{"id":872,"date":"2022-08-16T09:46:06","date_gmt":"2022-08-16T02:46:06","guid":{"rendered":"https:\/\/longvan.net\/cong-dong\/?p=872"},"modified":"2022-08-16T09:49:35","modified_gmt":"2022-08-16T02:49:35","slug":"huong-dan-xac-dinh-dia-chi-ip-public-va-ip-private","status":"publish","type":"post","link":"https:\/\/longvan.net\/cong-dong\/huong-dan-xac-dinh-dia-chi-ip-public-va-ip-private\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn x\u00e1c \u0111\u1ecbnh \u0111\u1ecba ch\u1ec9 IP public v\u00e0 IP private"},"content":{"rendered":"<h3 id=\"H%C6%B0%E1%BB%9Bngd%E1%BA%ABnx%C3%A1c%C4%91%E1%BB%8BnhPublicIPv%C3%A0PrivateIP-PublicIPl%C3%A0g%C3%AC%3F\">I. Public IP l\u00e0 g\u00ec ?<\/h3>\n<p><strong>Public IP<\/strong> l\u00e0 \u0111\u1ecba ch\u1ec9 IP \u0111\u01b0\u1ee3c cung c\u1ea5p b\u1edfi <strong>ISP<\/strong> (<em>Internet Service Provider<\/em>) khi b\u1ea1n k\u1ebft n\u1ed1i v\u00e0o Internet, n\u00f3 l\u00e0 \u0111\u1ecba ch\u1ec9 d\u00f9ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh m\u00e1y t\u00ednh c\u1ee7a b\u1ea1n tr\u00ean <strong>Internet<\/strong> v\u00e0 \u0111\u1ecba ch\u1ec9 n\u00e0y l\u00e0 <strong>duy nh\u1ea5t<\/strong>, c\u00f3 ngh\u0129a l\u00e0 s\u1ebd kh\u00f4ng th\u1ec3 c\u00f3 2 m\u00e1y t\u00ednh c\u00f3 c\u00f9ng 1 \u0111\u1ecba ch\u1ec9 IP tr\u00ean Internet.<\/p>\n<p>Public IP c\u00f3 th\u1ec3 chia th\u00e0nh 2 lo\u1ea1i l\u00e0 <strong>\u0111\u1ecba ch\u1ec9 t\u0129nh<\/strong> (<em>Static IP<\/em>) v\u00e0 <strong>\u0111\u1ecba ch\u1ec9 \u0111\u1ed9ng<\/strong> (<em>Dynamic IP<\/em>). \u0110\u1ecba ch\u1ec9 t\u0129nh l\u00e0 m\u1ed9t \u0111\u1ecba ch\u1ec9 kh\u00f4ng thay \u0111\u1ed5i k\u1ec3 c\u1ea3 khi b\u1ea1n ng\u1eaft k\u1ebft n\u1ed1i v\u00e0 k\u1ebft n\u1ed1i l\u1ea1i v\u00e0o Internet, n\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng cho c\u00e1c d\u1ecbch v\u1ee5 tr\u00ean Internet nh\u01b0 Hosting.<\/p>\n<p>M\u1eb7t kh\u00e1c, \u0111\u1ecba ch\u1ec9 \u0111\u1ed9ng l\u00e0 m\u1ed9t \u0111\u1ecba ch\u1ec9 lu\u00f4n thay \u0111\u1ed5i theo m\u1ed7i l\u1ea7n b\u1ea1n ng\u1eaft k\u1ebft n\u1ed1i v\u00e0 k\u1ebft n\u1ed1i l\u1ea1i v\u00e0o Internet. Th\u01b0\u1eddng th\u00ec t\u1ea5t c\u1ea3 ng\u01b0\u1eddi d\u00f9ng Internet \u0111\u1ec1u c\u00f3 m\u1ed9t \u0111\u1ecba ch\u1ec9 \u0111\u1ed9ng do ISP c\u1ea5p d\u00f9ng \u0111\u1ec3 k\u1ebft n\u1ed1i v\u00e0o Internet, v\u00e0 khi ng\u1eaft k\u1ebft n\u1ed1i kh\u1ecfi Internet \u0111\u1ecba ch\u1ec9 n\u00e0y s\u1ebd ti\u1ebfp t\u1ee5c \u0111\u01b0\u1ee3c g\u00e1n cho m\u1ed9t m\u00e1y t\u00ednh kh\u00e1c tr\u00ean m\u1ea1ng, v\u00e0 khi k\u1ebft n\u1ed1i l\u1ea1i v\u00e0o m\u1ea1ng th\u00ec b\u1ea1n s\u1ebd \u0111\u01b0\u1ee3c cung c\u1ea5p l\u1ea1i m\u1ed9t \u0111\u1ecba ch\u1ec9 IP m\u1edbi.