01b0\u1ee3c v\u1edbi modem.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Modem \u2192 Internet: \u0110\u00e2y l\u00e0 k\u1ebft n\u1ed1i t\u1eeb modem qua \u0111\u01b0\u1eddng c\u00e1p quang Viettel \u0111\u1ebfn h\u1ec7 th\u1ed1ng m\u1ea1ng b\u00ean ngo\u00e0i.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">V\u00ec v\u1eady, thi\u1ebft b\u1ecb v\u1eabn c\u00f3 th\u1ec3 k\u1ebft n\u1ed1i \u0111\u01b0\u1ee3c v\u1edbi modem trong khi modem kh\u00f4ng c\u00f2n k\u1ebft n\u1ed1i Internet.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">C\u00f3 WiFi nh\u01b0ng kh\u00f4ng c\u00f3 Internet kh\u00e1c m\u1ea5t WiFi th\u1ebf n\u00e0o?<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">M\u1ea5t WiFi l\u00e0 khi thi\u1ebft b\u1ecb kh\u00f4ng nh\u00ecn th\u1ea5y t\u00ean m\u1ea1ng ho\u1eb7c kh\u00f4ng th\u1ec3 k\u1ebft n\u1ed1i v\u1edbi modem. Nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3 l\u00e0 modem m\u1ea5t ngu\u1ed3n, t\u00ednh n\u0103ng ph\u00e1t WiFi b\u1ecb t\u1eaft, m\u1eadt kh\u1ea9u sai ho\u1eb7c thi\u1ebft b\u1ecb \u0111\u1ee9ng qu\u00e1 xa b\u1ed9 ph\u00e1t.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">C\u00f3 WiFi nh\u01b0ng kh\u00f4ng c\u00f3 Internet l\u00e0 khi thi\u1ebft b\u1ecb \u0111\u00e3 k\u1ebft n\u1ed1i v\u1edbi modem nh\u01b0ng kh\u00f4ng th\u1ec3 truy c\u1eadp m\u1ea1ng b\u00ean ngo\u00e0i. Khi \u0111\u00f3, nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3 n\u1eb1m \u1edf \u0111\u01b0\u1eddng truy\u1ec1n c\u00e1p quang, modem, DNS, DHCP ho\u1eb7c thi\u1ebft b\u1ecb ng\u01b0\u1eddi d\u00f9ng.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">C\u00e1ch ph\u00e2n bi\u1ec7t nhanh l\u00e0 m\u1edf danh s\u00e1ch m\u1ea1ng WiFi v\u00e0 ki\u1ec3m tra tr\u1ea1ng th\u00e1i k\u1ebft n\u1ed1i. N\u1ebfu t\u00ean WiFi kh\u00f4ng xu\u1ea5t hi\u1ec7n, c\u1ea7n ki\u1ec3m tra ngu\u1ed3n v\u00e0 b\u1ed9 ph\u00e1t. N\u1ebfu t\u00ean WiFi v\u1eabn xu\u1ea5t hi\u1ec7n nh\u01b0ng m\u1ecdi website \u0111\u1ec1u kh\u00f4ng t\u1ea3i \u0111\u01b0\u1ee3c, c\u1ea7n ki\u1ec3m tra k\u1ebft n\u1ed1i Internet.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">V\u00ec sao bi\u1ec3u t\u01b0\u1ee3ng WiFi v\u1eabn \u0111\u1ea7y v\u1ea1ch nh\u01b0ng kh\u00f4ng c\u00f3 m\u1ea1ng?<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">S\u1ed1 v\u1ea1ch WiFi ph\u1ea3n \u00e1nh t\u01b0\u01a1ng \u0111\u1ed1i c\u01b0\u1eddng \u0111\u1ed9 t\u00edn hi\u1ec7u gi\u1eefa thi\u1ebft b\u1ecb v\u00e0 b\u1ed9 ph\u00e1t, kh\u00f4ng ph\u1ea3n \u00e1nh \u0111\u1ea7y \u0111\u1ee7 tr\u1ea1ng th\u00e1i \u0111\u01b0\u1eddng truy\u1ec1n Internet.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">\u0110i\u1ec7n tho\u1ea1i \u0111\u1ee9ng g\u1ea7n modem c\u00f3 th\u1ec3 hi\u1ec3n th\u1ecb \u0111\u1ea7y \u0111\u1ee7 v\u1ea1ch s\u00f3ng d\u00f9 \u0111\u01b0\u1eddng c\u00e1p quang \u0111\u00e3 m\u1ea5t t\u00edn hi\u1ec7u. T\u01b0\u01a1ng t\u1ef1, modem v\u1eabn c\u00f3 th\u1ec3 ph\u00e1t WiFi d\u00f9 \u0111\u00e8n LOS \u0111ang \u0111\u1ecf ho\u1eb7c k\u1ebft n\u1ed1i Internet ch\u01b0a \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Do \u0111\u00f3, kh\u00f4ng n\u00ean ch\u1ec9 nh\u00ecn s\u1ed1 v\u1ea1ch WiFi \u0111\u1ec3 k\u1ebft lu\u1eadn m\u1ea1ng Viettel \u0111ang ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">L\u00e0m sao bi\u1ebft l\u1ed7i n\u1eb1m \u1edf thi\u1ebft b\u1ecb hay modem?<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">H\u00e3y th\u1eed truy c\u1eadp Internet b\u1eb1ng \u00edt nh\u1ea5t hai thi\u1ebft b\u1ecb \u0111ang k\u1ebft n\u1ed1i c\u00f9ng m\u1ea1ng.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu ch\u1ec9 m\u1ed9t \u0111i\u1ec7n tho\u1ea1i kh\u00f4ng v\u00e0o \u0111\u01b0\u1ee3c m\u1ea1ng nh\u01b0ng m\u00e1y t\u00ednh v\u00e0 tivi v\u1eabn ho\u1ea1t \u0111\u1ed9ng, l\u1ed7i th\u01b0\u1eddng n\u1eb1m tr\u00ean \u0111i\u1ec7n tho\u1ea1i. N\u1ebfu t\u1ea5t c\u1ea3 thi\u1ebft b\u1ecb c\u00f9ng b\u00e1o kh\u00f4ng c\u00f3 Internet, c\u1ea7n ki\u1ec3m tra modem v\u00e0 \u0111\u01b0\u1eddng truy\u1ec1n.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Trong tr\u01b0\u1eddng h\u1ee3p m\u00e1y t\u00ednh d\u00f9ng d\u00e2y LAN \u0111\u01b0\u1ee3c nh\u01b0ng \u0111i\u1ec7n tho\u1ea1i d\u00f9ng WiFi kh\u00f4ng \u0111\u01b0\u1ee3c, \u0111\u01b0\u1eddng truy\u1ec1n c\u00f3 th\u1ec3 v\u1eabn b\u00ecnh th\u01b0\u1eddng v\u00e0 l\u1ed7i n\u1eb1m \u1edf ch\u1ee9c n\u0103ng ph\u00e1t WiFi. Ng\u01b0\u1ee3c l\u1ea1i, n\u1ebfu c\u1ea3 LAN v\u00e0 WiFi \u0111\u1ec1u kh\u00f4ng c\u00f3 Internet, kh\u1ea3 n\u0103ng l\u1ed7i n\u1eb1m \u1edf modem ho\u1eb7c \u0111\u01b0\u1eddng truy\u1ec1n cao h\u01a1n.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Vi_sao_co_WiFi_nhung_khong_co_Internet\"><\/span><span style=\"color: #ed1c24;\"><strong><span style=\"font-family: 'times new roman', times, serif;\">V\u00ec sao c\u00f3 WiFi nh\u01b0ng kh\u00f4ng c\u00f3 Internet?<\/span><\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure id=\"attachment_1933\" aria-describedby=\"caption-attachment-1933\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-1933 size-full\" title=\"Nguy\u00ean nh\u00e2n c\u00f3 WiFi nh\u01b0ng kh\u00f4ng c\u00f3 Internet\" src=\"http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/wifi-viettel-khong-vao-duoc-mang-2.jpg\" alt=\"Nguy\u00ean nh\u00e2n c\u00f3 WiFi nh\u01b0ng kh\u00f4ng c\u00f3 Internet\" width=\"800\" height=\"600\" srcset=\"http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/wifi-viettel-khong-vao-duoc-mang-2.jpg 800w, http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/wifi-viettel-khong-vao-duoc-mang-2-533x400.jpg 533w, http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/wifi-viettel-khong-vao-duoc-mang-2-768x576.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-1933\" class=\"wp-caption-text\">Nguy\u00ean nh\u00e2n c\u00f3 WiFi nh\u01b0ng kh\u00f4ng c\u00f3 Internet<\/figcaption><\/figure>\n<p><span style=\"font-family: 'times new roman', times, serif;\">T\u00ecnh tr\u1ea1ng n\u00e0y c\u00f3 th\u1ec3 xu\u1ea5t ph\u00e1t t\u1eeb b\u1ed1n nh\u00f3m nguy\u00ean nh\u00e2n ch\u00ednh: thi\u1ebft b\u1ecb ng\u01b0\u1eddi d\u00f9ng, modem WiFi, \u0111\u01b0\u1eddng truy\u1ec1n Viettel ho\u1eb7c d\u1ecbch v\u1ee5 \u0111ang truy c\u1eadp.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Modem m\u1ea5t k\u1ebft n\u1ed1i v\u1edbi \u0111\u01b0\u1eddng truy\u1ec1n Viettel<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Modem v\u1eabn \u0111\u01b0\u1ee3c c\u1ea5p ngu\u1ed3n v\u00e0 ph\u00e1t t\u00ean WiFi nh\u01b0ng c\u00f3 th\u1ec3 kh\u00f4ng c\u00f2n k\u1ebft n\u1ed1i v\u1edbi h\u1ec7 th\u1ed1ng Internet.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">D\u1ea5u hi\u1ec7u d\u1ec5 nh\u1eadn bi\u1ebft nh\u1ea5t l\u00e0 to\u00e0n b\u1ed9 thi\u1ebft b\u1ecb trong nh\u00e0 c\u00f9ng m\u1ea5t m\u1ea1ng. Khi quan s\u00e1t modem, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 th\u1ea5y \u0111\u00e8n LOS \u0111\u1ecf, PON kh\u00f4ng s\u00e1ng ho\u1eb7c \u0111\u00e8n Internet ho\u1ea1t \u0111\u1ed9ng b\u1ea5t th\u01b0\u1eddng.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu LOS \u0111\u1ecf, nguy\u00ean nh\u00e2n th\u01b0\u1eddng li\u00ean quan \u0111\u1ebfn d\u00e2y c\u00e1p quang, \u0111\u1ea7u n\u1ed1i ho\u1eb7c h\u1ea1 t\u1ea7ng. Ng\u01b0\u1eddi d\u00f9ng n\u00ean gi\u1eef nguy\u00ean \u0111\u1ea7u quang v\u00e0 li\u00ean h\u1ec7 k\u1ef9 thu\u1eadt thay v\u00ec thay \u0111\u1ed5i DNS ho\u1eb7c reset \u0111i\u1ec7n tho\u1ea1i.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Modem b\u1ecb treo ho\u1eb7c ho\u1ea1t \u0111\u1ed9ng qu\u00e1 l\u00e2u<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Modem ho\u1ea1t \u0111\u1ed9ng li\u00ean t\u1ee5c c\u00f3 th\u1ec3 g\u1eb7p l\u1ed7i t\u1ea1m th\u1eddi trong qu\u00e1 tr\u00ecnh x\u1eed l\u00fd k\u1ebft n\u1ed1i v\u00e0 c\u1ea5p \u0111\u1ecba ch\u1ec9 IP.