{"id":15823,"date":"2025-09-05T17:32:09","date_gmt":"2025-09-05T10:32:09","guid":{"rendered":"https:\/\/interdata.vn\/blog\/?p=15823"},"modified":"2025-09-15T14:57:49","modified_gmt":"2025-09-15T07:57:49","slug":"ip-public-la-gi","status":"publish","type":"post","link":"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/","title":{"rendered":"IP Public l\u00e0 g\u00ec? Ph\u00e2n bi\u1ec7t vs IP Private &#038; C\u00e1ch check IP Public"},"content":{"rendered":"<p>Khi l\u01b0\u1edbt web, ch\u01a1i game, hay xem phim tr\u1ef1c tuy\u1ebfn, b\u1ea1n c\u00f3 bao gi\u1edd t\u1ef1 h\u1ecfi l\u00e0m th\u1ebf n\u00e0o c\u00e1c thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 k\u1ebft n\u1ed1i v\u1edbi th\u1ebf gi\u1edbi Internet r\u1ed9ng l\u1edbn? C\u00e2u tr\u1ea3 l\u1eddi n\u1eb1m \u1edf m\u1ed9t kh\u00e1i ni\u1ec7m \u0111\u01a1n gi\u1ea3n nh\u01b0ng v\u00f4 c\u00f9ng quan tr\u1ecdng: IP Public. B\u00e0i vi\u1ebft n\u00e0y c\u1ee7a InterData s\u1ebd gi\u00fap b\u1ea1n hi\u1ec3u r\u00f5 v\u1ec1 <strong><a href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/\">IP Public l\u00e0 g\u00ec<\/a><\/strong>, c\u00e1ch ph\u00e2n bi\u1ec7t v\u1edbi lo\u1ea1i <a href=\"https:\/\/interdata.vn\/blog\/ip-private-la-gi\/\">IP Private<\/a>, c\u0169ng nh\u01b0 t\u00ecm hi\u1ec3u c\u00e1ch check IP Public \u0111\u01a1n gi\u1ea3n nh\u1ea5t.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-white ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">N\u1ed8I DUNG<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#IP-Public-la-gi\" >IP Public l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#Cac-loai-IP-Public-pho-bien\" >C\u00e1c lo\u1ea1i IP Public ph\u1ed5 bi\u1ebfn<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#IP-Public-Tinh-Static-IP-Public\" >IP Public T\u0129nh (Static IP Public)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#IP-Public-Dong-Dynamic-IP-Public\" >IP Public \u0110\u1ed9ng (Dynamic IP Public)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#IPv4-va-IPv6\" >IPv4 v\u00e0 IPv6<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#Vai-tro-cua-IP-Public-trong-doi-song-va-cong-viec\" >Vai tr\u00f2 c\u1ee7a IP Public trong \u0111\u1eddi s\u1ed1ng v\u00e0 c\u00f4ng vi\u1ec7c<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#Kha-nang-truy-cap-toan-cau\" >Kh\u1ea3 n\u0103ng truy c\u1eadp to\u00e0n c\u1ea7u<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#Ho-tro-dich-vu-may-chu-va-hosting\" >H\u1ed7 tr\u1ee3 d\u1ecbch v\u1ee5 m\u00e1y ch\u1ee7 v\u00e0 hosting<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#Ket-noi-tu-xa-an-toan-va-hieu-qua\" >K\u1ebft n\u1ed1i t\u1eeb xa an to\u00e0n v\u00e0 hi\u1ec7u qu\u1ea3<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#Tang-cuong-kha-nang-giao-tiep-mang\" >T\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng giao ti\u1ebfp m\u1ea1ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#Kiem-soat-va-quan-ly-tot-hon\" >Ki\u1ec3m so\u00e1t v\u00e0 qu\u1ea3n l\u00fd t\u1ed1t h\u01a1n<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#Pham-vi-su-dung-dia-chi-IP-Public\" >Ph\u1ea1m vi s\u1eed d\u1ee5ng \u0111\u1ecba ch\u1ec9 IP Public<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#Doanh-nghiep-va-to-chuc\" >Doanh nghi\u1ec7p v\u00e0 t\u1ed5 ch\u1ee9c<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#Truong-hoc-va-co-quan-chinh-phu\" >Tr\u01b0\u1eddng h\u1ecdc v\u00e0 c\u01a1 quan ch\u00ednh ph\u1ee7<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#Han-che-khi-su-dung-IP-Public\" >H\u1ea1n ch\u1ebf khi s\u1eed d\u1ee5ng IP Public<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#Van-de-bao-mat\" >V\u1ea5n \u0111\u1ec1 b\u1ea3o m\u1eadt<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#Kho-khan-trong-quan-ly-doi-voi-IP-dong\" >Kh\u00f3 kh\u0103n trong qu\u1ea3n l\u00fd (\u0111\u1ed1i v\u1edbi IP \u0111\u1ed9ng)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#Chi-phi\" >Chi ph\u00ed<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#Gioi-han-tai-nguyen\" >Gi\u1edbi h\u1ea1n t\u00e0i nguy\u00ean<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#Phan-biet-IP-Public-va-IP-Private\" >Ph\u00e2n bi\u1ec7t IP Public v\u00e0 IP Private<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#Ly-do-vi-sao-dia-chi-IP-Public-lai-thay-doi\" >L\u00fd do v\u00ec sao \u0111\u1ecba ch\u1ec9 IP Public l\u1ea1i thay \u0111\u1ed5i?