<\/p>\n<ol>\n<li id=\"H%C6%B0%E1%BB%9Bngd%E1%BA%ABnx%C3%A1c%C4%91%E1%BB%8BnhPublicIPv%C3%A0PrivateIP-L%C3%A0mth%E1%BA%BFn%C3%A0o%C4%91%E1%BB%83x%C3%A1c%C4%91%E1%BB%8Bnh%C4%91%C6%B0%E1%BB%A3cPublicIPc%E1%BB%A7ab%E1%BA%A1n%3F\">\n<h4><strong>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c Public IP c\u1ee7a b\u1ea1n ?<\/strong><\/h4>\n<br \/>\n<p>\u0110\u1ec3 x\u00e1c \u0111\u1ecbnh Public IP c\u1ee7a m\u00e1y t\u00ednh, b\u1ea1n ch\u1ec9 c\u1ea7n truy c\u1eadp v\u00e0o m\u1ed9t trong c\u00e1c website sau:<\/p>\n<blockquote>\n<p><a class=\"external-link\" href=\"http:\/\/whatismyipaddress.com\/\" rel=\"nofollow\">WhatIsMyIPAddress.com<\/a><br \/><a class=\"external-link\" href=\"http:\/\/canyouseeme.org\/\" rel=\"nofollow\">CanYouSeeMe.org<\/a><br \/><a class=\"external-link\" href=\"http:\/\/ping.eu\/\" rel=\"nofollow\">ping.eu<\/a><\/p>\n<\/blockquote>\n<p>Nh\u1eefng websites n\u00e0y s\u1ebd cung c\u1ea5p cho b\u1ea1n nh\u1eefng th\u00f4ng tin nh\u01b0 \u0111\u1ecba ch\u1ec9 Public IP c\u1ee7a b\u1ea1n, ISP, Th\u00e0nh ph\u1ed1 c\u0169ng nh\u01b0 Qu\u1ed1c gia b\u1ea1n \u0111ang sinh s\u1ed1ng (Nh\u1eefng th\u00f4ng tin n\u00e0y ch\u1ec9 mang t\u00ednh ch\u1ea5t tham kh\u1ea3o).<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-874 aligncenter\" src=\"https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2022\/08\/check_ip_publicimage2016-3-24-0-9-11.png\" alt=\"\" width=\"400\" height=\"507\" srcset=\"https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2022\/08\/check_ip_publicimage2016-3-24-0-9-11.png 400w, https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2022\/08\/check_ip_publicimage2016-3-24-0-9-11-237x300.png 237w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/p>\nNgo\u00e0i ra, n\u1ebfu server ho\u1eb7c m\u00e1y t\u00ednh c\u1ee7a b\u1ea1n s\u1eed d\u1ee5ng h\u1ec7 \u0111i\u1ec1u h\u00e0nh linux, c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c l\u1ec7nh sau \u0111\u1ec3 ki\u1ec3m tra IP public:\n<ul>\n<li>\n<p>curl ifconfig.me<\/p>\n<\/li>\n<li>\n<p>curl api.ipify.org<\/p>\n<\/li>\n<li>\n<p>curl ident.me<\/p>\n<\/li>\n<li>\n<p>curl checkip.dyndns.org<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<h4 id=\"H%C6%B0%E1%BB%9Bngd%E1%BA%ABnx%C3%A1c%C4%91%E1%BB%8BnhPublicIPv%C3%A0PrivateIP-T%E1%BA%A1isaoc%E1%BA%A7nx%C3%A1c%C4%91%E1%BB%8Bnh%C4%91%E1%BB%8Bach%E1%BB%89PublicIP%3F\"><strong>T\u1ea1i sao c\u1ea7n x\u00e1c \u0111\u1ecbnh \u0111\u1ecba ch\u1ec9 Public IP ?