{"id":18502,"date":"2021-12-23T20:19:00","date_gmt":"2021-12-23T13:19:00","guid":{"rendered":"https:\/\/speed.family\/?p=18502"},"modified":"2023-08-31T07:11:11","modified_gmt":"2023-08-31T00:11:11","slug":"proxy-nguoc-la-gi","status":"publish","type":"post","link":"https:\/\/kiencang.net\/proxy-nguoc-la-gi\/","title":{"rendered":"Proxy ng\u01b0\u1ee3c l\u00e0 g\u00ec? V\u00e0 t\u1ea1i sao ng\u01b0\u1eddi qu\u1ea3n tr\u1ecb web ng\u00e0y nay c\u1ea7n bi\u1ebft thu\u1eadt ng\u1eef n\u00e0y"},"content":{"rendered":"\n<p><strong>V\u00e0i l\u1eddi c\u1ee7a ng\u01b0\u1eddi bi\u00ean t\u1eadp<\/strong>: trong b\u00e0i vi\u1ebft n\u00e0y Cloudflare gi\u00fap ch\u00fang ta hi\u1ec3u r\u00f5 h\u01a1n kh\u00e1i ni\u1ec7m proxy ng\u01b0\u1ee3c, m\u1ed9t kh\u00e1i ni\u1ec7m c\u0103n b\u1ea3n trong b\u1ea3o m\u1eadt &amp; ki\u1ec3m so\u00e1t truy c\u1eadp n\u00f3i chung, v\u00e0 CDN n\u00f3i ri\u00eang. Th\u1eadt t\u1ed1t l\u00e0 c\u00e1ch gi\u1ea3i th\u00edch c\u1ee7a h\u1ecd r\u1ea5t d\u1ec5 hi\u1ec3u.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<p>Proxy ng\u01b0\u1ee3c (reverse proxy) l\u00e0 m\u1ed9t m\u00e1y ch\u1ee7 \u0111\u1ee9ng \u0111\u1eb1ng tr\u01b0\u1edbc c\u00e1c m\u00e1y ch\u1ee7 web v\u00e0 th\u1ef1c hi\u1ec7n nhi\u1ec7m v\u1ee5 chuy\u1ec3n ti\u1ebfp c\u00e1c y\u00eau c\u1ea7u c\u1ee7a m\u00e1y kh\u00e1ch (v\u00ed d\u1ee5: tr\u00ecnh duy\u1ec7t web c\u1ee7a ng\u01b0\u1eddi d\u00f9ng) \u0111\u1ebfn c\u00e1c m\u00e1y ch\u1ee7 web \u0111\u00f3.&nbsp;<\/p>\n\n\n\n<p>C\u00e1c proxy ng\u01b0\u1ee3c th\u01b0\u1eddng \u0111\u01b0\u1ee3c tri\u1ec3n khai \u0111\u1ec3 gi\u00fap t\u0103ng c\u01b0\u1eddng&nbsp;b\u1ea3o m\u1eadt,&nbsp;hi\u1ec7u su\u1ea5t&nbsp;v\u00e0 \u0111\u1ed9 tin c\u1eady (c\u1ee7a phi\u00ean duy\u1ec7t web ho\u1eb7c \u1ee9ng d\u1ee5ng m\u1ea1ng b\u1ea5t k\u1ef3).&nbsp;\u0110\u1ec3 hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a proxy ng\u01b0\u1ee3c v\u00e0 nh\u1eefng l\u1ee3i \u00edch m\u00e0 n\u00f3 c\u00f3 th\u1ec3 mang l\u1ea1i, tr\u01b0\u1edbc ti\u00ean ch\u00fang ta h\u00e3y xem x\u00e9t \u0111\u1ecbnh ngh\u0129a m\u00e1y ch\u1ee7 proxy l\u00e0 g\u00ec?<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"may-ch\u1ee7-proxy-la-gi\">M\u00e1y ch\u1ee7 proxy l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p>M\u1ed9t proxy chuy\u1ec3n ti\u1ebfp \/ proxy thu\u1eadn (forward proxy), th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi ng\u1eafn g\u1ecdn l\u00e0 <em>proxy<\/em>, ho\u1eb7c <em>m\u00e1y ch\u1ee7 proxy<\/em>, ho\u1eb7c <em>proxy web<\/em>, l\u00e0 m\u1ed9t m\u00e1y ch\u1ee7 \u0111\u1eb7t tr\u01b0\u1edbc m\u1ed9t nh\u00f3m m\u00e1y kh\u00e1ch (client machines).