{"id":2048,"date":"2025-10-07T15:11:19","date_gmt":"2025-10-07T08:11:19","guid":{"rendered":"https:\/\/kienthucmo.com\/?p=2048"},"modified":"2026-01-23T23:32:24","modified_gmt":"2026-01-23T16:32:24","slug":"tcp-ip-la-gi-giai-thich-cau-truc-hoat-dong-va-ung-dung-trong-mang-may-tinh","status":"publish","type":"post","link":"https:\/\/kienthucmo.com\/vi\/tcp-ip-la-gi-giai-thich-cau-truc-hoat-dong-va-ung-dung-trong-mang-may-tinh\/","title":{"rendered":"TCP\/IP l\u00e0 g\u00ec? Gi\u1ea3i th\u00edch c\u1ea5u tr\u00fac, ho\u1ea1t \u0111\u1ed9ng v\u00e0 \u1ee9ng d\u1ee5ng trong m\u1ea1ng m\u00e1y t\u00ednh"},"content":{"rendered":"\n<p>Trong th\u1eddi \u0111\u1ea1i s\u1ed1 h\u00f3a, m\u1ea1ng m\u00e1y t\u00ednh \u0111\u00f3ng vai tr\u00f2 c\u1ef1c k\u1ef3 quan tr\u1ecdng, k\u1ebft n\u1ed1i h\u00e0ng t\u1ef7 thi\u1ebft b\u1ecb tr\u00ean to\u00e0n c\u1ea7u. Khi t\u00ecm hi\u1ec3u v\u1ec1 m\u1ea1ng, m\u00ecnh nh\u1eadn th\u1ea5y TCP\/IP l\u00e0 giao th\u1ee9c n\u1ec1n t\u1ea3ng quy\u1ebft \u0111\u1ecbnh c\u00e1ch d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n t\u1ea3i gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb, t\u1eeb m\u00e1y t\u00ednh c\u00e1 nh\u00e2n, \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh, \u0111\u1ebfn c\u00e1c m\u00e1y ch\u1ee7 tr\u00ean Internet.<\/p>\n\n\n\n<p>Hi\u1ec3u r\u00f5 TCP\/IP kh\u00f4ng ch\u1ec9 gi\u00fap ch\u00fang ta bi\u1ebft c\u00e1ch d\u1eef li\u1ec7u \u201c\u0111i\u201d t\u1eeb thi\u1ebft b\u1ecb n\u00e0y sang thi\u1ebft b\u1ecb kh\u00e1c, m\u00e0 c\u00f2n m\u1edf ra c\u01a1 h\u1ed9i kh\u00e1m ph\u00e1 nhi\u1ec1u kh\u00eda c\u1ea1nh kh\u00e1c c\u1ee7a m\u1ea1ng m\u00e1y t\u00ednh, t\u1eeb l\u1eadp tr\u00ecnh m\u1ea1ng, qu\u1ea3n tr\u1ecb m\u1ea1ng, \u0111\u1ebfn b\u1ea3o m\u1eadt v\u00e0 t\u1ed1i \u01b0u hi\u1ec7u su\u1ea5t. B\u00e0i vi\u1ebft n\u00e0y, m\u00ecnh s\u1ebd c\u00f9ng b\u1ea1n t\u00ecm hi\u1ec3u m\u00f4 h\u00ecnh TCP\/IP, t\u1eeb kh\u00e1i ni\u1ec7m, c\u1ea5u tr\u00fac c\u00e1c l\u1edbp, c\u00e1ch d\u1eef li\u1ec7u truy\u1ec1n qua t\u1eebng l\u1edbp, \u0111\u1ebfn nh\u1eefng \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf. \u0110\u1ec3 th\u1ea5y \u0111\u01b0\u1ee3c m\u1ed9t b\u1ee9c tranh to\u00e0n di\u1ec7n v\u1ec1 c\u00e1ch Internet v\u1eadn h\u00e0nh m\u1ed7i ng\u00e0y, c\u0169ng nh\u01b0 n\u1ec1n t\u1ea3ng \u0111\u1ec3 ph\u00e1t tri\u1ec3n c\u00e1c \u1ee9ng d\u1ee5ng m\u1ea1ng trong t\u01b0\u01a1ng lai.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"600\" height=\"337\" src=\"https:\/\/kienthucmo.com\/wp-content\/uploads\/tcp-ip-la-gi.jpg\" alt=\"TCP\/IP l\u00e0 g\u00ec? Gi\u1ea3i th\u00edch c\u1ea5u tr\u00fac, ho\u1ea1t \u0111\u1ed9ng v\u00e0 \u1ee9ng d\u1ee5ng trong m\u1ea1ng m\u00e1y t\u00ednh\" class=\"wp-image-2053\" srcset=\"https:\/\/kienthucmo.com\/wp-content\/uploads\/tcp-ip-la-gi.jpg 600w, https:\/\/kienthucmo.com\/wp-content\/uploads\/tcp-ip-la-gi-300x169.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\">1. Kh\u00e1i ni\u1ec7m TCP\/IP v\u00e0 l\u1ecbch s\u1eed h\u00ecnh th\u00e0nh<\/h2>\n\n\n\n<p><strong>TCP\/IP<\/strong> l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a <strong>Transmission Control Protocol \/ Internet Protocol<\/strong>, l\u00e0 b\u1ed9 giao th\u1ee9c ti\u00eau chu\u1ea9n gi\u00fap c\u00e1c thi\u1ebft b\u1ecb tr\u00ean m\u1ea1ng k\u1ebft n\u1ed1i v\u00e0 trao \u0111\u1ed5i d\u1eef li\u1ec7u v\u1edbi nhau. N\u00f3i c\u00e1ch kh\u00e1c, TCP\/IP ch\u00ednh l\u00e0 \u201cng\u00f4n ng\u1eef chung\u201d \u0111\u1ec3 m\u1ecdi thi\u1ebft b\u1ecb hi\u1ec3u v\u00e0 giao ti\u1ebfp, \u0111\u1ed3ng th\u1eddi l\u00e0 n\u1ec1n t\u1ea3ng quan tr\u1ecdng c\u1ee7a Internet hi\u1ec7n \u0111\u1ea1i.<\/p>\n\n\n\n<p>V\u1ec1 l\u1ecbch s\u1eed, TCP\/IP \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n t\u1eeb d\u1ef1 \u00e1n ARPANET v\u00e0o cu\u1ed1i nh\u1eefng n\u0103m 1960 \u2013 \u0111\u1ea7u nh\u1eefng n\u0103m 1970, v\u1edbi m\u1ee5c ti\u00eau x\u00e2y d\u1ef1ng m\u1ed9t m\u1ea1ng tin c\u1eady k\u1ebft n\u1ed1i c\u00e1c m\u00e1y t\u00ednh c\u1ee7a qu\u00e2n \u0111\u1ed9i v\u00e0 c\u00e1c c\u01a1 s\u1edf nghi\u00ean c\u1ee9u. \u0110\u1ebfn n\u0103m 1983, TCP\/IP ch\u00ednh th\u1ee9c tr\u1edf th\u00e0nh chu\u1ea9n k\u1ebft n\u1ed1i Internet v\u00e0 t\u1eeb \u0111\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i tr\u00ean to\u00e0n c\u1ea7u, m\u1edf ra k\u1ef7 nguy\u00ean c\u1ee7a m\u1ea1ng to\u00e0n c\u1ea7u.