{"id":476949,"date":"2023-08-09T09:05:36","date_gmt":"2023-08-09T09:05:36","guid":{"rendered":""},"modified":"2023-09-05T11:13:44","modified_gmt":"2023-09-05T11:13:44","slug":"dns-txt-record","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/dns-txt-record\/","title":{"rendered":"B\u1ea3n ghi DNS TXT"},"content":{"rendered":"<p>B\u1ea3n ghi DNS TXT (v\u0103n b\u1ea3n) l\u00e0 m\u1ed9t lo\u1ea1i b\u1ea3n ghi t\u00e0i nguy\u00ean trong H\u1ec7 th\u1ed1ng t\u00ean mi\u1ec1n (DNS), d\u1ecbch v\u1ee5 th\u01b0 m\u1ee5c c\u1ee7a Internet. Nh\u1eefng b\u1ea3n ghi n\u00e0y cung c\u1ea5p d\u1eef li\u1ec7u m\u00e0 con ng\u01b0\u1eddi c\u00f3 th\u1ec3 \u0111\u1ecdc \u0111\u01b0\u1ee3c \u0111\u1ed1i v\u1edbi c\u00e1c ngu\u1ed3n b\u00ean ngo\u00e0i mi\u1ec1n, th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho nhi\u1ec1u lo\u1ea1i bi\u1ec7n ph\u00e1p x\u00e1c minh, c\u1ea5u h\u00ecnh v\u00e0 b\u1ea3o m\u1eadt kh\u00e1c nhau.<\/p>\n<h2>Ngu\u1ed3n g\u1ed1c v\u00e0 l\u1ecbch s\u1eed ban \u0111\u1ea7u c\u1ee7a b\u1ea3n ghi DNS TXT<\/h2>\n<p>Kh\u00e1i ni\u1ec7m v\u1ec1 b\u1ea3n ghi DNS TXT l\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u01b0\u1ee3c gi\u1edbi thi\u1ec7u khi DNS ra \u0111\u1eddi. DNS \u0111\u01b0\u1ee3c Paul Mockapetris, m\u1ed9t nh\u00e0 ti\u00ean phong v\u1ec1 Internet, ph\u00e1c th\u1ea3o v\u00e0o n\u0103m 1983 \u0111\u1ec3 gi\u1ea3i quy\u1ebft c\u00e1c v\u1ea5n \u0111\u1ec1 li\u00ean quan \u0111\u1ebfn quy m\u00f4 ng\u00e0y c\u00e0ng t\u0103ng v\u00e0 \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a vi\u1ec7c \u00e1nh x\u1ea1 t\u00ean m\u00e1y ch\u1ee7 Internet. B\u1ea3n ghi DNS TXT, nh\u01b0 m\u1ed9t ph\u1ea7n c\u1ee7a thi\u1ebft k\u1ebf DNS ban \u0111\u1ea7u, cho ph\u00e9p v\u0103n b\u1ea3n t\u00f9y \u00fd \u0111\u01b0\u1ee3c li\u00ean k\u1ebft v\u1edbi t\u00ean m\u00e1y ch\u1ee7.<\/p>\n<p>\u0110\u1ec1 c\u1eadp \u0111\u1ea7u ti\u00ean v\u1ec1 b\u1ea3n ghi DNS TXT c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y trong t\u00e0i li\u1ec7u Y\u00eau c\u1ea7u Nh\u1eadn x\u00e9t (RFC) ban \u0111\u1ea7u x\u00e1c \u0111\u1ecbnh giao th\u1ee9c DNS. RFC 1035, xu\u1ea5t b\u1ea3n n\u0103m 1987, cung c\u1ea5p th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u1ec1 \u0111\u1ecbnh d\u1ea1ng v\u00e0 c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c b\u1ea3n ghi DNS kh\u00e1c nhau, bao g\u1ed3m c\u1ea3 b\u1ea3n ghi TXT.<\/p>\n<h2>Kh\u00e1m ph\u00e1 b\u1ea3n ghi DNS TXT<\/h2>\n<p>B\u1ea3n ghi DNS TXT (b\u1ea3n ghi v\u0103n b\u1ea3n) ch\u1ee9a th\u00f4ng tin v\u0103n b\u1ea3n cho m\u1ed9t mi\u1ec1n c\u1ee5 th\u1ec3. V\u0103n b\u1ea3n n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1ecdc b\u1edfi con ng\u01b0\u1eddi v\u00e0 m\u00e1y m\u00f3c v\u00e0 c\u00f3 th\u1ec3 ph\u1ee5c v\u1ee5 nhi\u1ec1u m\u1ee5c \u0111\u00edch kh\u00e1c nhau. V\u00ed d\u1ee5: n\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e1c minh quy\u1ec1n s\u1edf h\u1eefu mi\u1ec1n, \u0111\u1ea3m b\u1ea3o b\u1ea3o m\u1eadt email ho\u1eb7c cung c\u1ea5p th\u00f4ng tin li\u00ean quan \u0111\u1ebfn m\u1ea1ng.