{"id":394,"date":"2025-02-05T19:07:36","date_gmt":"2025-02-05T19:07:36","guid":{"rendered":"https:\/\/replicounts.org\/network\/protocol\/"},"modified":"2025-02-05T19:07:36","modified_gmt":"2025-02-05T19:07:36","slug":"protocol","status":"publish","type":"post","link":"https:\/\/replicounts.org\/vi\/network\/protocol\/","title":{"rendered":"Giao th\u1ee9c"},"content":{"rendered":"

Ph\u00e2n t\u00edch k\u1ef9 thu\u1eadt giao th\u1ee9c trong b\u1ed1i c\u1ea3nh m\u1ea1ng proxy<\/h3>\n

Giao th\u1ee9c \u1edf c\u1ea5p \u0111\u1ed9 k\u1ef9 thu\u1eadt l\u00e0 g\u00ec?<\/h4>\n

Trong l\u0129nh v\u1ef1c m\u1ea1ng m\u00e1y t\u00ednh, m\u1ed9t giao th\u1ee9c<\/strong> c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c hi\u1ec3u l\u00e0 m\u1ed9t t\u1eadp h\u1ee3p c\u00e1c quy t\u1eafc ho\u1eb7c quy \u01b0\u1edbc ch\u1ec9 \u0111\u1ecbnh c\u00e1ch d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n v\u00e0 nh\u1eadn qua m\u1ea1ng. N\u00f3 x\u00e1c \u0111\u1ecbnh \u0111\u1ecbnh d\u1ea1ng c\u1ee7a d\u1eef li\u1ec7u, c\u00e1c th\u1ee7 t\u1ee5c giao ti\u1ebfp v\u00e0 c\u00e1c c\u01a1 ch\u1ebf x\u1eed l\u00fd l\u1ed7i v\u00e0 ki\u1ec3m so\u00e1t lu\u1ed3ng. C\u00e1c giao th\u1ee9c \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c thi\u1ebft b\u1ecb, \u1ee9ng d\u1ee5ng v\u00e0 d\u1ecbch v\u1ee5 c\u00f3 th\u1ec3 giao ti\u1ebfp hi\u1ec7u qu\u1ea3 v\u1edbi nhau, b\u1ea5t k\u1ec3 c\u1ea5u h\u00ecnh ph\u1ea7n c\u1ee9ng ho\u1eb7c ph\u1ea7n m\u1ec1m c\u01a1 b\u1ea3n c\u1ee7a ch\u00fang.<\/p>\n

Trong b\u1ed1i c\u1ea3nh m\u1ea1ng proxy, giao th\u1ee9c \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c t\u1ea1o \u0111i\u1ec1u ki\u1ec7n thu\u1eadn l\u1ee3i cho giao ti\u1ebfp gi\u1eefa m\u00e1y kh\u00e1ch v\u00e0 m\u00e1y ch\u1ee7 trong khi th\u01b0\u1eddng \u0111\u1ecbnh tuy\u1ebfn l\u01b0u l\u01b0\u1ee3ng qua c\u00e1c thi\u1ebft b\u1ecb trung gian \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 proxy. Proxy ho\u1ea1t \u0111\u1ed9ng nh\u01b0 trung gian c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n nhi\u1ec1u ch\u1ee9c n\u0103ng kh\u00e1c nhau nh\u01b0 l\u01b0u tr\u1eef \u0111\u1ec7m, l\u1ecdc ho\u1eb7c s\u1eeda \u0111\u1ed5i y\u00eau c\u1ea7u v\u00e0 ph\u1ea3n h\u1ed3i gi\u1eefa m\u00e1y kh\u00e1ch v\u00e0 m\u00e1y ch\u1ee7.<\/p>\n

Giao th\u1ee9c t\u01b0\u01a1ng t\u00e1c v\u1edbi Proxy v\u00e0 M\u1ea1ng nh\u01b0 th\u1ebf n\u00e0o<\/h4>\n

