{"id":18674,"date":"2023-11-30T16:26:13","date_gmt":"2023-11-30T16:26:13","guid":{"rendered":"https:\/\/www.rapidseedbox.com\/?p=18674"},"modified":"2025-11-17T13:50:56","modified_gmt":"2025-11-17T13:50:56","slug":"why-is-nat-not-needed-in-ipv6","status":"publish","type":"post","link":"https:\/\/www.rapidseedbox.com\/vi\/blog\/why-is-nat-not-needed-in-ipv6","title":{"rendered":"T\u1ea1i sao NAT Kh\u00f4ng C\u1ea7n thi\u1ebft trong IPv6?"},"content":{"rendered":"<figure class=\"wp-block-audio\"><audio controls src=\"https:\/\/www.rapidseedbox.com\/wp-content\/uploads\/Sally-Reads-Why-NAT-is-not-needed-in-IPv6-1.mp3\"><\/audio><figcaption class=\"wp-element-caption\"><strong><em>B\u1ea3n Audio (Nh\u1ea5n Play &amp; Cu\u1ed9n Li\u1ec1n M\u1ea1ch \u0110\u1ebfn H\u1ebft B\u00e0i Vi\u1ebft \u25b6\ufe0f\ud83c\udfb6)<\/em><\/strong><\/figcaption><\/figure>\n\n\n\n<p><strong>T\u1ea1i sao NAT kh\u00f4ng c\u1ea7n thi\u1ebft trong IPv6? <\/strong><em>NAT kh\u00f4ng c\u1ea7n thi\u1ebft trong \u0111\u1ecba ch\u1ec9 IPv6 v\u00ec IPv6 c\u00f3 m\u1ed9t kh\u00f4ng gian \u0111\u1ecba ch\u1ec9 r\u1ed9ng l\u1edbn. \u0110i\u1ec1u n\u00e0y cho ph\u00e9p li\u00ean l\u1ea1c tr\u1ef1c ti\u1ebfp gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb, \u0111\u01a1n gi\u1ea3n h\u00f3a m\u1ea1ng v\u00e0 c\u1ea3i thi\u1ec7n t\u00ednh b\u1ea3o m\u1eadt.<\/em><\/p>\n\n\n\n<p><strong>Mu\u1ed1n bi\u1ebft th\u00eam chi ti\u1ebft? <\/strong><\/p>\n\n\n\n<p>H\u00e3y \u0111\u1ecdc ti\u1ebfp.&nbsp;<\/p>\n\n\n\n<p><em>Trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd kh\u00e1m ph\u00e1 NAT trong b\u1ed1i c\u1ea3nh IPv4, c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng v\u00e0 IPv6 l\u00e0m g\u00ec \u0111\u1ec3 lo\u1ea1i b\u1ecf nhu c\u1ea7u c\u1ee7a n\u00f3. Ngo\u00e0i ra, ch\u00fang ta c\u0169ng s\u1ebd kh\u00e1m ph\u00e1 m\u1ed9t s\u1ed1 gi\u1ea3i ph\u00e1p d\u00e0nh cho nh\u1eefng ng\u01b0\u1eddi c\u1ea7n IPv6 nh\u01b0ng v\u1eabn d\u1ef1a v\u00e0o NAT.&nbsp;<\/em><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/www.rapidseedbox.com\/wp-content\/uploads\/Why-is-NAT-not-needed-in-IPv6.png\"><img decoding=\"async\" loading=\"lazy\" width=\"1024\" height=\"531\" src=\"https:\/\/www.rapidseedbox.com\/wp-content\/uploads\/Why-is-NAT-not-needed-in-IPv6-1024x531.png\" alt=\"Why is NAT not needed in IPv6\" class=\"wp-image-25714\" srcset=\"https:\/\/www.rapidseedbox.com\/wp-content\/uploads\/Why-is-NAT-not-needed-in-IPv6-1024x531.png 1024w, https:\/\/www.rapidseedbox.com\/wp-content\/uploads\/Why-is-NAT-not-needed-in-IPv6-300x155.png 300w, https:\/\/www.rapidseedbox.com\/wp-content\/uploads\/Why-is-NAT-not-needed-in-IPv6-1536x796.png 1536w, https:\/\/www.rapidseedbox.com\/wp-content\/uploads\/Why-is-NAT-not-needed-in-IPv6-18x9.png 18w, https:\/\/www.rapidseedbox.com\/wp-content\/uploads\/Why-is-NAT-not-needed-in-IPv6.png 1748w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">M\u1ee5c l\u1ee5c<\/h2>\n\n\n\n<ol>\n<li><a href=\"#01\">Hi\u1ec3u NAT trong B\u1ed1i c\u1ea3nh c\u1ee7a IPv4<\/a><\/li>\n\n\n\n<li><a href=\"#02\">T\u1ea1i sao NAT kh\u00f4ng c\u1ea7n thi\u1ebft trong IPv6?<\/a>\n<ul>\n<li>Kh\u00f4ng gian \u0110\u1ecba ch\u1ec9 R\u1ed9ng l\u1edbn<\/li>\n\n\n\n<li>B\u1ea3o m\u1eadt N\u00e2ng cao<\/li>\n\n\n\n<li>K\u1ebft n\u1ed1i \u0110\u01a1n gi\u1ea3n v\u00e0 Thi\u1ebft k\u1ebf M\u1ea1ng<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><a href=\"#03\">Gi\u1ea3i ph\u00e1p Thay th\u1ebf cho NAT trong IPv6<\/a><\/li>\n\n\n\n<li><a href=\"#04\">C\u00e2u h\u1ecfi Th\u01b0\u1eddng g\u1eb7p (FAQ)<\/a><\/li>\n\n\n\n<li><a href=\"#05\">K\u1ebft lu\u1eadn.