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Bi\u1ec3u hi\u1ec7n th\u01b0\u1eddng g\u1eb7p l\u00e0 t\u00ean WiFi v\u1eabn xu\u1ea5t hi\u1ec7n nh\u01b0ng thi\u1ebft b\u1ecb kh\u00f4ng v\u00e0o \u0111\u01b0\u1ee3c Internet, m\u1ed9t s\u1ed1 m\u00e1y li\u00ean t\u1ee5c b\u1ecb m\u1ea5t m\u1ea1ng ho\u1eb7c k\u1ebft n\u1ed1i ch\u1ec9 tr\u1edf l\u1ea1i sau khi modem \u0111\u01b0\u1ee3c kh\u1edfi \u0111\u1ed9ng l\u1ea1i.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Viettel h\u01b0\u1edbng d\u1eabn ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 t\u1eaft modem b\u1eb1ng n\u00fat ON\/OFF, ch\u1edd kho\u1ea3ng 2\u20133 ph\u00fat r\u1ed3i b\u1eadt l\u1ea1i. Viettel c\u0169ng l\u01b0u \u00fd c\u1ea7n d\u00f9ng n\u00fat ngu\u1ed3n, kh\u00f4ng nh\u1ea7m v\u1edbi n\u00fat Reset.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Thi\u1ebft b\u1ecb kh\u00f4ng nh\u1eadn \u0111\u01b0\u1ee3c \u0111\u1ecba ch\u1ec9 IP t\u1eeb DHCP<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">DHCP l\u00e0 ch\u1ee9c n\u0103ng gi\u00fap modem t\u1ef1 \u0111\u1ed9ng c\u1ea5p \u0111\u1ecba ch\u1ec9 IP, c\u1ed5ng k\u1ebft n\u1ed1i v\u00e0 th\u00f4ng tin m\u1ea1ng cho \u0111i\u1ec7n tho\u1ea1i ho\u1eb7c m\u00e1y t\u00ednh.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu qu\u00e1 tr\u00ecnh c\u1ea5p ph\u00e1t g\u1eb7p l\u1ed7i, thi\u1ebft b\u1ecb v\u1eabn c\u00f3 th\u1ec3 k\u1ebft n\u1ed1i WiFi nh\u01b0ng kh\u00f4ng giao ti\u1ebfp \u0111\u00fang v\u1edbi modem ho\u1eb7c Internet. L\u1ed7i n\u00e0y th\u01b0\u1eddng x\u1ea3y ra tr\u00ean m\u1ed9t thi\u1ebft b\u1ecb v\u00e0 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c kh\u1eafc ph\u1ee5c b\u1eb1ng c\u00e1ch qu\u00ean m\u1ea1ng, k\u1ebft n\u1ed1i l\u1ea1i ho\u1eb7c kh\u1edfi \u0111\u1ed9ng thi\u1ebft b\u1ecb.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Tr\u00ean m\u00e1y t\u00ednh, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 th\u1ea5y tr\u1ea1ng th\u00e1i m\u1ea1ng kh\u00f4ng x\u00e1c \u0111\u1ecbnh ho\u1eb7c \u0111\u1ecba ch\u1ec9 IP kh\u00f4ng thu\u1ed9c d\u1ea3i m\u1ea1ng c\u1ee7a modem. Kh\u00f4ng n\u00ean t\u1ef1 nh\u1eadp IP th\u1ee7 c\u00f4ng n\u1ebfu ch\u01b0a x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c th\u00f4ng s\u1ed1 c\u1ea7n s\u1eed d\u1ee5ng.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Xung \u0111\u1ed9t \u0111\u1ecba ch\u1ec9 IP<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Xung \u0111\u1ed9t IP x\u1ea3y ra khi hai thi\u1ebft b\u1ecb trong c\u00f9ng m\u1ea1ng s\u1eed d\u1ee5ng c\u00f9ng m\u1ed9t \u0111\u1ecba ch\u1ec9. Khi \u0111\u00f3, m\u1ed9t ho\u1eb7c c\u1ea3 hai thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 m\u1ea5t k\u1ebft n\u1ed1i.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">T\u00ecnh tr\u1ea1ng n\u00e0y d\u1ec5 xu\u1ea5t hi\u1ec7n n\u1ebfu ng\u01b0\u1eddi d\u00f9ng t\u1eebng \u0111\u1eb7t IP t\u0129nh th\u1ee7 c\u00f4ng ho\u1eb7c h\u1ec7 th\u1ed1ng m\u1ea1ng c\u00f3 th\u00eam router, b\u1ed9 ph\u00e1t ph\u1ee5 \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh ch\u01b0a ph\u00f9 h\u1ee3p.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">C\u00e1ch x\u1eed l\u00fd c\u01a1 b\u1ea3n l\u00e0 \u0111\u01b0a IP v\u1ec1 t\u1ef1 \u0111\u1ed9ng, qu\u00ean m\u1ea1ng v\u00e0 k\u1ebft n\u1ed1i l\u1ea1i \u0111\u1ec3 modem c\u1ea5p \u0111\u1ecba ch\u1ec9 m\u1edbi.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Internet b\u1ecb l\u1ed7i DNS<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">DNS c\u00f3 nhi\u1ec7m v\u1ee5 chuy\u1ec3n t\u00ean mi\u1ec1n nh\u01b0 t\u00ean website th\u00e0nh \u0111\u1ecba ch\u1ec9 m\u00e1y ch\u1ee7 \u0111\u1ec3 thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 k\u1ebft n\u1ed1i.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Khi DNS g\u1eb7p l\u1ed7i, thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 k\u1ebft n\u1ed1i Internet nh\u01b0ng kh\u00f4ng m\u1edf \u0111\u01b0\u1ee3c website b\u1eb1ng t\u00ean mi\u1ec1n. M\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng v\u1eabn ho\u1ea1t \u0111\u1ed9ng trong khi tr\u00ecnh duy\u1ec7t b\u00e1o kh\u00f4ng t\u00ecm th\u1ea5y m\u00e1y ch\u1ee7.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">L\u1ed7i DNS th\u01b0\u1eddng b\u1ecb nh\u1ea7m v\u1edbi m\u1ea5t Internet ho\u00e0n to\u00e0n. \u0110\u1ec3 ki\u1ec3m tra, ng\u01b0\u1eddi d\u00f9ng n\u00ean th\u1eed nhi\u1ec1u website v\u00e0 \u1ee9ng d\u1ee5ng kh\u00e1c nhau. N\u1ebfu ch\u1ec9 m\u1ed9t s\u1ed1 trang kh\u00f4ng m\u1edf \u0111\u01b0\u1ee3c, nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3 n\u1eb1m \u1edf DNS, tr\u00ecnh duy\u1ec7t ho\u1eb7c ch\u00ednh website \u0111\u00f3.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">VPN ho\u1eb7c proxy l\u00e0m gi\u00e1n \u0111o\u1ea1n k\u1ebft n\u1ed1i<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">VPN v\u00e0 proxy thay \u0111\u1ed5i \u0111\u01b0\u1eddng \u0111i c\u1ee7a d\u1eef li\u1ec7u. N\u1ebfu m\u00e1y ch\u1ee7 VPN ng\u1eebng ho\u1ea1t \u0111\u1ed9ng, \u1ee9ng d\u1ee5ng c\u1ea5u h\u00ecnh sai ho\u1eb7c g\u00f3i d\u1ecbch v\u1ee5 h\u1ebft h\u1ea1n, \u0111i\u1ec7n tho\u1ea1i c\u00f3 th\u1ec3 b\u00e1o \u0111\u00e3 k\u1ebft n\u1ed1i WiFi nh\u01b0ng kh\u00f4ng truy c\u1eadp \u0111\u01b0\u1ee3c Internet.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">H\u00e3y t\u1eaft t\u1ea1m VPN v\u00e0 proxy r\u1ed3i th\u1eed l\u1ea1i. N\u1ebfu m\u1ea1ng ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng sau khi t\u1eaft, v\u1ea5n \u0111\u1ec1 kh\u00f4ng n\u1eb1m \u1edf \u0111\u01b0\u1eddng truy\u1ec1n Viettel.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">C\u1ea5u h\u00ecnh IPv4 ho\u1eb7c IPv6 ch\u01b0a ph\u00f9 h\u1ee3p<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">IPv4 v\u00e0 IPv6 l\u00e0 hai giao th\u1ee9c \u0111\u1ecba ch\u1ec9 m\u1ea1ng. Th\u00f4ng th\u01b0\u1eddng, modem v\u00e0 thi\u1ebft b\u1ecb s\u1ebd t\u1ef1 l\u1ef1a ch\u1ecdn c\u1ea5u h\u00ecnh ph\u00f9 h\u1ee3p.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu thi\u1ebft b\u1ecb b\u1ecb \u0111\u1eb7t IP, DNS ho\u1eb7c gateway th\u1ee7 c\u00f4ng kh\u00f4ng ch\u00ednh x\u00e1c, k\u1ebft n\u1ed1i c\u00f3 th\u1ec3 gi\u00e1n \u0111o\u1ea1n. M\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p ch\u1ec9 m\u1ed9t website ho\u1eb7c \u1ee9ng d\u1ee5ng g\u1eb7p l\u1ed7i do c\u00e1ch d\u1ecbch v\u1ee5 x\u1eed l\u00fd IPv4 v\u00e0 IPv6 kh\u00e1c nhau.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Ng\u01b0\u1eddi d\u00f9ng ph\u1ed5 th\u00f4ng n\u00ean \u0111\u1ec3 IP v\u00e0 DNS \u1edf ch\u1ebf \u0111\u1ed9 t\u1ef1 \u0111\u1ed9ng. Kh\u00f4ng n\u00ean t\u1eaft IPv6 ho\u1eb7c ch\u1ec9nh th\u00f4ng s\u1ed1 modem n\u1ebfu ch\u01b0a x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c nguy\u00ean nh\u00e2n.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Modem qu\u00e1 n\u00f3ng ho\u1eb7c ngu\u1ed3n \u0111i\u1ec7n kh\u00f4ng \u1ed5n \u0111\u1ecbnh<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Modem \u0111\u1eb7t trong t\u1ee7 k\u00edn, g\u1ea7n thi\u1ebft b\u1ecb t\u1ecfa nhi\u1ec7t ho\u1eb7c ho\u1ea1t \u0111\u1ed9ng trong m\u00f4i tr\u01b0\u1eddng n\u00f3ng c\u00f3 th\u1ec3 gi\u1ea3m \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Ngu\u1ed3n \u0111i\u1ec7n y\u1ebfu, \u1ed5 c\u1eafm l\u1ecfng ho\u1eb7c b\u1ed9 chuy\u1ec3n ngu\u1ed3n xu\u1ed1ng c\u1ea5p c\u0169ng c\u00f3 th\u1ec3 l\u00e0m modem t\u1ef1 kh\u1edfi \u0111\u1ed9ng l\u1ea1i, m\u1ea5t Internet ho\u1eb7c ho\u1ea1t \u0111\u1ed9ng kh\u00f4ng li\u00ean t\u1ee5c.