Khi m\u00e1y kh\u00e1ch g\u1eedi y\u00eau c\u1ea7u \u0111\u1ebfn m\u00e1y ch\u1ee7 th\u00f4ng qua proxy, t\u01b0\u01a1ng t\u00e1c sau s\u1ebd x\u1ea3y ra:<\/p>\n

    \n
  1. \n

    Y\u00eau c\u1ea7u c\u1ee7a kh\u00e1ch h\u00e0ng<\/strong>: M\u00e1y kh\u00e1ch t\u1ea1o y\u00eau c\u1ea7u d\u1ef1a tr\u00ean giao th\u1ee9c c\u1ee5 th\u1ec3 (v\u00ed d\u1ee5: HTTP, HTTPS, SOCKS) v\u00e0 g\u1eedi \u0111\u1ebfn m\u00e1y ch\u1ee7 proxy. Y\u00eau c\u1ea7u n\u00e0y bao g\u1ed3m c\u00e1c ti\u00eau \u0111\u1ec1 cung c\u1ea5p th\u00f4ng tin v\u1ec1 y\u00eau c\u1ea7u, ch\u1eb3ng h\u1ea1n nh\u01b0 lo\u1ea1i n\u1ed9i dung \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u, kh\u1ea3 n\u0103ng c\u1ee7a m\u00e1y kh\u00e1ch v\u00e0 b\u1ea5t k\u1ef3 h\u00e0nh \u0111\u1ed9ng mong mu\u1ed1n n\u00e0o.<\/p>\n<\/li>\n

  2. \n

    X\u1eed l\u00fd Proxy<\/strong>: M\u00e1y ch\u1ee7 proxy nh\u1eadn y\u00eau c\u1ea7u v\u00e0 di\u1ec5n gi\u1ea3i theo c\u00e1c quy t\u1eafc giao th\u1ee9c. N\u00f3 c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n nhi\u1ec1u h\u00e0nh \u0111\u1ed9ng kh\u00e1c nhau d\u1ef1a tr\u00ean c\u1ea5u h\u00ecnh c\u1ee7a n\u00f3, ch\u1eb3ng h\u1ea1n nh\u01b0:<\/p>\n<\/li>\n

  3. Chuy\u1ec3n ti\u1ebfp y\u00eau c\u1ea7u \u0111\u1ebfn m\u00e1y ch\u1ee7 mong mu\u1ed1n.<\/li>\n
  4. L\u01b0u tr\u1eef ph\u1ea3n h\u1ed3i \u0111\u1ec3 s\u1eed d\u1ee5ng sau n\u00e0y.<\/li>\n
  5. \n

    S\u1eeda \u0111\u1ed5i y\u00eau c\u1ea7u ho\u1eb7c ph\u1ea3n h\u1ed3i (v\u00ed d\u1ee5: th\u00eam ti\u00eau \u0111\u1ec1, l\u1ecdc n\u1ed9i dung).<\/p>\n<\/li>\n

  6. \n

    Ph\u1ea3n h\u1ed3i c\u1ee7a m\u00e1y ch\u1ee7<\/strong>:M\u00e1y ch\u1ee7 x\u1eed l\u00fd y\u00eau c\u1ea7u v\u00e0 g\u1eedi ph\u1ea3n h\u1ed3i tr\u1edf l\u1ea1i proxy, v\u1eabn tu\u00e2n th\u1ee7 theo \u0111\u1ecbnh d\u1ea1ng v\u00e0 quy t\u1eafc c\u1ee7a giao th\u1ee9c.<\/p>\n<\/li>\n

  7. \n

    Chuy\u1ec3n ti\u1ebfp Proxy<\/strong>: M\u00e1y ch\u1ee7 proxy nh\u1eadn ph\u1ea3n h\u1ed3i t\u1eeb m\u00e1y ch\u1ee7 v\u00e0 chuy\u1ec3n ti\u1ebfp l\u1ea1i cho m\u00e1y kh\u00e1ch. N\u00f3 c\u0169ng c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng c\u00e1c s\u1eeda \u0111\u1ed5i ho\u1eb7c chi\u1ebfn l\u01b0\u1ee3c l\u01b0u tr\u1eef \u0111\u1ec7m ti\u1ebfp theo tr\u01b0\u1edbc khi g\u1eedi ph\u1ea3n h\u1ed3i.<\/p>\n<\/li>\n<\/ol>\n