<\/a><\/li>\n<\/ol>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"01\">1. Hi\u1ec3u NAT trong B\u1ed1i c\u1ea3nh c\u1ee7a IPv4&nbsp;<\/h2>\n\n\n\n<p>IPv4 c\u00f3 c\u1ea5u tr\u00fac \u0111\u1ecba ch\u1ec9 32 bit, cho ph\u00e9p 4,3 t\u1ef7 \u0111\u1ecba ch\u1ec9 duy nh\u1ea5t. \u0110\u00f3 qu\u1ea3 th\u1ef1c l\u00e0 m\u1ed9t con s\u1ed1 l\u1edbn. Nh\u01b0ng th\u1eadt \u0111\u00e1ng bu\u1ed3n, cho \u0111\u1ebfn th\u1eddi \u0111i\u1ec3m hi\u1ec7n nay, con s\u1ed1 \u0111\u00f3 (m\u00e0 IPv4 cung c\u1ea5p) v\u1eabn ch\u01b0a \u0111\u1ee7 l\u1edbn \u0111\u1ec3 ph\u1ee5c v\u1ee5 cho t\u1ed1c \u0111\u1ed9 Internet ng\u00e0y c\u00e0ng cao. C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u IP t\u1eeb nh\u1eefng n\u0103m 80 \u0111\u00e3 bi\u1ebft \u0111\u1ebfn \u0111i\u1ec1u n\u00e0y n\u00ean h\u1ecd \u0111\u00e3 \u0111\u01b0a <a href=\"https:\/\/www.rapidseedbox.com\/vi\/ipv4-rental\/?blog=why-is-nat-not-needed-in-ipv6\" target=\"_blank\" rel=\"noreferrer noopener\">IPv6<\/a> v\u00e0o \u201cm\u1ed9t ng\u00e0y n\u00e0o \u0111\u00f3\u201d \u0111\u1ec3 thay th\u1ebf IPv4.<\/p>\n\n\n\n<p>V\u00ec v\u1eady, IPv6 c\u00f3 h\u1ec7 th\u1ed1ng \u0111\u1ecba ch\u1ec9 128-bit. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 IPv6 bao ph\u1ee7 kh\u00f4ng gian \u0111\u1ecba ch\u1ec9 l\u1edbn h\u01a1n nhi\u1ec1u so v\u1edbi IPv4 (<a href=\"https:\/\/www.rapidseedbox.com\/vi\/blog\/ipv6-vs-ipv4\">IPv6  v\u1edbi IPv4<\/a>). Hi\u1ec7n t\u1ea1i (v\u00e0 trong m\u1ed9t th\u1eddi gian d\u00e0i), IPv6 s\u1ebd gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 thi\u1ebfu h\u1ee5t \u0111\u1ecba ch\u1ec9 v\u00e0 gi\u00fap d\u1ec5 d\u00e0ng h\u01a1n trong vi\u1ec7c \u0111\u1ecbnh tuy\u1ebfn v\u00e0 qu\u1ea3n l\u00fd m\u1ea1ng.<\/p>\n\n\n\n<p>Nh\u01b0ng vi\u1ec7c tri\u1ec3n khai IPv6 tr\u00ean to\u00e0n b\u1ed9 Internet th\u00ec n\u00f3i d\u1ec5 h\u01a1n l\u00e0m (<a href=\"https:\/\/www.rapidseedbox.com\/vi\/blog\/ipv6-migration\">Chuy\u1ec3n \u0111\u1ed5i sang IV06 v\u00e0 L\u1ee3i \u00edch<\/a>). Tr\u00ean th\u1ef1c t\u1ebf, c\u00f3 h\u00e0ng t\u1ef7 d\u1ecbch v\u1ee5, thi\u1ebft b\u1ecb v\u00e0 \u1ee9ng d\u1ee5ng v\u1eabn li\u00ean l\u1ea1c v\u1edbi nhau b\u1eb1ng IPv4. <strong>V\u00ec v\u1eady, NAT (D\u1ecbch \u0110\u1ecba ch\u1ec9 M\u1ea1ng) <strong>hay c\u00f2n g\u1ecdi l\u00e0 NAT44,<\/strong><\/strong> <strong>v\u00e0 c\u00e1c c\u00e1ch gi\u1ea3i quy\u1ebft kh\u00e1c \u0111\u01b0\u1ee3c t\u1ea1o ra nh\u01b0 nh\u1eefng gi\u1ea3i ph\u00e1p t\u1ea1m th\u1eddi.&nbsp;<\/strong><\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>a. NAT gi\u1ea3i quy\u1ebft \u0111\u01b0\u1ee3c v\u1ea5n \u0111\u1ec1 g\u00ec?&nbsp;<\/strong><\/h4>\n\n\n\n<p>NAT (D\u1ecbch \u0110\u1ecba ch\u1ec9 M\u1ea1ng) l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 l\u1edbn \u0111\u1ed1i v\u1edbi m\u1ea1ng IPv4. <strong>C\u00e1c router ho\u1eb7c m\u00e1y ch\u1ee7 s\u1eed d\u1ee5ng n\u00f3 \u0111\u1ec3 d\u1ecbch c\u00e1c \u0111\u1ecba ch\u1ec9 IP ri\u00eang, c\u1ee5c b\u1ed9 sang \u0111\u1ecba ch\u1ec9 IP c\u00f4ng c\u1ed9ng v\u00e0 ng\u01b0\u1ee3c l\u1ea1i. <\/strong>N\u00f3i c\u00e1ch kh\u00e1c, NAT cung c\u1ea5p c\u00e1ch chia s\u1ebb m\u1ed9t \u0111\u1ecba ch\u1ec9 IP c\u00f4ng c\u1ed9ng v\u1edbi nhi\u1ec1u thi\u1ebft b\u1ecb tr\u00ean m\u1ea1ng c\u1ee5c b\u1ed9. V\u00ec v\u1eady, m\u1ed9t nh\u00e0 (nhi\u1ec1u thi\u1ebft b\u1ecb, nhi\u1ec1u IP ri\u00eang) = m\u1ed9t IP c\u00f4ng c\u1ed9ng. Ngo\u00e0i ra c\u00f2n c\u00f3 <a href=\"https:\/\/www.rapidseedbox.com\/vi\/blog\/cgnat\" target=\"_blank\" rel=\"noreferrer noopener\">NAT Quy m\u00f4 L\u1edbn (CGNAT)<\/a> th\u1ef1c hi\u1ec7n vi\u1ec7c n\u00e0y \u1edf quy m\u00f4 l\u1edbn h\u01a1n nhi\u1ec1u. C\u00e1c c\u1ed9ng \u0111\u1ed3ng, v\u00f9ng l\u00e2n c\u1eadn v\u00e0 to\u00e0n b\u1ed9 khu v\u1ef1c chia s\u1ebb m\u1ed9t IP c\u00f4ng c\u1ed9ng duy nh\u1ea5t th\u00f4ng qua CGNAT.