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu modem n\u00f3ng b\u1ea5t th\u01b0\u1eddng, c\u00f3 m\u00f9i l\u1ea1 ho\u1eb7c \u0111\u00e8n ngu\u1ed3n ch\u1edbp t\u1eaft, n\u00ean ng\u1eaft ngu\u1ed3n v\u00e0 y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt ki\u1ec3m tra. Kh\u00f4ng t\u1ef1 m\u1edf v\u1ecf thi\u1ebft b\u1ecb.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">D\u00e2y c\u00e1p quang ho\u1eb7c d\u00e2y LAN b\u1ecb l\u1ed7i<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">D\u00e2y c\u00e1p quang b\u1ecb g\u1eadp, \u0111\u1ee9t ho\u1eb7c \u0111\u1ea7u n\u1ed1i suy hao c\u00f3 th\u1ec3 l\u00e0m modem m\u1ea5t t\u00edn hi\u1ec7u Internet nh\u01b0ng v\u1eabn ph\u00e1t WiFi.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu ch\u1ec9 m\u00e1y t\u00ednh d\u00f9ng d\u00e2y kh\u00f4ng c\u00f3 m\u1ea1ng trong khi WiFi v\u1eabn ho\u1ea1t \u0111\u1ed9ng, nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3 n\u1eb1m \u1edf d\u00e2y LAN, \u0111\u1ea7u c\u1eafm ho\u1eb7c c\u1ed5ng m\u1ea1ng.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Viettel khuy\u1ebfn ngh\u1ecb ki\u1ec3m tra d\u00e2y LAN, c\u00e1p quang, \u0111\u1ea7u c\u1eafm v\u00e0 tr\u1ea1ng th\u00e1i \u0111\u00e8n modem khi x\u1eed l\u00fd s\u1ef1 c\u1ed1 k\u1ebft n\u1ed1i.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Viettel \u0111ang b\u1ea3o tr\u00ec ho\u1eb7c c\u00f3 s\u1ef1 c\u1ed1 khu v\u1ef1c<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu nhi\u1ec1u gia \u0111\u00ecnh g\u1ea7n nhau c\u00f9ng m\u1ea5t Internet, nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3 n\u1eb1m \u1edf h\u1ed9p c\u00e1p, tuy\u1ebfn truy\u1ec1n d\u1eabn ho\u1eb7c h\u1ec7 th\u1ed1ng khu v\u1ef1c.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y, thay \u0111\u1ed5i DNS, \u0111\u1ed5i m\u1eadt kh\u1ea9u ho\u1eb7c reset modem th\u01b0\u1eddng kh\u00f4ng c\u00f3 t\u00e1c d\u1ee5ng. Ng\u01b0\u1eddi d\u00f9ng n\u00ean ki\u1ec3m tra th\u00f4ng tin d\u1ecbch v\u1ee5 ho\u1eb7c li\u00ean h\u1ec7 t\u1ed5ng \u0111\u00e0i \u0111\u1ec3 x\u00e1c nh\u1eadn.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Website ho\u1eb7c \u1ee9ng d\u1ee5ng \u0111ang g\u1eb7p l\u1ed7i<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu ch\u1ec9 m\u1ed9t website kh\u00f4ng m\u1edf \u0111\u01b0\u1ee3c nh\u01b0ng c\u00e1c d\u1ecbch v\u1ee5 kh\u00e1c v\u1eabn ho\u1ea1t \u0111\u1ed9ng, \u0111\u01b0\u1eddng truy\u1ec1n Viettel ch\u01b0a ch\u1eafc c\u00f3 v\u1ea5n \u0111\u1ec1.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Website c\u00f3 th\u1ec3 \u0111ang b\u1ea3o tr\u00ec, m\u00e1y ch\u1ee7 qu\u00e1 t\u1ea3i ho\u1eb7c \u1ee9ng d\u1ee5ng g\u1eb7p l\u1ed7i phi\u00ean \u0111\u0103ng nh\u1eadp. H\u00e3y th\u1eed tr\u00ecnh duy\u1ec7t kh\u00e1c, ch\u1ebf \u0111\u1ed9 ri\u00eang t\u01b0 ho\u1eb7c m\u1ed9t k\u1ebft n\u1ed1i kh\u00e1c \u0111\u1ec3 so s\u00e1nh.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Bang_chan_doan_nhanh_khi_WiFi_bao_ket_noi_khong_Internet\"><\/span><span style=\"color: #ed1c24;\"><strong><span style=\"font-family: 'times new roman', times, serif;\">B\u1ea3ng ch\u1ea9n \u0111o\u00e1n nhanh khi WiFi b\u00e1o k\u1ebft n\u1ed1i kh\u00f4ng Internet<\/span><\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<table dir=\"ltr\" style=\"width: 55.097%;\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\" data-sheets-root=\"1\" data-sheets-baot=\"1\">\n<colgroup>\n<col width=\"267\" \/>\n<col width=\"283\" \/>\n<col width=\"304\" \/><\/colgroup>\n<tbody>\n<tr>\n<td style=\"width: 31.1475%;\"><span style=\"font-family: 'times new roman', times, serif;\">Hi\u1ec7n t\u01b0\u1ee3ng<\/span><\/td>\n<td style=\"width: 33.0211%;\"><span style=\"font-family: 'times new roman', times, serif;\">Nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3<\/span><\/td>\n<td style=\"width: 55.6206%;\"><span style=\"font-family: 'times new roman', times, serif;\">C\u00e1ch ki\u1ec3m tra \u0111\u1ea7u ti\u00ean<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.1475%;\"><span style=\"font-family: 'times new roman', times, serif;\">T\u1ea5t c\u1ea3 thi\u1ebft b\u1ecb kh\u00f4ng c\u00f3 Internet<\/span><\/td>\n<td style=\"width: 33.0211%;\"><span style=\"font-family: 'times new roman', times, serif;\">Modem ho\u1eb7c \u0111\u01b0\u1eddng truy\u1ec1n l\u1ed7i<\/span><\/td>\n<td style=\"width: 55.6206%;\"><span style=\"font-family: 'times new roman', times, serif;\">Quan s\u00e1t PON, LOS v\u00e0 Internet<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.1475%;\"><span style=\"font-family: 'times new roman', times, serif;\">Ch\u1ec9 m\u1ed9t \u0111i\u1ec7n tho\u1ea1i m\u1ea5t m\u1ea1ng<\/span><\/td>\n<td style=\"width: 33.0211%;\"><span style=\"font-family: 'times new roman', times, serif;\">IP, DNS, VPN ho\u1eb7c c\u1ea5u h\u00ecnh thi\u1ebft b\u1ecb<\/span><\/td>\n<td style=\"width: 55.6206%;\"><span style=\"font-family: 'times new roman', times, serif;\">Qu\u00ean m\u1ea1ng v\u00e0 k\u1ebft n\u1ed1i l\u1ea1i<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.1475%;\"><span style=\"font-family: 'times new roman', times, serif;\">WiFi \u0111\u1ea7y v\u1ea1ch nh\u01b0ng kh\u00f4ng m\u1edf \u0111\u01b0\u1ee3c website<\/span><\/td>\n<td style=\"width: 33.0211%;\"><span style=\"font-family: 'times new roman', times, serif;\">DNS ho\u1eb7c modem m\u1ea5t Internet<\/span><\/td>\n<td style=\"width: 55.6206%;\"><span style=\"font-family: 'times new roman', times, serif;\">Th\u1eed nhi\u1ec1u \u1ee9ng d\u1ee5ng v\u00e0 thi\u1ebft b\u1ecb<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.1475%;\"><span style=\"font-family: 'times new roman', times, serif;\">LOS \u0111\u1ecf, PON t\u1eaft<\/span><\/td>\n<td style=\"width: 33.0211%;\"><span style=\"font-family: 'times new roman', times, serif;\">M\u1ea5t t\u00edn hi\u1ec7u c\u00e1p quang<\/span><\/td>\n<td style=\"width: 55.6206%;\"><span style=\"font-family: 'times new roman', times, serif;\">B\u00e1o k\u1ef9 thu\u1eadt<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.1475%;\"><span style=\"font-family: 'times new roman', times, serif;\">PON xanh, LOS t\u1eaft nh\u01b0ng kh\u00f4ng c\u00f3 Internet<\/span><\/td>\n<td style=\"width: 33.0211%;\"><span style=\"font-family: 'times new roman', times, serif;\">Modem treo ho\u1eb7c phi\u00ean k\u1ebft n\u1ed1i l\u1ed7i<\/span><\/td>\n<td style=\"width: 55.6206%;\"><span style=\"font-family: 'times new roman', times, serif;\">Kh\u1edfi \u0111\u1ed9ng l\u1ea1i modem<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.1475%;\"><span style=\"font-family: 'times new roman', times, serif;\">LAN d\u00f9ng \u0111\u01b0\u1ee3c nh\u01b0ng WiFi kh\u00f4ng \u0111\u01b0\u1ee3c<\/span><\/td>\n<td style=\"width: 33.0211%;\"><span style=\"font-family: 'times new roman', times, serif;\">B\u1ed9 ph\u00e1t WiFi ho\u1eb7c c\u1ea5u h\u00ecnh WLAN l\u1ed7i<\/span><\/td>\n<td style=\"width: 55.6206%;\"><span style=\"font-family: 'times new roman', times, serif;\">Th\u1eed \u0111\u1ee9ng g\u1ea7n modem<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.1475%;\"><span style=\"font-family: 'times new roman', times, serif;\">WiFi d\u00f9ng \u0111\u01b0\u1ee3c nh\u01b0ng LAN kh\u00f4ng \u0111\u01b0\u1ee3c<\/span><\/td>\n<td style=\"width: 33.0211%;\"><span style=\"font-family: 'times new roman', times, serif;\">D\u00e2y LAN ho\u1eb7c c\u1ed5ng m\u1ea1ng l\u1ed7i<\/span><\/td>\n<td style=\"width: 55.6206%;\"><span style=\"font-family: 'times new roman', times, serif;\">\u0110\u1ed5i d\u00e2y v\u00e0 c\u1ed5ng LAN<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.1475%;\"><span style=\"font-family: 'times new roman', times, serif;\">Ch\u1ec9 tr\u00ecnh duy\u1ec7t