{"id":468687,"date":"2020-11-10T00:00:00","date_gmt":"2020-11-10T00:00:00","guid":{"rendered":"https:\/\/proxycompass.com\/knowledge-base\/what-are-free-or-public-proxies\/"},"modified":"2024-05-23T04:28:11","modified_gmt":"2024-05-23T04:28:11","slug":"what-are-free-or-public-proxies","status":"publish","type":"knowledge-base","link":"https:\/\/proxycompass.com\/vi\/knowledge-base\/what-are-free-or-public-proxies\/","title":{"rendered":"Proxy mi\u1ec5n ph\u00ed ho\u1eb7c c\u00f4ng khai l\u00e0 g\u00ec?"},"content":{"rendered":"

\"S\u01a1<\/a><\/p>\n

C\u00e1i g\u1ecdi l\u00e0 proxy \u201cmi\u1ec5n ph\u00ed\u201d ho\u1eb7c \u201cc\u00f4ng khai\u201d l\u00e0 danh s\u00e1ch c\u00e1c \u0111\u1ecba ch\u1ec9 IP c\u00f3 th\u1ec3 truy c\u1eadp mi\u1ec5n ph\u00ed \u0111\u01b0\u1ee3c xu\u1ea5t b\u1ea3n tr\u00ean nhi\u1ec1u t\u00e0i nguy\u00ean tr\u1ef1c tuy\u1ebfn kh\u00e1c nhau.<\/p>\n

Proxy c\u00f4ng c\u1ed9ng \u0111\u1ebfn t\u1eeb \u0111\u00e2u?<\/h2>\n

Proxy c\u00f4ng c\u1ed9ng c\u00f3 th\u1ec3 \u0111\u1ebfn t\u1eeb nhi\u1ec1u ngu\u1ed3n kh\u00e1c nhau.<\/p>\n

V\u00ed d\u1ee5 \u0111\u1ea7u ti\u00ean: Qu\u1ea3n tr\u1ecb vi\u00ean m\u00e1y ch\u1ee7 thi\u1ebfu kinh nghi\u1ec7m (v\u00ed d\u1ee5: qu\u1ea3n tr\u1ecb vi\u00ean trong c\u01a1 s\u1edf gi\u00e1o d\u1ee5c) c\u00e0i \u0111\u1eb7t t\u1eadp l\u1ec7nh proxy theo y\u00eau c\u1ea7u c\u1ee7a c\u01a1 s\u1edf, nh\u01b0ng kh\u00f4ng thay \u0111\u1ed5i c\u00e1c c\u1ed5ng m\u1eb7c \u0111\u1ecbnh (80, 3128) v\u00e0 kh\u00f4ng b\u1ea3o m\u1eadt ch\u00fang b\u1eb1ng m\u1eadt kh\u1ea9u. Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y, m\u00e1y ch\u1ee7 c\u1ee7a t\u1ed5 ch\u1ee9c s\u1ebd tr\u1edf th\u00e0nh proxy c\u00f4ng c\u1ed9ng.<\/p>\n

V\u00ed d\u1ee5 th\u1ee9 hai: Ng\u01b0\u1eddi d\u00f9ng Internet t\u1ea3i xu\u1ed1ng m\u1ed9t ch\u01b0\u01a1ng tr\u00ecnh c\u00f3 l\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt v\u00e0 kh\u00f4ng th\u1ec3 c\u1eadp nh\u1eadt do t\u00ednh n\u0103ng b\u1ea3o v\u1ec7 b\u1ea3n sao \u0111\u00e3 b\u1ecb x\u00f3a (\u201cph\u1ea7n m\u1ec1m b\u1ecb b\u1ebb kh\u00f3a\u201d) ho\u1eb7c m\u1ed9t Trojan \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00e0i \u0111\u1eb7t. Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y, m\u00e1y t\u00ednh ri\u00eang s\u1ebd tr\u1edf th\u00e0nh proxy c\u00f4ng c\u1ed9ng.<\/p>\n

T\u1ea5t c\u1ea3 c\u00e1c m\u00e1y ch\u1ee7 v\u00e0 m\u00e1y t\u00ednh ri\u00eang n\u00e0y hi\u1ec7n c\u00f3 th\u1ec3 truy c\u1eadp \u0111\u01b0\u1ee3c t\u1eeb b\u00ean ngo\u00e0i. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 n\u1ebfu b\u1ea1n bi\u1ebft IP c\u1ee7a h\u1ecd v\u00e0 c\u1ed5ng n\u01a1i proxy \u0111\u01b0\u1ee3c m\u1edf, m\u00e1y t\u00ednh t\u1eeb xa n\u00e0y c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n ch\u1ee9c n\u0103ng c\u1ee7a proxy, t\u1ee9c l\u00e0 b\u1ea1n c\u00f3 th\u1ec3 g\u1eedi v\u00e0 nh\u1eadn y\u00eau c\u1ea7u \u0111\u1ebfn c\u00e1c m\u00e1y ch\u1ee7 kh\u00e1c th\u00f4ng qua n\u00f3.<\/p>\n