<\/p>\n<p>M\u1ed9t trong nh\u1eefng m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t c\u1ee7a b\u1ea3n ghi TXT l\u00e0 b\u1ea3n ghi Khung ch\u00ednh s\u00e1ch ng\u01b0\u1eddi g\u1eedi (SPF), \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 ng\u0103n nh\u1eefng k\u1ebb g\u1eedi th\u01b0 r\u00e1c g\u1eedi email thay m\u1eb7t cho mi\u1ec1n c\u1ee7a b\u1ea1n. M\u1ed9t c\u00e1ch s\u1eed d\u1ee5ng \u0111i\u1ec3n h\u00ecnh kh\u00e1c l\u00e0 c\u00e1c b\u1ea3n ghi X\u00e1c th\u1ef1c, B\u00e1o c\u00e1o v\u00e0 Tu\u00e2n th\u1ee7 Th\u01b0 d\u1ef1a tr\u00ean Mi\u1ec1n (DMARC) gi\u00fap b\u1ea3o v\u1ec7 ng\u01b0\u1eddi g\u1eedi v\u00e0 ng\u01b0\u1eddi nh\u1eadn email kh\u1ecfi th\u01b0 r\u00e1c, gi\u1ea3 m\u1ea1o v\u00e0 l\u1eeba \u0111\u1ea3o.<\/p>\n<h2>C\u1ea5u tr\u00fac b\u00ean trong v\u00e0 ch\u1ee9c n\u0103ng c\u1ee7a b\u1ea3n ghi DNS TXT<\/h2>\n<p>B\u1ea3n ghi DNS TXT \u0111\u01b0\u1ee3c c\u1ea5u tr\u00fac g\u1ed3m ba th\u00e0nh ph\u1ea7n: t\u00ean mi\u1ec1n, lo\u1ea1i b\u1ea3n ghi (TXT) v\u00e0 (c\u00e1c) gi\u00e1 tr\u1ecb v\u0103n b\u1ea3n. T\u00ean mi\u1ec1n ch\u1ec9 \u0111\u1ecbnh m\u00e1y ch\u1ee7 l\u01b0u tr\u1eef, c\u00f2n lo\u1ea1i b\u1ea3n ghi l\u00e0 TXT. Gi\u00e1 tr\u1ecb v\u0103n b\u1ea3n l\u00e0 m\u1ed9t chu\u1ed7i th\u00f4ng tin ph\u1ee5c v\u1ee5 m\u1ed9t m\u1ee5c \u0111\u00edch c\u1ee5 th\u1ec3 d\u1ef1a tr\u00ean \u0111\u1ecbnh d\u1ea1ng c\u1ee7a n\u00f3 v\u00e0 c\u00e1c d\u1ecbch v\u1ee5 di\u1ec5n gi\u1ea3i n\u00f3.<\/p>\n<p>Ch\u1ee9c n\u0103ng c\u1ee7a b\u1ea3n ghi DNS TXT ph\u1ee5 thu\u1ed9c v\u00e0o m\u1ee5c \u0111\u00edch c\u1ee7a n\u00f3. Khi m\u1ed9t d\u1ecbch v\u1ee5 c\u1ea7n x\u00e1c minh th\u00f4ng tin v\u1ec1 m\u1ed9t mi\u1ec1n, n\u00f3 s\u1ebd th\u1ef1c hi\u1ec7n tra c\u1ee9u DNS cho b\u1ea3n ghi TXT t\u1ea1i mi\u1ec1n \u0111\u00f3. M\u00e1y ch\u1ee7 DNS ph\u1ea3n h\u1ed3i v\u1edbi gi\u00e1 tr\u1ecb c\u1ee7a b\u1ea3n ghi TXT, sau \u0111\u00f3 d\u1ecbch v\u1ee5 s\u1ebd x\u00e1c minh gi\u00e1 tr\u1ecb n\u00e0y.<\/p>\n<h2>C\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a B\u1ea3n ghi DNS TXT<\/h2>\n<p>T\u00ednh linh ho\u1ea1t c\u1ee7a b\u1ea3n ghi DNS TXT l\u00e0 m\u1ed9t trong nh\u1eefng t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a ch\u00fang, cho ph\u00e9p ch\u00fang ph\u1ee5c v\u1ee5 nhi\u1ec1u m\u1ee5c \u0111\u00edch kh\u00e1c nhau d\u1ef1a tr\u00ean nhu c\u1ea7u c\u1ee7a mi\u1ec1n. Nh\u1eefng m\u1ee5c \u0111\u00edch n\u00e0y bao g\u1ed3m nh\u01b0ng kh\u00f4ng gi\u1edbi h\u1ea1n \u1edf:<\/p>\n<ul>\n<li>X\u00e1c minh t\u00ean mi\u1ec1n: Ch\u1ee9ng minh quy\u1ec1n s\u1edf h\u1eefu t\u00ean mi\u1ec1n.