kh\u00f4ng v\u00e0o \u0111\u01b0\u1ee3c<\/span><\/td>\n<td style=\"width: 33.0211%;\"><span style=\"font-family: 'times new roman', times, serif;\">DNS, cache ho\u1eb7c ti\u1ec7n \u00edch m\u1edf r\u1ed9ng<\/span><\/td>\n<td style=\"width: 55.6206%;\"><span style=\"font-family: 'times new roman', times, serif;\">\u0110\u1ed5i tr\u00ecnh duy\u1ec7t<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.1475%;\"><span style=\"font-family: 'times new roman', times, serif;\">T\u1eaft VPN th\u00ec v\u00e0o m\u1ea1ng \u0111\u01b0\u1ee3c<\/span><\/td>\n<td style=\"width: 33.0211%;\"><span style=\"font-family: 'times new roman', times, serif;\">VPN ho\u1eb7c proxy l\u1ed7i<\/span><\/td>\n<td style=\"width: 55.6206%;\"><span style=\"font-family: 'times new roman', times, serif;\">Ki\u1ec3m tra l\u1ea1i \u1ee9ng d\u1ee5ng VPN<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.1475%;\"><span style=\"font-family: 'times new roman', times, serif;\">Modem t\u1ef1 kh\u1edfi \u0111\u1ed9ng<\/span><\/td>\n<td style=\"width: 33.0211%;\"><span style=\"font-family: 'times new roman', times, serif;\">Ngu\u1ed3n y\u1ebfu, qu\u00e1 nhi\u1ec7t ho\u1eb7c ph\u1ea7n c\u1ee9ng l\u1ed7i<\/span><\/td>\n<td style=\"width: 55.6206%;\"><span style=\"font-family: 'times new roman', times, serif;\">Ki\u1ec3m tra \u1ed5 \u0111i\u1ec7n v\u00e0 b\u1ed9 ngu\u1ed3n<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.1475%;\"><span style=\"font-family: 'times new roman', times, serif;\">Sau khi \u0111\u1eb7t IP t\u0129nh th\u00ec m\u1ea5t m\u1ea1ng<\/span><\/td>\n<td style=\"width: 33.0211%;\"><span style=\"font-family: 'times new roman', times, serif;\">Sai IP, gateway ho\u1eb7c DNS<\/span><\/td>\n<td style=\"width: 55.6206%;\"><span style=\"font-family: 'times new roman', times, serif;\">Chuy\u1ec3n v\u1ec1 t\u1ef1 \u0111\u1ed9ng<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 31.1475%;\"><span style=\"font-family: 'times new roman', times, serif;\">Nhi\u1ec1u nh\u00e0 c\u00f9ng m\u1ea5t m\u1ea1ng<\/span><\/td>\n<td style=\"width: 33.0211%;\"><span style=\"font-family: 'times new roman', times, serif;\">S\u1ef1 c\u1ed1 h\u1ea1 t\u1ea7ng khu v\u1ef1c<\/span><\/td>\n<td style=\"width: 55.6206%;\"><span style=\"font-family: 'times new roman', times, serif;\">Li\u00ean h\u1ec7 Viettel<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-family: 'times new roman', times, serif;\">B\u1ea3ng tr\u00ean gi\u00fap khoanh v\u00f9ng nguy\u00ean nh\u00e2n ban \u0111\u1ea7u. Ng\u01b0\u1eddi d\u00f9ng v\u1eabn n\u00ean th\u1ef1c hi\u1ec7n c\u00e1c b\u01b0\u1edbc ki\u1ec3m tra theo \u0111\u00fang th\u1ee9 t\u1ef1 tr\u01b0\u1edbc khi thay \u0111\u1ed5i c\u1ea5u h\u00ecnh n\u00e2ng cao.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cach_khac_phuc_WiFi_Viettel_khong_vao_duoc_mang_theo_8_buoc\"><\/span><span style=\"color: #ed1c24;\"><strong><span style=\"font-family: 'times new roman', times, serif;\">C\u00e1ch kh\u1eafc ph\u1ee5c WiFi Viettel kh\u00f4ng v\u00e0o \u0111\u01b0\u1ee3c m\u1ea1ng theo 8 b\u01b0\u1edbc<\/span><\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure id=\"attachment_1935\" aria-describedby=\"caption-attachment-1935\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-1935 size-full\" title=\"Kh\u1eafc ph\u1ee5c WiFi Viettel kh\u00f4ng v\u00e0o m\u1ea1ng theo 8 b\u01b0\u1edbc\" src=\"http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/wifi-viettel-khong-vao-duoc-mang-4.jpg\" alt=\"Kh\u1eafc ph\u1ee5c WiFi Viettel kh\u00f4ng v\u00e0o m\u1ea1ng theo 8 b\u01b0\u1edbc\" width=\"800\" height=\"600\" srcset=\"http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/wifi-viettel-khong-vao-duoc-mang-4.jpg 800w, http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/wifi-viettel-khong-vao-duoc-mang-4-533x400.jpg 533w, http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/wifi-viettel-khong-vao-duoc-mang-4-768x576.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-1935\" class=\"wp-caption-text\">Kh\u1eafc ph\u1ee5c WiFi Viettel kh\u00f4ng v\u00e0o m\u1ea1ng theo 8 b\u01b0\u1edbc<\/figcaption><\/figure>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">B\u01b0\u1edbc 1: Th\u1eed tr\u00ean m\u1ed9t thi\u1ebft b\u1ecb kh\u00e1c<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">H\u00e3y m\u1edf Internet b\u1eb1ng m\u1ed9t \u0111i\u1ec7n tho\u1ea1i, m\u00e1y t\u00ednh ho\u1eb7c tivi kh\u00e1c \u0111ang k\u1ebft n\u1ed1i c\u00f9ng WiFi.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu thi\u1ebft b\u1ecb th\u1ee9 hai v\u1eabn truy c\u1eadp b\u00ecnh th\u01b0\u1eddng, \u0111\u01b0\u1eddng truy\u1ec1n v\u00e0 modem c\u00f3 kh\u1ea3 n\u0103ng \u0111ang ho\u1ea1t \u0111\u1ed9ng. Khi \u0111\u00f3, c\u1ea7n t\u1eadp trung x\u1eed l\u00fd thi\u1ebft b\u1ecb g\u1eb7p l\u1ed7i.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu t\u1ea5t c\u1ea3 thi\u1ebft b\u1ecb c\u00f9ng kh\u00f4ng v\u00e0o \u0111\u01b0\u1ee3c m\u1ea1ng, chuy\u1ec3n sang ki\u1ec3m tra modem.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">B\u01b0\u1edbc 2: Ki\u1ec3m tra nhi\u1ec1u website v\u00e0 \u1ee9ng d\u1ee5ng<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">M\u1edf m\u1ed9t v\u00e0i website ph\u1ed5 bi\u1ebfn, \u1ee9ng d\u1ee5ng nh\u1eafn tin v\u00e0 d\u1ecbch v\u1ee5 video \u0111\u1ec3 so s\u00e1nh.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu m\u1ecdi d\u1ecbch v\u1ee5 \u0111\u1ec1u kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng, k\u1ebft n\u1ed1i Internet c\u00f3 th\u1ec3 \u0111\u00e3 m\u1ea5t. N\u1ebfu ch\u1ec9 m\u1ed9t website l\u1ed7i, c\u1ea7n ki\u1ec3m tra tr\u00ecnh duy\u1ec7t, DNS ho\u1eb7c tr\u1ea1ng th\u00e1i c\u1ee7a website \u0111\u00f3.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">B\u01b0\u1edbc n\u00e0y gi\u00fap tr\u00e1nh b\u00e1o h\u1ecfng \u0111\u01b0\u1eddng truy\u1ec1n ch\u1ec9 v\u00ec m\u1ed9t m\u00e1y ch\u1ee7 b\u00ean ngo\u00e0i \u0111ang gi\u00e1n \u0111o\u1ea1n.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">B\u01b0\u1edbc 3: Quan s\u00e1t \u0111\u00e8n modem<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Ki\u1ec3m tra \u0111\u00e8n Power, PON, LOS, Internet, WLAN v\u00e0 LAN.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Power c\u1ea7n s\u00e1ng \u1ed5n \u0111\u1ecbnh. PON th\u01b0\u1eddng s\u00e1ng khi modem nh\u1eadn t\u00edn hi\u1ec7u quang, c\u00f2n LOS th\u00f4ng th\u01b0\u1eddng ph\u1ea3i t\u1eaft. N\u1ebfu LOS \u0111\u1ecf ho\u1eb7c nh\u1ea5p nh\u00e1y \u0111\u1ecf, c\u1ea7n nghi ng\u1edd l\u1ed7i \u0111\u01b0\u1eddng c\u00e1p quang.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">\u0110\u00e8n WLAN cho bi\u1ebft ch\u1ee9c n\u0103ng ph\u00e1t WiFi \u0111ang b\u1eadt. \u0110\u00e8n n\u00e0y s\u00e1ng kh\u00f4ng \u0111\u1ed3ng ngh\u0129a modem \u0111\u00e3 k\u1ebft n\u1ed1i Internet.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Xem th\u00eam h\u01b0\u1edbng d\u1eabn: \u0110\u00e8n LOS \u0111\u1ecf Viettel l\u00e0 l\u1ed7i g\u00ec?.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">B\u01b0\u1edbc 4: Kh\u1edfi \u0111\u1ed9ng l\u1ea1i modem \u0111\u00fang c\u00e1ch<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Nh\u1ea5n n\u00fat ON\/OFF \u0111\u1ec3 t\u1eaft modem, ch\u1edd kho\u1ea3ng 2\u20133 ph\u00fat r\u1ed3i b\u1eadt l\u1ea1i. Sau khi b\u1eadt, ch\u1edd c\u00e1c \u0111\u00e8n \u1ed5n \u0111\u1ecbnh tr\u01b0\u1edbc khi ki\u1ec3m tra.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Kh\u00f4ng t\u1eaft b\u1eadt li\u00ean t\u1ee5c v\u00ec modem c\u1ea7n th\u1eddi gian nh\u1eadn t\u00edn hi\u1ec7u v\u00e0 thi\u1ebft l\u1eadp k\u1ebft n\u1ed1i. Kh\u00f4ng nh\u1ea5n Reset trong b\u01b0\u1edbc n\u00e0y.