Proxy mi\u1ec5n ph\u00ed b\u1eaft ngu\u1ed3n t\u1eeb \u0111\u00e2u<\/h2>\n

D\u1ea3i \u0111\u1ecba ch\u1ec9 IP \u0111\u01b0\u1ee3c qu\u00e9t b\u1eb1ng c\u00e1c ch\u01b0\u01a1ng tr\u00ecnh nh\u01b0 Charon, th\u01b0\u1eddng l\u00e0 t\u1eeb c\u00e1c m\u00e1y ch\u1ee7 b\u1ecb nhi\u1ec5m t\u01b0\u01a1ng t\u1ef1. Ch\u00fa \u00fd: \u0110i\u1ec1u n\u00e0y l\u00e0 b\u1ea5t h\u1ee3p ph\u00e1p v\u00e0 c\u00f3 th\u1ec3 c\u00f3 h\u1eadu qu\u1ea3 ph\u00e1p l\u00fd cho c\u00e1c ho\u1ea1t \u0111\u1ed9ng \u0111\u00f3. C\u00e1c \u0111\u1ecba ch\u1ec9 IP sau \u0111\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 g\u1eedi th\u01b0 r\u00e1c qua c\u00e1c c\u1ed5ng SMTP c\u0169ng nh\u01b0 c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng v\u0169 phu v\u00e0 DDoS.<\/p>\n

Sau khi c\u00e1c proxy nh\u01b0 v\u1eady kh\u00f4ng c\u00f2n s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c (t\u1ee9c l\u00e0 khi IP c\u1ee7a ch\u00fang \u0111\u01b0\u1ee3c th\u00eam v\u00e0o c\u01a1 s\u1edf d\u1eef li\u1ec7u th\u01b0 r\u00e1c), ch\u00fang th\u01b0\u1eddng \u0111\u01b0\u1ee3c xu\u1ea5t b\u1ea3n tr\u00ean c\u00e1c di\u1ec5n \u0111\u00e0n kh\u00f4ng h\u1ea1n ch\u1ebf.<\/p>\n

Ch\u00fang t\u00f4i \u0111\u1eb7c bi\u1ec7t khuy\u1ebfn kh\u00edch s\u1eed d\u1ee5ng c\u00e1c proxy nh\u01b0 v\u1eady \u0111\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u quan tr\u1ecdng: v\u00ed d\u1ee5: cho m\u1ea1ng x\u00e3 h\u1ed9i, tin nh\u1eafn t\u1ee9c th\u1eddi v\u00e0 \u0111\u1eb7c bi\u1ec7t l\u00e0 \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c giao d\u1ecbch t\u00e0i ch\u00ednh.<\/p>\n

Ai s\u1eed d\u1ee5ng proxy c\u00f4ng c\u1ed9ng?<\/h2>\n

B\u1ea5t ch\u1ea5p m\u1ecdi r\u1ee7i ro li\u00ean quan \u0111\u1ebfn vi\u1ec7c s\u1eed d\u1ee5ng proxy c\u00f4ng c\u1ed9ng, ch\u00fang v\u1eabn c\u00f3 nhu c\u1ea7u r\u1ea5t l\u1edbn \u0111\u1ed1i v\u1edbi c\u00e1c chuy\u00ean gia SEO. B\u1edfi v\u00ec th\u00f4ng th\u01b0\u1eddng Google kh\u00f4ng qu\u1ea3n l\u00fd \u0111\u1ec3 ch\u1eb7n ch\u00fang v\u00e0 ch\u00fang c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ph\u00e2n t\u00edch k\u1ebft qu\u1ea3 t\u00ecm ki\u1ebfm.<\/p>\n

\"M\u00e1y<\/a><\/p>\n

B\u1ea1n c\u00f3 th\u1ec3 t\u00ecm th\u1ea5y danh s\u00e1ch c\u00e1c proxy nh\u01b0 v\u1eady tr\u00ean trang v\u1edbi proxy mi\u1ec5n ph\u00ed.<\/a><\/p>\n

Tuy nhi\u00ean, c\u0169ng c\u00f3 nh\u1eefng d\u1ecbch v\u1ee5 tr\u1ef1c tuy\u1ebfn cung c\u1ea5p danh s\u00e1ch \u0111\u1ecba ch\u1ec9 IP \u0111\u1ec3 ki\u1ebfm ti\u1ec1n. C\u00e1c proxy n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c thu th\u1eadp v\u1edbi s\u1ef1 tr\u1ee3 gi\u00fap c\u1ee7a tr\u00ecnh ph\u00e2n t\u00edch c\u00fa ph\u00e1p trong c\u00e1c di\u1ec5n \u0111\u00e0n proxy n\u1ed5i ti\u1ebfng v\u00e0 c\u00e1c trang web kh\u00e1c.<\/p>\n