\u00a0Khi c\u00e1c m\u00e1y t\u00ednh kh\u00e1ch \u0111\u00f3 th\u1ef1c hi\u1ec7n y\u00eau c\u1ea7u \u0111\u1ebfn c\u00e1c trang web v\u00e0 d\u1ecbch v\u1ee5 tr\u00ean Internet, m\u00e1y ch\u1ee7 proxy s\u1ebd ch\u1eb7n c\u00e1c y\u00eau c\u1ea7u \u0111\u00f3 v\u00e0 sau \u0111\u00f3 giao ti\u1ebfp v\u1edbi m\u00e1y ch\u1ee7 web theo ki\u1ec3u thay m\u1eb7t (\u1ee7y quy\u1ec1n \/ proxy) cho c\u00e1c m\u00e1y kh\u00e1ch \u0111\u00f3, gi\u1ed1ng nh\u01b0 m\u1ed9t ng\u01b0\u1eddi trung gian (gi\u1ed1ng ki\u1ec3u khi b\u1ea1n mua chung c\u01b0, s\u1ebd c\u00f3 m\u1ed9t nh\u00e2n vi\u00ean c\u1ee7a s\u00e0n giao d\u1ecbch l\u00e0m trung gian th\u1ef1c hi\u1ec7n vi\u1ec7c trao \u0111\u1ed5i th\u00f4ng tin gi\u1eefa ng\u01b0\u1eddi mua l\u00e0 b\u1ea1n, v\u00e0 ng\u01b0\u1eddi b\u00e1n l\u00e0 \u0111\u01a1n v\u1ecb x\u00e2y d\u1ef1ng chung c\u01b0).<\/p>\n\n\n\n<p>V\u00ed d\u1ee5: ch\u00fang t\u00f4i li\u1ec7t k\u00ea 3 m\u00e1y t\u00ednh li\u00ean quan \u0111\u1ebfn giao ti\u1ebfp proxy chuy\u1ec3n ti\u1ebfp \u0111i\u1ec3n h\u00ecnh:<\/p>\n\n\n\n<ul>\n<li>A: \u0110\u00e2y l\u00e0 m\u00e1y t\u00ednh gia \u0111\u00ecnh c\u1ee7a ng\u01b0\u1eddi d\u00f9ng;<\/li>\n\n\n\n<li>B: \u0110\u00e2y l\u00e0 m\u1ed9t m\u00e1y ch\u1ee7 proxy chuy\u1ec3n ti\u1ebfp;<\/li>\n\n\n\n<li>C: \u0110\u00e2y l\u00e0 <a href=\"https:\/\/kiencang.net\/may-chu-goc\/\" target=\"_blank\" rel=\"noreferrer noopener\">m\u00e1y ch\u1ee7 g\u1ed1c<\/a> c\u1ee7a trang web (n\u01a1i d\u1eef li\u1ec7u trang web \u0111ang l\u01b0u tr\u1eef).<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"475\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2021\/01\/proxy-chuyen-tiep-1024x475.png\" alt=\"proxy chuy\u1ec3n ti\u1ebfp c\u00f2n g\u1ecdi l\u00e0 proxy thu\u1eadn\" class=\"wp-image-18506\" srcset=\"https:\/\/kiencang.net\/wp-content\/uploads\/2021\/01\/proxy-chuyen-tiep-1024x475.png 1024w, https:\/\/kiencang.net\/wp-content\/uploads\/2021\/01\/proxy-chuyen-tiep-300x139.png 300w, https:\/\/kiencang.net\/wp-content\/uploads\/2021\/01\/proxy-chuyen-tiep-768x356.png 768w, https:\/\/kiencang.net\/wp-content\/uploads\/2021\/01\/proxy-chuyen-tiep.png 1220w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">M\u00e1y ch\u1ee7 proxy thu\u1eadn<\/figcaption><\/figure><\/div>\n\n\n<p>Trong giao ti\u1ebfp Internet ti\u00eau chu\u1ea9n, m\u00e1y t\u00ednh A s\u1ebd k\u1ebft n\u1ed1i tr\u1ef1c ti\u1ebfp v\u1edbi m\u00e1y ch\u1ee7 C, v\u1edbi m\u00e1y kh\u00e1ch g\u1eedi c\u00e1c y\u00eau c\u1ea7u \u0111\u1ebfn&nbsp;m\u00e1y ch\u1ee7 g\u1ed1c&nbsp;v\u00e0 m\u00e1y ch\u1ee7 g\u1ed1c ph\u1ea3n h\u1ed3i l\u1ea1i m\u00e1y kh\u00e1ch.&nbsp;<\/p>\n\n\n\n<p>Khi c\u00f3 proxy chuy\u1ec3n ti\u1ebfp, thay v\u00ec giao ti\u1ebfp tr\u1ef1c ti\u1ebfp th\u00ec A (m\u00e1y kh\u00e1ch) s\u1ebd g\u1eedi y\u00eau c\u1ea7u \u0111\u1ebfn B (proxy), sau \u0111\u00f3 s\u1ebd chuy\u1ec3n ti\u1ebfp y\u00eau c\u1ea7u \u0111\u1ebfn C (m\u00e1y ch\u1ee7 web g\u1ed1c). Sau \u0111\u00f3 C s\u1ebd g\u1eedi ph\u1ea3n h\u1ed3i t\u1edbi B, r\u1ed3i B m\u1edbi chuy\u1ec3n ti\u1ebfp ph\u1ea3n h\u1ed3i l\u1ea1i cho A \u0111\u1ec3 gi\u1ea3i quy\u1ebft y\u00eau c\u1ea7u c\u1ee7a m\u00e1y kh\u00e1ch.