{"id":476893,"date":"2023-08-09T09:05:02","date_gmt":"2023-08-09T09:05:02","guid":{"rendered":""},"modified":"2023-09-05T11:13:38","modified_gmt":"2023-09-05T11:13:38","slug":"dns-filtering","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/dns-filtering\/","title":{"rendered":"L\u1ecdc DNS"},"content":{"rendered":"<h2>Gi\u1edbi thi\u1ec7u<\/h2>\n<p>L\u1ecdc DNS l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 m\u1ea1nh m\u1ebd \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ki\u1ec3m so\u00e1t v\u00e0 b\u1ea3o m\u1eadt quy\u1ec1n truy c\u1eadp v\u00e0o internet. \u0110\u00f3 l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh bao g\u1ed3m vi\u1ec7c cho ph\u00e9p ho\u1eb7c t\u1eeb ch\u1ed1i c\u00f3 ch\u1ecdn l\u1ecdc quy\u1ec1n truy c\u1eadp v\u00e0o c\u00e1c trang web ho\u1eb7c n\u1ed9i dung nh\u1ea5t \u0111\u1ecbnh d\u1ef1a tr\u00ean c\u00e1c quy t\u1eafc \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc. L\u1ecdc DNS ho\u1ea1t \u0111\u1ed9ng \u1edf c\u1ea5p h\u1ec7 th\u1ed1ng t\u00ean mi\u1ec1n (DNS), \u0111\u00f3ng vai tr\u00f2 l\u00e0 ng\u01b0\u1eddi g\u00e1c c\u1ed5ng gi\u1eefa ng\u01b0\u1eddi d\u00f9ng v\u00e0 internet. C\u00e1c nh\u00e0 cung c\u1ea5p m\u00e1y ch\u1ee7 proxy, ch\u1eb3ng h\u1ea1n nh\u01b0 OneProxy (oneproxy.pro), t\u1eadn d\u1ee5ng t\u00ednh n\u0103ng l\u1ecdc DNS \u0111\u1ec3 cung c\u1ea5p kh\u1ea3 n\u0103ng ki\u1ec3m so\u00e1t v\u00e0 b\u1ea3o m\u1eadt n\u00e2ng cao cho ng\u01b0\u1eddi d\u00f9ng c\u1ee7a h\u1ecd.<\/p>\n<h2>L\u1ecbch s\u1eed l\u1ecdc DNS<\/h2>\n<p>Kh\u00e1i ni\u1ec7m l\u1ecdc DNS c\u00f3 t\u1eeb nh\u1eefng ng\u00e0y \u0111\u1ea7u c\u1ee7a Internet khi nhu c\u1ea7u qu\u1ea3n l\u00fd n\u1ed9i dung Internet v\u00e0 b\u1ea3o v\u1ec7 ng\u01b0\u1eddi d\u00f9ng kh\u1ecfi c\u00e1c trang web \u0111\u1ed9c h\u1ea1i xu\u1ea5t hi\u1ec7n. Vi\u1ec7c \u0111\u1ec1 c\u1eadp \u0111\u1ebfn l\u1ecdc DNS l\u1ea7n \u0111\u1ea7u ti\u00ean c\u00f3 th\u1ec3 b\u1eaft ngu\u1ed3n t\u1eeb \u0111\u1ea7u nh\u1eefng n\u0103m 1990 khi c\u00e1c ch\u00ednh ph\u1ee7 v\u00e0 t\u1ed5 ch\u1ee9c b\u1eaft \u0111\u1ea7u tri\u1ec3n khai c\u00e1c k\u1ef9 thu\u1eadt l\u1ecdc th\u00f4 s\u01a1 \u0111\u1ec3 ch\u1eb7n quy\u1ec1n truy c\u1eadp v\u00e0o c\u00e1c trang web c\u1ee5 th\u1ec3. Trong nh\u1eefng n\u0103m qua, t\u00ednh n\u0103ng l\u1ecdc DNS \u0111\u00e3 ph\u00e1t tri\u1ec3n th\u00e0nh m\u1ed9t h\u1ec7 th\u1ed1ng tinh vi c\u00f3 kh\u1ea3 n\u0103ng ph\u00e2n lo\u1ea1i c\u00e1c trang web, x\u00e1c \u0111\u1ecbnh c\u00e1c m\u1ed1i \u0111e d\u1ecda v\u00e0 cung c\u1ea5p tr\u1ea3i nghi\u1ec7m duy\u1ec7t web an to\u00e0n.