Tr\u01b0\u1edbc khi b\u00e1n, danh s\u00e1ch \u0111\u01b0\u1ee3c ki\u1ec3m tra tr\u00f9ng l\u1eb7p v\u00e0 t\u00ecnh tr\u1ea1ng c\u00f2n h\u00e0ng, s\u1eafp x\u1ebfp theo v\u1ecb tr\u00ed \u0111\u1ecba l\u00fd v\u00e0 giao th\u1ee9c r\u1ed3i g\u1eedi cho kh\u00e1ch h\u00e0ng.<\/p>\n

Nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a danh s\u00e1ch proxy mi\u1ec5n ph\u00ed<\/h2>\n

Nh\u1eefng ng\u01b0\u1eddi mua ti\u1ec1m n\u0103ng c\u1ee7a c\u00e1c danh s\u00e1ch nh\u01b0 v\u1eady n\u00ean bi\u1ebft r\u1eb1ng c\u00e1c d\u1ecbch v\u1ee5 cung c\u1ea5p c\u00e1c danh s\u00e1ch \u0111\u00f3 kh\u00f4ng c\u00f3 quy\u1ec1n ki\u1ec3m so\u00e1t c\u00e1c m\u00e1y ch\u1ee7 proxy \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea. Kh\u00f4ng th\u1ec3 ki\u1ec3m tra xem nh\u1eefng proxy nh\u01b0 v\u1eady \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho m\u1ee5c \u0111\u00edch g\u00ec v\u00e0 c\u00f3 bao nhi\u00eau ng\u01b0\u1eddi s\u1eed d\u1ee5ng.<\/p>\n

Nh\u1eefng proxy nh\u01b0 v\u1eady th\u01b0\u1eddng kh\u00f4ng c\u00f3 \u201ctu\u1ed5i th\u1ecd\u201d d\u00e0i \u0336 th\u01b0\u1eddng cho \u0111\u1ebfn khi qu\u1ea3n tr\u1ecb vi\u00ean m\u00e1y ch\u1ee7 ho\u1eb7c ch\u1ee7 s\u1edf h\u1eefu m\u00e1y t\u00ednh nh\u1eadn th\u1ea5y m\u1ee9c t\u1ea3i cao b\u1ea5t th\u01b0\u1eddng v\u00e0 \u0111\u00f3ng l\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt (ho\u1eb7c \u0111\u01a1n gi\u1ea3n l\u00e0 c\u00e0i \u0111\u1eb7t l\u1ea1i h\u1ec7 th\u1ed1ng).<\/p>","protected":false},"excerpt":{"rendered":"

So-called “free” or “public” proxies are freely accessible lists of IP addresses published on various online resources. Where Do Public Proxies Come From? Public proxies can come from different sources. First example: An inexperienced server administrator (e.g. an administrator in an educational institution) installs a proxy script for the institution’s requirements, but does not change […]<\/p>\n","protected":false},"featured_media":469570,"menu_order":0,"template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"kb-categories":[69,70],"class_list":["post-468687","knowledge-base","type-knowledge-base","status-publish","has-post-thumbnail","hentry","kb-categories-proxy-types","kb-categories-types-of-proxy-services"],"acf":[],"_links":{"self":[{"href":"https:\/\/proxycompass.com\/vi\/wp-json\/wp\/v2\/knowledge-base\/468687","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/proxycompass.com\/vi\/wp-json\/wp\/v2\/knowledge-base"}],"about":[{"href":"https:\/\/proxycompass.com\/vi\/wp-json\/wp\/v2\/types\/knowledge-base"}],"version-history":[{"count":6,"href":"https:\/\/proxycompass.com\/vi\/wp-json\/wp\/v2\/knowledge-base\/468687\/revisions"}],"predecessor-version":[{"id":470672,"href":"https:\/\/proxycompass.com\/vi\/wp-json\/wp\/v2\/knowledge-base\/468687\/revisions\/470672"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/proxycompass.com\/vi\/wp-json\/wp\/v2\/media\/469570"}],"wp:attachment":[{"href":"https:\/\/proxycompass.com\/vi\/wp-json\/wp\/v2\/media?parent=468687"}],"wp:term":[{"taxonomy":"kb-categories","embeddable":true,"href":"https:\/\/proxycompass.com\/vi\/wp-json\/wp\/v2\/kb-categories?post=468687"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}