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Theo h\u01b0\u1edbng d\u1eabn c\u1ee7a Viettel, modem c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c kh\u1edfi \u0111\u1ed9ng l\u1ea1i t\u1eeb ph\u1ea7n qu\u1ea3n l\u00fd modem tr\u00ean My Viettel \u0111\u1ed1i v\u1edbi t\u00e0i kho\u1ea3n v\u00e0 thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">B\u01b0\u1edbc 5: Qu\u00ean m\u1ea1ng WiFi v\u00e0 k\u1ebft n\u1ed1i l\u1ea1i<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Tr\u00ean \u0111i\u1ec7n tho\u1ea1i ho\u1eb7c m\u00e1y t\u00ednh, m\u1edf ph\u1ea7n c\u00e0i \u0111\u1eb7t WiFi, ch\u1ecdn m\u1ea1ng \u0111ang s\u1eed d\u1ee5ng v\u00e0 nh\u1ea5n \u201cQu\u00ean m\u1ea1ng\u201d.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Sau \u0111\u00f3 t\u00ecm l\u1ea1i t\u00ean WiFi, nh\u1eadp \u0111\u00fang m\u1eadt kh\u1ea9u v\u00e0 ki\u1ec3m tra k\u1ebft n\u1ed1i. Thao t\u00e1c n\u00e0y l\u00e0m m\u1edbi th\u00f4ng tin x\u00e1c th\u1ef1c v\u00e0 y\u00eau c\u1ea7u modem c\u1ea5p l\u1ea1i c\u1ea5u h\u00ecnh m\u1ea1ng.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu ch\u1ec9 m\u1ed9t thi\u1ebft b\u1ecb g\u1eb7p l\u1ed7i, \u0111\u00e2y l\u00e0 m\u1ed9t trong nh\u1eefng b\u01b0\u1edbc n\u00ean th\u1eed tr\u01b0\u1edbc khi thay \u0111\u1ed5i DNS ho\u1eb7c IP.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">B\u01b0\u1edbc 6: T\u1eaft VPN, proxy v\u00e0 DNS th\u1ee7 c\u00f4ng<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">T\u1eaft c\u00e1c \u1ee9ng d\u1ee5ng VPN, ph\u1ea7n m\u1ec1m \u0111\u1ed5i IP ho\u1eb7c c\u1ea5u h\u00ecnh proxy \u0111ang ho\u1ea1t \u0111\u1ed9ng.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Ti\u1ebfp theo, ki\u1ec3m tra IP v\u00e0 DNS. Ng\u01b0\u1eddi d\u00f9ng ph\u1ed5 th\u00f4ng n\u00ean ch\u1ecdn ch\u1ebf \u0111\u1ed9 t\u1ef1 \u0111\u1ed9ng \u0111\u1ec3 thi\u1ebft b\u1ecb nh\u1eadn th\u00f4ng tin t\u1eeb modem.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu tr\u01b0\u1edbc \u0111\u00f3 \u0111\u00e3 nh\u1eadp DNS ho\u1eb7c \u0111\u1ecba ch\u1ec9 IP th\u1ee7 c\u00f4ng, h\u00e3y ghi l\u1ea1i th\u00f4ng s\u1ed1 c\u0169 tr\u01b0\u1edbc khi thay \u0111\u1ed5i \u0111\u1ec3 c\u00f3 th\u1ec3 kh\u00f4i ph\u1ee5c khi c\u1ea7n.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">B\u01b0\u1edbc 7: Kh\u1edfi \u0111\u1ed9ng l\u1ea1i thi\u1ebft b\u1ecb<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Kh\u1edfi \u0111\u1ed9ng l\u1ea1i \u0111i\u1ec7n tho\u1ea1i ho\u1eb7c m\u00e1y t\u00ednh \u0111\u1ec3 l\u00e0m m\u1edbi card m\u1ea1ng v\u00e0 c\u00e1c d\u1ecbch v\u1ee5 k\u1ebft n\u1ed1i.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Tr\u00ean m\u00e1y t\u00ednh, c\u1ea7n ki\u1ec3m tra th\u00eam ch\u1ebf \u0111\u1ed9 m\u00e1y bay, driver WiFi v\u00e0 tr\u1ea1ng th\u00e1i d\u00e2y LAN. Tr\u00ean \u0111i\u1ec7n tho\u1ea1i, c\u00f3 th\u1ec3 b\u1eadt ch\u1ebf \u0111\u1ed9 m\u00e1y bay trong v\u00e0i gi\u00e2y r\u1ed3i t\u1eaft tr\u01b0\u1edbc khi k\u1ebft n\u1ed1i l\u1ea1i.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu thi\u1ebft b\u1ecb v\u1eabn kh\u00f4ng truy c\u1eadp \u0111\u01b0\u1ee3c b\u1ea5t k\u1ef3 m\u1ea1ng WiFi n\u00e0o kh\u00e1c, l\u1ed7i c\u00f3 th\u1ec3 n\u1eb1m \u1edf ph\u1ea7n m\u1ec1m ho\u1eb7c ph\u1ea7n c\u1ee9ng c\u1ee7a thi\u1ebft b\u1ecb.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">B\u01b0\u1edbc 8: Ki\u1ec3m tra b\u1eb1ng d\u00e2y LAN v\u00e0 b\u00e1o h\u1ed7 tr\u1ee3<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu c\u00f3 m\u00e1y t\u00ednh v\u00e0 d\u00e2y LAN, h\u00e3y k\u1ebft n\u1ed1i tr\u1ef1c ti\u1ebfp v\u1edbi modem.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Khi LAN ho\u1ea1t \u0111\u1ed9ng nh\u01b0ng WiFi kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng, c\u1ea7n ki\u1ec3m tra b\u1ed9 ph\u00e1t kh\u00f4ng d\u00e2y. N\u1ebfu c\u1ea3 LAN v\u00e0 WiFi \u0111\u1ec1u kh\u00f4ng c\u00f3 Internet, nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3 n\u1eb1m \u1edf modem, c\u1ea5u h\u00ecnh \u0111\u01b0\u1eddng truy\u1ec1n ho\u1eb7c h\u1ea1 t\u1ea7ng Viettel.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Sau khi \u0111\u00e3 ho\u00e0n th\u00e0nh c\u00e1c b\u01b0\u1edbc tr\u00ean nh\u01b0ng l\u1ed7i v\u1eabn c\u00f2n, h\u00e3y chu\u1ea9n b\u1ecb tr\u1ea1ng th\u00e1i \u0111\u00e8n modem, s\u1ed1 \u0111i\u1ec7n tho\u1ea1i \u0111\u0103ng k\u00fd v\u00e0 \u0111\u1ecba ch\u1ec9 l\u1eafp \u0111\u1eb7t \u0111\u1ec3 b\u00e1o k\u1ef9 thu\u1eadt.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cach_xu_ly_theo_tung_nguyen_nhan\"><\/span><span style=\"color: #ed1c24;\"><strong><span style=\"font-family: 'times new roman', times, serif;\">C\u00e1ch x\u1eed l\u00fd theo t\u1eebng nguy\u00ean nh\u00e2n<\/span><\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure id=\"attachment_1936\" aria-describedby=\"caption-attachment-1936\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-1936\" src=\"http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/wifi-viettel-khong-vao-duoc-mang-5.jpg\" alt=\"C\u00e1ch x\u1eed l\u00fd WiFi Viettel theo t\u1eebng nguy\u00ean nh\u00e2n\" width=\"800\" height=\"600\" title=\"\" srcset=\"http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/wifi-viettel-khong-vao-duoc-mang-5.jpg 800w, http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/wifi-viettel-khong-vao-duoc-mang-5-533x400.jpg 533w, http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/wifi-viettel-khong-vao-duoc-mang-5-768x576.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-1936\" class=\"wp-caption-text\">C\u00e1ch x\u1eed l\u00fd WiFi Viettel theo t\u1eebng nguy\u00ean nh\u00e2n<\/figcaption><\/figure>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Kh\u1eafc ph\u1ee5c l\u1ed7i DNS<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Tr\u01b0\u1edbc ti\u00ean, th\u1eed tr\u00ecnh duy\u1ec7t kh\u00e1c v\u00e0 m\u1edf nhi\u1ec1u website. Sau \u0111\u00f3 t\u1eaft VPN, proxy v\u00e0 \u0111\u01b0a DNS v\u1ec1 ch\u1ebf \u0111\u1ed9 t\u1ef1 \u0111\u1ed9ng.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu thi\u1ebft b\u1ecb t\u1eebng \u0111\u01b0\u1ee3c nh\u1eadp DNS th\u1ee7 c\u00f4ng, c\u1ea5u h\u00ecnh \u0111\u00f3 c\u00f3 th\u1ec3 kh\u00f4ng c\u00f2n ho\u1ea1t \u0111\u1ed9ng ho\u1eb7c b\u1ecb nh\u1eadp sai. Sau khi chuy\u1ec3n v\u1ec1 t\u1ef1 \u0111\u1ed9ng, h\u00e3y qu\u00ean m\u1ea1ng WiFi r\u1ed3i k\u1ebft n\u1ed1i l\u1ea1i.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Kh\u00f4ng n\u00ean thay \u0111\u1ed5i DNS tr\u00ean modem cho to\u00e0n b\u1ed9 gia \u0111\u00ecnh n\u1ebfu l\u1ed7i ch\u1ec9 xu\u1ea5t hi\u1ec7n tr\u00ean m\u1ed9t thi\u1ebft b\u1ecb.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Kh\u1eafc ph\u1ee5c l\u1ed7i DHCP v\u00e0 xung \u0111\u1ed9t IP<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Ch\u1ecdn qu\u00ean m\u1ea1ng WiFi, kh\u1edfi \u0111\u1ed9ng l\u1ea1i thi\u1ebft b\u1ecb v\u00e0 k\u1ebft n\u1ed1i l\u1ea1i \u0111\u1ec3 modem c\u1ea5p \u0111\u1ecba ch\u1ec9 m\u1edbi.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Tr\u00ean m\u00e1y t\u00ednh, IP, gateway v\u00e0 DNS n\u00ean \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf ch\u1ebf \u0111\u1ed9 t\u1ef1 \u0111\u1ed9ng. N\u1ebfu gia \u0111\u00ecnh s\u1eed d\u1ee5ng th\u00eam router ph\u1ee5, c\u1ea7n b\u1ea3o \u0111\u1ea3m c\u00e1c thi\u1ebft b\u1ecb kh\u00f4ng c\u1ea5p DHCP ch\u1ed3ng ch\u00e9o khi ch\u01b0a \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh ph\u00f9 h\u1ee3p.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu kh\u00f4ng am hi\u1ec3u m\u1ea1ng n\u1ed9i b\u1ed9, n\u00ean gi\u1eef nguy\u00ean c\u1ea5u h\u00ecnh router ph\u1ee5 v\u00e0 nh\u1edd k\u1ef9 thu\u1eadt ki\u1ec3m tra.