<\/p>\n<h2>Th\u00f4ng tin chi ti\u1ebft v\u1ec1 l\u1ecdc DNS<\/h2>\n<p>L\u1ecdc DNS ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c ba m\u1ee5c ti\u00eau ch\u00ednh:<\/p>\n<ol>\n<li>\n<p><strong>T\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt<\/strong>: L\u1ecdc DNS gi\u00fap b\u1ea3o v\u1ec7 ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp c\u00e1c trang web \u0111\u1ed9c h\u1ea1i ho\u1eb7c \u0111\u1ed9c h\u1ea1i c\u00f3 th\u1ec3 ch\u1ee9a ph\u1ea7n m\u1ec1m \u0111\u1ed9c h\u1ea1i, \u00e2m m\u01b0u l\u1eeba \u0111\u1ea3o ho\u1eb7c c\u00e1c m\u1ed1i \u0111e d\u1ecda m\u1ea1ng kh\u00e1c. B\u1eb1ng c\u00e1ch ch\u1eb7n quy\u1ec1n truy c\u1eadp v\u00e0o c\u00e1c mi\u1ec1n nguy hi\u1ec3m \u0111\u00e3 bi\u1ebft, t\u00ednh n\u0103ng l\u1ecdc DNS ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t l\u1edbp b\u1ea3o m\u1eadt b\u1ed5 sung.<\/p>\n<\/li>\n<li>\n<p><strong>L\u1ecdc n\u1ed9i dung<\/strong>: C\u00e1c t\u1ed5 ch\u1ee9c th\u01b0\u1eddng s\u1eed d\u1ee5ng t\u00ednh n\u0103ng l\u1ecdc DNS \u0111\u1ec3 th\u1ef1c thi c\u00e1c ch\u00ednh s\u00e1ch s\u1eed d\u1ee5ng internet v\u00e0 ng\u0103n ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp n\u1ed9i dung kh\u00f4ng ph\u00f9 h\u1ee3p ho\u1eb7c kh\u00f4ng li\u00ean quan \u0111\u1ebfn c\u00f4ng vi\u1ec7c. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t ph\u1ed5 bi\u1ebfn \u1edf c\u00e1c c\u01a1 s\u1edf gi\u00e1o d\u1ee5c v\u00e0 n\u01a1i l\u00e0m vi\u1ec7c.<\/p>\n<\/li>\n<li>\n<p><strong>Ki\u1ec3m so\u00e1t c\u1ee7a cha m\u1eb9<\/strong>: Trong nh\u00e0, cha m\u1eb9 c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng t\u00ednh n\u0103ng l\u1ecdc DNS \u0111\u1ec3 ki\u1ec3m so\u00e1t quy\u1ec1n truy c\u1eadp Internet c\u1ee7a con c\u00e1i h\u1ecd, \u0111\u1ea3m b\u1ea3o ch\u00fang \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 kh\u1ecfi truy c\u1eadp n\u1ed9i dung c\u00f3 h\u1ea1i ho\u1eb7c kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi l\u1ee9a tu\u1ed5i.<\/p>\n<\/li>\n<\/ol>\n<h2>C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a l\u1ecdc DNS<\/h2>\n<p>Qu\u00e1 tr\u00ecnh l\u1ecdc DNS bao g\u1ed3m m\u1ed9t lo\u1ea1t c\u00e1c b\u01b0\u1edbc x\u1ea3y ra khi ng\u01b0\u1eddi d\u00f9ng c\u1ed1 g\u1eafng truy c\u1eadp m\u1ed9t trang web:<\/p>\n<ol>\n<li>\n<p><strong>Y\u00eau c\u1ea7u c\u1ee7a ng\u01b0\u1eddi d\u00f9ng<\/strong>: Khi ng\u01b0\u1eddi d\u00f9ng nh\u1eadp URL v\u00e0o tr\u00ecnh duy\u1ec7t web c\u1ee7a h\u1ecd, y\u00eau c\u1ea7u DNS s\u1ebd \u0111\u01b0\u1ee3c t\u1ea1o \u0111\u1ec3 ph\u00e2n gi\u1ea3i \u0111\u1ecba ch\u1ec9 IP c\u1ee7a trang web.<\/p>\n<\/li>\n<li>\n<p><strong>D\u1ecbch v\u1ee5 l\u1ecdc DNS<\/strong>: Y\u00eau c\u1ea7u DNS b\u1ecb ch\u1eb7n b\u1edfi d\u1ecbch v\u1ee5 l\u1ecdc DNS, ch\u1eb3ng h\u1ea1n nh\u01b0 OneProxy, tr\u01b0\u1edbc khi ti\u1ebfp c\u1eadn tr\u00ecnh ph\u00e2n gi\u1ea3i DNS ti\u00eau chu\u1ea9n.<\/p>\n<\/li>\n<li>\n<p><strong>Ph\u00e2n lo\u1ea1i t\u00ean mi\u1ec1n<\/strong>: D\u1ecbch v\u1ee5 l\u1ecdc s\u1ebd ki\u1ec3m tra mi\u1ec1n \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u d\u1ef1a tr\u00ean c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u1ee7a mi\u1ec1n \u0111\u00f3, trong \u0111\u00f3 c\u00f3 danh s\u00e1ch c\u00e1c trang web \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i d\u1ef1a tr\u00ean n\u1ed9i dung v\u00e0 m\u1ee9c \u0111\u1ed9 an to\u00e0n c\u1ee7a ch\u00fang.