<\/p>\n\n\n\n<p>T\u1ea1i sao ai \u0111\u00f3 l\u1ea1i th\u00eam th\u00e0nh ph\u1ea7n trung gian b\u1ed5 sung n\u00e0y v\u00e0o ho\u1ea1t \u0111\u1ed9ng Internet c\u1ee7a h\u1ecd? Ch\u1eb3ng ph\u1ea3i nh\u01b0 v\u1eady s\u1ebd ph\u1ee9c t\u1ea1p &amp; m\u1ea5t th\u1eddi gian h\u01a1n hay sao?&nbsp;C\u00f3 m\u1ed9t s\u1ed1 l\u00fd do m\u00e0 ng\u01b0\u1eddi ta c\u00f3 th\u1ec3 mu\u1ed1n s\u1eed d\u1ee5ng proxy chuy\u1ec3n ti\u1ebfp:<\/p>\n\n\n\n<ul>\n<li><strong>\u0110\u1ec3 tr\u00e1nh c\u00e1c h\u1ea1n ch\u1ebf duy\u1ec7t web do c\u00e1c l\u00fd do ngo\u00e0i c\u00f4ng ngh\u1ec7<\/strong>&nbsp;&#8211; M\u1ed9t s\u1ed1 ch\u00ednh ph\u1ee7, tr\u01b0\u1eddng h\u1ecdc v\u00e0 c\u00e1c t\u1ed5 ch\u1ee9c kh\u00e1c s\u1eed d\u1ee5ng <a href=\"https:\/\/kiencang.net\/firewall-hay-tuong-lua\/\" target=\"_blank\" rel=\"noreferrer noopener\">t\u01b0\u1eddng l\u1eeda (firewall)<\/a> \u0111\u1ec3 c\u1ea5p cho ng\u01b0\u1eddi d\u00f9ng c\u1ee7a h\u1ecd quy\u1ec1n truy c\u1eadp v\u00e0o phi\u00ean b\u1ea3n gi\u1edbi h\u1ea1n c\u1ee7a Internet.&nbsp;M\u1ed9t proxy chuy\u1ec3n ti\u1ebfp c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 gi\u1ea3i quy\u1ebft nh\u1eefng h\u1ea1n ch\u1ebf n\u00e0y, v\u00ec ch\u00fang cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng k\u1ebft n\u1ed1i v\u1edbi proxy thay v\u00ec tr\u1ef1c ti\u1ebfp \u0111\u1ebfn c\u00e1c trang web h\u1ecd \u0111ang truy c\u1eadp.<\/li>\n\n\n\n<li><strong>\u0110\u1ec3 ch\u1eb7n quy\u1ec1n truy c\u1eadp v\u00e0o m\u1ed9t s\u1ed1 n\u1ed9i dung nh\u1ea5t \u0111\u1ecbnh<\/strong>&nbsp;&#8211; Ng\u01b0\u1ee3c l\u1ea1i, proxy c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp \u0111\u1ec3 ch\u1eb7n m\u1ed9t nh\u00f3m ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp c\u00e1c trang web nh\u1ea5t \u0111\u1ecbnh.&nbsp;V\u00ed d\u1ee5: m\u1ea1ng tr\u01b0\u1eddng h\u1ecdc c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1ecbnh c\u1ea5u h\u00ecnh \u0111\u1ec3 k\u1ebft n\u1ed1i v\u1edbi web th\u00f4ng qua proxy cho ph\u00e9p th\u1ef1c hi\u1ec7n c\u00e1c quy t\u1eafc l\u1ecdc n\u1ed9i dung (content filtering rules), t\u1eeb ch\u1ed1i chuy\u1ec3n ti\u1ebfp ph\u1ea3n h\u1ed3i t\u1eeb Facebook v\u00e0 c\u00e1c trang m\u1ea1ng x\u00e3 h\u1ed9i kh\u00e1c ch\u1eb3ng h\u1ea1n.<\/li>\n\n\n\n<li><strong>\u0110\u1ec3 b\u1ea3o v\u1ec7 danh t\u00ednh c\u1ee7a ng\u01b0\u1eddi d\u00f9ng khi tr\u1ef1c tuy\u1ebfn<\/strong>&nbsp;&#8211; Trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, ng\u01b0\u1eddi d\u00f9ng Internet th\u01b0\u1eddng xuy\u00ean ch\u1ec9 mu\u1ed1n t\u0103ng kh\u1ea3 n\u0103ng \u1ea9n danh c\u1ee7a b\u1ea3n th\u00e2n khi tr\u1ef1c tuy\u1ebfn, nh\u01b0ng c\u0169ng c\u00f3 nh\u1eefng tr\u01b0\u1eddng h\u1ee3p kh\u00e1c, khi m\u00e0 ng\u01b0\u1eddi d\u00f9ng Internet s\u1ed1ng \u1edf nh\u1eefng n\u01a1i m\u00e0 ch\u00ednh ph\u1ee7 c\u00f3 th\u1ec3 g\u00e2y h\u1eadu qu\u1ea3 nghi\u00eam tr\u1ecdng cho nh\u1eefng ng\u01b0\u1eddi b\u1ea5t \u0111\u1ed3ng ch\u00ednh ki\u1ebfn.