<\/li>\n<li>B\u1ea3o m\u1eadt email: B\u1ea3n ghi SPF, DKIM v\u00e0 DMARC.<\/li>\n<li>Th\u00f4ng tin m\u1ea1ng: Chia s\u1ebb th\u00f4ng tin chi ti\u1ebft v\u1ec1 t\u00ean mi\u1ec1n ho\u1eb7c m\u1ea1ng.<\/li>\n<li>Giao th\u1ee9c X\u00e1c th\u1ef1c d\u1ef1a tr\u00ean DNS c\u1ee7a c\u00e1c th\u1ef1c th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u00ean (DANE): Li\u00ean k\u1ebft ch\u1ee9ng ch\u1ec9 TLS v\u1edbi b\u1ea3n ghi DNS.<\/li>\n<\/ul>\n<h2>C\u00e1c lo\u1ea1i b\u1ea3n ghi DNS TXT<\/h2>\n<p>C\u00e1c lo\u1ea1i b\u1ea3n ghi DNS TXT kh\u00e1c nhau th\u01b0\u1eddng th\u1ec3 hi\u1ec7n c\u00e1c c\u00e1ch s\u1eed d\u1ee5ng kh\u00e1c nhau. Ch\u00fang th\u01b0\u1eddng \u0111\u01b0\u1ee3c ph\u00e2n bi\u1ec7t b\u1eb1ng ti\u1ec1n t\u1ed1 tr\u01b0\u1edbc d\u1ea5u \u201c=\u201d trong gi\u00e1 tr\u1ecb c\u1ee7a b\u1ea3n ghi. M\u1ed9t s\u1ed1 v\u00ed d\u1ee5 bao g\u1ed3m:<\/p>\n<table>\n<thead>\n<tr>\n<th>Ghi ti\u1ec1n t\u1ed1<\/th>\n<th>M\u1ee5c \u0111\u00edch<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><code data-no-translation=\"\">v=spf1<\/code><\/td>\n<td>B\u1ea3n ghi SPF \u0111\u1ec3 b\u1ea3o m\u1eadt email<\/td>\n<\/tr>\n<tr>\n<td><code data-no-translation=\"\">DKIM<\/code><\/td>\n<td>B\u1ea3n ghi DKIM \u0111\u1ec3 b\u1ea3o m\u1eadt email<\/td>\n<\/tr>\n<tr>\n<td><code data-no-translation=\"\">v=DMARC1<\/code><\/td>\n<td>B\u1ea3n ghi DMARC \u0111\u1ec3 b\u1ea3o m\u1eadt email<\/td>\n<\/tr>\n<tr>\n<td><code data-no-translation=\"\">google-site-verification<\/code><\/td>\n<td>X\u00e1c minh t\u00ean mi\u1ec1n c\u1ee7a Google<\/td>\n<\/tr>\n<tr>\n<td><code data-no-translation=\"\">facebook-domain-verification<\/code><\/td>\n<td>X\u00e1c minh t\u00ean mi\u1ec1n c\u1ee7a Facebook<\/td>\n<\/tr>\n<tr>\n<td><code data-no-translation=\"\">_acme-challenge<\/code><\/td>\n<td>X\u00e1c minh t\u00ean mi\u1ec1n c\u1ee7a Let&#039;s Encrypt<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>C\u00e1ch s\u1eed d\u1ee5ng, s\u1ef1 c\u1ed1 v\u00e0 gi\u1ea3i ph\u00e1p c\u1ee7a b\u1ea3n ghi DNS TXT<\/h2>\n<p>M\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng ch\u00ednh c\u1ee7a b\u1ea3n ghi DNS TXT l\u00e0 \u0111\u1ec3 x\u00e1c minh t\u00ean mi\u1ec1n, b\u1ea3o m\u1eadt email v\u00e0 cung c\u1ea5p th\u00f4ng tin m\u1ea1ng. Tuy nhi\u00ean, s\u1ef1 c\u1ed1 c\u00f3 th\u1ec3 x\u1ea3y ra n\u1ebfu nh\u1eefng b\u1ea3n ghi n\u00e0y kh\u00f4ng \u0111\u01b0\u1ee3c \u0111\u1ecbnh c\u1ea5u h\u00ecnh ch\u00ednh x\u00e1c, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn vi\u1ec7c x\u00e1c minh mi\u1ec1n kh\u00f4ng th\u00e0nh c\u00f4ng, email b\u1ecb t\u1eeb ch\u1ed1i ho\u1eb7c c\u00e1c h\u1eadu qu\u1ea3 kh\u00f4ng mong mu\u1ed1n kh\u00e1c.