<\/p>\n<\/li>\n<li>\n<p><strong>l\u1ecdc nh\u1eefng n\u1ed9i quy<\/strong>: D\u1ef1a tr\u00ean c\u00e1c quy t\u1eafc v\u00e0 ch\u00ednh s\u00e1ch l\u1ecdc \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc, d\u1ecbch v\u1ee5 l\u1ecdc DNS s\u1ebd x\u00e1c \u0111\u1ecbnh xem n\u00ean cho ph\u00e9p hay t\u1eeb ch\u1ed1i quy\u1ec1n truy c\u1eadp v\u00e0o trang web \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u.<\/p>\n<\/li>\n<li>\n<p><strong>Ph\u1ea3n h\u1ed3i cho ng\u01b0\u1eddi d\u00f9ng<\/strong>: D\u1ecbch v\u1ee5 l\u1ecdc g\u1eedi ph\u1ea3n h\u1ed3i t\u1edbi y\u00eau c\u1ea7u DNS c\u1ee7a ng\u01b0\u1eddi d\u00f9ng, gi\u1ea3i quy\u1ebft \u0111\u1ecba ch\u1ec9 IP c\u1ee7a mi\u1ec1n (cho ph\u00e9p truy c\u1eadp) ho\u1eb7c tr\u1ea3 v\u1ec1 l\u1ed7i (t\u1eeb ch\u1ed1i quy\u1ec1n truy c\u1eadp).<\/p>\n<\/li>\n<\/ol>\n<h2>Ph\u00e2n t\u00edch c\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a l\u1ecdc DNS<\/h2>\n<p>L\u1ecdc DNS cung c\u1ea5p m\u1ed9t s\u1ed1 t\u00ednh n\u0103ng quan tr\u1ecdng gi\u00fap n\u00f3 tr\u1edf th\u00e0nh m\u1ed9t c\u00f4ng c\u1ee5 c\u00f3 gi\u00e1 tr\u1ecb \u0111\u1ec3 ki\u1ec3m so\u00e1t truy c\u1eadp v\u00e0 b\u1ea3o m\u1eadt internet:<\/p>\n<ol>\n<li>\n<p><strong>B\u1ea3o v\u1ec7 th\u1eddi gian th\u1ef1c<\/strong>: D\u1ecbch v\u1ee5 l\u1ecdc DNS th\u01b0\u1eddng duy tr\u00ec c\u01a1 s\u1edf d\u1eef li\u1ec7u r\u1ed9ng l\u1edbn v\u1ec1 c\u00e1c mi\u1ec1n \u0111\u1ed9c h\u1ea1i \u0111\u00e3 bi\u1ebft, \u0111\u1ea3m b\u1ea3o b\u1ea3o v\u1ec7 ngay l\u1eadp t\u1ee9c kh\u1ecfi c\u00e1c m\u1ed1i \u0111e d\u1ecda m\u1edbi n\u1ed5i.<\/p>\n<\/li>\n<li>\n<p><strong>Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng<\/strong>: L\u1ecdc DNS c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c tri\u1ec3n khai tr\u00ean c\u00e1c m\u1ea1ng l\u1edbn, khi\u1ebfn n\u00f3 ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c t\u1ed5 ch\u1ee9c thu\u1ed9c m\u1ecdi quy m\u00f4.<\/p>\n<\/li>\n<li>\n<p><strong>D\u1ec5 tri\u1ec3n khai<\/strong>: Ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 h\u01b0\u1edfng l\u1ee3i t\u1eeb vi\u1ec7c l\u1ecdc DNS b\u1eb1ng c\u00e1ch thay \u0111\u1ed5i c\u00e0i \u0111\u1eb7t DNS c\u1ee7a h\u1ecd m\u00e0 kh\u00f4ng c\u1ea7n c\u00e0i \u0111\u1eb7t ph\u1ea7n m\u1ec1m b\u1ed5 sung.<\/p>\n<\/li>\n<li>\n<p><strong>Ki\u1ec3m so\u00e1t chi ti\u1ebft<\/strong>: L\u1ecdc DNS cho ph\u00e9p qu\u1ea3n tr\u1ecb vi\u00ean t\u1ea1o c\u00e1c quy t\u1eafc l\u1ecdc t\u00f9y ch\u1ec9nh, cung c\u1ea5p kh\u1ea3 n\u0103ng ki\u1ec3m so\u00e1t chi ti\u1ebft \u0111\u1ed1i v\u1edbi vi\u1ec7c truy c\u1eadp trang web.