<\/p>\n\n\n\n<p>So v\u1edbi m\u00f4 h\u00ecnh OSI 7 l\u1edbp, TCP\/IP g\u1ecdn nh\u1eb9 v\u00e0 th\u1ef1c ti\u1ec5n h\u01a1n, ph\u00f9 h\u1ee3p cho vi\u1ec7c tri\u1ec3n khai tr\u00ean Internet. Trong khi OSI mang t\u00ednh l\u00fd thuy\u1ebft v\u00e0 h\u1ecdc thu\u1eadt, TCP\/IP t\u1eadp trung v\u00e0o c\u00e1ch th\u1ee9c giao ti\u1ebfp th\u1ef1c t\u1ebf gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb, gi\u00fap d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n nhanh ch\u00f3ng v\u00e0 hi\u1ec7u qu\u1ea3. Nh\u1edd t\u00ednh linh ho\u1ea1t v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng, TCP\/IP \u0111\u00e3 tr\u1edf th\u00e0nh ti\u00eau chu\u1ea9n c\u01a1 b\u1ea3n m\u00e0 h\u1ea7u h\u1ebft c\u00e1c h\u1ec7 th\u1ed1ng m\u1ea1ng hi\u1ec7n \u0111\u1ea1i \u0111\u1ec1u d\u1ef1a v\u00e0o, t\u1eeb m\u1ea1ng doanh nghi\u1ec7p \u0111\u1ebfn c\u00e1c d\u1ecbch v\u1ee5 Internet ph\u1ed5 bi\u1ebfn h\u00e0ng ng\u00e0y.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">2. C\u1ea5u tr\u00fac m\u00f4 h\u00ecnh TCP\/IP<\/h2>\n\n\n\n<p>M\u00f4 h\u00ecnh TCP\/IP \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf theo 4 l\u1edbp ch\u00ednh, m\u1ed7i l\u1edbp \u0111\u1ea3m nhi\u1ec7m m\u1ed9t ch\u1ee9c n\u0103ng ri\u00eang, nh\u01b0ng ph\u1ed1i h\u1ee3p ch\u1eb7t ch\u1ebd v\u1edbi nhau \u0111\u1ec3 d\u1eef li\u1ec7u t\u1eeb \u1ee9ng d\u1ee5ng c\u1ee7a ng\u01b0\u1eddi d\u00f9ng \u0111\u01b0\u1ee3c truy\u1ec1n \u0111i an to\u00e0n, hi\u1ec7u qu\u1ea3 v\u00e0 ch\u00ednh x\u00e1c \u0111\u1ebfn \u0111\u00edch cu\u1ed1i c\u00f9ng.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"488\" src=\"https:\/\/kienthucmo.com\/wp-content\/uploads\/TCP_IP-1024x488.png\" alt=\"C\u1ea5u tr\u00fac m\u00f4 h\u00ecnh TCP\/IP\" class=\"wp-image-2051\" srcset=\"https:\/\/kienthucmo.com\/wp-content\/uploads\/TCP_IP-1024x488.png 1024w, https:\/\/kienthucmo.com\/wp-content\/uploads\/TCP_IP-300x143.png 300w, https:\/\/kienthucmo.com\/wp-content\/uploads\/TCP_IP-768x366.png 768w, https:\/\/kienthucmo.com\/wp-content\/uploads\/TCP_IP.png 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">2.1. L\u1edbp Application (\u1ee8ng d\u1ee5ng)<\/h3>\n\n\n\n<p>L\u1edbp <strong>Application<\/strong> cung c\u1ea5p giao di\u1ec7n tr\u1ef1c ti\u1ebfp gi\u1eefa ng\u01b0\u1eddi d\u00f9ng v\u00e0 m\u1ea1ng, cho ph\u00e9p c\u00e1c \u1ee9ng d\u1ee5ng nh\u01b0 tr\u00ecnh duy\u1ec7t web, email, hay ph\u1ea7n m\u1ec1m chat g\u1eedi v\u00e0 nh\u1eadn d\u1eef li\u1ec7u. \u0110\u00e2y l\u00e0 l\u1edbp m\u00e0 d\u1eef li\u1ec7u \u201cb\u1eaft \u0111\u1ea7u cu\u1ed9c h\u00e0nh tr\u00ecnh\u201d t\u1eeb c\u00e1c \u1ee9ng d\u1ee5ng, \u0111\u1ed3ng th\u1eddi c\u0169ng l\u00e0 n\u01a1i x\u1eed l\u00fd c\u00e1c y\u00eau c\u1ea7u c\u1ee7a ng\u01b0\u1eddi d\u00f9ng v\u00e0 \u0111\u1ecbnh d\u1ea1ng d\u1eef li\u1ec7u sao cho ph\u00f9 h\u1ee3p tr\u01b0\u1edbc khi truy\u1ec1n xu\u1ed1ng c\u00e1c l\u1edbp th\u1ea5p h\u01a1n.<\/p>\n\n\n\n<p>C\u00e1c giao th\u1ee9c quan tr\u1ecdng c\u1ee7a l\u1edbp n\u00e0y bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>HTTP\/HTTPS<\/strong>: Duy\u1ec7t web, trao \u0111\u1ed5i th\u00f4ng tin gi\u1eefa tr\u00ecnh duy\u1ec7t v\u00e0 server m\u1ed9t c\u00e1ch an to\u00e0n (HTTPS).<\/li>\n\n\n\n<li><strong>FTP<\/strong>: Truy\u1ec1n file gi\u1eefa m\u00e1y t\u00ednh v\u00e0 server, h\u1ed7 tr\u1ee3 upload v\u00e0 download d\u1eef li\u1ec7u.<\/li>\n\n\n\n<li><strong>SMTP\/POP3\/IMAP<\/strong>: G\u1eedi v\u00e0 nh\u1eadn email, \u0111\u1ea3m b\u1ea3o email \u0111\u01b0\u1ee3c g\u1eedi \u0111\u1ebfn \u0111\u00fang h\u1ed9p th\u01b0 v\u00e0 c\u00f3 th\u1ec3 truy c\u1eadp t\u1eeb nhi\u1ec1u thi\u1ebft b\u1ecb.<\/li>\n\n\n\n<li><strong>DNS<\/strong>: Chuy\u1ec3n \u0111\u1ed5i t\u00ean mi\u1ec1n th\u00e0nh \u0111\u1ecba ch\u1ec9 IP, gi\u00fap \u0111\u1ecbnh tuy\u1ebfn d\u1eef li\u1ec7u ch\u00ednh x\u00e1c \u0111\u1ebfn server \u0111\u00edch.<\/li>\n<\/ul>\n\n\n\n<p>V\u00ed d\u1ee5, khi b\u1ea1n truy c\u1eadp m\u1ed9t trang web, tr\u00ecnh duy\u1ec7t g\u1eedi HTTP request \u0111\u1ebfn server. D\u1eef li\u1ec7u s\u1ebd \u0111\u01b0\u1ee3c \u0111\u00f3ng g\u00f3i, truy\u1ec1n xu\u1ed1ng c\u00e1c l\u1edbp d\u01b0\u1edbi \u0111\u1ec3 \u0111\u1ecbnh tuy\u1ebfn v\u00e0 ki\u1ec3m tra, \u0111\u1ebfn server v\u00e0 nh\u1eadn ph\u1ea3n h\u1ed3i. Nh\u1edd l\u1edbp Application, ch\u00fang ta t\u01b0\u01a1ng t\u00e1c tr\u1ef1c ti\u1ebfp v\u1edbi m\u1ea1ng m\u00e0 kh\u00f4ng c\u1ea7n quan t\u00e2m qu\u00e1 nhi\u1ec1u \u0111\u1ebfn c\u01a1 ch\u1ebf k\u1ef9 thu\u1eadt b\u00ean d\u01b0\u1edbi, \u0111\u1ed3ng th\u1eddi c\u00e1c \u1ee9ng d\u1ee5ng c\u0169ng c\u00f3 th\u1ec3 x\u1eed l\u00fd d\u1eef li\u1ec7u theo nhu c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2.2. L\u1edbp Transport (Giao v\u1eadn)<\/h3>\n\n\n\n<p>L\u1edbp <strong>Transport<\/strong> ch\u1ecbu tr\u00e1ch nhi\u1ec7m \u0111\u1ea3m b\u1ea3o d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n tin