&nbsp;<\/p>\n\n\n\n<p>Nh\u01b0 \u0111\u00e3 n\u00f3i tr\u01b0\u1edbc \u0111\u00f3, l\u00fd do \u0111\u1eb1ng sau NAT (nh\u01b0 m\u1ed9t lo\u1ea1i gi\u1ea3i ph\u00e1p h\u1ed7 tr\u1ee3 b\u0103ng th\u00f4ng) l\u00e0 \u0111\u1ec3 gi\u00fap gi\u1ea3i quy\u1ebft t\u00ecnh tr\u1ea1ng thi\u1ebfu \u0111\u1ecba ch\u1ec9 IPv4. <strong>Thi\u1ebft k\u1ebf th\u00f4ng minh n\u00e0y kh\u00f4ng ch\u1ec9 l\u01b0u \u0111\u1ecba ch\u1ec9 IPv4 m\u00e0 c\u00f2n b\u1ed5 sung th\u00eam m\u1ed9t l\u1edbp b\u1ea3o m\u1eadt b\u1eb1ng c\u00e1ch \u1ea9n \u0111\u1ecba ch\u1ec9 IP n\u1ed9i b\u1ed9 c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb c\u1ee5c b\u1ed9 kh\u1ecfi Internet.<\/strong><\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>b. NAT ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o \u0111\u1ed1i v\u1edbi IPv4?&nbsp;<\/strong><\/h4>\n\n\n\n<p>H\u00ecnh \u1ea3nh sau \u0111\u00e2y minh h\u1ecda qu\u00e1 tr\u00ecnh NAT trong IPv4:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"982\" height=\"532\" src=\"https:\/\/www.rapidseedbox.com\/wp-content\/uploads\/NAT-in-IPv6-03.png\" alt=\"T\u1ea1i sao NAT kh\u00f4ng c\u1ea7n thi\u1ebft trong IPv6?\" class=\"wp-image-18677\" srcset=\"https:\/\/www.rapidseedbox.com\/wp-content\/uploads\/NAT-in-IPv6-03.png 982w, https:\/\/www.rapidseedbox.com\/wp-content\/uploads\/NAT-in-IPv6-03-300x163.png 300w, https:\/\/www.rapidseedbox.com\/wp-content\/uploads\/NAT-in-IPv6-03-18x10.png 18w\" sizes=\"(max-width: 982px) 100vw, 982px\" \/><\/figure>\n\n\n\n<p><strong>Giao ti\u1ebfp C\u1ee5c b\u1ed9:<\/strong> M\u1ed9t host (m\u00e1y ch\u1ee7) trong m\u1ea1ng ri\u00eang, c\u00f3 \u0111\u1ecba ch\u1ec9 IPv4 ri\u00eang (10.0.0.1), mu\u1ed1n g\u1eedi d\u1eef li\u1ec7u \u0111\u1ebfn server (m\u00e1y ch\u1ee7) tr\u00ean Internet. B\u1ed9 \u0111\u1ecbnh tuy\u1ebfn \u0111\u01b0\u1ee3c \u0111\u1ecbnh c\u1ea5u h\u00ecnh v\u1edbi NAT \u0111\u1ec3 qu\u1ea3n l\u00fd l\u01b0u l\u01b0\u1ee3ng gi\u1eefa m\u1ea1ng ri\u00eang v\u00e0 Internet.<\/p>\n\n\n\n<ul>\n<li><strong>D\u1ecbch G\u00f3i \u0110i: <\/strong>Khi host g\u1eedi d\u1eef li\u1ec7u \u0111\u1ebfn server, g\u00f3i ch\u1ee9a \u0111\u1ecba ch\u1ec9 IP ngu\u1ed3n (10.0.0.1, l\u00e0 \u0111\u1ecba ch\u1ec9 ri\u00eang c\u1ee7a host) v\u00e0 \u0111\u1ecba ch\u1ec9 IP \u0111\u00edch (200.100.10.1, l\u00e0 \u0111\u1ecba ch\u1ec9 c\u00f4ng khai c\u1ee7a server). Khi g\u00f3i \u0111\u1ebfn b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn b\u1eb1ng NAT, b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn s\u1ebd d\u1ecbch \u0111\u1ecba ch\u1ec9 IP ngu\u1ed3n t\u1eeb \u0111\u1ecba ch\u1ec9 ri\u00eang (10.0.0.1) sang \u0111\u1ecba ch\u1ec9 IP c\u00f4ng c\u1ed9ng c\u1ee7a b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn (150.150.0.1). B\u1ea3n d\u1ecbch n\u00e0y cho ph\u00e9p g\u00f3i \u0111\u01b0\u1ee3c \u0111\u1ecbnh tuy\u1ebfn qua Internet \u0111\u1ebfn server.<\/li>\n\n\n\n<li><strong>D\u1ecbch G\u00f3i \u0110\u1ebfn: <\/strong>Khi server tr\u1ea3 l\u1eddi, g\u00f3i \u0111\u1ebfn c\u00f3 \u0111\u1ecba ch\u1ec9 IP c\u1ee7a server l\u00e0 ngu\u1ed3n (200.100.10.1) v\u00e0 \u0111\u1ecba ch\u1ec9 IP c\u00f4ng c\u1ed9ng c\u1ee7a b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn l\u00e0 \u0111\u00edch (150.150.0.1). Khi g\u00f3i n\u00e0y \u0111\u1ebfn b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn NAT, NAT s\u1ebd d\u1ecbch IP \u0111\u00edch tr\u1edf l\u1ea1i \u0111\u1ecba ch\u1ec9 IP ri\u00eang c\u1ee7a host (10.0.0.1). Do \u0111\u00f3, host trong m\u1ea1ng ri\u00eang s\u1ebd nh\u1eadn \u0111\u01b0\u1ee3c ph\u1ea3n h\u1ed3i c\u1ee7a server.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>c. Nh\u1eefng h\u1ea1n ch\u1ebf c\u1ee7a NAT trong IPv4 l\u00e0 g\u00ec?<\/strong><\/h4>\n\n\n\n<p>M\u1eb7c d\u00f9 NAT trong m\u1ea1ng IPv4 c\u00f3 nh\u1eefng l\u1ee3i \u00edch ri\u00eang nh\u01b0ng n\u00f3 c\u0169ng c\u00f3 m\u1ed9t s\u1ed1 nh\u01b0\u1ee3c \u0111i\u1ec3m bao g\u1ed3m \u0111\u1ed9 ph\u1ee9c t\u1ea1p, c\u1ea3n tr\u1edf giao ti\u1ebfp hai \u0111\u1ea7u v\u00e0 c\u00e1c v\u1ea5n \u0111\u1ec1 t\u01b0\u01a1ng th\u00edch. Nh\u1eefng h\u1ea1n ch\u1ebf n\u00e0y n\u00eau b\u1eadt nhu c\u1ea7u v\u1ec1 c\u00e1c gi\u1ea3i ph\u00e1p c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng h\u01a1n nh\u01b0 IPv6.