<\/strong><\/h4>\n<ul>\n<li>\u0110\u1ec3 bi\u1ebft \u0111\u01b0\u1ee3c b\u1ea1n \u0111ang s\u1eed d\u1ee5ng IP n\u00e0o \u0111\u1ec3 \u0111i ra internet.<\/li>\n<li>H\u1ed7 tr\u1ee3 vi\u1ec7c ki\u1ec3m tra x\u00e1c \u0111\u1ecbnh nguy\u00ean nh\u00e2n c\u00e1c v\u1ea5n \u0111\u1ec1 li\u00ean quan \u0111\u1ebfn network, \u0111\u01b0\u1eddng \u0111i c\u1ee7a g\u00f3i tin.<\/li>\n<li>X\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c IP public, b\u1ea1n c\u00f3 th\u1ec3 t\u1ea1o c\u00e1c rule allow IP public c\u1ee7a m\u00ecnh, ho\u1eb7c g\u1ee1 IP public \u0111ang s\u1eed d\u1ee5ng ra kh\u1ecfi blacklist c\u1ee7a firewall.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<div class=\"columnLayout single\" data-layout=\"single\">\n<div class=\"cell normal\" data-type=\"normal\">\n<div class=\"innerCell\">\n<h2 id=\"H%C6%B0%E1%BB%9Bngd%E1%BA%ABnx%C3%A1c%C4%91%E1%BB%8BnhPublicIPv%C3%A0PrivateIP-PrivateIPl%C3%A0g%C3%AC%3F\">II. Private IP l\u00e0 g\u00ec ?<\/h2>\n<p>Kh\u00e1c v\u1edbi Public IP l\u00e0 \u0111\u1ecba ch\u1ec9 d\u00f9ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh m\u00e1y t\u00ednh c\u1ee7a b\u1ea1n tr\u00ean Internet th\u00ec <strong>Private IP<\/strong> l\u00e0 \u0111\u1ecba chi d\u00f9ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh m\u00e1y t\u00ednh c\u1ee7a b\u1ea1n tr\u00ean m\u1ed9t m\u1ea1ng ri\u00eang n\u00e0o \u0111\u00f3, nh\u01b0 m\u1ea1ng n\u1ed9i b\u1ed9 c\u1ee7a c\u00e1c c\u00f4ng ty, tr\u01b0\u1eddng h\u1ecdc &#8230;. C\u00e1c \u0111\u1ecba ch\u1ec9 Public IP \u0111\u01b0\u1ee3c cung c\u1ea5p b\u1edfi ISP, c\u00f2n Private IP th\u00ec s\u1ebd \u0111\u01b0\u1ee3c ng\u01b0\u1eddi \u0111i\u1ec1u h\u00e0nh g\u00e1n cho m\u1ed7i m\u00e1y t\u00ednh trong m\u1ea1ng ri\u00eang c\u1ee7a m\u00ecnh, ng\u01b0\u1eddi \u0111i\u1ec1u h\u00e0nh n\u00e0y \u0111\u01b0\u1ee3c quy\u1ec1n g\u00e1n b\u1ea5t k\u1ef3 \u0111\u1ecba ch\u1ec9 IP n\u00e0o tu\u1ef3 th\u00edch mi\u1ec5n l\u00e0 n\u1eb1m trong d\u00e3y IP \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh s\u1eb5n cho <strong>m\u1ea1ng ri\u00eang<\/strong> (<em>Private Network<\/em>) b\u1edfi t\u1ed5 ch\u1ee9c <strong>IANA<\/strong> (<em>Internet Assigned Numbers Authority<\/em>).