c\u1eady v\u00e0 ch\u00ednh x\u00e1c gi\u1eefa hai thi\u1ebft b\u1ecb tr\u00ean m\u1ea1ng. \u0110\u00e2y l\u00e0 l\u1edbp quy\u1ebft \u0111\u1ecbnh d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c ph\u00e2n m\u1ea3nh, ki\u1ec3m tra l\u1ed7i v\u00e0 \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp \u0111\u00fang th\u1ee9 t\u1ef1 tr\u01b0\u1edbc khi \u0111\u1ebfn tay \u1ee9ng d\u1ee5ng c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/p>\n\n\n\n<p>Hai giao th\u1ee9c quan tr\u1ecdng nh\u1ea5t \u1edf l\u1edbp n\u00e0y l\u00e0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>TCP (Transmission Control Protocol):<\/strong>\n<ul class=\"wp-block-list\">\n<li>K\u1ebft n\u1ed1i tin c\u1eady (connection-oriented), thi\u1ebft l\u1eadp \u201cphi\u00ean k\u1ebft\u201d gi\u1eefa hai thi\u1ebft b\u1ecb tr\u01b0\u1edbc khi truy\u1ec1n d\u1eef li\u1ec7u.<\/li>\n\n\n\n<li>\u0110\u1ea3m b\u1ea3o d\u1eef li\u1ec7u \u0111\u1ebfn \u0111\u00fang th\u1ee9 t\u1ef1, kh\u00f4ng b\u1ecb m\u1ea5t m\u00e1t hay tr\u00f9ng l\u1eb7p, th\u00edch h\u1ee3p cho vi\u1ec7c truy\u1ec1n file, email, v\u00e0 web.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>UDP (User Datagram Protocol):<\/strong>\n<ul class=\"wp-block-list\">\n<li>Kh\u00f4ng k\u1ebft n\u1ed1i (connectionless), g\u1eedi d\u1eef li\u1ec7u nhanh nh\u01b0ng kh\u00f4ng \u0111\u1ea3m b\u1ea3o d\u1eef li\u1ec7u \u0111\u1ebfn \u0111\u00edch \u0111\u1ea7y \u0111\u1ee7.<\/li>\n\n\n\n<li>Th\u01b0\u1eddng d\u00f9ng cho \u1ee9ng d\u1ee5ng c\u1ea7n t\u1ed1c \u0111\u1ed9 cao, nh\u01b0 streaming video, game tr\u1ef1c tuy\u1ebfn ho\u1eb7c VoIP, n\u01a1i m\u1ed9t s\u1ed1 g\u00f3i tin m\u1ea5t kh\u00f4ng \u1ea3nh h\u01b0\u1edfng nhi\u1ec1u \u0111\u1ebfn tr\u1ea3i nghi\u1ec7m.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p>L\u1edbp Transport l\u00e0 c\u1ea7u n\u1ed1i quan tr\u1ecdng gi\u1eefa \u1ee9ng d\u1ee5ng v\u00e0 m\u1ea1ng, gi\u00fap c\u00e2n b\u1eb1ng gi\u1eefa t\u1ed1c \u0111\u1ed9 v\u00e0 \u0111\u1ed9 tin c\u1eady t\u00f9y theo nhu c\u1ea7u c\u1ee7a t\u1eebng lo\u1ea1i d\u1eef li\u1ec7u.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1000\" height=\"700\" src=\"https:\/\/kienthucmo.com\/wp-content\/uploads\/Giao-thuc-TCPIP-la-gi.jpg\" alt=\"C\u1ea5u tr\u00fac m\u00f4 h\u00ecnh TCP\/IP\" class=\"wp-image-2055\" srcset=\"https:\/\/kienthucmo.com\/wp-content\/uploads\/Giao-thuc-TCPIP-la-gi.jpg 1000w, https:\/\/kienthucmo.com\/wp-content\/uploads\/Giao-thuc-TCPIP-la-gi-300x210.jpg 300w, https:\/\/kienthucmo.com\/wp-content\/uploads\/Giao-thuc-TCPIP-la-gi-768x538.jpg 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">2.3. L\u1edbp Internet (M\u1ea1ng)<\/h3>\n\n\n\n<p>L\u1edbp <strong>Internet<\/strong> ch\u1ecbu tr\u00e1ch nhi\u1ec7m \u0111\u1ecbnh tuy\u1ebfn v\u00e0 chuy\u1ec3n g\u00f3i d\u1eef li\u1ec7u (packet) gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb tr\u00ean m\u1ea1ng, \u0111\u1ea3m b\u1ea3o d\u1eef li\u1ec7u t\u1eeb ngu\u1ed3n \u0111\u1ebfn \u0111\u00edch m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c, ngay c\u1ea3 khi \u0111i qua nhi\u1ec1u m\u1ea1ng trung gian. \u0110\u00e2y l\u00e0 l\u1edbp ch\u1ecbu tr\u00e1ch nhi\u1ec7m \u201cch\u1ecdn \u0111\u01b0\u1eddng \u0111i\u201d cho d\u1eef li\u1ec7u, gi\u1ed1ng nh\u01b0 h\u1ec7 th\u1ed1ng \u0111i\u1ec1u h\u01b0\u1edbng c\u1ee7a Internet.<\/p>\n\n\n\n<p>C\u00e1c giao th\u1ee9c ch\u00ednh c\u1ee7a l\u1edbp n\u00e0y bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>IP (Internet Protocol)<\/strong>: Cung c\u1ea5p \u0111\u1ecba ch\u1ec9 IP cho c\u00e1c thi\u1ebft b\u1ecb, bao g\u1ed3m c\u1ea3 IPv4 v\u00e0 IPv6, \u0111\u1ec3 \u0111\u1ecbnh tuy\u1ebfn d\u1eef li\u1ec7u \u0111\u1ebfn \u0111\u00fang thi\u1ebft b\u1ecb \u0111\u00edch.<\/li>\n\n\n\n<li><strong>ICMP (Internet Control Message Protocol)<\/strong>: D\u00f9ng \u0111\u1ec3 g\u1eedi c\u00e1c th\u00f4ng b\u00e1o v\u1ec1 l\u1ed7i m\u1ea1ng ho\u1eb7c ki\u1ec3m tra k\u1ebft n\u1ed1i, v\u00ed d\u1ee5 nh\u01b0 l\u1ec7nh ping.<\/li>\n<\/ul>\n\n\n\n<p>Khi m\u1ed9t g\u00f3i d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c g\u1eedi \u0111i, IP s\u1ebd \u0111\u00f3ng g\u00f3i th\u00f4ng tin \u0111\u1ecba ch\u1ec9 ngu\u1ed3n v\u00e0 \u0111\u00edch, gi\u00fap d\u1eef li\u1ec7u \u201c\u0111i \u0111\u00fang \u0111\u01b0\u1eddng\u201d qua c\u00e1c router. C\u00e1c c\u00f4ng c\u1ee5 nh\u01b0 ping ho\u1eb7c traceroute minh h\u1ecda c\u00e1ch d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n qua nhi\u1ec1u router, cho th\u1ea5y qu\u00e1 tr\u00ecnh \u0111\u1ecbnh tuy\u1ebfn v\u00e0 ki\u1ec3m tra k\u1ebft n\u1ed1i ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o.