    C\u00e1c tham s\u1ed1 ho\u1eb7c \u0111\u1ecbnh d\u1ea1ng ch\u00ednh<\/h4>\n

    C\u00e1c giao th\u1ee9c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u1ea1ng proxy c\u00f3 nhi\u1ec1u tham s\u1ed1 v\u00e0 \u0111\u1ecbnh d\u1ea1ng ch\u00ednh quy\u1ebft \u0111\u1ecbnh c\u00e1ch d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c c\u1ea5u tr\u00fac v\u00e0 truy\u1ec1n \u0111\u1ea1t. Sau \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 v\u00ed d\u1ee5:<\/p>\n

      \n
    • HTTP\/HTTPS<\/strong>:<\/li>\n
    • D\u00f2ng y\u00eau c\u1ea7u<\/strong>: Bao g\u1ed3m ph\u01b0\u01a1ng th\u1ee9c (GET, POST), URL t\u00e0i nguy\u00ean v\u00e0 phi\u00ean b\u1ea3n HTTP.<\/li>\n
    • Ti\u00eau \u0111\u1ec1<\/strong>: C\u00e1c c\u1eb7p kh\u00f3a-gi\u00e1 tr\u1ecb cung c\u1ea5p si\u00eau d\u1eef li\u1ec7u v\u1ec1 y\u00eau c\u1ea7u (v\u00ed d\u1ee5: User-Agent<\/code>, Accept<\/code>, Content-Type<\/code>).<\/li>\n
    • \n

      Th\u00e2n h\u00ecnh<\/strong>: D\u1eef li\u1ec7u t\u00f9y ch\u1ecdn \u0111\u01b0\u1ee3c g\u1eedi b\u1eb1ng c\u00e1c ph\u01b0\u01a1ng th\u1ee9c nh\u01b0 POST.<\/p>\n<\/li>\n

    • \n

      SOCKS<\/strong>:<\/p>\n<\/li>\n

    • Phi\u00ean b\u1ea3n<\/strong>: Ch\u1ec9 ra phi\u00ean b\u1ea3n SOCKS (SOCKS4, SOCKS5).<\/li>\n
    • Y\u00eau c\u1ea7u<\/strong>: Ch\u1ec9 ra h\u00e0nh \u0111\u1ed9ng (K\u1ebeT N\u1ed0I, LI\u00caN K\u1ebeT, UDP ASSOCIATE).<\/li>\n
    • Lo\u1ea1i \u0111\u1ecba ch\u1ec9<\/strong>: Ch\u1ec9 \u0111\u1ecbnh lo\u1ea1i \u0111\u1ecba ch\u1ec9 (IPV4, DOMAIN, IPV6).<\/li>\n
    • \n

      \u0110\u1ecba ch\u1ec9 \u0111\u00edch v\u00e0 c\u1ed5ng<\/strong>: \u0110\u1ecba ch\u1ec9 v\u00e0 c\u1ed5ng c\u1ee7a m\u00e1y ch\u1ee7 m\u1ee5c ti\u00eau.<\/p>\n<\/li>\n

    • \n

      FTP<\/strong>:<\/p>\n<\/li>\n

    • Y\u00eau c\u1ea7u<\/strong>: Ch\u1ec9 ra lo\u1ea1i l\u1ec7nh FTP (USER, PASS, RETR, STOR).<\/li>\n
    • M\u00e3 ph\u1ea3n h\u1ed3i<\/strong>: M\u00e3 s\u1ed1 bi\u1ec3u th\u1ecb k\u1ebft qu\u1ea3 c\u1ee7a l\u1ec7nh (v\u00ed d\u1ee5: 200 l\u00e0 th\u00e0nh c\u00f4ng, 550 l\u00e0 kh\u00f4ng t\u00ecm th\u1ea5y t\u1ec7p).<\/li>\n<\/ul>\n