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#Doi-voi-nguoi-dung\" >\u0110\u1ed1i v\u1edbi ng\u01b0\u1eddi d\u00f9ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#Doi-voi-nguoi-cung-cap-dich-vu\" >\u0110\u1ed1i v\u1edbi ng\u01b0\u1eddi cung c\u1ea5p d\u1ecbch v\u1ee5<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#Ung-dung-thuc-te-cua-IP-Public\" >\u1ee8ng d\u1ee5ng th\u1ef1c t\u1ebf c\u1ee7a IP Public<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#Truy-cap-va-quan-ly-VPSCloud-Server\" >Truy c\u1eadp v\u00e0 qu\u1ea3n l\u00fd VPS\/Cloud Server<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#Trien-khai-websiteung-dung-truc-tuyen\" >Tri\u1ec3n khai website\/\u1ee9ng d\u1ee5ng tr\u1ef1c tuy\u1ebfn<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-27\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#Ket-noi-camera-IP-Remote-Desktop\" >K\u1ebft n\u1ed1i camera IP, Remote Desktop<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-28\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#Su-dung-trong-VPN-bao-mat-truy-cap-tu-xa\" >S\u1eed d\u1ee5ng trong VPN, b\u1ea3o m\u1eadt truy c\u1eadp t\u1eeb xa<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-29\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#Khi-nao-can-dung-IP-Public-tinh\" >Khi n\u00e0o c\u1ea7n d\u00f9ng IP Public t\u0129nh?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-30\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#Cach-kiem-tra-IP-Public-chinh-xac-nhat\" >C\u00e1ch ki\u1ec3m tra IP Public ch\u00ednh x\u00e1c nh\u1ea5t<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-31\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#Kiem-tra-IP-Public-bang-cac-trang-web-truc-tuyen\" >Ki\u1ec3m tra IP Public b\u1eb1ng c\u00e1c trang web tr\u1ef1c tuy\u1ebfn<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-32\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#Check-dia-chi-IP-Public-tren-Windows-bang-Command-Prompt\" >Check \u0111\u1ecba ch\u1ec9 IP Public tr\u00ean Windows b\u1eb1ng Command Prompt<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-33\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#Check-dia-chi-IP-Public-tren-MacOS-hoac-Linux-bang-Terminal\" >Check \u0111\u1ecba ch\u1ec9 IP Public tr\u00ean MacOS ho\u1eb7c Linux b\u1eb1ng Terminal<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-34\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#Cach-bao-mat-IP-Public-an-toan\" >C\u00e1ch b\u1ea3o m\u1eadt IP Public an to\u00e0n<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-35\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#Su-dung-Firewall-Tuong-lua\" >S\u1eed d\u1ee5ng Firewall (T\u01b0\u1eddng l\u1eeda)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-36\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#Cap-nhat-firmware-router\" >C\u1eadp nh\u1eadt firmware router<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-37\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#Mat-khau-manh\" >M\u1eadt kh\u1ea9u m\u1ea1nh<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-38\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#VPN-Virtual-Private-Network\" >VPN (Virtual Private Network)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-39\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#Hieu-ro-ve-Port-Forwarding\" >Hi\u1ec3u r\u00f5 v\u1ec1 Port Forwarding<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-40\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#Cau-hoi-thuong-gap-ve-IP-Public-FAQs\" >C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 IP Public (FAQs)<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-41\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#IP-Public-co-thay-doi-khong\" >IP Public c\u00f3 thay \u0111\u1ed5i kh\u00f4ng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-42\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#IP-Public-co-the-bi-lo-va-gay-nguy-hiem-khong\" >IP Public c\u00f3 th\u1ec3 b\u1ecb l\u1ed9 v\u00e0 g\u00e2y nguy hi\u1ec3m kh\u00f4ng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-43\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#IP-Public-co-phai-la-duy-nhat-tren-toan-cau-khong\" >IP Public c\u00f3 ph\u1ea3i l\u00e0 duy nh\u1ea5t tr\u00ean to\u00e0n c\u1ea7u kh\u00f4ng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-44\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#Neu-toi-khong-co-IP-Public-toi-co-the-truy-cap-Internet-khong\" >N\u1ebfu t\u00f4i kh\u00f4ng c\u00f3 IP Public, t\u00f4i c\u00f3 th\u1ec3 truy c\u1eadp Internet kh\u00f4ng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-45\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#Toi-co-the-an-IP-Public-cua-minh-khong\" >T\u00f4i c\u00f3 th\u1ec3 \u1ea9n IP Public c\u1ee7a m\u00ecnh kh\u00f4ng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-46\" href=\"https:\/\/interdata.vn\/blog\/ip-public-la-gi\/#ISP-nha-cung-cap-dich-vu-Internet-co-cap-IP-Public-cho-moi-thue-bao-khong\" >ISP (nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 Internet) c\u00f3 c\u1ea5p IP Public cho m\u1ecdi thu\u00ea bao kh\u00f4ng?