<\/p>\n<p>C\u00e1c s\u1ef1 c\u1ed1 th\u01b0\u1eddng g\u1eb7p bao g\u1ed3m gi\u00e1 tr\u1ecb b\u1ea3n ghi kh\u00f4ng ch\u00ednh x\u00e1c, v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n k\u00fd t\u1ef1 (255 k\u00fd t\u1ef1 tr\u00ean m\u1ed7i chu\u1ed7i trong b\u1ea3n ghi TXT) ho\u1eb7c c\u00f3 nhi\u1ec1u b\u1ea3n ghi khi d\u1ecbch v\u1ee5 ch\u1ec9 \u0111\u1ecdc b\u1ea3n ghi \u0111\u1ea7u ti\u00ean. C\u00e1c gi\u1ea3i ph\u00e1p th\u01b0\u1eddng li\u00ean quan \u0111\u1ebfn vi\u1ec7c ki\u1ec3m tra b\u1ea3n ghi TXT \u0111\u1ec3 t\u00ecm l\u1ed7i ch\u00ednh t\u1ea3 ho\u1eb7c l\u1ed7i \u0111\u1ecbnh d\u1ea1ng, chia c\u00e1c b\u1ea3n ghi d\u00e0i th\u00e0nh nhi\u1ec1u chu\u1ed7i ho\u1eb7c \u0111\u1ea3m b\u1ea3o ch\u1ec9 c\u00f3 nh\u1eefng b\u1ea3n ghi c\u1ea7n thi\u1ebft.<\/p>\n<h2>So s\u00e1nh v\u1edbi c\u00e1c \u0111i\u1ec1u kho\u1ea3n t\u01b0\u01a1ng t\u1ef1<\/h2>\n<p>M\u1eb7c d\u00f9 b\u1ea3n ghi TXT l\u00e0 m\u1ed9t lo\u1ea1i b\u1ea3n ghi DNS nh\u01b0ng ch\u00fang kh\u00f4ng ph\u1ea3i l\u00e0 lo\u1ea1i duy nh\u1ea5t. C\u00f3 nhi\u1ec1u lo\u1ea1i b\u1ea3n ghi DNS kh\u00e1c nhau, m\u1ed7i lo\u1ea1i c\u00f3 c\u00e1ch s\u1eed d\u1ee5ng c\u1ee5 th\u1ec3.<\/p>\n<table>\n<thead>\n<tr>\n<th>Lo\u1ea1i b\u1ea3n ghi<\/th>\n<th>M\u1ee5c \u0111\u00edch<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><code data-no-translation=\"\">A<\/code><\/td>\n<td>\u00c1nh x\u1ea1 t\u00ean mi\u1ec1n t\u1edbi \u0111\u1ecba ch\u1ec9 IPv4<\/td>\n<\/tr>\n<tr>\n<td><code data-no-translation=\"\">AAAA<\/code><\/td>\n<td>\u00c1nh x\u1ea1 t\u00ean mi\u1ec1n t\u1edbi \u0111\u1ecba ch\u1ec9 IPv6<\/td>\n<\/tr>\n<tr>\n<td><code data-no-translation=\"\">CNAME<\/code><\/td>\n<td>Tr\u1ecf t\u00ean mi\u1ec1n n\u00e0y sang t\u00ean mi\u1ec1n kh\u00e1c<\/td>\n<\/tr>\n<tr>\n<td><code data-no-translation=\"\">MX<\/code><\/td>\n<td>Chuy\u1ec3n h\u01b0\u1edbng email c\u1ee7a mi\u1ec1n \u0111\u1ebfn m\u00e1y ch\u1ee7 email<\/td>\n<\/tr>\n<tr>\n<td><code data-no-translation=\"\">NS<\/code><\/td>\n<td>\u1ee6y quy\u1ec1n m\u1ed9t v\u00f9ng DNS \u0111\u1ec3 s\u1eed d\u1ee5ng c\u00e1c m\u00e1y ch\u1ee7 t\u00ean c\u00f3 th\u1ea9m quy\u1ec1n nh\u1ea5t \u0111\u1ecbnh<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Quan \u0111i\u1ec3m v\u00e0 c\u00f4ng ngh\u1ec7 t\u01b0\u01a1ng lai li\u00ean quan \u0111\u1ebfn b\u1ea3n ghi DNS TXT<\/h2>\n<p>M\u1eb7c d\u00f9 c\u00e1c b\u1ea3n ghi DNS TXT \u0111\u00e3 \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng Internet nh\u01b0ng v\u1eabn c\u00f3 ti\u1ec1m n\u0103ng cho c\u00e1c \u1ee9ng d\u1ee5ng ti\u1ebfp theo khi c\u00f4ng ngh\u1ec7 ph\u00e1t tri\u1ec3n. V\u00ed d\u1ee5: trong l\u0129nh v\u1ef1c an ninh m\u1ea1ng, b\u1ea3n ghi DNS TXT c\u00f3 th\u1ec3 \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng h\u01a1n trong TLS v\u00e0 c\u00e1c giao th\u1ee9c m\u00e3 h\u00f3a, nh\u01b0 DANE, gi\u00fap b\u1ea3o m\u1eadt Internet tr\u01b0\u1edbc c\u00e1c ch\u1ee9ng ch\u1ec9 gian l\u1eadn.