      V\u00ed d\u1ee5 c\u01a1 b\u1ea3n v\u1edbi gi\u1ea3i th\u00edch k\u1ef9 thu\u1eadt<\/h4>\n

      H\u00e3y c\u00f9ng xem x\u00e9t m\u1ed9t v\u00ed d\u1ee5 s\u1eed d\u1ee5ng giao th\u1ee9c HTTP, giao th\u1ee9c th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp web.<\/p>\n

      K\u1ecbch b\u1ea3n<\/strong>: M\u1ed9t m\u00e1y kh\u00e1ch mu\u1ed1n truy c\u1eadp v\u00e0o m\u1ed9t trang web th\u00f4ng qua proxy HTTP.<\/p>\n

      B\u01b0\u1edbc 1: Y\u00eau c\u1ea7u c\u1ee7a kh\u00e1ch h\u00e0ng<\/strong><\/p>\n

      GET \/index.html HTTP\/1.1\nHost: www.example.com\nUser-Agent: Mozilla\/5.0\nAccept: text\/html\n<\/code><\/pre>\n
      Trong y\u00eau c\u1ea7u n\u00e0y:
      \n\u2013 GET<\/code> l\u00e0 ph\u01b0\u01a1ng ph\u00e1p cho bi\u1ebft m\u00e1y kh\u00e1ch mu\u1ed1n l\u1ea5y m\u1ed9t t\u00e0i nguy\u00ean.
      \n\u2013 \/index.html<\/code> l\u00e0 \u0111\u01b0\u1eddng d\u1eabn \u0111\u1ebfn t\u00e0i nguy\u00ean tr\u00ean m\u00e1y ch\u1ee7.
      \n\u2013 HTTP\/1.1<\/code> ch\u1ec9 r\u00f5 phi\u00ean b\u1ea3n HTTP \u0111ang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng.
      \n\u2013 Host<\/code>, User-Agent<\/code>, V\u00e0 Accept<\/code> l\u00e0 c\u00e1c ti\u00eau \u0111\u1ec1 cung c\u1ea5p th\u00eam ng\u1eef c\u1ea3nh v\u1ec1 y\u00eau c\u1ea7u.<\/p>\n
      B\u01b0\u1edbc 2: X\u1eed l\u00fd Proxy<\/strong>
      \nProxy nh\u1eadn \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u n\u00e0y. D\u1ef1a tr\u00ean c\u1ea5u h\u00ecnh c\u1ee7a n\u00f3, n\u00f3 c\u00f3 th\u1ec3 l\u01b0u tr\u1eef y\u00eau c\u1ea7u, ki\u1ec3m tra quy\u1ec1n ho\u1eb7c ghi l\u1ea1i ho\u1ea1t \u0111\u1ed9ng. N\u1ebfu y\u00eau c\u1ea7u h\u1ee3p l\u1ec7, n\u00f3 s\u1ebd chuy\u1ec3n ti\u1ebfp y\u00eau c\u1ea7u \u0111\u1ebfn m\u00e1y ch\u1ee7 m\u1ee5c ti\u00eau.<\/p>\n
      B\u01b0\u1edbc 3: Ph\u1ea3n h\u1ed3i c\u1ee7a m\u00e1y ch\u1ee7<\/strong>
      \nM\u00e1y ch\u1ee7 x\u1eed l\u00fd y\u00eau c\u1ea7u v\u00e0 ph\u1ea3n h\u1ed3i:<\/p>\n
      HTTP\/1.1 200 OK\nContent-Type: text\/html\nContent-Length: 1234\n\n<html>\n<body>\n<h1>Welcome to Example.com<\/h1>\n<\/body>\n<\/html>\n<\/code><\/pre>\n
      Ph\u1ea3n h\u1ed3i n\u00e0y bao g\u1ed3m:
      \n\u2013 M\u00e3 tr\u1ea1ng th\u00e1i 200 OK<\/code>, bi\u1ec3u th\u1ecb s\u1ef1 th\u00e0nh c\u00f4ng.
      \n\u2013 Content-Type<\/code> ch\u1ec9 r\u00f5 lo\u1ea1i n\u1ed9i dung \u0111\u01b0\u1ee3c tr\u1ea3 v\u1ec1.
      \n\u2013 Content-Length<\/code> bi\u1ec3u th\u1ecb k\u00edch th\u01b0\u1edbc c\u1ee7a n\u1ed9i dung c\u01a1 th\u1ec3.<\/p>\n
      B\u01b0\u1edbc 4: Chuy\u1ec3n ti\u1ebfp Proxy<\/strong>
      \nProxy nh\u1eadn ph\u1ea3n h\u1ed3i t\u1eeb m\u00e1y ch\u1ee7 v\u00e0 g\u1eedi l\u1ea1i cho m\u00e1y kh\u00e1ch, c\u00f3 kh\u1ea3 n\u0103ng s\u1eeda \u0111\u1ed5i ti\u00eau \u0111\u1ec1 ho\u1eb7c l\u01b0u tr\u1eef n\u1ed9i dung cho c\u00e1c y\u00eau c\u1ea7u trong t\u01b0\u01a1ng lai.<\/p>\n