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"IP-Public-la-gi\"><\/span>IP Public l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>IP Public (hay c\u00f2n g\u1ecdi l\u00e0 <a href=\"https:\/\/interdata.vn\/blog\/dia-chi-ip-la-gi\/\">\u0111\u1ecba ch\u1ec9 IP<\/a> c\u00f4ng c\u1ed9ng) l\u00e0 m\u1ed9t \u0111\u1ecba ch\u1ec9 IP duy nh\u1ea5t \u0111\u01b0\u1ee3c g\u00e1n cho thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n khi k\u1ebft n\u1ed1i tr\u1ef1c ti\u1ebfp v\u1edbi Internet. N\u00f3 gi\u1ed1ng nh\u01b0 \u0111\u1ecba ch\u1ec9 nh\u00e0 c\u1ee7a b\u1ea1n tr\u00ean b\u1ea3n \u0111\u1ed3 th\u1ebf gi\u1edbi, gi\u00fap c\u00e1c thi\u1ebft b\u1ecb kh\u00e1c tr\u00ean Internet \u0111\u1ecbnh v\u1ecb v\u00e0 li\u00ean l\u1ea1c v\u1edbi b\u1ea1n. Khi b\u1ea1n truy c\u1eadp m\u1ed9t <a href=\"https:\/\/interdata.vn\/blog\/page-la-gi\/\">trang web<\/a>, <a href=\"https:\/\/interdata.vn\/blog\/may-chu-server-la-gi\/\">m\u00e1y ch\u1ee7<\/a> c\u1ee7a trang web \u0111\u00f3 s\u1ebd g\u1eedi th\u00f4ng tin v\u1ec1 l\u1ea1i ch\u00ednh x\u00e1c \u0111\u1ecba ch\u1ec9 IP Public c\u1ee7a b\u1ea1n.<\/p>\n<p>M\u1ed7i IP Public l\u00e0 duy nh\u1ea5t tr\u00ean to\u00e0n c\u1ea7u t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m nh\u1ea5t \u0111\u1ecbnh. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng d\u1eef li\u1ec7u lu\u00f4n \u0111\u01b0\u1ee3c g\u1eedi \u0111\u1ebfn \u0111\u00fang \u0111\u00edch, kh\u00f4ng g\u00e2y nh\u1ea7m l\u1eabn tr\u00ean <a href=\"https:\/\/interdata.vn\/blog\/mang-internet\/\">m\u1ea1ng Internet<\/a>.<\/p>\n<figure id=\"attachment_15828\" aria-describedby=\"caption-attachment-15828\" style=\"width: 1020px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-15828 size-large\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/08\/IP-Public-la-gi-1024x465.png\" alt=\"IP Public l\u00e0 g\u00ec?\" width=\"1020\" height=\"463\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/08\/IP-Public-la-gi-1024x465.png 1024w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/08\/IP-Public-la-gi-300x136.png 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/08\/IP-Public-la-gi-768x349.png 768w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/08\/IP-Public-la-gi-750x341.png 750w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/08\/IP-Public-la-gi-1140x518.png 1140w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/08\/IP-Public-la-gi.png 1320w\" sizes=\"auto, (max-width: 1020px) 100vw, 1020px\" \/><figcaption id=\"caption-attachment-15828\" class=\"wp-caption-text\">IP Public l\u00e0 g\u00ec?<\/figcaption><\/figure>\n<p>\u0110\u1ecba ch\u1ec9 IP Public \u0111\u01b0\u1ee3c c\u1ea5p ph\u00e1t b\u1edfi t\u1ed5 ch\u1ee9c qu\u1ea3n l\u00fd IP to\u00e0n c\u1ea7u nh\u01b0: <a href=\"https:\/\/vi.wikipedia.org\/wiki\/T%E1%BB%95_ch%E1%BB%A9c_c%E1%BA%A5p_ph%C3%A1t_s%E1%BB%91_hi%E1%BB%87u_Internet\" target=\"_blank\" rel=\"noopener\">t\u1ed5 ch\u1ee9c qu\u1ea3n l\u00fd IP to\u00e0n c\u1ea7u IANA<\/a> (Internet Assigned Numbers Authority) v\u00e0 \u0111\u01b0\u1ee3c c\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 Internet (ISP) ph\u00e2n ph\u1ed1i cho ng\u01b0\u1eddi d\u00f9ng cu\u1ed1i.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cac-loai-IP-Public-pho-bien\"><\/span>C\u00e1c lo\u1ea1i IP Public ph\u1ed5 bi\u1ebfn<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>IP Public<\/strong> kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng gi\u1ed1ng nhau. Ch\u00fang ta c\u00f3 hai lo\u1ea1i ch\u00ednh: <strong>IP Public t\u0129nh<\/strong> v\u00e0 <strong>IP Public \u0111\u1ed9ng<\/strong>.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"IP-Public-Tinh-Static-IP-Public\"><\/span>IP Public T\u0129nh (Static IP Public)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>IP Public t\u0129nh<\/strong> l\u00e0 \u0111\u1ecba ch\u1ec9 IP kh\u00f4ng thay \u0111\u1ed5i theo th\u1eddi gian, d\u00f9 b\u1ea1n c\u00f3 kh\u1edfi \u0111\u1ed9ng l\u1ea1i <a href=\"https:\/\/interdata.vn\/blog\/router-la-gi\/\">router<\/a> hay kh\u00f4ng. M\u1ed9t khi b\u1ea1n \u0111\u01b0\u1ee3c c\u1ea5p <strong>IP Public t\u0129nh<\/strong>, \u0111\u1ecba ch\u1ec9 \u0111\u00f3 s\u1ebd \u0111\u01b0\u1ee3c gi\u1eef nguy\u00ean.<\/p>\n<ul>\n<li><strong>\u01afu \u0111i\u1ec3m:<\/strong> \u0110\u1ed9 \u1ed5n \u0111\u1ecbnh cao, d\u1ec5 d\u00e0ng c\u1ea5u h\u00ecnh cho c\u00e1c d\u1ecbch v\u1ee5 c\u1ea7n \u0111\u1ecba ch\u1ec9 c\u1ed1 \u0111\u1ecbnh (v\u00ed d\u1ee5: <a href=\"https:\/\/interdata.vn\/blog\/web-server\/\">m\u00e1y ch\u1ee7 web<\/a>, VPN). Vi\u1ec7c truy c\u1eadp t\u1eeb xa c\u0169ng thu\u1eadn ti\u1ec7n h\u01a1n r\u1ea5t nhi\u1ec1u.<\/li>\n<li><strong>Nh\u01b0\u1ee3c \u0111i\u1ec3m:<\/strong> Th\u01b0\u1eddng c\u00f3 chi ph\u00ed cao h\u01a1n <strong>IP Public \u0111\u1ed9ng<\/strong> v\u00e0 ti\u1ec1m \u1ea9n r\u1ee7i ro b\u1ea3o m\u1eadt h\u01a1n n\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 \u0111\u00fang c\u00e1ch, v\u00ec \u0111\u1ecba ch\u1ec9 n\u00e0y lu\u00f4n c\u00f4ng khai v\u00e0 c\u1ed1 \u0111\u1ecbnh.<\/li>\n<li><strong>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng:<\/strong> C\u00e1c doanh nghi\u1ec7p, t\u1ed5 ch\u1ee9c c\u1ea7n duy tr\u00ec m\u00e1y ch\u1ee7, <a href=\"https:\/\/interdata.vn\/blog\/website-la-gi\/\">website<\/a>, d\u1ecbch v\u1ee5 VPN, h\u1ec7 th\u1ed1ng camera gi\u00e1m s\u00e1t t\u1eeb xa.