<\/p>\n\n\n\n<p>Nh\u1edd l\u1edbp Internet, c\u00e1c m\u1ea1ng kh\u00e1c nhau c\u00f3 th\u1ec3 k\u1ebft n\u1ed1i v\u1edbi nhau m\u1ed9t c\u00e1ch li\u00ean t\u1ee5c v\u00e0 linh ho\u1ea1t, d\u00f9 c\u00f3 s\u1eed d\u1ee5ng h\u1ea1 t\u1ea7ng kh\u00e1c nhau. L\u1edbp n\u00e0y c\u0169ng gi\u00fap qu\u1ea3n l\u00fd l\u01b0u l\u01b0\u1ee3ng d\u1eef li\u1ec7u, t\u1ed1i \u01b0u h\u00f3a \u0111\u01b0\u1eddng \u0111i \u0111\u1ec3 gi\u1ea3m t\u1eafc ngh\u1ebdn v\u00e0 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t truy\u1ec1n t\u1ea3i tr\u00ean Internet.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2.4. L\u1edbp Network Access \/ Link (Li\u00ean k\u1ebft m\u1ea1ng)<\/h3>\n\n\n\n<p>L\u1edbp <strong>Network Access<\/strong> hay Link ch\u1ecbu tr\u00e1ch nhi\u1ec7m truy\u1ec1n d\u1eef li\u1ec7u tr\u00ean m\u1ea1ng v\u1eadt l\u00fd, t\u1eeb c\u00e1p Ethernet, s\u00f3ng Wi-Fi, \u0111\u1ebfn c\u00e1c thi\u1ebft b\u1ecb nh\u01b0 switch hay router. \u0110\u00e2y l\u00e0 l\u1edbp g\u1ea7n v\u1edbi ph\u1ea7n c\u1ee9ng nh\u1ea5t, \u0111\u1ea3m b\u1ea3o d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c g\u1eedi \u0111i ch\u00ednh x\u00e1c tr\u00ean m\u00f4i tr\u01b0\u1eddng v\u1eadt l\u00fd v\u00e0 t\u1edbi \u0111\u00fang thi\u1ebft b\u1ecb trong m\u1ea1ng c\u1ee5c b\u1ed9.<\/p>\n\n\n\n<p>C\u00e1c giao th\u1ee9c ph\u1ed5 bi\u1ebfn bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ethernet<\/strong>: K\u1ebft n\u1ed1i m\u1ea1ng LAN ph\u1ed5 bi\u1ebfn qua c\u00e1p.<\/li>\n\n\n\n<li><strong>Wi-Fi<\/strong>: K\u1ebft n\u1ed1i kh\u00f4ng d\u00e2y cho c\u00e1c thi\u1ebft b\u1ecb di \u0111\u1ed9ng v\u00e0 m\u00e1y t\u00ednh.<\/li>\n\n\n\n<li><strong>ARP (Address Resolution Protocol)<\/strong>: X\u00e1c \u0111\u1ecbnh \u0111\u1ecba ch\u1ec9 MAC c\u1ee7a thi\u1ebft b\u1ecb t\u1eeb \u0111\u1ecba ch\u1ec9 IP.<\/li>\n<\/ul>\n\n\n\n<p>D\u1eef li\u1ec7u t\u1ea1i l\u1edbp n\u00e0y \u0111\u01b0\u1ee3c \u0111\u00f3ng g\u00f3i th\u00e0nh frame, k\u00e8m th\u00f4ng tin \u0111\u1ecba ch\u1ec9 MAC \u0111\u1ec3 nh\u1eadn di\u1ec7n thi\u1ebft b\u1ecb tr\u00ean m\u1ea1ng LAN. V\u00ed d\u1ee5, khi m\u1ed9t PC g\u1eedi d\u1eef li\u1ec7u \u0111\u1ebfn router, l\u1edbp Network Access \u0111\u1ea3m b\u1ea3o frame \u0111\u01b0\u1ee3c truy\u1ec1n qua c\u00e1p ho\u1eb7c s\u00f3ng Wi-Fi, \u0111\u1ebfn \u0111\u00fang thi\u1ebft b\u1ecb \u0111\u00edch, \u0111\u1ed3ng th\u1eddi ki\u1ec3m so\u00e1t l\u1ed7i truy\u1ec1n t\u1ea3i c\u01a1 b\u1ea3n \u0111\u1ec3 duy tr\u00ec s\u1ef1 \u1ed5n \u0111\u1ecbnh c\u1ee7a m\u1ea1ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">3. Qu\u00e1 tr\u00ecnh truy\u1ec1n d\u1eef li\u1ec7u trong TCP\/IP<\/h2>\n\n\n\n<p>D\u1eef li\u1ec7u trong m\u00f4 h\u00ecnh TCP\/IP tr\u1ea3i qua m\u1ed9t chu\u1ed7i c\u00e1c b\u01b0\u1edbc tu\u1ea7n t\u1ef1, t\u1eeb khi \u0111\u01b0\u1ee3c t\u1ea1o b\u1edfi \u1ee9ng d\u1ee5ng \u0111\u1ebfn khi \u0111\u1ebfn tay thi\u1ebft b\u1ecb \u0111\u00edch, \u0111\u1ea3m b\u1ea3o t\u00ednh tin c\u1eady v\u00e0 ch\u00ednh x\u00e1c.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"982\" height=\"1024\" src=\"https:\/\/kienthucmo.com\/wp-content\/uploads\/tcp-ip-982x1024.avif\" alt=\" Qu\u00e1 tr\u00ecnh truy\u1ec1n d\u1eef li\u1ec7u trong TCP\/IP\" class=\"wp-image-2057\" style=\"width:609px;height:auto\" srcset=\"https:\/\/kienthucmo.com\/wp-content\/uploads\/tcp-ip-982x1024.avif 982w, https:\/\/kienthucmo.com\/wp-content\/uploads\/tcp-ip-288x300.avif 288w, https:\/\/kienthucmo.com\/wp-content\/uploads\/tcp-ip-768x801.avif 768w, https:\/\/kienthucmo.com\/wp-content\/uploads\/tcp-ip-1473x1536.avif 1473w, https:\/\/kienthucmo.com\/wp-content\/uploads\/tcp-ip-1300x1355.avif 1300w, https:\/\/kienthucmo.com\/wp-content\/uploads\/tcp-ip.avif 1600w\" sizes=\"(max-width: 982px) 100vw, 982px\" \/><\/figure>\n<\/div>\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Application Layer<\/strong>: D\u1eef li\u1ec7u \u0111\u01b0\u1ee3c t\u1ea1o b\u1edfi \u1ee9ng d\u1ee5ng, v\u00ed d\u1ee5 nh\u01b0 m\u1ed9t HTTP request khi duy\u1ec7t web, hay n\u1ed9i dung email khi g\u1eedi th\u01b0.<\/li>\n\n\n\n<li><strong>Transport Layer<\/strong>: D\u1eef li\u1ec7u \u0111\u01b0\u1ee3c chia nh\u1ecf th\u00e0nh segments (TCP) ho\u1eb7c datagrams (UDP), \u0111\u1ed3ng th\u1eddi g\u1eafn th\u00f4ng tin port \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u1ee9ng d\u1ee5ng nh\u1eadn.<\/li>\n\n\n\n<li><strong>Internet Layer<\/strong>: C\u00e1c segments\/datagrams \u0111\u01b0\u1ee3c \u0111\u00f3ng g\u00f3i th\u00e0nh packets, k\u00e8m \u0111\u1ecba ch\u1ec9 IP ngu\u1ed3n v\u00e0 \u0111\u00edch, x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1eddng \u0111i c\u1ee7a d\u1eef li\u1ec7u qua m\u1ea1ng.