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Kh\u1eafc ph\u1ee5c l\u1ed7i modem WiFi<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Kh\u1edfi \u0111\u1ed9ng modem b\u1eb1ng n\u00fat ON\/OFF, ki\u1ec3m tra ngu\u1ed3n v\u00e0 \u0111\u1eb7t thi\u1ebft b\u1ecb t\u1ea1i n\u01a1i th\u00f4ng tho\u00e1ng.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu modem t\u1ef1 t\u1eaft b\u1eadt, m\u1ea5t t\u00ean WiFi ho\u1eb7c ch\u1ec9 ho\u1ea1t \u0111\u1ed9ng sau m\u1ed7i l\u1ea7n kh\u1edfi \u0111\u1ed9ng, c\u00f3 th\u1ec3 thi\u1ebft b\u1ecb ho\u1eb7c b\u1ed9 ngu\u1ed3n \u0111ang g\u1eb7p v\u1ea5n \u0111\u1ec1.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Ch\u1ec9 n\u00ean nghi ng\u1edd l\u1ed7i ph\u1ea7n c\u1ee9ng sau khi \u0111\u00e3 ki\u1ec3m tra ngu\u1ed3n, d\u00e2y v\u00e0 c\u1ea5u h\u00ecnh c\u01a1 b\u1ea3n. Viettel c\u0169ng khuy\u1ebfn ngh\u1ecb li\u00ean h\u1ec7 k\u1ef9 thu\u1eadt n\u1ebfu c\u00e1c b\u01b0\u1edbc x\u1eed l\u00fd th\u00f4ng th\u01b0\u1eddng kh\u00f4ng kh\u1eafc ph\u1ee5c \u0111\u01b0\u1ee3c l\u1ed7i modem.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Kh\u1eafc ph\u1ee5c l\u1ed7i tr\u00ean \u0111i\u1ec7n tho\u1ea1i<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Qu\u00ean m\u1ea1ng, k\u1ebft n\u1ed1i l\u1ea1i, t\u1eaft VPN v\u00e0 \u0111\u01b0a IP c\u00f9ng DNS v\u1ec1 t\u1ef1 \u0111\u1ed9ng.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu v\u1eabn kh\u00f4ng \u0111\u01b0\u1ee3c, h\u00e3y th\u1eed \u0111i\u1ec7n tho\u1ea1i v\u1edbi m\u1ed9t WiFi kh\u00e1c. N\u1ebfu \u0111i\u1ec7n tho\u1ea1i kh\u00f4ng v\u00e0o \u0111\u01b0\u1ee3c b\u1ea5t k\u1ef3 m\u1ea1ng n\u00e0o, c\u1ea7n ki\u1ec3m tra h\u1ec7 \u0111i\u1ec1u h\u00e0nh ho\u1eb7c ph\u1ea7n c\u1ee9ng WiFi c\u1ee7a thi\u1ebft b\u1ecb.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">\u0110\u1eb7t l\u1ea1i c\u00e0i \u0111\u1eb7t m\u1ea1ng c\u00f3 th\u1ec3 l\u00e0 b\u01b0\u1edbc cu\u1ed1i c\u00f9ng, nh\u01b0ng thao t\u00e1c n\u00e0y th\u01b0\u1eddng x\u00f3a c\u00e1c m\u1ea1ng WiFi v\u00e0 c\u1ea5u h\u00ecnh k\u1ebft n\u1ed1i \u0111\u00e3 l\u01b0u.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Kh\u1eafc ph\u1ee5c l\u1ed7i tr\u00ean m\u00e1y t\u00ednh<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Ki\u1ec3m tra ch\u1ebf \u0111\u1ed9 m\u00e1y bay, card m\u1ea1ng, driver v\u00e0 ph\u1ea7n m\u1ec1m b\u1ea3o m\u1eadt.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu d\u00f9ng d\u00e2y LAN, \u0111\u1ed5i d\u00e2y ho\u1eb7c c\u1ed5ng LAN kh\u00e1c. N\u1ebfu d\u00f9ng WiFi, ch\u1ecdn qu\u00ean m\u1ea1ng v\u00e0 k\u1ebft n\u1ed1i l\u1ea1i.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">C\u00f3 th\u1ec3 th\u1eed k\u1ebft n\u1ed1i m\u00e1y t\u00ednh v\u1edbi \u0111i\u1ec3m ph\u00e1t s\u00f3ng t\u1eeb \u0111i\u1ec7n tho\u1ea1i. N\u1ebfu m\u00e1y t\u00ednh v\u1eabn kh\u00f4ng v\u00e0o m\u1ea1ng, l\u1ed7i c\u00f3 kh\u1ea3 n\u0103ng n\u1eb1m tr\u00ean m\u00e1y t\u00ednh.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Kh\u1eafc ph\u1ee5c l\u1ed7i IPv4 ho\u1eb7c IPv6<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">\u0110\u01b0a c\u00e1c th\u00f4ng s\u1ed1 m\u1ea1ng v\u1ec1 t\u1ef1 \u0111\u1ed9ng tr\u01b0\u1edbc khi th\u1ef1c hi\u1ec7n thay \u0111\u1ed5i kh\u00e1c.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Kh\u00f4ng n\u00ean t\u1eaft IPv6 ch\u1ec9 v\u00ec m\u1ed9t website kh\u00f4ng m\u1edf \u0111\u01b0\u1ee3c. Vi\u1ec7c t\u1eaft giao th\u1ee9c c\u00f3 th\u1ec3 che gi\u1ea5u nguy\u00ean nh\u00e2n th\u1ef1c t\u1ebf v\u00e0 \u1ea3nh h\u01b0\u1edfng c\u00e1c d\u1ecbch v\u1ee5 kh\u00e1c.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu l\u1ed7i ch\u1ec9 x\u1ea3y ra tr\u00ean m\u1ea1ng n\u1ed9i b\u1ed9 c\u00f3 nhi\u1ec1u router ho\u1eb7c c\u1ea5u h\u00ecnh \u0111\u1eb7c bi\u1ec7t, n\u00ean nh\u1edd ng\u01b0\u1eddi c\u00f3 chuy\u00ean m\u00f4n ki\u1ec3m tra gateway, DNS v\u00e0 d\u1ea3i \u0111\u1ecba ch\u1ec9.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">X\u1eed l\u00fd khi l\u1ed7i t\u1eeb \u0111\u01b0\u1eddng truy\u1ec1n Viettel<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu LOS \u0111\u1ecf, PON kh\u00f4ng s\u00e1ng ho\u1eb7c c\u1ea3 LAN v\u00e0 WiFi \u0111\u1ec1u kh\u00f4ng c\u00f3 Internet, ng\u01b0\u1eddi d\u00f9ng n\u00ean ki\u1ec3m tra d\u00e2y b\u1eb1ng m\u1eaft th\u01b0\u1eddng v\u00e0 b\u00e1o k\u1ef9 thu\u1eadt.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Kh\u00f4ng th\u00e1o \u0111\u1ea7u c\u00e1p quang, t\u1ef1 n\u1ed1i d\u00e2y ho\u1eb7c thay \u0111\u1ed5i th\u00f4ng s\u1ed1 GPON. Nh\u1eefng l\u1ed7i n\u00e0y c\u1ea7n thi\u1ebft b\u1ecb \u0111o t\u00edn hi\u1ec7u v\u00e0 d\u1ee5ng c\u1ee5 chuy\u00ean d\u1ee5ng.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Xem quy tr\u00ecnh t\u1ed5ng qu\u00e1t t\u1ea1i b\u00e0i Internet Viettel kh\u00f4ng c\u00f3 m\u1ea1ng? Ki\u1ec3m tra theo 7 b\u01b0\u1edbc.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Co_can_Reset_modem_khi_WiFi_khong_vao_duoc_mang\"><\/span><span style=\"color: #ed1c24;\"><strong><span style=\"font-family: 'times new roman', times, serif;\">C\u00f3 c\u1ea7n Reset modem khi WiFi kh\u00f4ng v\u00e0o \u0111\u01b0\u1ee3c m\u1ea1ng?<\/span><\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure id=\"attachment_1937\" aria-describedby=\"caption-attachment-1937\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-1937 size-full\" title=\"C\u00f3 n\u00ean Reset modem khi WiFi m\u1ea5t m\u1ea1ng\" src=\"http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/wifi-viettel-khong-vao-duoc-mang-6.jpg\" alt=\"C\u00f3 n\u00ean Reset modem khi WiFi m\u1ea5t m\u1ea1ng\" width=\"800\" height=\"600\" srcset=\"http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/wifi-viettel-khong-vao-duoc-mang-6.jpg 800w, http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/wifi-viettel-khong-vao-duoc-mang-6-533x400.jpg 533w, http:\/\/viettelvtt.com\/wp-content\/uploads\/2026\/07\/wifi-viettel-khong-vao-duoc-mang-6-768x576.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-1937\" class=\"wp-caption-text\">C\u00f3 n\u00ean Reset modem khi WiFi m\u1ea5t m\u1ea1ng<\/figcaption><\/figure>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Trong ph\u1ea7n l\u1edbn tr\u01b0\u1eddng h\u1ee3p, ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng c\u1ea7n Reset modem.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Reset s\u1ebd \u0111\u01b0a modem v\u1ec1 tr\u1ea1ng th\u00e1i m\u1eb7c \u0111\u1ecbnh. T\u00ean WiFi, m\u1eadt kh\u1ea9u v\u00e0 c\u1ea5u h\u00ecnh d\u1ecbch v\u1ee5 c\u00f3 th\u1ec3 thay \u0111\u1ed5i ho\u1eb7c b\u1ecb x\u00f3a. N\u1ebfu kh\u00f4ng c\u00f3 th\u00f4ng tin thi\u1ebft l\u1eadp, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 l\u00e0m to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng m\u1ea5t k\u1ebft n\u1ed1i.