&nbsp;Ch\u1ec9 tr\u00edch ch\u00ednh ph\u1ee7 trong m\u1ed9t di\u1ec5n \u0111\u00e0n web ho\u1eb7c tr\u00ean ph\u01b0\u01a1ng ti\u1ec7n truy\u1ec1n th\u00f4ng x\u00e3 h\u1ed9i c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn ti\u1ec1n ph\u1ea1t ho\u1eb7c b\u1ecf t\u00f9 cho nh\u1eefng ng\u01b0\u1eddi d\u00f9ng n\u00e0y.&nbsp;N\u1ebfu m\u1ed9t trong nh\u1eefng nh\u00e0 b\u1ea5t \u0111\u1ed3ng ch\u00ednh ki\u1ebfn \u200b\u200bn\u00e0y s\u1eed d\u1ee5ng proxy chuy\u1ec3n ti\u1ebfp \u0111\u1ec3 k\u1ebft n\u1ed1i v\u1edbi trang web n\u01a1i h\u1ecd \u0111\u0103ng c\u00e1c b\u00ecnh lu\u1eadn nh\u1ea1y c\u1ea3m v\u1ec1 m\u1eb7t ch\u00ednh tr\u1ecb, th\u00ec&nbsp;\u0111\u1ecba ch\u1ec9 IP&nbsp;\u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u0103ng b\u00ecnh lu\u1eadn s\u1ebd kh\u00f3 truy t\u00ecm l\u1ea1i ng\u01b0\u1eddi b\u1ea5t \u0111\u1ed3ng ch\u00ednh ki\u1ebfn \u200b\u200bh\u01a1n.&nbsp;Thay v\u00e0o \u0111\u00f3 ch\u1ec9 \u0111\u1ecba ch\u1ec9 IP c\u1ee7a m\u00e1y ch\u1ee7 proxy m\u1edbi \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"proxy-ng\u01b0\u1ee3c-khac-bi\u1ec7t-nh\u01b0-th\u1ebf-nao\">Proxy ng\u01b0\u1ee3c kh\u00e1c bi\u1ec7t nh\u01b0 th\u1ebf n\u00e0o?<\/h2>\n\n\n\n<p>M\u1ed9t proxy ng\u01b0\u1ee3c l\u00e0 m\u1ed9t m\u00e1y ch\u1ee7 \u0111\u1eb7t tr\u01b0\u1edbc m\u1ed9t ho\u1eb7c nhi\u1ec1u m\u00e1y ch\u1ee7 web, ch\u1eb7n c\u00e1c y\u00eau c\u1ea7u t\u1eeb m\u00e1y kh\u00e1ch.&nbsp;\u0110i\u1ec1u n\u00e0y kh\u00e1c v\u1edbi proxy chuy\u1ec3n ti\u1ebfp, n\u01a1i proxy \u0111\u1eb7t tr\u01b0\u1edbc m\u00e1y kh\u00e1ch.&nbsp;<\/p>\n\n\n\n<p>V\u1edbi proxy ng\u01b0\u1ee3c, khi m\u00e1y kh\u00e1ch g\u1eedi y\u00eau c\u1ea7u \u0111\u1ebfn m\u00e1y ch\u1ee7 g\u1ed1c c\u1ee7a m\u1ed9t trang web, nh\u1eefng y\u00eau c\u1ea7u \u0111\u00f3 s\u1ebd b\u1ecb ch\u1eb7n \u1edf bi\u00ean&nbsp;m\u1ea1ng&nbsp;b\u1edfi m\u00e1y ch\u1ee7 proxy ng\u01b0\u1ee3c.&nbsp;Sau \u0111\u00f3, m\u00e1y ch\u1ee7 proxy ng\u01b0\u1ee3c s\u1ebd g\u1eedi y\u00eau c\u1ea7u \u0111\u1ebfn v\u00e0 nh\u1eadn ph\u1ea3n h\u1ed3i t\u1eeb m\u00e1y ch\u1ee7 g\u1ed1c.<\/p>\n\n\n\n<p>S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa proxy thu\u1eadn v\u00e0 ng\u01b0\u1ee3c l\u00e0 nh\u1ecf nh\u01b0ng r\u1ea5t quan tr\u1ecdng.&nbsp;M\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n, d\u1ec5 hi\u1ec3u h\u01a1n \u0111\u1ec3 t\u00f3m t\u1eaft l\u00e0: m\u1ed9t proxy chuy\u1ec3n ti\u1ebfp (thu\u1eadn) n\u1eb1m tr\u01b0\u1edbc m\u1ed9t m\u00e1y kh\u00e1ch v\u00e0 \u0111\u1ea3m b\u1ea3o r\u1eb1ng kh\u00f4ng c\u00f3 m\u00e1y ch\u1ee7 g\u1ed1c n\u00e0o giao ti\u1ebfp tr\u1ef1c ti\u1ebfp v\u1edbi m\u00e1y kh\u00e1ch c\u1ee5 th\u1ec3 \u0111\u00f3.&nbsp;M\u1eb7t kh\u00e1c, proxy ng\u01b0\u1ee3c n\u1eb1m tr\u01b0\u1edbc m\u00e1y ch\u1ee7 g\u1ed1c v\u00e0 \u0111\u1ea3m b\u1ea3o r\u1eb1ng kh\u00f4ng c\u00f3 m\u00e1y kh\u00e1ch n\u00e0o giao ti\u1ebfp tr\u1ef1c ti\u1ebfp v\u1edbi m\u00e1y ch\u1ee7 g\u1ed1c \u0111\u00f3.