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"IP-Public-Dong-Dynamic-IP-Public\"><\/span>IP Public \u0110\u1ed9ng (Dynamic IP Public)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>IP Public \u0111\u1ed9ng<\/strong> l\u00e0 lo\u1ea1i \u0111\u1ecba ch\u1ec9 IP ph\u1ed5 bi\u1ebfn nh\u1ea5t cho ng\u01b0\u1eddi d\u00f9ng c\u00e1 nh\u00e2n v\u00e0 h\u1ed9 gia \u0111\u00ecnh. \u0110\u1ecba ch\u1ec9 n\u00e0y s\u1ebd thay \u0111\u1ed5i \u0111\u1ecbnh k\u1ef3 (v\u00ed d\u1ee5: sau m\u1ed7i l\u1ea7n kh\u1edfi \u0111\u1ed9ng l\u1ea1i router, ho\u1eb7c sau m\u1ed9t kho\u1ea3ng th\u1eddi gian nh\u1ea5t \u0111\u1ecbnh do nh\u00e0 m\u1ea1ng quy \u0111\u1ecbnh).<\/p>\n<ul>\n<li><strong>\u01afu \u0111i\u1ec3m:<\/strong> Mi\u1ec5n ph\u00ed ho\u1eb7c chi ph\u00ed th\u1ea5p, gi\u00fap b\u1ea3o m\u1eadt ph\u1ea7n n\u00e0o (kh\u00f3 b\u1ecb nh\u1eafm m\u1ee5c ti\u00eau t\u1ea5n c\u00f4ng li\u00ean t\u1ee5c v\u00e0o m\u1ed9t \u0111\u1ecba ch\u1ec9 c\u1ed1 \u0111\u1ecbnh), v\u00e0 d\u1ec5 d\u00e0ng cho nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 Internet (ISP) qu\u1ea3n l\u00fd t\u00e0i nguy\u00ean.<\/li>\n<li><strong>Nh\u01b0\u1ee3c \u0111i\u1ec3m:<\/strong> G\u00e2y kh\u00f3 kh\u0103n khi mu\u1ed1n thi\u1ebft l\u1eadp c\u00e1c d\u1ecbch v\u1ee5 c\u1ea7n truy c\u1eadp t\u1eeb xa (nh\u01b0 m\u00e1y ch\u1ee7 game, camera) v\u00ec \u0111\u1ecba ch\u1ec9 IP thay \u0111\u1ed5i li\u00ean t\u1ee5c. C\u1ea7n s\u1eed d\u1ee5ng c\u00e1c d\u1ecbch v\u1ee5 DDNS (Dynamic <a href=\"https:\/\/interdata.vn\/blog\/dns-la-gi\/\">DNS<\/a>) \u0111\u1ec3 kh\u1eafc ph\u1ee5c.<\/li>\n<li><strong>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng:<\/strong> H\u1ea7u h\u1ebft ng\u01b0\u1eddi d\u00f9ng c\u00e1 nh\u00e2n, c\u00e1c v\u0103n ph\u00f2ng nh\u1ecf kh\u00f4ng c\u00f3 nhu c\u1ea7u \u0111\u1eb7c bi\u1ec7t v\u1ec1 truy c\u1eadp t\u1eeb xa.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"IPv4-va-IPv6\"><\/span>IPv4 v\u00e0 IPv6<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Khi n\u00f3i v\u1ec1 <strong>IP Public<\/strong>, ch\u00fang ta c\u0169ng c\u1ea7n nh\u1eafc \u0111\u1ebfn hai phi\u00ean b\u1ea3n ch\u00ednh:<\/p>\n<ul>\n<li><strong><a href=\"https:\/\/interdata.vn\/blog\/ipv4-la-gi\/\">IPv4<\/a>:<\/strong> L\u00e0 phi\u00ean b\u1ea3n \u0111\u1ecba ch\u1ec9 IP ph\u1ed5 bi\u1ebfn nh\u1ea5t hi\u1ec7n nay, c\u00f3 d\u1ea1ng 4 nh\u00f3m s\u1ed1, m\u1ed7i nh\u00f3m t\u1eeb 0 \u0111\u1ebfn 255, c\u00e1ch nhau b\u1edfi d\u1ea5u ch\u1ea5m (v\u00ed d\u1ee5: 192.168.1.1). Tuy nhi\u00ean, s\u1ed1 l\u01b0\u1ee3ng \u0111\u1ecba ch\u1ec9 IPv4 \u0111ang c\u1ea1n ki\u1ec7t.<\/li>\n<li><strong><a href=\"https:\/\/interdata.vn\/blog\/ipv6-la-gi\/\">IPv6<\/a>:<\/strong> L\u00e0 phi\u00ean b\u1ea3n m\u1edbi h\u01a1n, \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n \u0111\u1ec3 kh\u1eafc ph\u1ee5c gi\u1edbi h\u1ea1n s\u1ed1 l\u01b0\u1ee3ng \u0111\u1ecba ch\u1ec9 c\u1ee7a IPv4. IPv6 c\u00f3 d\u1ea1ng d\u00e0i h\u01a1n, ph\u1ee9c t\u1ea1p h\u01a1n (v\u00ed d\u1ee5: 2001:0db8:85a3:0000:0000:8a2e:0370:7334) v\u00e0 cung c\u1ea5p s\u1ed1 l\u01b0\u1ee3ng \u0111\u1ecba ch\u1ec9 kh\u1ed5ng l\u1ed3, \u0111\u1ee7 cho m\u1ecdi thi\u1ebft b\u1ecb tr\u00ean th\u1ebf gi\u1edbi.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Vai-tro-cua-IP-Public-trong-doi-song-va-cong-viec\"><\/span>Vai tr\u00f2 c\u1ee7a IP Public trong \u0111\u1eddi s\u1ed1ng v\u00e0 c\u00f4ng vi\u1ec7c<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Public IP mang l\u1ea1i nhi\u1ec1u l\u1ee3i \u00edch thi\u1ebft th\u1ef1c, \u0111\u1eb7c bi\u1ec7t cho c\u00e1c c\u00e1 nh\u00e2n v\u00e0 doanh nghi\u1ec7p mu\u1ed1n t\u1ed1i \u01b0u h\u00f3a kh\u1ea3 n\u0103ng k\u1ebft n\u1ed1i v\u00e0 v\u1eadn h\u00e0nh c\u00e1c d\u1ecbch v\u1ee5 tr\u1ef1c tuy\u1ebfn.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Kha-nang-truy-cap-toan-cau\"><\/span>Kh\u1ea3 n\u0103ng truy c\u1eadp to\u00e0n c\u1ea7u<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>IP Public l\u00e0 \u0111\u1ecba ch\u1ec9 duy nh\u1ea5t gi\u00fap thi\u1ebft b\u1ecb ho\u1eb7c d\u1ecbch v\u1ee5 c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y v\u00e0 truy c\u1eadp t\u1eeb m\u1ecdi n\u01a1i tr\u00ean th\u1ebf gi\u1edbi c\u00f3 k\u1ebft n\u1ed1i Internet. \u0110i\u1ec1u n\u00e0y cho ph\u00e9p b\u1ea1n x\u00e2y d\u1ef1ng m\u1ed9t website, m\u00e1y ch\u1ee7 game, ho\u1eb7c h\u1ec7 th\u1ed1ng gi\u00e1m s\u00e1t m\u00e0 b\u1ea5t k\u1ef3 ai c\u0169ng c\u00f3 th\u1ec3 k\u1ebft n\u1ed1i \u0111\u01b0\u1ee3c, kh\u00f4ng b\u1ecb gi\u1edbi h\u1ea1n b\u1edfi v\u1ecb tr\u00ed \u0111\u1ecba l\u00fd.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Ho-tro-dich-vu-may-chu-va-hosting\"><\/span>H\u1ed7 tr\u1ee3 d\u1ecbch v\u1ee5 m\u00e1y ch\u1ee7 v\u00e0 hosting<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c doanh nghi\u1ec7p, vi\u1ec7c s\u1edf h\u1eefu ho\u1eb7c s\u1eed d\u1ee5ng m\u00e1y ch\u1ee7 c\u00f3 IP Public l\u00e0 \u0111i\u1ec1u ki\u1ec7n ti\u00ean quy\u1ebft \u0111\u1ec3 tri\u1ec3n khai website, \u1ee9ng d\u1ee5ng, ho\u1eb7c c\u00e1c d\u1ecbch v\u1ee5 tr\u1ef1c tuy\u1ebfn. IP Public gi\u00fap c\u00e1c d\u1ecbch v\u1ee5 n\u00e0y lu\u00f4n s\u1eb5n s\u00e0ng, d\u1ec5 d\u00e0ng \u0111\u01b0\u1ee3c truy c\u1eadp b\u1edfi kh\u00e1ch h\u00e0ng ho\u1eb7c ng\u01b0\u1eddi d\u00f9ng t\u1eeb b\u00ean ngo\u00e0i m\u1ea1ng n\u1ed9i b\u1ed9.