<\/p>\n<p>M\u1ed9t g\u00f3c nh\u00ecn kh\u00e1c l\u00e0 trong th\u1ebf gi\u1edbi blockchain v\u00e0 c\u00f4ng ngh\u1ec7 phi t\u1eadp trung, n\u01a1i c\u00e1c b\u1ea3n ghi TXT c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 li\u00ean k\u1ebft c\u00e1c mi\u1ec1n DNS truy\u1ec1n th\u1ed1ng v\u1edbi c\u00e1c t\u00e0i nguy\u00ean phi t\u1eadp trung.<\/p>\n<h2>M\u00e1y ch\u1ee7 proxy v\u00e0 b\u1ea3n ghi DNS TXT<\/h2>\n<p>C\u00e1c m\u00e1y ch\u1ee7 proxy, gi\u1ed1ng nh\u01b0 c\u00e1c m\u00e1y ch\u1ee7 do OneProxy cung c\u1ea5p, l\u00e0 c\u00e1c m\u00e1y ch\u1ee7 trung gian cung c\u1ea5p t\u00ednh \u1ea9n danh v\u00e0 b\u1ea3o m\u1eadt cho ng\u01b0\u1eddi d\u00f9ng Internet. B\u1ea3n ghi DNS TXT \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong ho\u1ea1t \u0111\u1ed9ng tr\u01a1n tru c\u1ee7a c\u00e1c d\u1ecbch v\u1ee5 \u0111\u00f3. Nh\u1eefng b\u1ea3n ghi n\u00e0y c\u00f3 th\u1ec3 cung c\u1ea5p c\u00e1c chi ti\u1ebft b\u1ea3o m\u1eadt v\u00e0 c\u1ea5u h\u00ecnh quan tr\u1ecdng. V\u00ed d\u1ee5: b\u1ea3n ghi TXT c\u00f3 th\u1ec3 gi\u00fap x\u00e1c th\u1ef1c ch\u1ee9ng ch\u1ec9 SSL \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng b\u1edfi m\u00e1y ch\u1ee7 proxy an to\u00e0n, n\u00e2ng cao \u0111\u1ed9 tin c\u1eady v\u00e0 b\u1ea3o m\u1eadt c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<h2>Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.isc.org\/blogs\/dns-txt-records\/\" target=\"_new\" rel=\"noopener nofollow\">B\u1ea3n ghi DNS TXT \u2013 Hi\u1ec7p h\u1ed9i H\u1ec7 th\u1ed1ng Internet<\/a><\/li>\n<li><a href=\"https:\/\/cloud.google.com\/dns\/docs\/records\/txt\" target=\"_new\" rel=\"noopener nofollow\">B\u1ea3n ghi TXT | \u0110\u00e1m m\u00e2y c\u1ee7a Google<\/a><\/li>\n<li><a href=\"https:\/\/www.cloudflare.com\/learning\/dns\/dns-records\/\" target=\"_new\" rel=\"noopener nofollow\">B\u1ea3n ghi DNS \u0111\u01b0\u1ee3c gi\u1ea3i th\u00edch b\u1eb1ng v\u00ed d\u1ee5<\/a><\/li>\n<li><a href=\"https:\/\/www.dnsmadeeasy.com\/blog\/understanding-dns-record-types\/\" target=\"_new\" rel=\"noopener nofollow\">Hi\u1ec3u c\u00e1c lo\u1ea1i b\u1ea3n ghi DNS<\/a><\/li>\n<li><a href=\"https:\/\/docs.microsoft.com\/en-us\/windows-server\/networking\/dns\/dns-text-txt-records\" target=\"_new\" rel=\"noopener nofollow\">B\u1ea3n ghi DNS TXT | T\u00e0i li\u1ec7u Microsoft<\/a><\/li>\n<\/ul>","protected":false},"featured_media":476950,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-476949","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>DNS TXT Record: An Essential Building Block of Internet Infrastructure<\/mark>","faq_items":[{"question":"What is a DNS TXT Record?","answer":"<p>A DNS TXT record is a type of resource record in the Domain Name System (DNS), which provides human-readable data for sources external to the domain. This text can be used for a variety of purposes such as verification, configuration, and security measures.