<\/p>\n\n\n\n<p>M\u1ed9t l\u1ea7n n\u1eefa, ch\u00fang ta h\u00e3y minh h\u1ecda b\u1eb1ng c\u00e1ch \u0111\u1eb7t t\u00ean cho c\u00e1c m\u00e1y t\u00ednh li\u00ean quan:<\/p>\n\n\n\n<ul>\n<li>D: S\u1ed1 l\u01b0\u1ee3ng m\u00e1y t\u00ednh b\u1ea5t k\u1ef3 c\u1ee7a ng\u01b0\u1eddi d\u00f9ng;<\/li>\n\n\n\n<li>E: \u0110\u00e2y l\u00e0 m\u1ed9t m\u00e1y ch\u1ee7 proxy ng\u01b0\u1ee3c;<\/li>\n\n\n\n<li>F: M\u1ed9t ho\u1eb7c nhi\u1ec1u m\u00e1y ch\u1ee7 g\u1ed1c (origin servers).<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"486\" src=\"https:\/\/kiencang.net\/wp-content\/uploads\/2021\/01\/proxy-nguoc-1024x486.png\" alt=\"proxy ng\u01b0\u1ee3c hay reverse proxy\" class=\"wp-image-18507\" srcset=\"https:\/\/kiencang.net\/wp-content\/uploads\/2021\/01\/proxy-nguoc-1024x486.png 1024w, https:\/\/kiencang.net\/wp-content\/uploads\/2021\/01\/proxy-nguoc-300x142.png 300w, https:\/\/kiencang.net\/wp-content\/uploads\/2021\/01\/proxy-nguoc-768x364.png 768w, https:\/\/kiencang.net\/wp-content\/uploads\/2021\/01\/proxy-nguoc.png 1314w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Proxy ng\u01b0\u1ee3c<\/figcaption><\/figure><\/div>\n\n\n<p>Th\u00f4ng th\u01b0\u1eddng, t\u1ea5t c\u1ea3 c\u00e1c y\u00eau c\u1ea7u t\u1eeb D s\u1ebd chuy\u1ec3n tr\u1ef1c ti\u1ebfp \u0111\u1ebfn F v\u00e0 F s\u1ebd g\u1eedi ph\u1ea3n h\u1ed3i tr\u1ef1c ti\u1ebfp \u0111\u1ebfn D. V\u1edbi proxy ng\u01b0\u1ee3c, t\u1ea5t c\u1ea3 c\u00e1c y\u00eau c\u1ea7u t\u1eeb D (m\u00e1y t\u00ednh c\u00e1 nh\u00e2n) s\u1ebd chuy\u1ec3n tr\u1ef1c ti\u1ebfp \u0111\u1ebfn E (proxy ng\u01b0\u1ee3c) v\u00e0 E s\u1ebd g\u1eedi y\u00eau c\u1ea7u c\u1ee7a m\u00ecnh \u0111\u1ebfn v\u00e0 nh\u1eadn ph\u1ea3n h\u1ed3i t\u1eeb F (m\u00e1y ch\u1ee7 g\u1ed1c). E sau \u0111\u00f3 s\u1ebd <strong>chuy\u1ec3n c\u00e1c c\u00e2u tr\u1ea3 l\u1eddi th\u00edch h\u1ee3p <\/strong>cho D.<\/p>\n\n\n\n<p>D\u01b0\u1edbi \u0111\u00e2y, ch\u00fang t\u00f4i ph\u00e1c th\u1ea3o m\u1ed9t s\u1ed1 l\u1ee3i \u00edch c\u1ee7a proxy ng\u01b0\u1ee3c:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/kiencang.net\/can-bang-tai-cua-cloudflare\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>C\u00e2n b\u1eb1ng t\u1ea3i<\/strong> (load balancing)<\/a>\u00a0&#8211; M\u1ed9t trang web ph\u1ed5 bi\u1ebfn c\u00f3 h\u00e0ng tri\u1ec7u ng\u01b0\u1eddi d\u00f9ng m\u1ed7i ng\u00e0y c\u00f3 th\u1ec3 kh\u00f4ng th\u1ec3 x\u1eed l\u00fd t\u1ea5t c\u1ea3 l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp trang web \u0111\u1ebfn n\u00f3 b\u1eb1ng m\u1ed9t m\u00e1y ch\u1ee7 g\u1ed1c duy nh\u1ea5t.\u00a0Thay v\u00e0o \u0111\u00f3, trang web c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n ph\u1ed1i gi\u1eefa m\u1ed9t nh\u00f3m c\u00e1c m\u00e1y ch\u1ee7 kh\u00e1c nhau, t\u1ea5t c\u1ea3 \u0111\u1ec1u x\u1eed l\u00fd c\u00e1c y\u00eau c\u1ea7u cho c\u00f9ng m\u1ed9t trang web.