<\/li>\n\n\n\n<li><strong>Network Access Layer<\/strong>: Packets \u0111\u01b0\u1ee3c \u0111\u00f3ng g\u00f3i th\u00e0nh frames, k\u00e8m \u0111\u1ecba ch\u1ec9 MAC, v\u00e0 truy\u1ec1n qua m\u1ea1ng v\u1eadt l\u00fd nh\u01b0 c\u00e1p Ethernet ho\u1eb7c s\u00f3ng Wi-Fi \u0111\u1ebfn thi\u1ebft b\u1ecb \u0111\u00edch.<\/li>\n<\/ol>\n\n\n\n<p>Qu\u00e1 tr\u00ecnh n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 encapsulation, ngh\u0129a l\u00e0 d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c \u201cbao b\u1ecdc\u201d t\u1eebng l\u1edbp tr\u01b0\u1edbc khi truy\u1ec1n \u0111i. Khi d\u1eef li\u1ec7u \u0111\u1ebfn \u0111\u00edch, qu\u00e1 tr\u00ecnh decapsulation di\u1ec5n ra: t\u1eebng l\u1edbp gi\u1ea3i n\u00e9n d\u1eef li\u1ec7u \u0111\u1ec3 \u1ee9ng d\u1ee5ng cu\u1ed1i c\u00f9ng c\u00f3 th\u1ec3 \u0111\u1ecdc v\u00e0 x\u1eed l\u00fd ch\u00ednh x\u00e1c th\u00f4ng tin.<\/p>\n\n\n\n<p>V\u00ed d\u1ee5 minh h\u1ecda: Khi b\u1ea1n g\u1eedi m\u1ed9t email t\u1eeb Gmail, n\u1ed9i dung th\u01b0 tr\u1ea3i qua to\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh n\u00e0y, t\u1eeb vi\u1ec7c chia nh\u1ecf d\u1eef li\u1ec7u, g\u1eafn \u0111\u1ecba ch\u1ec9 IP, \u0111\u00f3ng g\u00f3i frame, \u0111\u1ebfn khi \u0111\u1ebfn server Google v\u00e0 ti\u1ebfp t\u1ee5c chuy\u1ec3n t\u1edbi ng\u01b0\u1eddi nh\u1eadn, \u0111\u1ea3m b\u1ea3o email \u0111\u01b0\u1ee3c truy\u1ec1n nhanh ch\u00f3ng v\u00e0 ch\u00ednh x\u00e1c.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">4. \u01afu \u0111i\u1ec3m v\u00e0 h\u1ea1n ch\u1ebf c\u1ee7a TCP\/IP<\/h2>\n\n\n\n<p><strong>\u01afu \u0111i\u1ec3m c\u1ee7a TCP\/IP<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>L\u00e0 chu\u1ea9n m\u1edf v\u00e0 ph\u1ed5 bi\u1ebfn, d\u1ec5 tri\u1ec3n khai tr\u00ean nhi\u1ec1u n\u1ec1n t\u1ea3ng kh\u00e1c nhau, t\u1eeb m\u00e1y t\u00ednh c\u00e1 nh\u00e2n, \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh \u0111\u1ebfn c\u00e1c server l\u1edbn, gi\u00fap c\u00e1c h\u1ec7 th\u1ed1ng kh\u00e1c nhau c\u00f3 th\u1ec3 giao ti\u1ebfp v\u1edbi nhau m\u00e0 kh\u00f4ng g\u1eb7p r\u00e0o c\u1ea3n v\u1ec1 ph\u1ea7n m\u1ec1m hay ph\u1ea7n c\u1ee9ng.<\/li>\n\n\n\n<li><strong>H\u1ed7 tr\u1ee3 \u0111a m\u1ea1ng<\/strong>, cho ph\u00e9p k\u1ebft n\u1ed1i nhi\u1ec1u lo\u1ea1i m\u1ea1ng kh\u00e1c nhau, t\u1eeb LAN, WAN \u0111\u1ebfn Internet to\u00e0n c\u1ea7u, \u0111\u1ea3m b\u1ea3o d\u1eef li\u1ec7u c\u00f3 th\u1ec3 \u0111i qua c\u00e1c m\u00f4i tr\u01b0\u1eddng m\u1ea1ng ph\u1ee9c t\u1ea1p.<\/li>\n\n\n\n<li><strong>TCP \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady<\/strong>, d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c ph\u00e2n m\u1ea3nh, ki\u1ec3m tra l\u1ed7i v\u00e0 s\u1eafp x\u1ebfp \u0111\u00fang th\u1ee9 t\u1ef1, gi\u00fap \u1ee9ng d\u1ee5ng nh\u1eadn d\u1eef li\u1ec7u m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c v\u00e0 \u0111\u1ea7y \u0111\u1ee7.<\/li>\n<\/ul>\n\n\n\n<p><strong>H\u1ea1n ch\u1ebf c\u1ee7a TCP\/IP<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Thi\u1ebfu t\u00ednh b\u1ea3o m\u1eadt t\u00edch h\u1ee3p<\/strong>: TCP\/IP kh\u00f4ng t\u1ef1 m\u00e3 h\u00f3a d\u1eef li\u1ec7u, v\u00ec v\u1eady c\u1ea7n b\u1ed5 sung c\u00e1c giao th\u1ee9c nh\u01b0 <strong>SSL\/TLS<\/strong> \u0111\u1ec3 b\u1ea3o v\u1ec7 th\u00f4ng tin nh\u1ea1y c\u1ea3m trong qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i.<\/li>\n\n\n\n<li><strong>Qu\u1ea3n l\u00fd ph\u1ee9c t\u1ea1p tr\u00ean m\u1ea1ng l\u1edbn<\/strong>: Khi tri\u1ec3n khai TCP\/IP tr\u00ean c\u00e1c m\u1ea1ng l\u1edbn, vi\u1ec7c thi\u1ebft l\u1eadp <strong>routing<\/strong>, <strong>subnetting<\/strong> v\u00e0 qu\u1ea3n l\u00fd l\u01b0u l\u01b0\u1ee3ng \u0111\u00f2i h\u1ecfi ki\u1ebfn th\u1ee9c chuy\u00ean s\u00e2u v\u00e0 c\u00f4ng c\u1ee5 h\u1ed7 tr\u1ee3.<\/li>\n\n\n\n<li><strong>T\u1ed1n b\u0103ng th\u00f4ng trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p<\/strong>: Do TCP \u0111\u1ea3m b\u1ea3o tin c\u1eady, n\u00ean c\u00f3 th\u00eam overhead t\u1eeb vi\u1ec7c x\u00e1c nh\u1eadn g\u00f3i tin, c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m hi\u1ec7u su\u1ea5t trong c\u00e1c \u1ee9ng d\u1ee5ng c\u1ea7n t\u1ed1c \u0111\u1ed9 cao nh\u01b0ng kh\u00f4ng qu\u00e1 quan t\u00e2m \u0111\u1ebfn l\u1ed7i m\u1ea5t g\u00f3i.