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Restart v\u00e0 Reset l\u00e0 hai thao t\u00e1c kh\u00e1c nhau:<\/span><\/p>\n<table dir=\"ltr\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\" data-sheets-root=\"1\" data-sheets-baot=\"1\">\n<colgroup>\n<col width=\"267\" \/>\n<col width=\"283\" \/>\n<col width=\"304\" \/><\/colgroup>\n<tbody>\n<tr>\n<td><span style=\"font-family: 'times new roman', times, serif;\">Thao t\u00e1c<\/span><\/td>\n<td><span style=\"font-family: 'times new roman', times, serif;\">T\u00e1c d\u1ee5ng<\/span><\/td>\n<td><span style=\"font-family: 'times new roman', times, serif;\">M\u1ee9c \u0111\u1ed9 \u1ea3nh h\u01b0\u1edfng<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-family: 'times new roman', times, serif;\">Restart b\u1eb1ng ON\/OFF<\/span><\/td>\n<td><span style=\"font-family: 'times new roman', times, serif;\">Kh\u1edfi \u0111\u1ed9ng l\u1ea1i modem<\/span><\/td>\n<td><span style=\"font-family: 'times new roman', times, serif;\">Th\u01b0\u1eddng gi\u1eef nguy\u00ean c\u1ea5u h\u00ecnh<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-family: 'times new roman', times, serif;\">Reset b\u1eb1ng n\u00fat nh\u1ecf<\/span><\/td>\n<td><span style=\"font-family: 'times new roman', times, serif;\">\u0110\u01b0a modem v\u1ec1 m\u1eb7c \u0111\u1ecbnh<\/span><\/td>\n<td><span style=\"font-family: 'times new roman', times, serif;\">C\u00f3 th\u1ec3 x\u00f3a c\u1ea5u h\u00ecnh v\u00e0 m\u1eadt kh\u1ea9u<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-family: 'times new roman', times, serif;\">Qu\u00ean m\u1ea1ng tr\u00ean \u0111i\u1ec7n tho\u1ea1i<\/span><\/td>\n<td><span style=\"font-family: 'times new roman', times, serif;\">X\u00f3a th\u00f4ng tin WiFi tr\u00ean m\u1ed9t thi\u1ebft b\u1ecb<\/span><\/td>\n<td><span style=\"font-family: 'times new roman', times, serif;\">Kh\u00f4ng \u1ea3nh h\u01b0\u1edfng thi\u1ebft b\u1ecb kh\u00e1c<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-family: 'times new roman', times, serif;\">Kh\u1edfi \u0111\u1ed9ng l\u1ea1i \u0111i\u1ec7n tho\u1ea1i<\/span><\/td>\n<td><span style=\"font-family: 'times new roman', times, serif;\">L\u00e0m m\u1edbi k\u1ebft n\u1ed1i thi\u1ebft b\u1ecb<\/span><\/td>\n<td><span style=\"font-family: 'times new roman', times, serif;\">Kh\u00f4ng thay \u0111\u1ed5i modem<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Viettel l\u01b0u \u00fd ng\u01b0\u1eddi d\u00f9ng ch\u1ec9 n\u00ean Reset khi hi\u1ec3u c\u00e1ch c\u00e0i \u0111\u1eb7t l\u1ea1i modem; thao t\u00e1c kh\u1edfi \u0111\u1ed9ng th\u00f4ng th\u01b0\u1eddng c\u1ea7n s\u1eed d\u1ee5ng n\u00fat ON\/OFF.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Reset kh\u00f4ng kh\u1eafc ph\u1ee5c \u0111\u01b0\u1ee3c d\u00e2y quang b\u1ecb \u0111\u1ee9t, LOS \u0111\u1ecf, ngu\u1ed3n \u0111i\u1ec7n l\u1ed7i ho\u1eb7c s\u1ef1 c\u1ed1 h\u1ea1 t\u1ea7ng. V\u00ec v\u1eady, h\u00e3y x\u00e1c \u0111\u1ecbnh nguy\u00ean nh\u00e2n tr\u01b0\u1edbc khi thao t\u00e1c.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Khi_nao_can_lien_he_ky_thuat_Viettel\"><\/span><span style=\"color: #ed1c24;\"><strong><span style=\"font-family: 'times new roman', times, serif;\">Khi n\u00e0o c\u1ea7n li\u00ean h\u1ec7 k\u1ef9 thu\u1eadt Viettel?<\/span><\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Ng\u01b0\u1eddi d\u00f9ng n\u00ean li\u00ean h\u1ec7 k\u1ef9 thu\u1eadt khi to\u00e0n b\u1ed9 thi\u1ebft b\u1ecb c\u00f9ng m\u1ea5t Internet, modem b\u00e1o LOS \u0111\u1ecf, PON kh\u00f4ng s\u00e1ng ho\u1eb7c k\u1ebft n\u1ed1i kh\u00f4ng kh\u00f4i ph\u1ee5c sau khi \u0111\u00e3 kh\u1edfi \u0111\u1ed9ng modem \u0111\u00fang c\u00e1ch.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">C\u0169ng c\u1ea7n b\u00e1o h\u1ed7 tr\u1ee3 n\u1ebfu modem t\u1ef1 t\u1eaft b\u1eadt, ngu\u1ed3n n\u00f3ng b\u1ea5t th\u01b0\u1eddng, c\u1ed5ng LAN kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng ho\u1eb7c l\u1ed7i li\u00ean t\u1ee5c t\u00e1i di\u1ec5n tr\u00ean c\u1ea3 WiFi v\u00e0 LAN.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Tr\u01b0\u1edbc khi li\u00ean h\u1ec7, h\u00e3y chu\u1ea9n b\u1ecb s\u1ed1 \u0111i\u1ec7n tho\u1ea1i \u0111\u0103ng k\u00fd, \u0111\u1ecba ch\u1ec9 l\u1eafp \u0111\u1eb7t, th\u1eddi \u0111i\u1ec3m x\u1ea3y ra l\u1ed7i v\u00e0 tr\u1ea1ng th\u00e1i c\u00e1c \u0111\u00e8n tr\u00ean modem. C\u00f3 th\u1ec3 ch\u1ee5p \u1ea3nh m\u1eb7t tr\u01b0\u1edbc modem \u0111\u1ec3 m\u00f4 t\u1ea3 ch\u00ednh x\u00e1c h\u01a1n.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Viettel hi\u1ec7n c\u00f4ng b\u1ed1 1800 8119 l\u00e0 k\u00eanh ch\u0103m s\u00f3c kh\u00e1ch h\u00e0ng d\u1ecbch v\u1ee5 c\u1ed1 \u0111\u1ecbnh; trang h\u1ed7 tr\u1ee3 ch\u00ednh th\u1ee9c c\u0169ng li\u1ec7t k\u00ea \u0111\u00e2y l\u00e0 \u0111\u1ea7u s\u1ed1 d\u00e0nh cho Internet c\u00e1p quang v\u00e0 c\u00e1c d\u1ecbch v\u1ee5 c\u1ed1 \u0111\u1ecbnh.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">C\u00f3 th\u1ec3 m\u00f4 t\u1ea3 s\u1ef1 c\u1ed1 nh\u01b0 sau:<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">\u0110i\u1ec7n tho\u1ea1i v\u00e0 m\u00e1y t\u00ednh \u0111\u1ec1u k\u1ebft n\u1ed1i \u0111\u01b0\u1ee3c WiFi nh\u01b0ng kh\u00f4ng truy c\u1eadp Internet. Modem c\u00f3 ngu\u1ed3n, \u0111\u00e8n PON \u0111ang s\u00e1ng, LOS t\u1eaft nh\u01b0ng \u0111\u00e8n Internet kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng. T\u00f4i \u0111\u00e3 kh\u1edfi \u0111\u1ed9ng l\u1ea1i modem v\u00e0 th\u1eed b\u1eb1ng d\u00e2y LAN nh\u01b0ng ch\u01b0a kh\u1eafc ph\u1ee5c \u0111\u01b0\u1ee3c.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ed9i dung c\u1ee5 th\u1ec3 gi\u00fap b\u1ed9 ph\u1eadn h\u1ed7 tr\u1ee3 ph\u00e2n bi\u1ec7t l\u1ed7i thi\u1ebft b\u1ecb v\u1edbi l\u1ed7i \u0111\u01b0\u1eddng truy\u1ec1n.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cau_hoi_thuong_gap_ve_WiFi_Viettel_khong_vao_duoc_mang\"><\/span><span style=\"color: #ed1c24;\"><strong><span style=\"font-family: 'times new roman', times, serif;\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 WiFi Viettel kh\u00f4ng v\u00e0o \u0111\u01b0\u1ee3c m\u1ea1ng<\/span><\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">V\u00ec sao \u0111i\u1ec7n tho\u1ea1i c\u00f3 WiFi nh\u01b0ng kh\u00f4ng c\u00f3 m\u1ea1ng?<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">\u0110i\u1ec7n tho\u1ea1i m\u1edbi ch\u1ec9 k\u1ebft n\u1ed1i \u0111\u01b0\u1ee3c v\u1edbi modem, trong khi modem c\u00f3 th\u1ec3 \u0111\u00e3 m\u1ea5t Internet. Ngo\u00e0i ra, l\u1ed7i c\u00f3 th\u1ec3 n\u1eb1m \u1edf IP, DNS, VPN ho\u1eb7c c\u1ea5u h\u00ecnh tr\u00ean \u0111i\u1ec7n tho\u1ea1i.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">WiFi b\u00e1o \u0111\u00e3 k\u1ebft n\u1ed1i nh\u01b0ng kh\u00f4ng c\u00f3 Internet ph\u1ea3i l\u00e0m g\u00ec \u0111\u1ea7u ti\u00ean?<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">H\u00e3y th\u1eed b\u1eb1ng m\u1ed9t thi\u1ebft b\u1ecb kh\u00e1c. N\u1ebfu ch\u1ec9 m\u1ed9t thi\u1ebft b\u1ecb l\u1ed7i, qu\u00ean m\u1ea1ng v\u00e0 k\u1ebft n\u1ed1i l\u1ea1i. N\u1ebfu to\u00e0n b\u1ed9 thi\u1ebft b\u1ecb c\u00f9ng l\u1ed7i, ki\u1ec3m tra \u0111\u00e8n modem.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">L\u1ed7i DNS l\u00e0 g\u00ec?<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">DNS gi\u00fap chuy\u1ec3n t\u00ean website th\u00e0nh \u0111\u1ecba ch\u1ec9 m\u00e1y ch\u1ee7. Khi DNS l\u1ed7i, thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 c\u00f3 k\u1ebft n\u1ed1i nh\u01b0ng kh\u00f4ng t\u00ecm \u0111\u01b0\u1ee3c website c\u1ea7n truy c\u1eadp.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">L\u00e0m sao bi\u1ebft WiFi b\u1ecb l\u1ed7i DNS?<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Th\u01b0\u1eddng ch\u1ec9 m\u1ed9t s\u1ed1 website ho\u1eb7c tr\u00ecnh duy\u1ec7t kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng, trong khi \u1ee9ng d\u1ee5ng kh\u00e1c v\u1eabn c\u00f3 th\u1ec3 k\u1ebft n\u1ed1i. H\u00e3y th\u1eed nhi\u1ec1u d\u1ecbch v\u1ee5 v\u00e0 \u0111\u01b0a DNS v\u1ec1 t\u1ef1 \u0111\u1ed9ng.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">C\u00f3 n\u00ean \u0111\u1ed5i DNS ngay kh\u00f4ng?<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Kh\u00f4ng n\u00ean \u0111\u1ed5i ngay khi ch\u01b0a x\u00e1c \u0111\u1ecbnh nguy\u00ean nh\u00e2n. Tr\u01b0\u1edbc ti\u00ean, h\u00e3y th\u1eed thi\u1ebft b\u1ecb kh\u00e1c, kh\u1edfi \u0111\u1ed9ng modem v\u00e0 \u0111\u01b0a c\u1ea5u h\u00ecnh v\u1ec1 t\u1ef1 \u0111\u1ed9ng.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">DHCP l\u00e0 g\u00ec?