<\/p>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"02\">2. T\u1ea1i sao NAT Kh\u00f4ng C\u1ea7n thi\u1ebft trong IPv6?<\/h2>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>a. Kh\u00f4ng gian \u0110\u1ecba ch\u1ec9 R\u1ed9ng l\u1edbn.<\/strong><\/h4>\n\n\n\n<p>The main reason why NAT is not needed in IPv6 is because IPv6 has a huge address space (340 undecillion addresses, to be precise), which means we don&#8217;t need NAT anymore. NAT was explicitly designed for this, to conserve the limited pool of IPv4s. So, due to this huge number of available <a href=\"https:\/\/www.rapidseedbox.com\/vi\/blog\/what-is-ipv6\" target=\"_blank\" rel=\"noreferrer noopener\">IPv6 addresses<\/a>, any host or user can obtain a public IPv6 network address.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>b. B\u1ea3o m\u1eadt N\u00e2ng cao.<\/strong><\/h4>\n\n\n\n<p>Kh\u00f4ng gi\u1ed1ng nh\u01b0 IPv4, IPv6 c\u00f3 b\u1ea3o m\u1eadt l\u00e0 m\u1ed9t th\u00e0nh ph\u1ea7n c\u01a1 b\u1ea3n, ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 \u0111\u01b0\u1ee3c b\u1ed5 sung sau. IPv6 t\u00edch h\u1ee3p s\u1eb5n c\u00e1c t\u00ednh n\u0103ng b\u1ea3o m\u1eadt (IPsec, m\u00e3 h\u00f3a \u0111\u1ea7u cu\u1ed1i, v\u00e0 kh\u00e1m ph\u00e1 h\u00e0ng x\u00f3m an to\u00e0n). <strong>\u0110i\u1ec1u n\u00e0y t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt t\u1ed5ng th\u1ec3 c\u1ee7a m\u1ea1ng v\u00e0 lo\u1ea1i b\u1ecf s\u1ef1 c\u1ea7n thi\u1ebft c\u1ee7a NAT. <\/strong>M\u1ee5c ti\u00eau c\u1ee7a NAT l\u00e0 gi\u1ea3i quy\u1ebft c\u00e1c h\u1ea1n ch\u1ebf c\u1ee7a IPv4, v\u00e0 b\u1ea3o m\u1eadt m\u00e0 n\u00f3 cung c\u1ea5p ch\u1ec9 l\u00e0 s\u1ea3n ph\u1ea9m ph\u1ee5 c\u1ee7a thi\u1ebft k\u1ebf. M\u1ecdi ng\u01b0\u1eddi \u0111\u01a1n gi\u1ea3n s\u1eed d\u1ee5ng NAT nh\u01b0 m\u1ed9t t\u01b0\u1eddng l\u1eeda m\u1eb7c \u0111\u1ecbnh, v\u00ec n\u00f3 \u1ea9n \u0111\u1ecba ch\u1ec9 IP n\u1ed9i b\u1ed9 kh\u1ecfi c\u00e1c m\u1ed1i \u0111e d\u1ecda t\u1eeb b\u00ean ngo\u00e0i.<\/p>\n\n\n\n<p><strong><em>L\u01b0u \u00fd:<\/em><\/strong><em> H\u00e3y nh\u1edb r\u1eb1ng b\u1ea3o m\u1eadt t\u00edch h\u1ee3p c\u1ee7a IPv6 kh\u00f4ng th\u1ef1c s\u1ef1 thay th\u1ebf cho NAT v\u00ec NAT trong IPv4 \u1ea9n c\u00e1c \u0111\u1ecba ch\u1ec9 IP th\u1ef1c, v\u00e0 IPSec (c\u0169ng c\u00f3 s\u1eb5n cho IPv4) cung c\u1ea5p m\u00e3 h\u00f3a v\u00e0 x\u00e1c th\u1ef1c. Th\u1ef1c t\u1ebf, t\u1eeb g\u00f3c \u0111\u1ed9 thi\u1ebft k\u1ebf m\u1ea1ng, IPSec v\u00e0 NAT th\u1eadm ch\u00ed c\u00f3 th\u1ec3 b\u1ed5 sung cho nhau.&nbsp;<\/em><\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>c. K\u1ebft n\u1ed1i \u0110\u01a1n gi\u1ea3n v\u00e0 Thi\u1ebft k\u1ebf M\u1ea1ng&nbsp;<\/strong><\/h4>\n\n\n\n<p>S\u1ef1 nh\u1ea5n m\u1ea1nh c\u1ee7a IPv6 v\u00e0o vi\u1ec7c c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng k\u1ebft n\u1ed1i \u0111\u1ea7u cu\u1ed1i v\u00e0 thi\u1ebft k\u1ebf m\u1ea1ng \u0111\u01a1n gi\u1ea3n h\u00f3a \u0111\u00e3 ph\u1ee7 nh\u1eadn s\u1ef1 c\u1ea7n thi\u1ebft c\u1ee7a NAT. C\u00e1ch ti\u1ebfp c\u1eadn n\u00e0y t\u0103ng c\u01b0\u1eddng \u0111\u01b0\u1eddng d\u1eabn li\u00ean l\u1ea1c, t\u1ea1o \u0111i\u1ec1u ki\u1ec7n thu\u1eadn l\u1ee3i cho vi\u1ec7c truy\u1ec1n t\u1ea3i theo th\u1eddi gian th\u1ef1c v\u00e0 k\u1ebft n\u1ed1i tr\u1ef1c ti\u1ebfp gi\u1eefa thi\u1ebft b\u1ecb v\u1edbi thi\u1ebft b\u1ecb qua Internet, lo\u1ea1i b\u1ecf c\u00e1c trung gian nh\u01b0 thi\u1ebft b\u1ecb NAT (ho\u1eb7c c\u00e1c gi\u1ea3i ph\u00e1p thay th\u1ebf kh\u00e1c). IPv6 \u0111\u01a1n gi\u1ea3n h\u00f3a thi\u1ebft k\u1ebf m\u1ea1ng b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c \u0111\u1ecba ch\u1ec9 to\u00e0n c\u1ea7u duy nh\u1ea5t cho c\u00e1c thi\u1ebft b\u1ecb, tr\u00e1nh s\u1ef1 ph\u1ee9c t\u1ea1p c\u1ee7a vi\u1ec7c d\u1ecbch \u0111\u1ecba ch\u1ec9 c\u00f3 trong IPv4, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn c\u00e1c v\u1ea5n \u0111\u1ec1 nh\u01b0 NAT k\u00e9p v\u00e0 t\u0103ng kh\u00f3 kh\u0103n khi kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1.