\u00a0Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y, proxy ng\u01b0\u1ee3c c\u00f3 th\u1ec3 cung c\u1ea5p gi\u1ea3i ph\u00e1p c\u00e2n b\u1eb1ng t\u1ea3i \u0111\u1ec3 ph\u00e2n ph\u1ed1i \u0111\u1ed3ng \u0111\u1ec1u l\u01b0u l\u01b0\u1ee3ng \u0111\u1ebfn gi\u1eefa c\u00e1c m\u00e1y ch\u1ee7 kh\u00e1c nhau nh\u1eb1m ng\u0103n b\u1ea5t k\u1ef3 m\u00e1y ch\u1ee7 \u0111\u01a1n l\u1ebb n\u00e0o b\u1ecb qu\u00e1 t\u1ea3i.\u00a0Trong tr\u01b0\u1eddng h\u1ee3p m\u1ed9t m\u00e1y ch\u1ee7 b\u1ecb l\u1ed7i ho\u00e0n to\u00e0n, c\u00e1c m\u00e1y ch\u1ee7 kh\u00e1c c\u00f3 th\u1ec3 x\u1eed l\u00fd l\u01b0u l\u01b0\u1ee3ng. PS: kh\u1ea3 n\u0103ng n\u00e0y kh\u00f4ng ch\u1ec9 gi\u00fap m\u00e1y ch\u1ee7 web g\u1ed1c c\u00f3 kh\u1ea3 n\u0103ng \u0111\u00e0n h\u1ed3i t\u1ed1t v\u1edbi c\u00e1c l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp t\u0103ng gi\u1ea3m b\u1ea5t th\u01b0\u1eddng, m\u00e0 c\u00f2n gi\u00fap h\u1ecd ti\u1ebft ki\u1ec7m chi ph\u00ed h\u01a1n so v\u1edbi vi\u1ec7c ph\u1ea3i thu\u00ea m\u00e1y ch\u1ee7 g\u1ed1c &#8220;si\u00eau to kh\u1ed5ng l\u1ed3&#8221; \u0111\u1ec3 x\u1eed l\u00fd l\u01b0\u1ee3ng truy c\u1eadp l\u00ean \u0111\u1ebfn \u0111\u1ec9nh \u0111i\u1ec3m v\u00e0o m\u1ed9t th\u1eddi \u0111i\u1ec3m n\u00e0o \u0111\u00f3 trong ng\u00e0y;<\/li>\n\n\n\n<li><strong>B\u1ea3o v\u1ec7 tr\u00e1nh s\u1eadp trang khi c\u00f3 c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng<\/strong>\u00a0&#8211; V\u1edbi proxy ng\u01b0\u1ee3c, m\u1ed9t trang web ho\u1eb7c d\u1ecbch v\u1ee5 kh\u00f4ng bao gi\u1edd c\u1ea7n ti\u1ebft l\u1ed9 \u0111\u1ecba ch\u1ec9 IP c\u1ee7a (c\u00e1c) m\u00e1y ch\u1ee7 g\u1ed1c c\u1ee7a ch\u00fang.\u00a0\u0110i\u1ec1u n\u00e0y khi\u1ebfn nh\u1eefng k\u1ebb t\u1ea5n c\u00f4ng kh\u00f3 th\u1ef1c hi\u1ec7n m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng c\u00f3 ch\u1ee7 \u0111\u00edch ch\u1ed1ng l\u1ea1i h\u1ecd, ch\u1eb3ng h\u1ea1n nh\u01b0 <a href=\"https:\/\/kiencang.net\/ddos-la-gi\/\" target=\"_blank\" rel=\"noreferrer noopener\">t\u1ea5n c\u00f4ng DDoS<\/a>.\u00a0Thay v\u00e0o \u0111\u00f3, nh\u1eefng k\u1ebb t\u1ea5n c\u00f4ng ch\u1ec9 c\u00f3 th\u1ec3 nh\u1eafm m\u1ee5c ti\u00eau v\u00e0o proxy ng\u01b0\u1ee3c, ch\u1eb3ng h\u1ea1n nh\u01b0\u00a0CDN\u00a0c\u1ee7a Cloudflare- h\u1ec7 th\u1ed1ng v\u1ed1n c\u00f3 b\u1ea3o m\u1eadt ch\u1eb7t ch\u1ebd h\u01a1n v\u00e0 nhi\u1ec1u t\u00e0i nguy\u00ean h\u01a1n r\u1ea5t nhi\u1ec1u (so m\u00e1y ch\u1ee7 hosting ri\u00eang l\u1ebb b\u1ea5t k\u1ef3) \u0111\u1ec3 ch\u1ed1ng l\u1ea1i m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng m\u1ea1ng nh\u01b0 v\u1eady;<\/li>\n\n\n\n<li><strong><a href=\"https:\/\/kiencang.net\/global-server-load-balancing\/\" target=\"_blank\" rel=\"noreferrer noopener\">C\u00e2n b\u1eb1ng t\u1ea3i tr\u00ean m\u00e1y ch\u1ee7 to\u00e0n c\u1ea7u&nbsp;(GSLB)<\/a><\/strong>&nbsp;&#8211; Trong h\u00ecnh th\u1ee9c c\u00e2n b\u1eb1ng t\u1ea3i n\u00e0y, m\u1ed9t trang web c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n ph\u1ed1i tr\u00ean m\u1ed9t s\u1ed1 m\u00e1y ch\u1ee7 tr\u00ean to\u00e0n c\u1ea7u v\u00e0 proxy ng\u01b0\u1ee3c s\u1ebd g\u1eedi m\u00e1y kh\u00e1ch \u0111\u1ebfn m\u00e1y ch\u1ee7 g\u1ea7n nh\u1ea5t v\u1ec1 m\u1eb7t \u0111\u1ecba l\u00fd v\u1edbi h\u1ecd.