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Ket-noi-tu-xa-an-toan-va-hieu-qua\"><\/span>K\u1ebft n\u1ed1i t\u1eeb xa an to\u00e0n v\u00e0 hi\u1ec7u qu\u1ea3<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>IP Public<\/strong> \u0111\u00f3ng vai tr\u00f2 tr\u1ecdng y\u1ebfu trong vi\u1ec7c thi\u1ebft l\u1eadp c\u00e1c k\u1ebft n\u1ed1i t\u1eeb xa. V\u00ed d\u1ee5, m\u1ed9t IP Public t\u0129nh cho ph\u00e9p b\u1ea1n d\u1ec5 d\u00e0ng truy c\u1eadp m\u00e1y t\u00ednh l\u00e0m vi\u1ec7c t\u1eeb nh\u00e0, ho\u1eb7c qu\u1ea3n l\u00fd h\u1ec7 th\u1ed1ng camera an ninh khi v\u1eafng m\u1eb7t. \u0110i\u1ec1u n\u00e0y mang l\u1ea1i s\u1ef1 linh ho\u1ea1t v\u00e0 hi\u1ec7u qu\u1ea3 cao trong c\u00f4ng vi\u1ec7c v\u00e0 qu\u1ea3n l\u00fd c\u00e1 nh\u00e2n.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Tang-cuong-kha-nang-giao-tiep-mang\"><\/span>T\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng giao ti\u1ebfp m\u1ea1ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Khi b\u1ea1n c\u00f3 m\u1ed9t IP Public ri\u00eang, vi\u1ec7c thi\u1ebft l\u1eadp c\u00e1c k\u1ebft n\u1ed1i ngang h\u00e0ng (peer-to-peer) ho\u1eb7c c\u00e1c d\u1ecbch v\u1ee5 \u0111\u1eb7c th\u00f9 nh\u01b0 <a href=\"https:\/\/interdata.vn\/blog\/voip-la-gi\/\">VoIP<\/a> (Voice over Internet Protocol) tr\u1edf n\u00ean d\u1ec5 d\u00e0ng v\u00e0 \u1ed5n \u0111\u1ecbnh h\u01a1n. \u0110i\u1ec1u n\u00e0y gi\u00fap t\u1ed1i \u01b0u h\u00f3a <a href=\"https:\/\/interdata.vn\/blog\/ux-la-gi\/\">tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng<\/a> trong c\u00e1c \u1ee9ng d\u1ee5ng y\u00eau c\u1ea7u <a href=\"https:\/\/interdata.vn\/blog\/bang-thong-la-gi\/\">b\u0103ng th\u00f4ng<\/a> v\u00e0 \u0111\u1ed9 tr\u1ec5 th\u1ea5p.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Kiem-soat-va-quan-ly-tot-hon\"><\/span>Ki\u1ec3m so\u00e1t v\u00e0 qu\u1ea3n l\u00fd t\u1ed1t h\u01a1n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng c\u1ea7n c\u1ea5u h\u00ecnh m\u1ea1ng ph\u1ee9c t\u1ea1p, nh\u01b0 m\u1ea1ng doanh nghi\u1ec7p ho\u1eb7c <a href=\"https:\/\/interdata.vn\/blog\/data-center-la-gi\/\">trung t\u00e2m d\u1eef li\u1ec7u<\/a>, vi\u1ec7c qu\u1ea3n l\u00fd c\u00e1c thi\u1ebft b\u1ecb c\u00f3 Public IP gi\u00fap d\u1ec5 d\u00e0ng theo d\u00f5i, ki\u1ec3m so\u00e1t v\u00e0 b\u1ea3o tr\u00ec. B\u1ea1n c\u00f3 th\u1ec3 thi\u1ebft l\u1eadp c\u00e1c quy t\u1eafc b\u1ea3o m\u1eadt v\u00e0 \u01b0u ti\u00ean b\u0103ng th\u00f4ng c\u1ee5 th\u1ec3 cho t\u1eebng d\u1ecbch v\u1ee5 quan tr\u1ecdng.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Pham-vi-su-dung-dia-chi-IP-Public\"><\/span>Ph\u1ea1m vi s\u1eed d\u1ee5ng \u0111\u1ecba ch\u1ec9 IP Public<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Khi \u0111\u00e3 hi\u1ec3u s\u01a1 l\u01b0\u1ee3c v\u1ec1 \u0111\u1ecba ch\u1ec9 IP Public l\u00e0 g\u00ec, h\u00e3y c\u00f9ng \u0111i\u1ec3m qua ph\u1ea1m vi s\u1eed d\u1ee5ng c\u1ee7a IP Public d\u01b0\u1edbi \u0111\u00e2y.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Doanh-nghiep-va-to-chuc\"><\/span>Doanh nghi\u1ec7p v\u00e0 t\u1ed5 ch\u1ee9c<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>C\u00e1c doanh nghi\u1ec7p v\u00e0 t\u1ed5 ch\u1ee9c c\u1ea7n \u0111\u1ecba ch\u1ec9 IP Public \u0111\u1ec3 c\u00f3 th\u1ec3 truy c\u1eadp v\u00e0 cung c\u1ea5p c\u00e1c d\u1ecbch v\u1ee5 tr\u1ef1c tuy\u1ebfn cho kh\u00e1ch h\u00e0ng v\u00e0 \u0111\u1ed1i t\u00e1c. M\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng ph\u1ed5 bi\u1ebfn c\u1ee7a IP Public trong doanh nghi\u1ec7p bao g\u1ed3m:<\/p>\n<ul>\n<li><strong>Website v\u00e0 <a href=\"https:\/\/interdata.vn\/blog\/web-application-la-gi\/\">\u1ee9ng d\u1ee5ng web<\/a><\/strong>: C\u00e1c doanh nghi\u1ec7p s\u1eed d\u1ee5ng IP Public \u0111\u1ec3 l\u01b0u tr\u1eef v\u00e0 qu\u1ea3n l\u00fd website, \u1ee9ng d\u1ee5ng web, v\u00e0 c\u00e1c d\u1ecbch v\u1ee5 tr\u1ef1c tuy\u1ebfn kh\u00e1c. \u0110i\u1ec1u n\u00e0y cho ph\u00e9p kh\u00e1ch h\u00e0ng truy c\u1eadp v\u00e0 t\u01b0\u01a1ng t\u00e1c v\u1edbi c\u00e1c d\u1ecbch v\u1ee5 c\u1ee7a doanh nghi\u1ec7p t\u1eeb b\u1ea5t k\u1ef3 \u0111\u00e2u tr\u00ean th\u1ebf gi\u1edbi.<\/li>\n<li><strong>M\u00e1y ch\u1ee7 email<\/strong>: \u0110\u1ecba ch\u1ec9 IP Public gi\u00fap doanh nghi\u1ec7p thi\u1ebft l\u1eadp v\u00e0 qu\u1ea3n l\u00fd c\u00e1c m\u00e1y ch\u1ee7 email, cho ph\u00e9p g\u1eedi v\u00e0 nh\u1eadn email t\u1eeb c\u00e1c \u0111\u1ecba ch\u1ec9 IP c\u00f4ng c\u1ed9ng kh\u00e1c.<\/li>\n<li><strong>VPN (Virtual Private Network)<\/strong>: C\u00e1c doanh nghi\u1ec7p s\u1eed d\u1ee5ng IP Public \u0111\u1ec3 thi\u1ebft l\u1eadp VPN, cho ph\u00e9p nh\u00e2n vi\u00ean truy c\u1eadp an to\u00e0n v\u00e0o m\u1ea1ng n\u1ed9i b\u1ed9 t\u1eeb xa.