<\/p>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"03\">3. Gi\u1ea3i ph\u00e1p Thay th\u1ebf cho NAT trong IPv6<\/h2>\n\n\n\n<p>M\u1eb7c d\u00f9 NAT kh\u00f4ng b\u1eaft bu\u1ed9c \u0111\u1ed1i v\u1edbi h\u1ea7u h\u1ebft c\u00e1c tri\u1ec3n khai IPv6, c\u00f3 m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng ho\u1eb7c thi\u1ebft l\u1eadp m\u1ea1ng nh\u1ea5t \u0111\u1ecbnh trong \u0111\u00f3 ch\u1ee9c n\u0103ng gi\u1ed1ng NAT v\u1eabn h\u1eefu \u00edch. Trong nh\u1eefng tr\u01b0\u1eddng h\u1ee3p nh\u01b0 v\u1eady, c\u00e1c gi\u1ea3i ph\u00e1p nh\u01b0 D\u1ecbch Ti\u1ec1n t\u1ed1 M\u1ea1ng (NPTv6) ho\u1eb7c Giao th\u1ee9c Ki\u1ec3m so\u00e1t C\u1ed5ng (PCP) c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c c\u00e1c m\u1ee5c ti\u00eau t\u01b0\u01a1ng t\u1ef1 m\u00e0 kh\u00f4ng g\u1eb7p nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a NAT truy\u1ec1n th\u1ed1ng trong IPv4. <\/p>\n\n\n\n<p class=\"has-background\" style=\"background-color:#abc6df\"><em><strong>L\u01b0u \u00fd:<\/strong> These solutions should be used with caution and sparingly in IPv6 networks, as the default approach is to rely on the protocol&#8217;s vast address space and end-to-end connectivity. These solutions are not replacements for NAT44, they just aim to facilitate the IPv6 and IPv4 interoperability. <\/em><\/p>\n\n\n\n<ul>\n<li><strong>NPTv6:<\/strong> N\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng khi m\u1ea1ng c\u1ea7n thay \u0111\u1ed5i ti\u1ec1n t\u1ed1 c\u1ee7a \u0111\u1ecba ch\u1ec9 IPv6 m\u00e0 kh\u00f4ng thay \u0111\u1ed5i m\u00e3 \u0111\u1ecbnh danh giao di\u1ec7n. NPTv6 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c t\u00ecnh hu\u1ed1ng nh\u01b0 \u0111\u00e1nh s\u1ed1 l\u1ea1i m\u1ea1ng, \u0111a \u0111\u01b0\u1eddng d\u1eabn v\u00e0 th\u1ef1c thi ch\u00ednh s\u00e1ch.<\/li>\n\n\n\n<li><strong>NAT64<\/strong>: N\u00f3 d\u1ecbch \u0111\u1ecba ch\u1ec9 IPv6 th\u00e0nh \u0111\u1ecba ch\u1ec9 IPv4. \u0110i\u1ec1u n\u00e0y h\u1eefu \u00edch khi cho ph\u00e9p c\u00e1c m\u1ea1ng ch\u1ec9 c\u00f3 IPv6 truy c\u1eadp t\u00e0i nguy\u00ean tr\u00ean m\u1ea1ng IPv4.<\/li>\n\n\n\n<li><strong>PCP<\/strong>: Giao th\u1ee9c \u0110i\u1ec1u khi\u1ec3n C\u1ed5ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u1ea1ng IPv6 \u0111\u1ec3 qu\u1ea3n l\u00fd c\u00e1ch c\u00e1c g\u00f3i \u0111\u1ebfn \u0111\u01b0\u1ee3c chuy\u1ec3n ti\u1ebfp b\u1edfi m\u1ed9t thi\u1ebft b\u1ecb NAT, ch\u1eb3ng h\u1ea1n nh\u01b0 NAT64.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">S\u01a1 \u0111\u1ed3 sau minh h\u1ecda s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa NAT trong IPv4 v\u00e0 hai tr\u01b0\u1eddng h\u1ee3p IPv6.&nbsp;<\/h4>\n\n\n\n<ol>\n<li>NAT trong IPv4<\/li>\n\n\n\n<li>NAT-less IPv6&nbsp;<\/li>\n\n\n\n<li>D\u1ecbch Ti\u1ec1n t\u1ed1 M\u1ea1ng (NPTv6).<\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"993\" height=\"537\" src=\"https:\/\/www.rapidseedbox.com\/wp-content\/uploads\/NAT-in-IPv6-04.png\" alt=\"T\u1ea1i sao NAT kh\u00f4ng c\u1ea7n thi\u1ebft trong IPv6?\" class=\"wp-image-18678\" srcset=\"https:\/\/www.rapidseedbox.com\/wp-content\/uploads\/NAT-in-IPv6-04.png 993w, https:\/\/www.rapidseedbox.com\/wp-content\/uploads\/NAT-in-IPv6-04-300x162.png 300w, https:\/\/www.rapidseedbox.com\/wp-content\/uploads\/NAT-in-IPv6-04-18x10.png 18w\" sizes=\"(max-width: 993px) 100vw, 993px\" \/><figcaption class=\"wp-element-caption\"><em>H\u00ecnh \u1ea3nh gi\u1ea3i th\u00edch s\u1ef1 ph\u1ee5 thu\u1ed9c c\u1ee7a IPv4 v\u00e0o NAT do s\u1ed1 l\u01b0\u1ee3ng \u0111\u1ecba ch\u1ec9 h\u1ea1n ch\u1ebf, tr\u00e1i ng\u01b0\u1ee3c v\u1edbi l\u01b0\u1ee3ng \u0111\u1ecba ch\u1ec9 d\u1ed3i d\u00e0o c\u1ee7a IPv6 th\u01b0\u1eddng lo\u1ea1i b\u1ecf nhu c\u1ea7u v\u1ec1 NAT. Ngo\u00e0i ra, NPTv6 \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb d\u01b0\u1edbi d\u1ea1ng thay th\u1ebf cho c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u1ee5 th\u1ec3.