<\/li>\n<\/ul>\n\n\n\n<p>M\u1eb7c d\u00f9 c\u00f3 m\u1ed9t s\u1ed1 h\u1ea1n ch\u1ebf, TCP\/IP v\u1eabn l\u00e0 n\u1ec1n t\u1ea3ng v\u1eefng ch\u1eafc cho Internet hi\u1ec7n \u0111\u1ea1i. N\u00f3 \u0111\u1eb7t n\u1ec1n m\u00f3ng cho c\u00e1c gi\u1ea3i ph\u00e1p b\u1ea3o m\u1eadt v\u00e0 m\u1ea1ng doanh nghi\u1ec7p ti\u00ean ti\u1ebfn, nh\u01b0 HTTPS, VPN, v\u00e0 c\u00e1c h\u1ec7 th\u1ed1ng truy\u1ec1n d\u1eef li\u1ec7u an to\u00e0n, \u0111\u1ed3ng th\u1eddi gi\u00fap Internet tr\u1edf n\u00ean linh ho\u1ea1t, m\u1edf r\u1ed9ng v\u00e0 \u0111\u00e1ng tin c\u1eady. Nh\u1edd TCP\/IP, c\u00e1c thi\u1ebft b\u1ecb v\u00e0 \u1ee9ng d\u1ee5ng tr\u00ean to\u00e0n c\u1ea7u c\u00f3 th\u1ec3 giao ti\u1ebfp li\u1ec1n m\u1ea1ch, t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho s\u1ef1 ph\u00e1t tri\u1ec3n kh\u00f4ng ng\u1eebng c\u1ee7a c\u00e1c d\u1ecbch v\u1ee5 tr\u1ef1c tuy\u1ebfn, \u1ee9ng d\u1ee5ng cloud, v\u00e0 IoT ng\u00e0y nay.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"350\" src=\"https:\/\/kienthucmo.com\/wp-content\/uploads\/tcp-ip-la-gi-1.jpg\" alt=\"\u01afu \u0111i\u1ec3m v\u00e0 h\u1ea1n ch\u1ebf c\u1ee7a TCP\/IP\" class=\"wp-image-2061\" srcset=\"https:\/\/kienthucmo.com\/wp-content\/uploads\/tcp-ip-la-gi-1.jpg 600w, https:\/\/kienthucmo.com\/wp-content\/uploads\/tcp-ip-la-gi-1-300x175.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\">5. \u1ee8ng d\u1ee5ng th\u1ef1c t\u1ebf c\u1ee7a TCP\/IP<\/h2>\n\n\n\n<p>TCP\/IP l\u00e0 n\u1ec1n t\u1ea3ng c\u1ee7a Internet v\u00e0 c\u00e1c m\u1ea1ng hi\u1ec7n \u0111\u1ea1i, \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong h\u1ea7u h\u1ebft c\u00e1c d\u1ecbch v\u1ee5 tr\u1ef1c tuy\u1ebfn m\u00e0 ch\u00fang ta s\u1eed d\u1ee5ng h\u00e0ng ng\u00e0y. Nh\u1edd ki\u1ebfn tr\u00fac ph\u00e2n l\u1edbp v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng, TCP\/IP h\u1ed7 tr\u1ee3 nhi\u1ec1u lo\u1ea1i \u1ee9ng d\u1ee5ng kh\u00e1c nhau, t\u1eeb giao ti\u1ebfp c\u01a1 b\u1ea3n \u0111\u1ebfn c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p.<\/p>\n\n\n\n<p>M\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng ti\u00eau bi\u1ec3u bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Web, email, streaming video\/audio<\/strong>: Truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u qua Internet m\u1ed9t c\u00e1ch tin c\u1eady, \u0111\u1ea3m b\u1ea3o ng\u01b0\u1eddi d\u00f9ng nh\u1eadn th\u00f4ng tin \u0111\u1ea7y \u0111\u1ee7 v\u00e0 \u0111\u00fang th\u1ee9 t\u1ef1.<\/li>\n\n\n\n<li><strong>VoIP, chat tr\u1ef1c tuy\u1ebfn<\/strong>: Truy\u1ec1n gi\u1ecdng n\u00f3i v\u00e0 tin nh\u1eafn th\u1eddi gian th\u1ef1c, k\u1ebft h\u1ee3p TCP\/UDP t\u00f9y nhu c\u1ea7u t\u1ed1c \u0111\u1ed9 v\u00e0 \u0111\u1ed9 tin c\u1eady.<\/li>\n\n\n\n<li><strong>Cloud computing v\u00e0 IoT<\/strong>: K\u1ebft n\u1ed1i c\u00e1c thi\u1ebft b\u1ecb, server v\u00e0 d\u1ecbch v\u1ee5 \u0111\u00e1m m\u00e2y, cho ph\u00e9p trao \u0111\u1ed5i d\u1eef li\u1ec7u li\u00ean t\u1ee5c v\u00e0 \u0111\u1ed3ng b\u1ed9 tr\u00ean nhi\u1ec1u n\u1ec1n t\u1ea3ng.<\/li>\n<\/ul>\n\n\n\n<p>V\u00ed d\u1ee5, m\u1ed9t TCP client-server \u0111\u01a1n gi\u1ea3n (nh\u01b0 \u0111\u00e3 tr\u00ecnh b\u00e0y \u1edf ph\u1ea7n Transport) minh h\u1ecda c\u00e1ch d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n tin c\u1eady gi\u1eefa hai thi\u1ebft b\u1ecb. Tr\u00ean th\u1ef1c t\u1ebf, m\u1ecdi d\u1ecbch v\u1ee5 Internet \u0111\u1ec1u d\u1ef1a tr\u00ean c\u01a1 ch\u1ebf t\u01b0\u01a1ng t\u1ef1, ch\u1ec9 kh\u00e1c v\u1ec1 quy m\u00f4, lo\u1ea1i giao th\u1ee9c b\u1ed5 sung v\u00e0 c\u00e1c t\u00ednh n\u0103ng b\u1ea3o m\u1eadt \u0111i k\u00e8m. Nh\u1edd TCP\/IP, c\u00e1c \u1ee9ng d\u1ee5ng v\u00e0 d\u1ecbch v\u1ee5 c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng li\u1ec1n m\u1ea1ch, \u1ed5n \u0111\u1ecbnh v\u00e0 m\u1edf r\u1ed9ng, t\u1eeb c\u00e1c k\u1ebft n\u1ed1i c\u00e1 nh\u00e2n \u0111\u1ebfn m\u1ea1ng doanh nghi\u1ec7p v\u00e0 Internet to\u00e0n c\u1ea7u.<br><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">6. So s\u00e1nh TCP\/IP v\u00e0 m\u00f4 h\u00ecnh OSI<\/h2>\n\n\n\n<p>M\u00f4 h\u00ecnh <strong>TCP\/IP<\/strong> v\u00e0 <strong>OSI<\/strong> \u0111\u1ec1u ph\u00e2n l\u1edbp \u0111\u1ec3 t\u1ed5 ch\u1ee9c c\u00e1ch d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n qua m\u1ea1ng, nh\u01b0ng c\u00f3 nhi\u1ec1u kh\u00e1c bi\u1ec7t v\u1ec1 s\u1ed1 l\u1edbp, m\u1ee5c ti\u00eau, t\u00ednh th\u1ef1c ti\u1ec5n v\u00e0 \u1ee9ng d\u1ee5ng:<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"467\" src=\"https:\/\/kienthucmo.com\/wp-content\/uploads\/osi-tcpip-diagram-1-1024x467.jpg\" alt=\"So s\u00e1nh TCP\/IP v\u00e0 m\u00f4 h\u00ecnh OSI\" class=\"wp-image-2059\" srcset=\"https:\/\/kienthucmo.com\/wp-content\/uploads\/osi-tcpip-diagram-1-1024x467.jpg 1024w, https:\/\/kienthucmo.com\/wp-content\/uploads\/osi-tcpip-diagram-1-300x137.jpg 300w, https:\/\/kienthucmo.com\/wp-content\/uploads\/osi-tcpip-diagram-1-768x350.jpg 768w, https:\/\/kienthucmo.com\/wp-content\/uploads\/osi-tcpip-diagram-1-1536x700.jpg 1536w, https:\/\/kienthucmo.com\/wp-content\/uploads\/osi-tcpip-diagram-1-1300x593.jpg 1300w, https:\/\/kienthucmo.com\/wp-content\/uploads\/osi-tcpip-diagram-1.jpg 2003w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>S\u1ed1 l\u1edbp v\u00e0 c\u00e1ch ph\u00e2n chia<\/strong>\n<ul class=\"wp-block-list\">\n<li><strong>OSI<\/strong>: C\u00f3 7 l\u1edbp r\u00f5 r\u00e0ng \u2013 Physical, Data Link, Network, Transport, Session, Presentation, Application. M\u1ed7i l\u1edbp c\u00f3 ch\u1ee9c n\u0103ng ri\u00eang bi\u1ec7t, gi\u00fap ph\u00e2n t\u00e1ch nhi\u1ec7m v\u1ee5 v\u00e0 d\u1ec5 d\u00e0ng nghi\u00ean c\u1ee9u l\u00fd thuy\u1ebft.