<\/p>\n<\/li>\n<\/ol>\n<h2>C\u00e1c lo\u1ea1i l\u1ecdc DNS<\/h2>\n<p>L\u1ecdc DNS c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i th\u00e0nh nhi\u1ec1u lo\u1ea1i d\u1ef1a tr\u00ean ti\u00eau ch\u00ed \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u1ecdc:<\/p>\n<table>\n<thead>\n<tr>\n<th>Ki\u1ec3u<\/th>\n<th>S\u1ef1 mi\u00eau t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Danh s\u00e1ch \u0111en<\/strong><\/td>\n<td>Ch\u1ee9a danh s\u00e1ch c\u00e1c trang web \u0111\u1ed9c h\u1ea1i ho\u1eb7c kh\u00f4ng mong mu\u1ed1n \u0111\u00e3 bi\u1ebft v\u00e0 b\u1ecb ch\u1eb7n \u0111\u1ec3 ng\u0103n truy c\u1eadp.<\/td>\n<\/tr>\n<tr>\n<td><strong>Danh s\u00e1ch tr\u1eafng<\/strong><\/td>\n<td>Ch\u1ee9a danh s\u00e1ch c\u00e1c trang web \u0111\u01b0\u1ee3c ph\u00ea duy\u1ec7t v\u00e0 ch\u1ec9 nh\u1eefng trang web trong danh s\u00e1ch m\u1edbi \u0111\u01b0\u1ee3c ph\u00e9p truy c\u1eadp, ch\u1eb7n nh\u1eefng trang web kh\u00e1c.<\/td>\n<\/tr>\n<tr>\n<td><strong>D\u1ef1a tr\u00ean danh m\u1ee5c<\/strong><\/td>\n<td>C\u00e1c trang web \u0111\u01b0\u1ee3c nh\u00f3m th\u00e0nh c\u00e1c danh m\u1ee5c (v\u00ed d\u1ee5: m\u1ea1ng x\u00e3 h\u1ed9i, tr\u00f2 ch\u01a1i) v\u00e0 quy\u1ec1n truy c\u1eadp \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t theo t\u1eebng danh m\u1ee5c.<\/td>\n<\/tr>\n<tr>\n<td><strong>D\u1ef1a tr\u00ean t\u1eeb kh\u00f3a<\/strong><\/td>\n<td>L\u1ecdc c\u00e1c trang web d\u1ef1a tr\u00ean c\u00e1c t\u1eeb kh\u00f3a c\u1ee5 th\u1ec3 c\u00f3 trong t\u00ean mi\u1ec1n ho\u1eb7c n\u1ed9i dung c\u1ee7a ch\u00fang.<\/td>\n<\/tr>\n<tr>\n<td><strong>D\u1ef1a tr\u00ean IP<\/strong><\/td>\n<td>Ch\u1eb7n c\u00e1c trang web d\u1ef1a tr\u00ean \u0111\u1ecba ch\u1ec9 IP c\u1ee7a ch\u00fang, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 h\u1eefu \u00edch trong vi\u1ec7c ng\u0103n ch\u1eb7n to\u00e0n b\u1ed9 m\u1ea1ng \u0111\u1ed9c h\u1ea1i.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>C\u00e1ch s\u1eed d\u1ee5ng t\u00ednh n\u0103ng l\u1ecdc DNS v\u00e0 gi\u1ea3i ph\u00e1p cho c\u00e1c v\u1ea5n \u0111\u1ec1 li\u00ean quan<\/h2>\n<p>L\u1ecdc DNS t\u00ecm th\u1ea5y \u1ee9ng d\u1ee5ng trong nhi\u1ec1u t\u00ecnh hu\u1ed1ng kh\u00e1c nhau:<\/p>\n<ol>\n<li>\n<p><strong>b\u1ea3o m\u1eadt m\u1ea1ng<\/strong>: L\u1ecdc DNS l\u00e0m gi\u1ea3m \u0111\u00e1ng k\u1ec3 nguy c\u01a1 \u0111e d\u1ecda m\u1ea1ng b\u1eb1ng c\u00e1ch ch\u1eb7n quy\u1ec1n truy c\u1eadp v\u00e0o c\u00e1c trang web \u0111\u1ed9c h\u1ea1i, b\u1ea3o v\u1ec7 ng\u01b0\u1eddi d\u00f9ng kh\u1ecfi ph\u1ea7n m\u1ec1m \u0111\u1ed9c h\u1ea1i v\u00e0 c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng l\u1eeba \u0111\u1ea3o.<\/p>\n<\/li>\n<li>\n<p><strong>Ki\u1ec3m so\u00e1t c\u1ee7a cha m\u1eb9<\/strong>: Trong c\u00e1c h\u1ed9 gia \u0111\u00ecnh, t\u00ednh n\u0103ng l\u1ecdc DNS c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 b\u1ea3o v\u1ec7 tr\u1ebb em kh\u1ecfi n\u1ed9i dung kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi l\u1ee9a tu\u1ed5i v\u00e0 \u0111\u1ea3m b\u1ea3o m\u00f4i tr\u01b0\u1eddng tr\u1ef1c tuy\u1ebfn an to\u00e0n.