<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">DHCP l\u00e0 ch\u1ee9c n\u0103ng t\u1ef1 \u0111\u1ed9ng c\u1ea5p \u0111\u1ecba ch\u1ec9 IP v\u00e0 th\u00f4ng tin m\u1ea1ng cho thi\u1ebft b\u1ecb. Khi DHCP l\u1ed7i, \u0111i\u1ec7n tho\u1ea1i c\u00f3 th\u1ec3 k\u1ebft n\u1ed1i WiFi nh\u01b0ng kh\u00f4ng giao ti\u1ebfp \u0111\u00fang v\u1edbi modem.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">V\u00ec sao ch\u1ec9 m\u1ed9t \u0111i\u1ec7n tho\u1ea1i kh\u00f4ng v\u00e0o \u0111\u01b0\u1ee3c m\u1ea1ng?<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">\u0110i\u1ec7n tho\u1ea1i c\u00f3 th\u1ec3 l\u01b0u sai m\u1eadt kh\u1ea9u, nh\u1eadn sai IP, b\u1eadt VPN ho\u1eb7c d\u00f9ng DNS th\u1ee7 c\u00f4ng. N\u1ebfu c\u00e1c thi\u1ebft b\u1ecb kh\u00e1c v\u1eabn d\u00f9ng \u0111\u01b0\u1ee3c, kh\u00f4ng n\u00ean Reset modem.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">V\u00ec sao m\u00e1y t\u00ednh d\u00f9ng LAN \u0111\u01b0\u1ee3c nh\u01b0ng \u0111i\u1ec7n tho\u1ea1i kh\u00f4ng c\u00f3 Internet?<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">\u0110\u01b0\u1eddng truy\u1ec1n c\u00f3 th\u1ec3 v\u1eabn b\u00ecnh th\u01b0\u1eddng. L\u1ed7i c\u00f3 th\u1ec3 n\u1eb1m \u1edf b\u1ed9 ph\u00e1t WiFi, c\u1ea5u h\u00ecnh kh\u00f4ng d\u00e2y ho\u1eb7c \u0111i\u1ec7n tho\u1ea1i.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">V\u00ec sao WiFi d\u00f9ng \u0111\u01b0\u1ee3c nh\u01b0ng d\u00e2y LAN kh\u00f4ng c\u00f3 m\u1ea1ng?<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">D\u00e2y LAN, \u0111\u1ea7u c\u1eafm, c\u1ed5ng modem ho\u1eb7c card m\u1ea1ng m\u00e1y t\u00ednh c\u00f3 th\u1ec3 g\u1eb7p l\u1ed7i. H\u00e3y th\u1eed d\u00e2y v\u00e0 c\u1ed5ng kh\u00e1c.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">LOS \u0111\u1ecf c\u00f3 s\u1eeda b\u1eb1ng c\u00e1ch \u0111\u1ed5i DNS \u0111\u01b0\u1ee3c kh\u00f4ng?<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Kh\u00f4ng. LOS \u0111\u1ecf li\u00ean quan \u0111\u1ebfn t\u00edn hi\u1ec7u c\u00e1p quang. \u0110\u1ed5i DNS kh\u00f4ng th\u1ec3 kh\u00f4i ph\u1ee5c \u0111\u01b0\u1eddng quang b\u1ecb m\u1ea5t.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Kh\u1edfi \u0111\u1ed9ng modem c\u00f3 l\u00e0m m\u1ea5t m\u1eadt kh\u1ea9u kh\u00f4ng?<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Kh\u1edfi \u0111\u1ed9ng b\u1eb1ng n\u00fat ON\/OFF th\u01b0\u1eddng kh\u00f4ng l\u00e0m m\u1ea5t m\u1eadt kh\u1ea9u. Reset modem m\u1edbi c\u00f3 th\u1ec3 \u0111\u01b0a c\u1ea5u h\u00ecnh v\u1ec1 m\u1eb7c \u0111\u1ecbnh.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">C\u00f3 n\u00ean t\u1eaft IPv6 \u0111\u1ec3 s\u1eeda m\u1ea1ng kh\u00f4ng?<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Kh\u00f4ng n\u00ean t\u1eaft khi ch\u01b0a x\u00e1c \u0111\u1ecbnh l\u1ed7i. H\u00e3y \u0111\u1ec3 c\u1ea5u h\u00ecnh t\u1ef1 \u0111\u1ed9ng v\u00e0 ki\u1ec3m tra c\u00e1c nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn tr\u01b0\u1edbc.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">VPN c\u00f3 l\u00e0m WiFi m\u1ea5t Internet kh\u00f4ng?<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">C\u00f3 th\u1ec3. N\u1ebfu m\u00e1y ch\u1ee7 VPN l\u1ed7i ho\u1eb7c c\u1ea5u h\u00ecnh sai, thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 kh\u00f4ng truy c\u1eadp \u0111\u01b0\u1ee3c Internet. H\u00e3y t\u1eaft VPN \u0111\u1ec3 ki\u1ec3m tra.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Ch\u1ec9 m\u1ed9t website kh\u00f4ng m\u1edf \u0111\u01b0\u1ee3c c\u00f3 ph\u1ea3i l\u1ed7i Viettel kh\u00f4ng?<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">Ch\u01b0a ch\u1eafc. Website c\u00f3 th\u1ec3 \u0111ang b\u1ea3o tr\u00ec ho\u1eb7c m\u00e1y ch\u1ee7 g\u1eb7p s\u1ef1 c\u1ed1. H\u00e3y m\u1edf website kh\u00e1c v\u00e0 th\u1eed b\u1eb1ng tr\u00ecnh duy\u1ec7t kh\u00e1c.<\/span><\/p>\n<h3><strong><span style=\"font-family: 'times new roman', times, serif;\">Khi n\u00e0o c\u1ea7n g\u1ecdi k\u1ef9 thu\u1eadt?<\/span><\/strong><\/h3>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u00ean g\u1ecdi khi to\u00e0n b\u1ed9 thi\u1ebft b\u1ecb m\u1ea5t Internet, LOS \u0111\u1ecf, PON kh\u00f4ng s\u00e1ng, c\u1ea3 LAN v\u00e0 WiFi \u0111\u1ec1u l\u1ed7i ho\u1eb7c modem ho\u1ea1t \u0111\u1ed9ng b\u1ea5t th\u01b0\u1eddng.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Ket_luan\"><\/span><span style=\"color: #ed1c24;\"><strong><span style=\"font-family: 'times new roman', times, serif;\">K\u1ebft lu\u1eadn<\/span><\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-family: 'times new roman', times, serif;\">T\u00ecnh tr\u1ea1ng WiFi Viettel kh\u00f4ng v\u00e0o \u0111\u01b0\u1ee3c m\u1ea1ng c\u00f3 th\u1ec3 xu\u1ea5t ph\u00e1t t\u1eeb DNS, DHCP, xung \u0111\u1ed9t IP, VPN, modem WiFi, thi\u1ebft b\u1ecb ng\u01b0\u1eddi d\u00f9ng ho\u1eb7c \u0111\u01b0\u1eddng truy\u1ec1n c\u00e1p quang.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">C\u00e1ch x\u1eed l\u00fd \u0111\u00fang l\u00e0 th\u1eed thi\u1ebft b\u1ecb kh\u00e1c, ki\u1ec3m tra \u0111\u00e8n modem, kh\u1edfi \u0111\u1ed9ng modem b\u1eb1ng n\u00fat ON\/OFF, qu\u00ean m\u1ea1ng WiFi v\u00e0 \u0111\u01b0a IP c\u00f9ng DNS v\u1ec1 t\u1ef1 \u0111\u1ed9ng. Kh\u00f4ng n\u00ean Reset modem khi ch\u01b0a bi\u1ebft c\u00e1ch c\u1ea5u h\u00ecnh l\u1ea1i.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">N\u1ebfu to\u00e0n b\u1ed9 thi\u1ebft b\u1ecb c\u00f9ng m\u1ea5t Internet, LOS \u0111\u1ecf ho\u1eb7c c\u1ea3 WiFi v\u00e0 LAN \u0111\u1ec1u kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng, h\u00e3y li\u00ean h\u1ec7 k\u1ef9 thu\u1eadt Viettel \u0111\u1ec3 ki\u1ec3m tra \u0111\u01b0\u1eddng truy\u1ec1n.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>T\u00ecnh tr\u1ea1ng WiFi Viettel kh\u00f4ng v\u00e0o \u0111\u01b0\u1ee3c m\u1ea1ng th\u01b0\u1eddng khi\u1ebfn ng\u01b0\u1eddi d\u00f9ng nh\u1ea7m r\u1eb1ng \u0111i\u1ec7n tho\u1ea1i ho\u1eb7c m\u00e1y t\u00ednh \u0111\u00e3 k\u1ebft n\u1ed1i Internet th\u00e0nh c\u00f4ng. Tr\u00ean th\u1ef1c t\u1ebf, bi\u1ec3u t\u01b0\u1ee3ng WiFi ch\u1ec9 cho bi\u1ebft thi\u1ebft b\u1ecb \u0111ang k\u1ebft n\u1ed1i v\u1edbi modem ho\u1eb7c b\u1ed9 ph\u00e1t kh\u00f4ng d\u00e2y. N\u1ebfu modem m\u1ea5t t\u00edn hi\u1ec7u quang, l\u1ed7i k\u1ebft n\u1ed1i<\/p>\n","protected":false},"author":1,"featured_media":1932,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[92,1],"tags":[569,572,573,570,571],"class_list":["post-1927","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc","category-uncategorized","tag-co-wifi-nhung-khong-co-internet","tag-internet-loi-dns","tag-modem-loi","tag-wifi-bao-ket-noi-khong-internet","tag-wifi-mat-mang"],"_links":{"self":[{"href":"https:\/\/viettelvtt.com\/wp-json\/wp\/v2\/posts\/1927","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/viettelvtt.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/viettelvtt.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/viettelvtt.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/viettelvtt.com\/wp-json\/wp\/v2\/comments?post=1927"}],"version-history":[{"count":6,"href":"https:\/\/viettelvtt.com\/wp-json\/wp\/v2\/posts\/1927\/revisions"}],"predecessor-version":[{"id":1939,"href":"https:\/\/viettelvtt.com\/wp-json\/wp\/v2\/posts\/1927\/revisions\/1939"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/viettelvtt.com\/wp-json\/wp\/v2\/media\/1932"}],"wp:attachment":[{"href":"https:\/\/viettelvtt.com\/wp-json\/wp\/v2\/media?parent=1927"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/viettelvtt.com\/wp-json\/wp\/v2\/categories?post=1927"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/viettelvtt.com\/wp-json\/wp\/v2\/tags?post=1927"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}