<\/em><\/figcaption><\/figure>\n\n\n\n<p><strong>\u0110\u00e2y l\u00e0 \u00fd ngh\u0129a t\u1eebng ph\u1ea7n c\u1ee7a s\u01a1 \u0111\u1ed3:<\/strong><\/p>\n\n\n\n<ul>\n<li><strong>NAT trong IPv4: <\/strong>S\u01a1 \u0111\u1ed3 m\u1ea1ng \u0111\u1ea7u ti\u00ean bi\u1ec3u th\u1ecb m\u00e1y ch\u1ee7 c\u1ee5c b\u1ed9 \u0111\u1eb1ng sau m\u1ea1ng ri\u00eang \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi m\u1ea1ng IPv4 c\u00f4ng c\u1ed9ng th\u00f4ng qua b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn\/t\u01b0\u1eddng l\u1eeda tri\u1ec3n khai NAT. \u0110\u01b0\u1eddng n\u00e9t \u0111\u1ee9t m\u00e0u \u0111\u1ecf c\u00f3 m\u0169i t\u00ean bi\u1ec3u th\u1ecb qu\u00e1 tr\u00ecnh d\u1ecbch v\u00e0 m\u00e1y ch\u1ee7 t\u1eeb xa tr\u00ean m\u1ea1ng c\u00f4ng c\u1ed9ng \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb l\u00e0m m\u1ee5c ti\u00eau li\u00ean l\u1ea1c.<\/li>\n<\/ul>\n\n\n\n<ul>\n<li><strong>NAT-less IPv6: <\/strong>Ph\u1ea7n th\u1ee9 hai bi\u1ec3u th\u1ecb m\u1ed9t m\u00e1y ch\u1ee7 c\u1ee5c b\u1ed9 c\u00f3 \u0111\u1ecba ch\u1ec9 IPv6 \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i tr\u1ef1c ti\u1ebfp v\u1edbi Internet IPv6 m\u00e0 kh\u00f4ng c\u1ea7n b\u1ea5t k\u1ef3 NAT n\u00e0o v\u00ec IPv6 cho ph\u00e9p m\u1ed9t s\u1ed1 l\u01b0\u1ee3ng l\u1edbn \u0111\u1ecba ch\u1ec9, khi\u1ebfn NAT kh\u00f4ng c\u1ea7n thi\u1ebft cho vi\u1ec7c b\u1ea3o t\u1ed3n \u0111\u1ecba ch\u1ec9. \u0110\u01b0\u1eddng m\u00e0u xanh l\u00e1 c\u00f3 m\u0169i t\u00ean bi\u1ec3u th\u1ecb \u0111\u01b0\u1eddng d\u1eabn tr\u1ef1c ti\u1ebfp, ch\u01b0a \u0111\u01b0\u1ee3c d\u1ecbch gi\u1eefa m\u00e1y ch\u1ee7 c\u1ee5c b\u1ed9 v\u00e0 m\u00e1y ch\u1ee7 t\u1eeb xa. <strong>Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y, m\u1ed7i thi\u1ebft b\u1ecb th\u01b0\u1eddng c\u00f3 m\u1ed9t \u0111\u1ecba ch\u1ec9 IPv6 duy nh\u1ea5t tr\u00ean to\u00e0n c\u1ea7u, cho ph\u00e9p li\u00ean l\u1ea1c tr\u1ef1c ti\u1ebfp t\u1eeb \u0111\u1ea7u \u0111\u1ebfn cu\u1ed1i m\u00e0 kh\u00f4ng c\u1ea7n d\u1ecbch \u0111\u1ecba ch\u1ec9.<\/strong><\/li>\n<\/ul>\n\n\n\n<ul>\n<li><strong>NPTv6: <\/strong>Ph\u1ea7n th\u1ee9 ba bi\u1ec3u th\u1ecb m\u00e1y ch\u1ee7 c\u1ee5c b\u1ed9 trong m\u1ea1ng n\u1ed9i b\u1ed9 IPv6 ph\u00eda sau b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn\/t\u01b0\u1eddng l\u1eeda tri\u1ec3n khai NPTv6, \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi Internet IPv6. NPTv6 l\u00e0 m\u1ed9t c\u01a1 ch\u1ebf d\u1ecbch ti\u1ec1n t\u1ed1 c\u1ee7a \u0111\u1ecba ch\u1ec9 IPv6, t\u01b0\u01a1ng t\u1ef1 nh\u01b0 c\u00e1ch NAT ho\u1ea1t \u0111\u1ed9ng trong IPv4, nh\u01b0ng n\u00f3 gi\u1eef nguy\u00ean ph\u1ea7n m\u00e1y ch\u1ee7 c\u1ee7a \u0111\u1ecba ch\u1ec9. \u0110\u01b0\u1eddng n\u00e9t \u0111\u1ee9t m\u00e0u t\u00edm bi\u1ec3u th\u1ecb qu\u00e1 tr\u00ecnh d\u1ecbch ti\u1ec1n t\u1ed1.<\/li>\n<\/ul>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"04\">4. C\u00e2u h\u1ecfi Th\u01b0\u1eddng g\u1eb7p (FAQ)<\/h2>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>a. B\u1ea1n c\u00f3 th\u1ec3 cho bi\u1ebft m\u1ed9t v\u00ed d\u1ee5 th\u1ef1c t\u1ebf minh h\u1ecda hi\u1ec7u qu\u1ea3 m\u1ea1ng t\u0103ng l\u00ean m\u00e0 kh\u00f4ng c\u1ea7n NAT kh\u00f4ng?