<\/p>\n<p>C\u00e1c \u0111\u1ecba ch\u1ec9 IP \u0111\u00f3 ph\u1ea3i n\u1eb1m trong d\u00e3y IP sau:<\/p>\n<blockquote>\n<p><em>10.0.0.0 \u2013 10.255.255.255 (C\u00f3 t\u1ed5ng c\u1ed9ng 16,777,216 \u0111\u1ecba ch\u1ec9) <\/em><\/p>\n<p><em>172.16.0.0 \u2013 172.31.255.255 (C\u00f3 t\u1ed5ng c\u1ed9ng 1,048,576 \u0111\u1ecba ch\u1ec9) <\/em><\/p>\n<p><em>192.168.0.0 \u2013 192.168.255.255 (C\u00f3 t\u1ed5ng c\u1ed9ng 65,536 \u0111\u1ecba ch\u1ec9)<\/em><\/p>\n<\/blockquote>\n<p>Gi\u1ea3 s\u1eed nh\u01b0 c\u00f3 m\u1ed9t m\u1ea1ng ri\u00eang c\u1ee7a c\u00f4ng ty X, trong m\u1ea1ng \u0111\u00f3 bao g\u1ed3m 100 m\u00e1y t\u00ednh, m\u1ed7i m\u00e1y t\u00ednh c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c g\u00e1n cho \u0111\u1ecba ch\u1ec9 IP b\u1eaft \u0111\u1ea7u t\u1eeb 192.168.1.1 cho t\u1edbi 192.168.1.100. Ng\u01b0\u1eddi \u0111i\u1ec1u h\u00e0nh c\u00f3 th\u1ec3 g\u00e1n b\u1ea5t k\u1ef3 \u0111\u1ecba ch\u1ec9 IP n\u00e0o cho c\u00e1c m\u00e1y t\u00ednh trong m\u1ea1ng ri\u00eang n\u00e0y mi\u1ec5n l\u00e0 n\u1eb1m trong d\u00e3y IP nh\u01b0 tr\u00ean.<\/p>\n<p>Nh\u1eefng m\u00e1y t\u00ednh n\u1eb1m trong m\u1ea1ng ri\u00eang khi mu\u1ed1n k\u1ebft n\u1ed1i ra ngo\u00e0i Internet, th\u00ec c\u0169ng s\u1ebd \u0111\u01b0\u1ee3c g\u00e1n th\u00eam m\u1ed9t Public IP, c\u00f3 ngh\u0129a l\u00e0 m\u00e1y t\u00ednh n\u00e0y s\u1ebd bao g\u1ed3m Private IP d\u00f9ng \u0111\u1ec3 k\u1ebft n\u1ed1i qua l\u1ea1i v\u1edbi nhau trong m\u1ea1ng ri\u00eang v\u00e0 Public IP (\u0111\u01b0\u1ee3c c\u1ea5p b\u1edfi ISP) d\u00f9ng \u0111\u1ec3 k\u1ebft n\u1ed1i ra ngo\u00e0i Internet.<\/p>\n<p>Nh\u1eefng ng\u01b0\u1eddi d\u00f9ng Internet s\u1eed d\u1ee5ng k\u1ebft n\u1ed1i DSL\/ADSL c\u0169ng s\u1ebd c\u00f3 2 \u0111\u1ecba ch\u1ec9 IP l\u00e0 Public IP v\u00e0 Private IP.<\/p>\n<h4 id=\"H%C6%B0%E1%BB%9Bngd%E1%BA%ABnx%C3%A1c%C4%91%E1%BB%8BnhPublicIPv%C3%A0PrivateIP-L%C3%A0mth%E1%BA%BFn%C3%A0o%C4%91%E1%BB%83x%C3%A1c%C4%91%E1%BB%8BnhPrivateIPc%E1%BB%A7ab%E1%BA%A1n%3F\">L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh Private IP c\u1ee7a b\u1ea1n ?<\/h4>\n<p>Tr\u00ean h\u1ec7 \u0111i\u1ec1u h\u00e0nh Windows, \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh Private IP c\u1ee7a m\u00e1y t\u00ednh, b\u1ea1n ch\u1ec9 c\u1ea7n v\u00e0o <strong>Start \u27a8 Run \u27a8 cmd \u27a8<\/strong> g\u00f5 <strong>ipconfig<\/strong> v\u00e0o v\u00e0 nh\u1ea5n enter.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-875 aligncenter\" src=\"https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2022\/08\/check_ip_private_image2016-3-24-0-9-11.png\" alt=\"\" width=\"511\" height=\"111\" srcset=\"https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2022\/08\/check_ip_private_image2016-3-24-0-9-11.png 511w, https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2022\/08\/check_ip_private_image2016-3-24-0-9-11-300x65.png 