<\/p>\n<\/li>\n<li>\n<p><strong>N\u0103ng su\u1ea5t c\u1ee7a nh\u00e2n vi\u00ean<\/strong>: C\u00e1c t\u1ed5 ch\u1ee9c s\u1eed d\u1ee5ng t\u00ednh n\u0103ng l\u1ecdc DNS \u0111\u1ec3 h\u1ea1n ch\u1ebf quy\u1ec1n truy c\u1eadp v\u00e0o c\u00e1c trang web kh\u00f4ng li\u00ean quan \u0111\u1ebfn c\u00f4ng vi\u1ec7c, n\u00e2ng cao s\u1ef1 t\u1eadp trung v\u00e0 n\u0103ng su\u1ea5t c\u1ee7a nh\u00e2n vi\u00ean.<\/p>\n<\/li>\n<\/ol>\n<p>Tuy nhi\u00ean, m\u1ed9t s\u1ed1 th\u00e1ch th\u1ee9c c\u00f3 th\u1ec3 n\u1ea3y sinh khi s\u1eed d\u1ee5ng t\u00ednh n\u0103ng l\u1ecdc DNS:<\/p>\n<ul>\n<li>\n<p><strong>T\u00edch c\u1ef1c sai<\/strong>: \u0110\u00f4i khi, c\u00e1c trang web h\u1ee3p ph\u00e1p c\u00f3 th\u1ec3 b\u1ecb ph\u00e2n lo\u1ea1i sai v\u00e0 b\u1ecb ch\u1eb7n, g\u00e2y b\u1ea5t ti\u1ec7n cho ng\u01b0\u1eddi d\u00f9ng. Vi\u1ec7c c\u1eadp nh\u1eadt th\u01b0\u1eddng xuy\u00ean c\u01a1 s\u1edf d\u1eef li\u1ec7u l\u1ecdc c\u00f3 th\u1ec3 gi\u1ea3m thi\u1ec3u v\u1ea5n \u0111\u1ec1 n\u00e0y.<\/p>\n<\/li>\n<li>\n<p><strong>K\u1ef9 thu\u1eadt n\u00e9 tr\u00e1nh<\/strong>: Ng\u01b0\u1eddi d\u00f9ng n\u00e2ng cao c\u00f3 th\u1ec3 c\u1ed1 g\u1eafng b\u1ecf qua vi\u1ec7c l\u1ecdc DNS b\u1eb1ng nhi\u1ec1u ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c nhau. C\u1eadp nh\u1eadt li\u00ean t\u1ee5c c\u00e1c ch\u00ednh s\u00e1ch l\u1ecdc c\u00f3 th\u1ec3 gi\u00fap gi\u1ea3i quy\u1ebft nh\u1eefng n\u1ed7 l\u1ef1c nh\u01b0 v\u1eady.<\/p>\n<\/li>\n<li>\n<p><strong>L\u01b0u l\u01b0\u1ee3ng \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a<\/strong>: C\u00e1c truy v\u1ea5n DNS \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a v\u00e0 SNI (Ch\u1ec9 b\u00e1o t\u00ean m\u00e1y ch\u1ee7) \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a c\u00f3 th\u1ec3 \u0111\u1eb7t ra th\u00e1ch th\u1ee9c cho vi\u1ec7c l\u1ecdc DNS v\u00ec n\u1ed9i dung b\u1ecb \u1ea9n kh\u1ecfi qu\u00e1 tr\u00ecnh ki\u1ec3m tra. DNS-over-HTTPS (DoH) v\u00e0 DNS-over-TLS (DoT) l\u00e0 c\u00e1c giao th\u1ee9c m\u00e3 h\u00f3a y\u00eau c\u1ea7u x\u1eed l\u00fd chuy\u00ean bi\u1ec7t.<\/p>\n<\/li>\n<\/ul>\n<h2>C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh v\u00e0 so s\u00e1nh v\u1edbi c\u00e1c thu\u1eadt ng\u1eef t\u01b0\u01a1ng t\u1ef1<\/h2>\n<table>\n<thead>\n<tr>\n<th>Thu\u1eadt ng\u1eef<\/th>\n<th>S\u1ef1 mi\u00eau t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>L\u1ecdc DNS<\/strong><\/td>\n<td>Ki\u1ec3m so\u00e1t quy\u1ec1n truy c\u1eadp v\u00e0o c\u00e1c trang web d\u1ef1a tr\u00ean y\u00eau c\u1ea7u DNS, t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt v\u00e0 th\u1ef1c thi c\u00e1c ch\u00ednh s\u00e1ch internet.