<\/strong><\/h4>\n\n\n\n<p>M\u1ed9t v\u00ed d\u1ee5 \u0111i\u1ec3n h\u00ecnh l\u00e0 <a href=\"https:\/\/corporate.comcast.com\/comcast-voices\/ipv6-deployment-technology\" target=\"_blank\" rel=\"noreferrer noopener\">Comcast (now Xfinity)<\/a>, m\u1ed9t trong nh\u1eefng nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 Internet l\u1edbn nh\u1ea5t \u1edf M\u1ef9. H\u1ecd chuy\u1ec3n sang IPv6 v\u00e0 nh\u1eadn th\u1ea5y s\u1ef1 c\u1ea3i thi\u1ec7n l\u1edbn v\u1ec1 hi\u1ec7u su\u1ea5t v\u00e0 qu\u1ea3n l\u00fd m\u1ea1ng. Kh\u00f4ng c\u00f3 NAT trong ki\u1ebfn tr\u00fac IPv6, vi\u1ec7c \u0111\u1ecbnh tuy\u1ebfn tr\u1edf n\u00ean \u0111\u01a1n gi\u1ea3n h\u01a1n, \u0111\u1ed9 tr\u1ec5 gi\u1ea3m xu\u1ed1ng v\u00e0 kh\u1ea3 n\u0103ng k\u1ebft n\u1ed1i \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n cho kh\u00e1ch h\u00e0ng c\u1ee7a h\u1ecd. \u0110i\u1ec1u n\u00e0y cho th\u1ea5y nh\u1eefng \u01b0u \u0111i\u1ec3m th\u1ef1c t\u1ebf c\u1ee7a IPv6 trong c\u00e1c m\u1ea1ng c\u00f3 quy m\u00f4 l\u1edbn v\u00e0 kh\u00f4ng d\u1ef1a v\u00e0o NAT44.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>b. NAT64 l\u00e0 g\u00ec?&nbsp;<\/strong><\/h4>\n\n\n\n<p>NAT64 translates IPv6 addresses to IPv4 addresses, enabling communication between IPv6 and IPv4 devices. This protocol allows IPv6-only devices to access IPv4 resources. NAT64 bridges the IPv4-<a href=\"https:\/\/www.rapidseedbox.com\/blog\/ipv6-transition-mechanisms\" target=\"_blank\" rel=\"noreferrer noopener\">IPv6 transition<\/a>, allowing IPv6-only networks to access IPv4 resources. However, it can introduce complexities such as application compatibility and address exhaustion.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>c. L\u00e0m c\u00e1ch n\u00e0o l\u01b0u l\u01b0\u1ee3ng IPv6 c\u00f3 th\u1ec3 b\u1ecf qua NAT khi k\u1ebft n\u1ed1i v\u1edbi m\u1ea1ng IPv4 v\u00e0 duy tr\u00ec k\u1ebft n\u1ed1i \u0111\u1ea7u cu\u1ed1i?<\/strong><\/h4>\n\n\n\n<p>There are mechanisms in IPv6, such as <a href=\"https:\/\/www.rapidseedbox.com\/blog\/teredo\" target=\"_blank\" rel=\"noreferrer noopener\">Teredo<\/a> and 6to4, that allow IPv6 traffic to traverse NAT devices when connecting to IPv4 networks. These mechanisms help preserve end-to-end connectivity without resorting to NAT in IPv6 networks.<\/p>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"05\">5. K\u1ebft lu\u1eadn.<\/h2>\n\n\n\n<p><strong>M\u1eb7c d\u00f9 NAT \u0111\u00e3 \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c duy tr\u00ec IPv4, nh\u01b0ng gi\u1edd \u0111\u00e2y n\u00f3 tr\u1edf n\u00ean l\u1ed7i th\u1eddi trong <a href=\"https:\/\/www.rapidseedbox.com\/vi\/ipv4-rental\/?blog=why-is-nat-not-needed-in-ipv6\" target=\"_blank\" rel=\"noreferrer noopener\">m\u00f4i tr\u01b0\u1eddng IPv6<\/a>, n\u01a1i m\u1ed7i thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 c\u00f3 \u0111\u1ecba ch\u1ec9 to\u00e0n c\u1ea7u duy nh\u1ea5t c\u1ee7a ri\u00eang m\u00ecnh.<\/strong> S\u1ef1 thay \u0111\u1ed5i n\u00e0y kh\u00f4ng ch\u1ec9 h\u1ee3p l\u00fd h\u00f3a k\u1ebft n\u1ed1i m\u00e0 c\u00f2n b\u00e1o hi\u1ec7u m\u1ed9t k\u1ef7 nguy\u00ean m\u1edbi c\u1ee7a ki\u1ebfn tr\u00fac Internet hi\u1ec7u qu\u1ea3 h\u01a1n, an to\u00e0n h\u01a1n v\u00e0 s\u1eb5n s\u00e0ng x\u1eed l\u00fd s\u1ed1 l\u01b0\u1ee3ng thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i ng\u00e0y c\u00e0ng t\u0103ng. <\/p>\n\n\n\n<p>V\u1edbi c\u00e1c v\u00ed d\u1ee5 v\u1ec1 m\u1ea1ng quy m\u00f4 l\u1edbn v\u00e0 c\u00e1c gi\u1ea3i ph\u00e1p thay th\u1ebf cho c\u00e1c tr\u01b0\u1eddng h\u1ee3p chuy\u1ec3n ti\u1ebfp, vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i sang IPv6 kh\u00f4ng ch\u1ec9 l\u00e0 n\u00e2ng c\u1ea5p k\u1ef9 thu\u1eadt m\u00e0 c\u00f2n l\u00e0 s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ea7n thi\u1ebft cho t\u01b0\u01a1ng lai c\u1ee7a k\u1ebft n\u1ed1i to\u00e0n c\u1ea7u.