<\/li>\n\n\n\n<li><strong>TCP\/IP<\/strong>: Ch\u1ec9 c\u00f3 4 l\u1edbp \u2013 Network Access, Internet, Transport, Application. TCP\/IP g\u1ed9p m\u1ed9t s\u1ed1 l\u1edbp OSI (v\u00ed d\u1ee5, Session v\u00e0 Presentation) v\u00e0o l\u1edbp Application, \u0111\u01a1n gi\u1ea3n h\u00f3a ki\u1ebfn tr\u00fac v\u00e0 d\u1ec5 tri\u1ec3n khai th\u1ef1c t\u1ebf.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>M\u1ee5c ti\u00eau thi\u1ebft k\u1ebf<\/strong>\n<ul class=\"wp-block-list\">\n<li><strong>OSI<\/strong>: T\u1eadp trung v\u00e0o m\u00f4 t\u1ea3 l\u00fd thuy\u1ebft v\u1ec1 c\u00e1ch c\u00e1c thi\u1ebft b\u1ecb giao ti\u1ebfp, l\u00e0m chu\u1ea9n tham chi\u1ebfu cho vi\u1ec7c ph\u00e1t tri\u1ec3n v\u00e0 so s\u00e1nh c\u00e1c giao th\u1ee9c m\u1ea1ng.<\/li>\n\n\n\n<li><strong>TCP\/IP<\/strong>: H\u01b0\u1edbng \u0111\u1ebfn tri\u1ec3n khai th\u1ef1c t\u1ebf, \u0111\u1ea3m b\u1ea3o d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n ch\u00ednh x\u00e1c, tin c\u1eady, v\u00e0 t\u01b0\u01a1ng th\u00edch gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb tr\u00ean Internet.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>T\u00ednh th\u1ef1c ti\u1ec5n v\u00e0 ph\u1ed5 bi\u1ebfn<\/strong>\n<ul class=\"wp-block-list\">\n<li><strong>OSI<\/strong>: Mang t\u00ednh h\u1ecdc thu\u1eadt, \u00edt \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng tr\u1ef1c ti\u1ebfp trong tri\u1ec3n khai m\u1ea1ng, ch\u1ee7 y\u1ebfu l\u00e0m c\u01a1 s\u1edf tham kh\u1ea3o.<\/li>\n\n\n\n<li><strong>TCP\/IP<\/strong>: L\u00e0 ti\u00eau chu\u1ea9n th\u1ef1c t\u1ebf c\u1ee7a Internet hi\u1ec7n nay, \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong m\u1ea1ng LAN, WAN, m\u1ea1ng doanh nghi\u1ec7p v\u00e0 d\u1ecbch v\u1ee5 tr\u1ef1c tuy\u1ebfn.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>C\u00e1ch x\u1eed l\u00fd d\u1eef li\u1ec7u<\/strong>\n<ul class=\"wp-block-list\">\n<li><strong>OSI<\/strong>: M\u1ed7i l\u1edbp c\u00f3 quy \u0111\u1ecbnh c\u1ee5 th\u1ec3 v\u1ec1 ch\u1ee9c n\u0103ng v\u00e0 c\u00e1ch d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c \u0111\u00f3ng g\u00f3i, gi\u1ea3i n\u00e9n, ki\u1ec3m tra l\u1ed7i.<\/li>\n\n\n\n<li><strong>TCP\/IP<\/strong>: T\u1eadp trung v\u00e0o hi\u1ec7u qu\u1ea3 truy\u1ec1n d\u1eef li\u1ec7u, d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c \u0111\u00f3ng g\u00f3i, \u0111\u1ecbnh tuy\u1ebfn v\u00e0 ki\u1ec3m so\u00e1t l\u1ed7i nh\u01b0ng g\u1ed9p m\u1ed9t s\u1ed1 ch\u1ee9c n\u0103ng \u0111\u1ec3 \u0111\u01a1n gi\u1ea3n h\u00f3a v\u00e0 t\u0103ng t\u1ed1c \u0111\u1ed9 tri\u1ec3n khai.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng v\u00e0 t\u01b0\u01a1ng th\u00edch<\/strong>\n<ul class=\"wp-block-list\">\n<li><strong>OSI<\/strong>: L\u00fd thuy\u1ebft t\u1ed1t nh\u01b0ng vi\u1ec7c tri\u1ec3n khai to\u00e0n b\u1ed9 m\u00f4 h\u00ecnh 7 l\u1edbp ph\u1ee9c t\u1ea1p, \u00edt linh ho\u1ea1t.<\/li>\n\n\n\n<li><strong>TCP\/IP<\/strong>: Linh ho\u1ea1t, d\u1ec5 m\u1edf r\u1ed9ng, t\u01b0\u01a1ng th\u00edch v\u1edbi nhi\u1ec1u lo\u1ea1i m\u1ea1ng v\u00e0 thi\u1ebft b\u1ecb, cho ph\u00e9p Internet ph\u00e1t tri\u1ec3n nhanh ch\u00f3ng v\u00e0 \u0111\u1ed3ng b\u1ed9 tr\u00ean to\u00e0n c\u1ea7u.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p><strong>T\u00f3m l\u1ea1i<\/strong>, TCP\/IP l\u00e0 phi\u00ean b\u1ea3n th\u1ef1c ti\u1ec5n, g\u1ecdn nh\u1eb9 v\u00e0 ph\u1ed5 bi\u1ebfn h\u01a1n c\u1ee7a OSI, v\u1eabn d\u1ef1a tr\u00ean c\u00e1c nguy\u00ean t\u1eafc ph\u00e2n l\u1edbp nh\u01b0ng t\u1ed1i \u01b0u h\u00f3a cho vi\u1ec7c tri\u1ec3n khai m\u1ea1ng th\u1ef1c t\u1ebf, gi\u00fap d\u1eef li\u1ec7u truy\u1ec1n tin c\u1eady v\u00e0 c\u00e1c d\u1ecbch v\u1ee5 Internet ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">7. K\u1ebft lu\u1eadn<\/h2>\n\n\n\n<p>M\u00f4 h\u00ecnh <strong>TCP\/IP<\/strong> l\u00e0 n\u1ec1n t\u1ea3ng quan tr\u1ecdng c\u1ee7a m\u1ea1ng m\u00e1y t\u00ednh v\u00e0 Internet hi\u1ec7n \u0111\u1ea1i, cho ph\u00e9p d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n \u0111i