      Ph\u1ea7n k\u1ebft lu\u1eadn<\/h3>\n
      T\u00f3m l\u1ea1i, c\u00e1c giao th\u1ee9c \u0111\u00f3ng vai tr\u00f2 l\u00e0 khu\u00f4n kh\u1ed5 n\u1ec1n t\u1ea3ng cho giao ti\u1ebfp trong m\u1ea1ng proxy, \u0111\u1ea3m b\u1ea3o d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c c\u1ea5u tr\u00fac v\u00e0 trao \u0111\u1ed5i ch\u00ednh x\u00e1c gi\u1eefa m\u00e1y kh\u00e1ch, proxy v\u00e0 m\u00e1y ch\u1ee7. Vi\u1ec7c hi\u1ec3u c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt, tham s\u1ed1 v\u00e0 \u0111\u1ecbnh d\u1ea1ng c\u1ee7a c\u00e1c giao th\u1ee9c n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 thi\u1ebft k\u1ebf v\u00e0 tri\u1ec3n khai c\u00e1c d\u1ecbch v\u1ee5 proxy m\u1ea1nh m\u1ebd v\u00e0 \u0111\u1ea3m b\u1ea3o k\u1ebft n\u1ed1i li\u1ec1n m\u1ea1ch tr\u00ean nhi\u1ec1u ki\u1ebfn tr\u00fac m\u1ea1ng kh\u00e1c nhau.<\/p>","protected":false},"excerpt":{"rendered":"
      Technical Breakdown of Protocol in the Context of Proxy Networks What is Protocol at a Technical Level? In the realm of computer networking, a protocol can be understood as a set of rules or conventions that dictate how data is transmitted and received across a network. It defines the format of the data, the procedures […]<\/p>\n","protected":false},"author":1,"featured_media":395,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[17],"tags":[45,47,49,19,44,48,51,46,52,50],"class_list":["post-394","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-network","tag-communication","tag-data-transfer","tag-interoperability","tag-networking","tag-protocol","tag-security","tag-software","tag-standards","tag-systems","tag-technology"],"acf":[],"_links":{"self":[{"href":"https:\/\/replicounts.org\/vi\/wp-json\/wp\/v2\/posts\/394","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/replicounts.org\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/replicounts.org\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/replicounts.org\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/replicounts.org\/vi\/wp-json\/wp\/v2\/comments?post=394"}],"version-history":[{"count":0,"href":"https:\/\/replicounts.org\/vi\/wp-json\/wp\/v2\/posts\/394\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/replicounts.org\/vi\/wp-json\/wp\/v2\/media\/395"}],"wp:attachment":[{"href":"https:\/\/replicounts.org\/vi\/wp-json\/wp\/v2\/media?parent=394"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/replicounts.org\/vi\/wp-json\/wp\/v2\/categories?post=394"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/replicounts.org\/vi\/wp-json\/wp\/v2\/tags?post=394"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}