<\/li>\n<li><strong>D\u1ecbch v\u1ee5 \u0111\u00e1m m\u00e2y (<a href=\"https:\/\/interdata.vn\/blog\/cloud-services-la-gi\/\">Cloud Services<\/a>)<\/strong>: IP Public \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 k\u1ebft n\u1ed1i v\u1edbi c\u00e1c d\u1ecbch v\u1ee5 \u0111\u00e1m m\u00e2y, bao g\u1ed3m l\u01b0u tr\u1eef d\u1eef li\u1ec7u, m\u00e1y ch\u1ee7 \u1ea3o, v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00e1m m\u00e2y kh\u00e1c.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Truong-hoc-va-co-quan-chinh-phu\"><\/span>Tr\u01b0\u1eddng h\u1ecdc v\u00e0 c\u01a1 quan ch\u00ednh ph\u1ee7<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>C\u00e1c tr\u01b0\u1eddng h\u1ecdc v\u00e0 c\u01a1 quan ch\u00ednh ph\u1ee7 c\u0169ng c\u1ea7n s\u1eed d\u1ee5ng \u0111\u1ecba ch\u1ec9 IP Public \u0111\u1ec3 cung c\u1ea5p v\u00e0 truy c\u1eadp c\u00e1c d\u1ecbch v\u1ee5 tr\u1ef1c tuy\u1ebfn. M\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng ph\u1ed5 bi\u1ebfn c\u1ee7a IP Public trong l\u0129nh v\u1ef1c n\u00e0y bao g\u1ed3m:<\/p>\n<ul>\n<li><strong>H\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd h\u1ecdc t\u1eadp (LMS)<\/strong>: Tr\u01b0\u1eddng h\u1ecdc s\u1eed d\u1ee5ng IP Public \u0111\u1ec3 truy c\u1eadp v\u00e0 qu\u1ea3n l\u00fd c\u00e1c h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd h\u1ecdc t\u1eadp, cho ph\u00e9p h\u1ecdc sinh v\u00e0 gi\u00e1o vi\u00ean truy c\u1eadp t\u00e0i li\u1ec7u h\u1ecdc t\u1eadp v\u00e0 giao ti\u1ebfp tr\u1ef1c tuy\u1ebfn.<\/li>\n<li><strong>D\u1ecbch v\u1ee5 c\u00f4ng tr\u1ef1c tuy\u1ebfn<\/strong>: C\u00e1c c\u01a1 quan ch\u00ednh ph\u1ee7 s\u1eed d\u1ee5ng IP Public \u0111\u1ec3 cung c\u1ea5p c\u00e1c d\u1ecbch v\u1ee5 c\u00f4ng tr\u1ef1c tuy\u1ebfn, bao g\u1ed3m \u0111\u0103ng k\u00fd, n\u1ed9p \u0111\u01a1n, v\u00e0 tra c\u1ee9u th\u00f4ng tin.<\/li>\n<li><strong>An ninh m\u1ea1ng<\/strong>: C\u00e1c t\u1ed5 ch\u1ee9c n\u00e0y s\u1eed d\u1ee5ng IP Public \u0111\u1ec3 thi\u1ebft l\u1eadp c\u00e1c gi\u1ea3i ph\u00e1p an ninh m\u1ea1ng, bao g\u1ed3m <a href=\"https:\/\/interdata.vn\/blog\/tuong-lua-firewall\/\">t\u01b0\u1eddng l\u1eeda<\/a> (firewall) v\u00e0 h\u1ec7 th\u1ed1ng ph\u00e1t hi\u1ec7n x\u00e2m nh\u1eadp (IDS\/IPS).<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Han-che-khi-su-dung-IP-Public\"><\/span>H\u1ea1n ch\u1ebf khi s\u1eed d\u1ee5ng IP Public<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>M\u1eb7c d\u00f9 quan tr\u1ecdng, IP Public c\u0169ng c\u00f3 nh\u1eefng h\u1ea1n ch\u1ebf v\u00e0 r\u1ee7i ro nh\u1ea5t \u0111\u1ecbnh m\u00e0 b\u1ea1n c\u1ea7n l\u01b0u \u00fd.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Van-de-bao-mat\"><\/span>V\u1ea5n \u0111\u1ec1 b\u1ea3o m\u1eadt<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>V\u00ec IP Public l\u00e0 \u0111\u1ecba ch\u1ec9 c\u00f4ng khai tr\u00ean Internet, n\u00f3 d\u1ec5 tr\u1edf th\u00e0nh m\u1ee5c ti\u00eau c\u1ee7a c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng m\u1ea1ng. Hacker c\u00f3 th\u1ec3 qu\u00e9t c\u00e1c \u0111\u1ecba ch\u1ec9 IP \u0111\u1ec3 t\u00ecm ki\u1ebfm l\u1ed7 h\u1ed5ng, th\u1ef1c hi\u1ec7n c\u00e1c cu\u1ed9c <a href=\"https:\/\/interdata.vn\/blog\/ddos-la-gi\/\">t\u1ea5n c\u00f4ng DDoS<\/a> (t\u1ea5n c\u00f4ng t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5) ho\u1eb7c c\u1ed1 g\u1eafng x\u00e2m nh\u1eadp v\u00e0o h\u1ec7 th\u1ed1ng n\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 \u0111\u00fang c\u00e1ch.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Kho-khan-trong-quan-ly-doi-voi-IP-dong\"><\/span>Kh\u00f3 kh\u0103n trong qu\u1ea3n l\u00fd (\u0111\u1ed1i v\u1edbi IP \u0111\u1ed9ng)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>N\u1ebfu b\u1ea1n s\u1eed d\u1ee5ng IP Public \u0111\u1ed9ng, vi\u1ec7c \u0111\u1ecba ch\u1ec9 IP thay \u0111\u1ed5i li\u00ean t\u1ee5c c\u00f3 th\u1ec3 g\u00e2y b\u1ea5t ti\u1ec7n cho c\u00e1c d\u1ecbch v\u1ee5 c\u1ea7n \u0111\u1ecba ch\u1ec9 c\u1ed1 \u0111\u1ecbnh. B\u1ea1n s\u1ebd ph\u1ea3i th\u01b0\u1eddng xuy\u00ean c\u1eadp nh\u1eadt \u0111\u1ecba ch\u1ec9 IP m\u1edbi ho\u1eb7c s\u1eed d\u1ee5ng c\u00e1c d\u1ecbch v\u1ee5 DDNS \u0111\u1ec3 duy tr\u00ec k\u1ebft n\u1ed1i.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Chi-phi\"><\/span>Chi ph\u00ed<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>IP Public t\u0129nh th\u01b0\u1eddng c\u00f3 chi ph\u00ed cao h\u01a1n so v\u1edbi IP Public \u0111\u1ed9ng. C\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 Internet th\u01b0\u1eddng t\u00ednh th\u00eam ph\u00ed cho vi\u1ec7c c\u1ea5p ph\u00e1t v\u00e0 duy tr\u00ec m\u1ed9t \u0111\u1ecba ch\u1ec9 IP kh\u00f4ng \u0111\u1ed5i.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Gioi-han-tai-nguyen\"><\/span>Gi\u1edbi h\u1ea1n t\u00e0i nguy\u00ean<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u1eb7c bi\u1ec7t v\u1edbi IPv4, s\u1ed1 l\u01b0\u1ee3ng \u0111\u1ecba ch\u1ec9 IP Public l\u00e0 h\u1eefu h\u1ea1n. \u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn t\u00ecnh tr\u1ea1ng c\u1ea1n ki\u1ec7t \u0111\u1ecba ch\u1ec9 v\u00e0 th\u00fac \u0111\u1ea9y vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i sang IPv6. Vi\u1ec7c khan hi\u1ebfm t\u00e0i nguy\u00ean c\u0169ng l\u00e0m t\u0103ng gi\u00e1 th\u00e0nh c\u1ee7a IP Public t\u0129nh.