<\/p>"},{"question":"When was the DNS TXT Record first mentioned?","answer":"<p>The DNS TXT record was first mentioned in the original Request for Comments documents (RFCs) that defined the DNS protocol. The specific document, RFC 1035, was published in 1987.<\/p>"},{"question":"How is a DNS TXT Record structured?","answer":"<p>A DNS TXT record is structured with three components: the domain name, the record type (TXT), and the text value(s). The domain name specifies the host, while the record type is TXT. The text value is a string of information that serves a particular purpose based on its format and the services interpreting it.<\/p>"},{"question":"What are the key features of DNS TXT Records?","answer":"<p>The versatility of DNS TXT records is one of their key features. They can be used for domain verification, email security, providing network information, and even linking TLS certificates to DNS records.<\/p>"},{"question":"What are the different types of DNS TXT Records?","answer":"<p>Different types of DNS TXT records often represent different usages. They can include SPF records for email security, DKIM records for email integrity, DMARC records for email policy enforcement, domain verification records for various web services, and others.<\/p>"},{"question":"What issues can occur with DNS TXT Records and how can they be solved?","answer":"<p>Issues with DNS TXT records can include incorrect record values, exceeding the character limit (255 characters per string in the TXT record), or having multiple records when a service only reads the first one. Solutions often involve checking the TXT record for typos or format errors, splitting long records into multiple strings, or ensuring only necessary records are present.<\/p>"},{"question":"How can DNS TXT Records be used with Proxy Servers?","answer":"<p>DNS TXT records can provide vital configuration and security details for proxy servers. For instance, they can help validate the SSL certificates used by secure proxy servers, enhancing user trust and security.<\/p>"},{"question":"What is the future perspective of DNS TXT Records?","answer":"<p>As technology evolves, there's potential for further applications of DNS TXT records. For example, in cybersecurity, DNS TXT records could play a more significant role in TLS and encryption protocols. Additionally, they might be utilized to link traditional DNS domains with decentralized resources in the world of blockchain and decentralized technology.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/476949","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\/476949\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/476950"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=476949"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}