<\/p>\n\n\n\n<h4 class=\"wp-block-heading has-text-align-center has-background\" style=\"background-color:#b0f2b6\"><strong>Ch\u00e0o t\u1ea1m bi\u1ec7t v\u1edbi nh\u1eefng ph\u1ee9c t\u1ea1p c\u1ee7a NAT<\/strong>! <em><strong>\ud83c\udf10<\/strong><\/em><br><br><em>H\u00e3y kh\u00e1m ph\u00e1 th\u1ebf gi\u1edbi kh\u00f4ng gi\u1edbi h\u1ea1n c\u1ee7a IPv6 v\u1edbi RapidSeedbox! <br><\/em><br>Kh\u00f4ng c\u00f3 trung gian, ch\u1ec9 c\u00f3 quy\u1ec1n s\u1edf h\u1eefu IP tr\u1ef1c ti\u1ebfp.<br>Ch\u00fang t\u00f4i lu\u00f4n h\u1ed7 tr\u1ee3 b\u1ea1n, b\u1ea5t c\u1ee9 l\u00fac n\u00e0o v\u1edbi D\u1ecbch v\u1ee5 H\u1ed7 tr\u1ee3 24\/7.<br>D\u1ecbch v\u1ee5 l\u01b0u tr\u1eef \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh cho v\u1eeba v\u1eb7n.<br>Chi ph\u00ed r\u00f5 r\u00e0ng, kh\u00f4ng b\u1ea5t ng\u1edd.<br><br><em>B\u1eaft \u0111\u1ea7u h\u00e0nh tr\u00ecnh kh\u00f4ng NAT ngay h\u00f4m nay<\/em><\/h4>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-2\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-background wp-element-button\" href=\"https:\/\/www.rapidseedbox.com\/vi\/ipv4-rental\/?promocode=IPV620OFF&amp;billingcycle=monthly#pricing\" style=\"background-color:#22c55e\"><strong>Gh\u00e9 th\u0103m Rapidseedbox ng\u00e0y h\u00f4m nay v\u00e0 nh\u1eadn ngay \u01b0u \u0111\u00e3i gi\u1ea3m 20% cho th\u00e1ng \u0111\u1ea7u ti\u00ean!<\/strong><\/a><\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>NAT kh\u00f4ng c\u1ea7n thi\u1ebft trong \u0111\u1ecba ch\u1ec9 IPv6 v\u00ec IPv6 c\u00f3 m\u1ed9t kh\u00f4ng gian \u0111\u1ecba ch\u1ec9 r\u1ed9ng l\u1edbn. \u0110i\u1ec1u n\u00e0y cho ph\u00e9p li\u00ean l\u1ea1c tr\u1ef1c ti\u1ebfp gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb, \u0111\u01a1n gi\u1ea3n h\u00f3a m\u1ea1ng v\u00e0 c\u1ea3i thi\u1ec7n t\u00ednh b\u1ea3o m\u1eadt.<\/p>","protected":false},"author":145,"featured_media":25714,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[39],"tags":[455,410,735,310,736,688,737,319,453,440,734,454],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Why IPv6 Doesn\u2019t Need NAT: Explained with NAT66 &amp; NPTv6<\/title>\n<meta name=\"description\" content=\"See why IPv6 removes the need for NAT and how routing and security work instead. Learn when NAT66 or NPTv6 apply and if IPv6 uses NAT at all.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.rapidseedbox.com\/vi\/blog\/why-is-nat-not-needed-in-ipv6\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Why IPv6 Doesn\u2019t Need NAT: Explained with NAT66 &amp; NPTv6\" \/>\n<meta property=\"og:description\" content=\"See why IPv6 removes the need for NAT and how routing and security work instead. Learn when NAT66 or NPTv6 apply and if IPv6 uses NAT at all.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.rapidseedbox.com\/vi\/blog\/why-is-nat-not-needed-in-ipv6\" \/>\n<meta property=\"og:site_name\" content=\"RapidSeedbox\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/RapidSeedbox\/\" \/>\n<meta property=\"article:published_time\" content=\"2023-11-30T16:26:13+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-11-17T13:50:56+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.rapidseedbox.com\/wp-content\/uploads\/Why-is-NAT-not-needed-in-IPv6.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1748\" \/>\n\t<meta property=\"og:image:height\" content=\"906\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Diego Asturias\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@rapidseedbox\" \/>\n<meta name=\"twitter:site\" content=\"@rapidseedbox\" \/>\n<meta name=\"twitter:label1\" content=\"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi\" \/>\n\t<meta name=\"twitter:data1\" content=\"Diego Asturias\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc\" \/>\n\t<meta name=\"twitter:data2\" content=\"9 ph\u00fat\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Why IPv6 Doesn\u2019t Need NAT: Explained with NAT66 & NPTv6","description":"See why IPv6 removes the need for NAT and how routing and security work instead. 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