<\/td>\n<\/tr>\n<tr>\n<td><strong>B\u1ee9c t\u01b0\u1eddng l\u1eeda<\/strong><\/td>\n<td>Cung c\u1ea5p b\u1ea3o m\u1eadt m\u1ea1ng b\u1eb1ng c\u00e1ch gi\u00e1m s\u00e1t v\u00e0 ki\u1ec3m so\u00e1t l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng \u0111\u1ebfn v\u00e0 \u0111i.<\/td>\n<\/tr>\n<tr>\n<td><strong>M\u00e1y ch\u1ee7 proxy<\/strong><\/td>\n<td>Ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t trung gian gi\u1eefa ng\u01b0\u1eddi d\u00f9ng v\u00e0 internet, t\u0103ng c\u01b0\u1eddng quy\u1ec1n ri\u00eang t\u01b0 v\u00e0 v\u01b0\u1ee3t qua c\u00e1c h\u1ea1n ch\u1ebf.<\/td>\n<\/tr>\n<tr>\n<td><strong>L\u1ecdc n\u1ed9i dung<\/strong><\/td>\n<td>C\u1ee5 th\u1ec3 nh\u1eafm m\u1ee5c ti\u00eau v\u00e0 ki\u1ec3m so\u00e1t quy\u1ec1n truy c\u1eadp v\u00e0o n\u1ed9i dung internet, th\u01b0\u1eddng d\u1ef1a tr\u00ean danh m\u1ee5c trang web.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>L\u1ecdc DNS c\u00f3 th\u1ec3 b\u1ed5 sung cho t\u01b0\u1eddng l\u1eeda v\u00e0 l\u1ecdc n\u1ed9i dung b\u1eb1ng c\u00e1ch t\u1eadp trung v\u00e0o c\u00e1c y\u00eau c\u1ea7u DNS, trong khi t\u01b0\u1eddng l\u1eeda ho\u1ea1t \u0111\u1ed9ng \u1edf c\u1ea5p \u0111\u1ed9 m\u1ea1ng v\u00e0 l\u1ecdc n\u1ed9i dung ho\u1ea1t \u0111\u1ed9ng \u1edf l\u1edbp \u1ee9ng d\u1ee5ng.<\/p>\n<h2>Quan \u0111i\u1ec3m v\u00e0 c\u00f4ng ngh\u1ec7 t\u01b0\u01a1ng lai li\u00ean quan \u0111\u1ebfn l\u1ecdc DNS<\/h2>\n<p>T\u01b0\u01a1ng lai c\u1ee7a vi\u1ec7c l\u1ecdc DNS c\u00f3 nh\u1eefng ti\u1ebfn b\u1ed9 \u0111\u1ea7y h\u1ee9a h\u1eb9n:<\/p>\n<ol>\n<li>\n<p><strong>T\u00edch h\u1ee3p h\u1ecdc m\u00e1y<\/strong>: D\u1ecbch v\u1ee5 l\u1ecdc DNS c\u00f3 th\u1ec3 t\u1eadn d\u1ee5ng c\u00e1c thu\u1eadt to\u00e1n h\u1ecdc m\u00e1y \u0111\u1ec3 c\u1ea3i thi\u1ec7n \u0111\u1ed9 ch\u00ednh x\u00e1c trong vi\u1ec7c ph\u00e2n lo\u1ea1i trang web v\u00e0 x\u00e1c \u0111\u1ecbnh c\u00e1c m\u1ed1i \u0111e d\u1ecda m\u1edbi n\u1ed5i.<\/p>\n<\/li>\n<li>\n<p><strong>H\u1ed7 tr\u1ee3 m\u00e3 h\u00f3a n\u00e2ng cao<\/strong>: Khi c\u00e1c giao th\u1ee9c m\u00e3 h\u00f3a tr\u1edf n\u00ean ph\u1ed5 bi\u1ebfn h\u01a1n, c\u00e1c d\u1ecbch v\u1ee5 l\u1ecdc DNS ph\u1ea3i th\u00edch \u1ee9ng \u0111\u1ec3 x\u1eed l\u00fd c\u00e1c truy v\u1ea5n DNS \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.<\/p>\n<\/li>\n<li>\n<p><strong>Thi\u1ebft b\u1ecb di \u0111\u1ed9ng v\u00e0 IoT<\/strong>: V\u1edbi s\u1ef1 ph\u1ed5 bi\u1ebfn c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb Internet of Things (IoT) v\u00e0 vi\u1ec7c s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb di \u0111\u1ed9ng, vi\u1ec7c l\u1ecdc DNS s\u1ebd \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c b\u1ea3o m\u1eadt c\u00e1c thi\u1ebft b\u1ecb n\u00e0y.