300w\" sizes=\"auto, (max-width: 511px) 100vw, 511px\" \/><\/p>\n<p>B\u1ea1n s\u1ebd th\u1ea5y \u0111\u01b0\u1ee3c Private IP c\u1ee7a m\u00ecnh \u1edf d\u00f2ng <strong>IPv4 Address<\/strong>, th\u01b0\u1eddng th\u00ec n\u00f3 n\u1eb1m trong d\u00e3y IP 192.168.x.x<\/p>\n<p>V\u1edbi h\u1ec7 \u0111i\u1ec1u h\u00e0nh Linux, b\u1ea1n ch\u1ec9 c\u1ea7n d\u00f9ng m\u1ed9t trong c\u00e1c l\u1ec7nh sau \u0111\u1ec3 hi\u1ec3n th\u1ecb \u0111\u1ecba ch\u1ec9 IP:<\/p>\n<ul>\n<li>\n<p>ip a<\/p>\n<\/li>\n<li>\n<p>ifconfig<\/p>\n<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<p>\u00a0<\/p>\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>I. Public IP l\u00e0 g\u00ec ? Public IP l\u00e0 \u0111\u1ecba ch\u1ec9 IP \u0111\u01b0\u1ee3c cung c\u1ea5p b\u1edfi ISP (Internet Service Provider) khi b\u1ea1n k\u1ebft n\u1ed1i v\u00e0o Internet, n\u00f3 l\u00e0 \u0111\u1ecba ch\u1ec9 d\u00f9ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh m\u00e1y t\u00ednh c\u1ee7a b\u1ea1n tr\u00ean Internet v\u00e0 \u0111\u1ecba ch\u1ec9 n\u00e0y l\u00e0 duy nh\u1ea5t, c\u00f3 ngh\u0129a l\u00e0 s\u1ebd kh\u00f4ng th\u1ec3 c\u00f3 2 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_oasis_is_in_workflow":0,"_oasis_original":0,"footnotes":""},"categories":[4,15],"tags":[80,78,77,79],"class_list":["post-872","post","type-post","status-publish","format-standard","hentry","category-linux","category-windows","tag-ip-address","tag-ip-private","tag-ip-public","tag-show-ip"],"_links":{"self":[{"href":"https:\/\/longvan.net\/cong-dong\/wp-json\/wp\/v2\/posts\/872","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/longvan.net\/cong-dong\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/longvan.net\/cong-dong\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/longvan.net\/cong-dong\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/longvan.net\/cong-dong\/wp-json\/wp\/v2\/comments?post=872"}],"version-history":[{"count":4,"href":"https:\/\/longvan.net\/cong-dong\/wp-json\/wp\/v2\/posts\/872\/revisions"}],"predecessor-version":[{"id":5618,"href":"https:\/\/longvan.net\/cong-dong\/wp-json\/wp\/v2\/posts\/872\/revisions\/5618"}],"wp:attachment":[{"href":"https:\/\/longvan.net\/cong-dong\/wp-json\/wp\/v2\/media?parent=872"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/longvan.net\/cong-dong\/wp-json\/wp\/v2\/categories?post=872"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/longvan.net\/cong-dong\/wp-json\/wp\/v2\/tags?post=872"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}