&nbsp;\u0110i\u1ec1u n\u00e0y l\u00e0m gi\u1ea3m kho\u1ea3ng c\u00e1ch m\u00e0 c\u00e1c y\u00eau c\u1ea7u v\u00e0 ph\u1ea3n h\u1ed3i c\u1ea7n ph\u1ea3i di chuy\u1ec3n, gi\u00fap gi\u1ea3m thi\u1ec3u th\u1eddi gian t\u1ea3i trang.<\/li>\n\n\n\n<li><strong><a href=\"https:\/\/kiencang.net\/caching-la-gi\/\" target=\"_blank\" rel=\"noreferrer noopener\">B\u1ed9 nh\u1edb \u0111\u1ec7m (caching)<\/a><\/strong>&nbsp;&#8211; M\u1ed9t proxy ng\u01b0\u1ee3c c\u0169ng c\u00f3 th\u1ec3&nbsp;l\u01b0u&nbsp;n\u1ed9i dung v\u00e0o&nbsp;b\u1ed9 nh\u1edb cache, gi\u00fap hi\u1ec7u su\u1ea5t nhanh h\u01a1n.&nbsp;V\u00ed d\u1ee5: n\u1ebfu ng\u01b0\u1eddi d\u00f9ng \u1edf Paris truy c\u1eadp trang web \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 proxy ng\u01b0\u1ee3c v\u1edbi m\u00e1y ch\u1ee7 web \u1edf Los Angeles, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 th\u1ef1c s\u1ef1 k\u1ebft n\u1ed1i v\u1edbi m\u00e1y ch\u1ee7 proxy ng\u01b0\u1ee3c c\u1ee5c b\u1ed9 \u1edf Paris, sau \u0111\u00f3 m\u1edbi ph\u1ea3i giao ti\u1ebfp v\u1edbi m\u00e1y ch\u1ee7 g\u1ed1c \u1edf LA. M\u00e1y ch\u1ee7 proxy sau \u0111\u00f3 c\u00f3 th\u1ec3 l\u01b0u v\u00e0o b\u1ed9 nh\u1edb cache (ho\u1eb7c t\u1ea1m th\u1eddi l\u01b0u) d\u1eef li\u1ec7u ph\u1ea3n h\u1ed3i.&nbsp;Nh\u1eefng ng\u01b0\u1eddi d\u00f9ng Paris ti\u1ebfp theo duy\u1ec7t trang web sau n\u00e0y s\u1ebd nh\u1eadn \u0111\u01b0\u1ee3c phi\u00ean b\u1ea3n \u0111\u01b0\u1ee3c l\u01b0u trong b\u1ed9 nh\u1edb cache c\u1ee5c b\u1ed9 t\u1eeb m\u00e1y ch\u1ee7 proxy ng\u01b0\u1ee3c \u1edf Paris, do v\u1eady hi\u1ec7u su\u1ea5t nhanh h\u01a1n nhi\u1ec1u.<\/li>\n\n\n\n<li><strong><a href=\"https:\/\/kiencang.net\/chung-chi-ssl-la-gi\/\" target=\"_blank\" rel=\"noreferrer noopener\">M\u00e3 h\u00f3a SSL<\/a><\/strong>&nbsp;&#8211;&nbsp;M\u00e3 h\u00f3a&nbsp;v\u00e0 gi\u1ea3i m\u00e3&nbsp;th\u00f4ng tin li\u00ean l\u1ea1c&nbsp;SSL&nbsp;(ho\u1eb7c&nbsp;TLS) cho t\u1eebng m\u00e1y kh\u00e1ch c\u00f3 th\u1ec3 t\u1ed1n k\u00e9m v\u1ec1 m\u1eb7t t\u00ednh to\u00e1n \u0111\u1ed1i v\u1edbi m\u00e1y ch\u1ee7 g\u1ed1c.&nbsp;M\u1ed9t proxy ng\u01b0\u1ee3c c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh \u0111\u1ec3 gi\u1ea3i m\u00e3 t\u1ea5t c\u1ea3 c\u00e1c y\u00eau c\u1ea7u \u0111\u1ebfn v\u00e0 m\u00e3 h\u00f3a t\u1ea5t c\u1ea3 c\u00e1c ph\u1ea3n h\u1ed3i g\u1eedi \u0111i, gi\u00fap gi\u1ea3i ph\u00f3ng c\u00e1c t\u00e0i nguy\u00ean c\u00f3 gi\u00e1 tr\u1ecb tr\u00ean m\u00e1y ch\u1ee7 g\u1ed1c.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"cach-tri\u1ec3n-khai-proxy-ng\u01b0\u1ee3c\">C\u00e1ch tri\u1ec3n khai proxy ng\u01b0\u1ee3c<\/h2>\n\n\n\n<p>M\u1ed9t s\u1ed1 c\u00f4ng ty x\u00e2y d\u1ef1ng proxy ng\u01b0\u1ee3c c\u1ee7a ri\u00eang h\u1ecd, tuy nhi\u00ean \u0111i\u1ec1u n\u00e0y \u0111\u00f2i h\u1ecfi ngu\u1ed3n l\u1ef1c k\u1ef9 thu\u1eadt ph\u1ea7n c\u1ee9ng v\u00e0 c\u1ea3 ph\u1ea7n m\u1ec1m chuy\u00ean s\u00e2u, c\u0169ng nh\u01b0 \u0111\u1ea7u t\u01b0 \u0111\u00e1ng k\u1ec3 ti\u1ec1n c\u1ee7a v\u00e0o ph\u1ea7n c\u1ee9ng v\u1eadt l\u00fd.