<\/p>\n<\/li>\n<\/ol>\n<h2>C\u00e1ch m\u00e1y ch\u1ee7 proxy \u0111\u01b0\u1ee3c li\u00ean k\u1ebft v\u1edbi t\u00ednh n\u0103ng l\u1ecdc DNS<\/h2>\n<p>M\u00e1y ch\u1ee7 proxy, nh\u01b0 OneProxy (oneproxy.pro), \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c l\u1ecdc DNS:<\/p>\n<ol>\n<li>\n<p><strong>Quy\u1ec1n ri\u00eang t\u01b0 n\u00e2ng cao<\/strong>: M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 \u1ea9n \u0111\u1ecba ch\u1ec9 IP c\u1ee7a ng\u01b0\u1eddi d\u00f9ng kh\u1ecfi d\u1ecbch v\u1ee5 l\u1ecdc DNS, cung c\u1ea5p th\u00eam m\u1ed9t l\u1edbp b\u1ea3o m\u1eadt.<\/p>\n<\/li>\n<li>\n<p><strong>B\u1ecf qua c\u00e1c h\u1ea1n ch\u1ebf<\/strong>: M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp n\u1ed9i dung b\u1ecb ch\u1eb7n b\u1eb1ng c\u00e1ch \u0111\u1ecbnh tuy\u1ebfn c\u00e1c y\u00eau c\u1ea7u DNS qua c\u00e1c v\u1ecb tr\u00ed kh\u00e1c nhau, b\u1ecf qua c\u00e1c h\u1ea1n ch\u1ebf l\u1ecdc.<\/p>\n<\/li>\n<li>\n<p><strong>L\u1ecdc d\u1ef1a tr\u00ean v\u1ecb tr\u00ed \u0111\u1ecba l\u00fd<\/strong>: M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 truy c\u1eadp n\u1ed9i dung b\u1ecb gi\u1edbi h\u1ea1n theo khu v\u1ef1c b\u1eb1ng c\u00e1ch \u0111\u1ecbnh tuy\u1ebfn c\u00e1c truy v\u1ea5n DNS th\u00f4ng qua m\u00e1y ch\u1ee7 \u1edf v\u1ecb tr\u00ed mong mu\u1ed1n.<\/p>\n<\/li>\n<\/ol>\n<h2>Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n<p>\u0110\u1ec3 bi\u1ebft th\u00eam th\u00f4ng tin v\u1ec1 l\u1ecdc DNS, b\u1ea1n c\u00f3 th\u1ec3 truy c\u1eadp c\u00e1c t\u00e0i nguy\u00ean sau:<\/p>\n<ol>\n<li><a href=\"https:\/\/en.wikipedia.org\/wiki\/DNS_filtering\" target=\"_new\" rel=\"noopener nofollow\">Wikipedia L\u1ecdc DNS<\/a><\/li>\n<li><a href=\"https:\/\/www.internetsociety.org\/issues\/dns-filtering\/\" target=\"_new\" rel=\"noopener nofollow\">X\u00e3 h\u1ed9i Internet \u2013 L\u1ecdc DNS<\/a><\/li>\n<\/ol>\n<p>L\u1ecdc DNS l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 kh\u00f4ng th\u1ec3 thi\u1ebfu trong b\u1ed1i c\u1ea3nh internet ng\u00e0y nay, mang l\u1ea1i tr\u1ea3i nghi\u1ec7m duy\u1ec7t web an to\u00e0n h\u01a1n v\u00e0 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t nhi\u1ec1u h\u01a1n. Khi c\u00f4ng ngh\u1ec7 ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n, l\u1ecdc DNS s\u1ebd v\u1eabn l\u00e0 m\u1ed9t th\u00e0nh ph\u1ea7n quan tr\u1ecdng trong qu\u1ea3n l\u00fd truy c\u1eadp v\u00e0 b\u1ea3o m\u1eadt internet.<\/p>","protected":false},"featured_media":468243,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-476893","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>DNS Filtering: Enhancing Internet Security and Access Control<\/mark>","faq_items":[{"question":"What is DNS filtering, and how does it work?","answer":"<p>DNS filtering is a process that selectively allows or denies access to certain websites based on predefined rules. It operates at the domain name system (DNS) level, acting as a gatekeeper between users and the internet. When a user tries to access a website, their DNS request is intercepted by a filtering service like OneProxy, which checks the requested domain against its database and applies filtering rules to either allow or deny access.