m\u1ed9t c\u00e1ch tin c\u1eady, ch\u00ednh x\u00e1c v\u00e0 linh ho\u1ea1t. B\u1ed1n l\u1edbp ch\u00ednh \u2013 Application, Transport, Internet, Network Access \u2013 ph\u1ed1i h\u1ee3p ch\u1eb7t ch\u1ebd, \u0111\u1ea3m b\u1ea3o d\u1eef li\u1ec7u t\u1eeb \u1ee9ng d\u1ee5ng \u0111\u1ebfn \u0111\u00edch cu\u1ed1i c\u00f9ng m\u00e0 v\u1eabn duy tr\u00ec ki\u1ec3m so\u00e1t l\u1ed7i v\u00e0 \u0111\u1ecbnh tuy\u1ebfn hi\u1ec7u qu\u1ea3. Giao th\u1ee9c <strong>TCP<\/strong> \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady, trong khi <strong>UDP<\/strong> t\u1ed1i \u01b0u t\u1ed1c \u0111\u1ed9 cho c\u00e1c \u1ee9ng d\u1ee5ng th\u1eddi gian th\u1ef1c. L\u1edbp Internet ch\u1ecbu tr\u00e1ch nhi\u1ec7m \u0111\u1ecbnh tuy\u1ebfn d\u1eef li\u1ec7u gi\u1eefa c\u00e1c m\u1ea1ng kh\u00e1c nhau, c\u00f2n l\u1edbp Network Access \u0111\u1ea3m b\u1ea3o truy\u1ec1n d\u1eef li\u1ec7u qua m\u00f4i tr\u01b0\u1eddng v\u1eadt l\u00fd. TCP\/IP c\u0169ng cung c\u1ea5p n\u1ec1n t\u1ea3ng m\u1edf, d\u1ec5 tri\u1ec3n khai v\u00e0 t\u01b0\u01a1ng th\u00edch v\u1edbi nhi\u1ec1u lo\u1ea1i m\u1ea1ng. So v\u1edbi m\u00f4 h\u00ecnh OSI, TCP\/IP g\u1ecdn nh\u1eb9, th\u1ef1c ti\u1ec5n h\u01a1n, t\u1eadp trung v\u00e0o tri\u1ec3n khai m\u1ea1ng th\u1ef1c t\u1ebf. Nh\u1edd v\u1eady, ki\u1ebfn th\u1ee9c v\u1ec1 TCP\/IP l\u00e0 c\u01a1 s\u1edf quan tr\u1ecdng \u0111\u1ec3 hi\u1ec3u c\u00e1ch c\u00e1c d\u1ecbch v\u1ee5 Internet, t\u1eeb web, email \u0111\u1ebfn IoT, ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3. Trong t\u01b0\u01a1ng lai, vi\u1ec7c n\u1eafm v\u1eefng TCP\/IP s\u1ebd l\u00e0 ti\u1ec1n \u0111\u1ec1 quan tr\u1ecdng \u0111\u1ec3 nghi\u00ean c\u1ee9u c\u00e1c giao th\u1ee9c m\u1edbi v\u00e0 c\u00e1c gi\u1ea3i ph\u00e1p m\u1ea1ng b\u1ea3o m\u1eadt hi\u1ec7n \u0111\u1ea1i.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">8. T\u00e0i li\u1ec7u tham kh\u1ea3o<\/h2>\n\n\n\n<p>[1] W. Richard Stevens, <em>TCP\/IP Illustrated, Volume 1: The Protocols<\/em>, 2nd ed. Boston: Addison-Wesley, 1994.<br>[2] Andrew S. Tanenbaum and David J. Wetherall, <em>Computer Networks<\/em>, 5th ed. Boston: Pearson, 2011.<br>[3] J. F. Kurose and K. W. Ross, <em>Computer Networking: A Top-Down Approach<\/em>, 8th ed. Boston: Pearson, 2021.<br>[4] Behrouz A. Forouzan, <em>TCP\/IP Protocol Suite<\/em>, 4th ed. New York: McGraw-Hill, 2013.<br>[5] D. E. Comer, <em>Internetworking with TCP\/IP Volume One<\/em>, 6th ed. Upper Saddle River, NJ: Prentice Hall, 2013.<br>[6] K. Fall and W. Stevens, <em>TCP\/IP Illustrated<\/em>, Boston: Addison-Wesley, 2012.<br>[7] Wikipedia contributors, \u201cTCP\/IP,\u201d <em>Wikipedia<\/em>, 2025. [Online]. Available: <a>https:\/\/en.wikipedia.org\/wiki\/TCP\/IP<\/a>. [Accessed: Oct. 7, 2025].<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hi\u1ec3u r\u00f5 TCP\/IP kh\u00f4ng ch\u1ec9 gi\u00fap ch\u00fang ta bi\u1ebft c\u00e1ch d\u1eef li\u1ec7u \u201c\u0111i\u201d t\u1eeb thi\u1ebft b\u1ecb n\u00e0y sang thi\u1ebft b\u1ecb kh\u00e1c, m\u00e0 c\u00f2n m\u1edf ra c\u01a1 h\u1ed9i kh\u00e1m ph\u00e1 nhi\u1ec1u kh\u00eda c\u1ea1nh kh\u00e1c c\u1ee7a m\u1ea1ng m\u00e1y t\u00ednh, t\u1eeb l\u1eadp tr\u00ecnh m\u1ea1ng, qu\u1ea3n tr\u1ecb m\u1ea1ng, \u0111\u1ebfn b\u1ea3o m\u1eadt v\u00e0 t\u1ed1i \u01b0u hi\u1ec7u su\u1ea5t<\/p>\n","protected":false},"author":1,"featured_media":2049,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"googlesitekit_rrm_CAowieHDDA:productID":"","footnotes":""},"categories":[19],"tags":[],"class_list":["post-2048","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mang-may-tinh"],"_links":{"self":[{"href":"https:\/\/kienthucmo.com\/vi\/wp-json\/wp\/v2\/posts\/2048","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kienthucmo.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kienthucmo.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kienthucmo.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kienthucmo.com\/vi\/wp-json\/wp\/v2\/comments?post=2048"}],"version-history":[{"count":5,"href":"https:\/\/kienthucmo.com\/vi\/wp-json\/wp\/v2\/posts\/2048\/revisions"}],"predecessor-version":[{"id":3235,"href":"https:\/\/kienthucmo.com\/vi\/wp-json\/wp\/v2\/posts\/2048\/revisions\/3235"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/kienthucmo.com\/vi\/wp-json\/wp\/v2\/media\/2049"}],"wp:attachment":[{"href":"https:\/\/kienthucmo.com\/vi\/wp-json\/wp\/v2\/media?parent=2048"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kienthucmo.com\/vi\/wp-json\/wp\/v2\/categories?post=2048"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kienthucmo.com\/vi\/wp-json\/wp\/v2\/tags?post=2048"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}