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Phan-biet-IP-Public-va-IP-Private\"><\/span>Ph\u00e2n bi\u1ec7t IP Public v\u00e0 IP Private<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Nhi\u1ec1u ng\u01b0\u1eddi th\u01b0\u1eddng nh\u1ea7m l\u1eabn gi\u1eefa IP Public v\u00e0 IP Private. \u0110\u1ec3 gi\u00fap b\u1ea1n hi\u1ec3u r\u00f5 h\u01a1n, InterData \u0111\u00e3 t\u1ea1o m\u1ed9t b\u1ea3ng so s\u00e1nh chi ti\u1ebft d\u01b0\u1edbi \u0111\u00e2y. V\u1ec1 c\u01a1 b\u1ea3n, IP Private l\u00e0 \u0111\u1ecba ch\u1ec9 d\u00f9ng trong m\u1ea1ng n\u1ed9i b\u1ed9 (<a href=\"https:\/\/interdata.vn\/blog\/mang-lan\/\">m\u1ea1ng LAN<\/a>) c\u1ee7a gia \u0111\u00ecnh ho\u1eb7c v\u0103n ph\u00f2ng, c\u00f2n IP Public l\u00e0 \u0111\u1ecba ch\u1ec9 d\u00f9ng \u0111\u1ec3 k\u1ebft n\u1ed1i v\u1edbi Internet.<\/p>\n<p>B\u1ea3ng so s\u00e1nh chi ti\u1ebft:<\/p>\n<table style=\"width: 100%; border-collapse: collapse; border: 2px solid #0D6EFD;\">\n<thead>\n<tr style=\"background-color: #0d6efd; color: white;\">\n<th style=\"padding: 10px; border: 1px solid #0d6efd; text-align: center;\"><span style=\"color: #ffffff;\">Ti\u00eau ch\u00ed so s\u00e1nh<\/span><\/th>\n<th style=\"padding: 10px; border: 1px solid #0d6efd; text-align: center;\"><span style=\"color: #ffffff;\">IP Public<\/span><\/th>\n<th style=\"padding: 10px; border: 1px solid #0d6efd; text-align: center;\"><span style=\"color: #ffffff;\">IP Private<\/span><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 8px; border: 1px solid #0D6EFD;\">Ph\u1ea1m vi s\u1eed d\u1ee5ng<\/td>\n<td style=\"padding: 8px; border: 1px solid #0D6EFD;\">M\u1ea1ng Internet to\u00e0n c\u1ea7u<\/td>\n<td style=\"padding: 8px; border: 1px solid #0D6EFD;\">M\u1ea1ng n\u1ed9i b\u1ed9 (LAN) nh\u01b0 gia \u0111\u00ecnh, v\u0103n ph\u00f2ng<\/td>\n<\/tr>\n<tr style=\"background-color: #f0f8ff;\">\n<td style=\"padding: 8px; border: 1px solid #0D6EFD;\">T\u00ednh duy nh\u1ea5t<\/td>\n<td style=\"padding: 8px; border: 1px solid #0D6EFD;\">Duy nh\u1ea5t tr\u00ean to\u00e0n c\u1ea7u t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m<\/td>\n<td style=\"padding: 8px; border: 1px solid #0D6EFD;\">Duy nh\u1ea5t trong m\u1ed9t m\u1ea1ng c\u1ee5c b\u1ed9 c\u1ee5 th\u1ec3<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px; border: 1px solid #0D6EFD;\">Kh\u1ea3 n\u0103ng truy c\u1eadp<\/td>\n<td style=\"padding: 8px; border: 1px solid #0D6EFD;\">C\u00f3 th\u1ec3 truy c\u1eadp tr\u1ef1c ti\u1ebfp t\u1eeb Internet<\/td>\n<td style=\"padding: 8px; border: 1px solid #0D6EFD;\">KH\u00d4NG th\u1ec3 truy c\u1eadp tr\u1ef1c ti\u1ebfp t\u1eeb Internet<\/td>\n<\/tr>\n<tr style=\"background-color: #f0f8ff;\">\n<td style=\"padding: 8px; border: 1px solid #0D6EFD;\">M\u1ee5c \u0111\u00edch ch\u00ednh<\/td>\n<td style=\"padding: 8px; border: 1px solid #0D6EFD;\">Cho ph\u00e9p thi\u1ebft b\u1ecb giao ti\u1ebfp v\u1edbi Internet v\u00e0 c\u00e1c d\u1ecbch v\u1ee5 b\u00ean ngo\u00e0i<\/td>\n<td style=\"padding: 8px; border: 1px solid #0D6EFD;\">Cho ph\u00e9p thi\u1ebft b\u1ecb giao ti\u1ebfp trong c\u00f9ng m\u1ed9t m\u1ea1ng c\u1ee5c b\u1ed9<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px; border: 1px solid #0D6EFD;\">C\u1ea5p ph\u00e1t b\u1edfi<\/td>\n<td style=\"padding: 8px; border: 1px solid #0D6EFD;\">Nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 Internet (ISP)<\/td>\n<td style=\"padding: 8px; border: 1px solid #0D6EFD;\">Router ho\u1eb7c <a href=\"https:\/\/interdata.vn\/blog\/dhcp-la-gi\/\">DHCP<\/a> Server trong m\u1ea1ng n\u1ed9i b\u1ed9<\/td>\n<\/tr>\n<tr style=\"background-color: #f0f8ff;\">\n<td style=\"padding: 8px; border: 1px solid #0D6EFD;\">V\u00ed d\u1ee5 d\u1ea3i IP<\/td>\n<td style=\"padding: 8px; border: 1px solid #0D6EFD;\">B\u1ea5t k\u1ef3 \u0111\u1ecba ch\u1ec9 IP kh\u00f4ng n\u1eb1m trong d\u1ea3i Private \u0111\u00e3 \u0111\u1ecbnh (v\u00ed d\u1ee5: 8.8.8.8, 203.0.113.45)<\/td>\n<td style=\"padding: 8px; border: 1px solid #0D6EFD;\">10.0.0.0\/8, 172.16.0.0\/12, 192.168.0.0\/16<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px; border: 1px solid #0D6EFD;\">C\u01a1 ch\u1ebf li\u00ean k\u1ebft Internet<\/td>\n<td style=\"padding: 8px; border: 1px solid #0D6EFD;\">K\u1ebft n\u1ed1i tr\u1ef1c ti\u1ebfp v\u1edbi Internet<\/td>\n<td style=\"padding: 8px; border: 1px solid #0D6EFD;\">C\u1ea7n c\u01a1 ch\u1ebf NAT (<a href=\"https:\/\/interdata.vn\/blog\/nat-la-gi\/\">Network Address Translation<\/a>) tr\u00ean router \u0111\u1ec3 truy c\u1eadp Internet<\/td>\n<\/tr>\n<tr style=\"background-color: #f0f8ff;\">\n<td style=\"padding: 8px; border: 1px solid #0D6EFD;\">Chi ph\u00ed<\/td>\n<td style=\"padding: 8px; border: 1px solid #0D6EFD;\">Th\u01b0\u1eddng c\u00f3 chi ph\u00ed khi mu\u1ed1n c\u00f3 <a href=\"https:\/\/interdata.vn\/blog\/ip-tinh\/\">IP t\u0129nh<\/a> (\u0111\u1eb7c bi\u1ec7t l\u00e0 \u0111\u1ed1i v\u1edbi doanh nghi\u1ec7p)<\/td>\n<td style=\"padding: 8px; border: 1px solid #0D6EFD;\">Mi\u1ec5n