&nbsp;<\/p>\n\n\n\n<p>M\u1ed9t trong nh\u1eefng c\u00e1ch d\u1ec5 h\u01a1n c\u0169ng nh\u01b0 ti\u1ebft ki\u1ec7m chi ph\u00ed nh\u1ea5t \u0111\u1ec3 t\u1eadn d\u1ee5ng t\u1ea5t c\u1ea3 c\u00e1c l\u1ee3i \u00edch c\u1ee7a proxy ng\u01b0\u1ee3c l\u00e0 \u0111\u0103ng k\u00fd <a href=\"https:\/\/kiencang.net\/category\/cdn\/\" target=\"_blank\" rel=\"noreferrer noopener\">d\u1ecbch v\u1ee5 CDN<\/a>.&nbsp;V\u00ed d\u1ee5:&nbsp;Cloudflare CDN&nbsp;cung c\u1ea5p t\u1ea5t c\u1ea3 c\u00e1c t\u00ednh n\u0103ng hi\u1ec7u su\u1ea5t v\u00e0 b\u1ea3o m\u1eadt \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea \u1edf tr\u00ean, c\u0169ng nh\u01b0 nhi\u1ec1u t\u00ednh n\u0103ng kh\u00e1c.<\/p>\n\n\n\n<p><em>(D\u1ecbch t\u1eeb b\u00e0i vi\u1ebft <a href=\"https:\/\/www.cloudflare.com\/learning\/cdn\/glossary\/reverse-proxy\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">What Is A Reverse Proxy? Proxy Servers Explained c\u1ee7a Cloudflare<\/a>)<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>V\u00e0i l\u1eddi c\u1ee7a ng\u01b0\u1eddi bi\u00ean t\u1eadp: trong b\u00e0i vi\u1ebft n\u00e0y Cloudflare gi\u00fap ch\u00fang ta hi\u1ec3u r\u00f5 h\u01a1n kh\u00e1i ni\u1ec7m proxy ng\u01b0\u1ee3c, m\u1ed9t kh\u00e1i ni\u1ec7m c\u0103n b\u1ea3n trong b\u1ea3o m\u1eadt &amp; ki\u1ec3m so\u00e1t truy c\u1eadp n\u00f3i chung, v\u00e0 CDN n\u00f3i ri\u00eang. Th\u1eadt t\u1ed1t l\u00e0 c\u00e1ch gi\u1ea3i th\u00edch c\u1ee7a h\u1ecd r\u1ea5t d\u1ec5 hi\u1ec3u. Proxy ng\u01b0\u1ee3c (reverse proxy) &hellip;<\/p>\n","protected":false},"author":1,"featured_media":24700,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[252],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Proxy ng\u01b0\u1ee3c l\u00e0 g\u00ec? V\u00e0 t\u1ea1i sao ng\u01b0\u1eddi qu\u1ea3n tr\u1ecb web ng\u00e0y nay c\u1ea7n bi\u1ebft thu\u1eadt ng\u1eef n\u00e0y &#8226; Ki\u1ebfn c\u00e0ng<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/kiencang.net\/proxy-nguoc-la-gi\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Proxy ng\u01b0\u1ee3c l\u00e0 g\u00ec? V\u00e0 t\u1ea1i sao ng\u01b0\u1eddi qu\u1ea3n tr\u1ecb web ng\u00e0y nay c\u1ea7n bi\u1ebft thu\u1eadt ng\u1eef n\u00e0y &#8226; Ki\u1ebfn c\u00e0ng\" \/>\n<meta property=\"og:description\" content=\"V\u00e0i l\u1eddi c\u1ee7a ng\u01b0\u1eddi bi\u00ean t\u1eadp: trong b\u00e0i vi\u1ebft n\u00e0y Cloudflare gi\u00fap ch\u00fang ta hi\u1ec3u r\u00f5 h\u01a1n kh\u00e1i ni\u1ec7m proxy ng\u01b0\u1ee3c, m\u1ed9t kh\u00e1i ni\u1ec7m c\u0103n b\u1ea3n trong b\u1ea3o m\u1eadt &amp; ki\u1ec3m so\u00e1t truy c\u1eadp n\u00f3i chung, v\u00e0 CDN n\u00f3i ri\u00eang. Th\u1eadt t\u1ed1t l\u00e0 c\u00e1ch gi\u1ea3i th\u00edch c\u1ee7a h\u1ecd r\u1ea5t d\u1ec5 hi\u1ec3u. 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