<\/p>"},{"question":"What are the key features of DNS filtering?","answer":"<p>DNS filtering offers several important features, including real-time protection from cyber threats, scalability for use in large networks, ease of deployment by simply changing DNS settings, and granular control through custom filtering rules.<\/p>"},{"question":"What are the different types of DNS filtering?","answer":"<p>DNS filtering can be categorized into various types:<\/p><ol><li>Blacklist: Blocks known malicious or unwanted websites.<\/li><li>Whitelist: Allows access only to approved websites on the list.<\/li><li>Category-based: Controls access per website category (e.g., social media, gaming).<\/li><li>Keyword-based: Filters websites based on specific keywords in their domain names or content.<\/li><li>IP-based: Blocks websites based on their IP addresses.<\/li><\/ol>"},{"question":"How is DNS filtering used?","answer":"<p>DNS filtering finds application in different scenarios:<\/p><ol><li>Internet Security: Protects users from accessing harmful or malicious websites.<\/li><li>Parental Control: Safeguards children from inappropriate content.<\/li><li>Employee Productivity: Restricts access to non-work-related websites.<\/li><\/ol>"},{"question":"What are the challenges related to DNS filtering?","answer":"<p>While DNS filtering enhances internet security, some challenges may arise, including false positives (legitimate websites being blocked), evasion techniques employed by advanced users, and handling encrypted DNS queries and SNI.<\/p>"},{"question":"How does DNS filtering compare to other security measures?","answer":"<p>DNS filtering complements firewalls and content filtering. While firewalls monitor network traffic, content filtering focuses on application-layer control, and DNS filtering targets DNS requests.<\/p>"},{"question":"What are the future prospects of DNS filtering?","answer":"<p>The future of DNS filtering includes machine learning integration for improved accuracy, enhanced support for encryption protocols, and its vital role in securing IoT and mobile devices.<\/p>"},{"question":"How do proxy servers relate to DNS filtering?","answer":"<p>Proxy servers, like OneProxy, work in conjunction with DNS filtering to provide enhanced privacy, bypass filtering restrictions, and access region-restricted content by routing DNS queries through different locations.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/476893","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/476893\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/468243"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=476893"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}