ph\u00ed<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 8px; border: 1px solid #0D6EFD;\">\u1ee8ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh<\/td>\n<td style=\"padding: 8px; border: 1px solid #0D6EFD;\">M\u00e1y ch\u1ee7 web, <a href=\"https:\/\/interdata.vn\/blog\/vpn-server-la-gi\/\">VPN Server<\/a>, camera gi\u00e1m s\u00e1t t\u1eeb xa, c\u00e1c d\u1ecbch v\u1ee5 tr\u1ef1c tuy\u1ebfn<\/td>\n<td style=\"padding: 8px; border: 1px solid #0D6EFD;\">M\u00e1y t\u00ednh c\u00e1 nh\u00e2n, \u0111i\u1ec7n tho\u1ea1i, m\u00e1y in trong nh\u00e0\/v\u0103n ph\u00f2ng, thi\u1ebft b\u1ecb <a href=\"https:\/\/interdata.vn\/blog\/internet-of-things\/\">IoT<\/a> n\u1ed9i b\u1ed9<\/td>\n<\/tr>\n<tr style=\"background-color: #f0f8ff;\">\n<td style=\"padding: 8px; border: 1px solid #0D6EFD;\">M\u1ee9c \u0111\u1ed9 ph\u01a1i b\u00e0y b\u1ea3o m\u1eadt<\/td>\n<td style=\"padding: 8px; border: 1px solid #0D6EFD;\">D\u1ec5 b\u1ecb t\u1ea5n c\u00f4ng t\u1eeb b\u00ean ngo\u00e0i n\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 b\u1eb1ng t\u01b0\u1eddng l\u1eeda ho\u1eb7c c\u00e1c bi\u1ec7n ph\u00e1p kh\u00e1c<\/td>\n<td style=\"padding: 8px; border: 1px solid #0D6EFD;\">T\u01b0\u01a1ng \u0111\u1ed1i an to\u00e0n h\u01a1n v\u00ec kh\u00f4ng tr\u1ef1c ti\u1ebfp ph\u01a1i b\u00e0y ra Internet<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<figure id=\"attachment_15831\" aria-describedby=\"caption-attachment-15831\" style=\"width: 801px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-15831\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/08\/Su-khac-nhau-giua-IP-Private-va-IP-Public-la-gi.png\" alt=\"S\u1ef1 kh\u00e1c nhau gi\u1eefa IP Private v\u00e0 IP Public l\u00e0 g\u00ec?\" width=\"801\" height=\"441\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/08\/Su-khac-nhau-giua-IP-Private-va-IP-Public-la-gi.png 521w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/08\/Su-khac-nhau-giua-IP-Private-va-IP-Public-la-gi-300x165.png 300w\" sizes=\"auto, (max-width: 801px) 100vw, 801px\" \/><figcaption id=\"caption-attachment-15831\" class=\"wp-caption-text\">S\u1ef1 kh\u00e1c nhau gi\u1eefa IP Private v\u00e0 IP Public l\u00e0 g\u00ec?<\/figcaption><\/figure>\n<p><strong>Minh h\u1ecda b\u1eb1ng v\u00ed d\u1ee5 th\u1ef1c t\u1ebf:<\/strong><\/p>\n<p>H\u00e3y h\u00ecnh dung m\u1ea1ng nh\u00e0 b\u1ea1n l\u00e0 m\u1ed9t t\u00f2a nh\u00e0 chung c\u01b0, v\u00e0 Internet l\u00e0 th\u00e0nh ph\u1ed1 r\u1ed9ng l\u1edbn.<\/p>\n<p><strong>IP Public<\/strong> c\u1ee7a b\u1ea1n gi\u1ed1ng nh\u01b0 \u0111\u1ecba ch\u1ec9 c\u1ee7a t\u00f2a nh\u00e0 chung c\u01b0 \u0111\u00f3 (v\u00ed d\u1ee5: 100 \u0111\u01b0\u1eddng Nguy\u1ec5n Hu\u1ec7). B\u1ea5t k\u1ef3 ai mu\u1ed1n g\u1eedi th\u01b0 ho\u1eb7c t\u00ecm b\u1ea1n t\u1eeb b\u00ean ngo\u00e0i th\u00e0nh ph\u1ed1 \u0111\u1ec1u ph\u1ea3i bi\u1ebft \u0111\u1ecba ch\u1ec9 t\u00f2a nh\u00e0 n\u00e0y. \u0110\u00e2y l\u00e0 \u0111\u1ecba ch\u1ec9 m\u00e0 th\u1ebf gi\u1edbi b\u00ean ngo\u00e0i nh\u00ecn th\u1ea5y.<\/p>\n<p><strong>IP Private<\/strong> gi\u1ed1ng nh\u01b0 s\u1ed1 c\u0103n h\u1ed9 ri\u00eang c\u1ee7a b\u1ea1n b\u00ean trong t\u00f2a nh\u00e0 (v\u00ed d\u1ee5: c\u0103n h\u1ed9 501, 502). M\u1ecdi ng\u01b0\u1eddi trong c\u00f9ng t\u00f2a nh\u00e0 c\u00f3 th\u1ec3 bi\u1ebft s\u1ed1 c\u0103n h\u1ed9 c\u1ee7a nhau \u0111\u1ec3 giao ti\u1ebfp n\u1ed9i b\u1ed9. Tuy nhi\u00ean, n\u1ebfu ai \u0111\u00f3 t\u1eeb b\u00ean ngo\u00e0i mu\u1ed1n t\u00ecm b\u1ea1n, h\u1ecd kh\u00f4ng th\u1ec3 ch\u1ec9 bi\u1ebft s\u1ed1 c\u0103n h\u1ed9 501 m\u00e0 ph\u1ea3i bi\u1ebft \u0111\u1ecba ch\u1ec9 t\u00f2a nh\u00e0 tr\u01b0\u1edbc. Router c\u1ee7a b\u1ea1n (b\u1ed9 ph\u1eadn qu\u1ea3n l\u00fd t\u00f2a nh\u00e0) s\u1ebd c\u00f3 nhi\u1ec7m v\u1ee5 nh\u1eadn th\u01b0 g\u1eedi \u0111\u1ebfn \u0111\u1ecba ch\u1ec9 t\u00f2a nh\u00e0 (IP Public) v\u00e0 chuy\u1ec3n ph\u00e1t \u0111\u1ebfn \u0111\u00fang c\u0103n h\u1ed9 (IP Private) b\u00ean trong.<\/p>\n<p>S\u1ef1 kh\u00e1c bi\u1ec7t n\u00e0y l\u00e0 c\u1ed1t l\u00f5i \u0111\u1ec3 duy tr\u00ec tr\u1eadt t\u1ef1 v\u00e0 kh\u1ea3 n\u0103ng giao ti\u1ebfp c\u1ee7a h\u00e0ng t\u1ef7 thi\u1ebft b\u1ecb tr\u00ean Internet, \u0111\u1ed3ng th\u1eddi gi\u00fap ti\u1ebft ki\u1ec7m t\u00e0i nguy\u00ean \u0111\u1ecba ch\u1ec9 IP v\u00e0 t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt cho m\u1ea1ng n\u1ed9i b\u1ed9.<\/p>\n<p><iframe loading=\"lazy\" title=\"IP PUBLIC &amp; IP PRIVATE | S\u1ef1 kh\u00e1c bi\u1ec7t l\u00e0 g\u00ec? | TING3S\" width=\"1020\" height=\"574\" src=\"https:\/\/www.youtube.com\/embed\/IKCuOO27lMY?start=1&#038;feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Ly-do-vi-sao-dia-chi-IP-Public-lai-thay-doi\"><\/span>L\u00fd do v\u00ec sao \u0111\u1ecba ch\u1ec9 IP Public l\u1ea1i thay \u0111\u1ed5i?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>C\u00f3 nhi\u1ec1u l\u00fd do khi\u1ebfn \u0111\u1ecba ch\u1ec9 IP Public c\u00f3 th\u1ec3 thay \u0111\u1ed5i:<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Doi-voi-nguoi-dung\"><\/span>\u0110\u1ed1i v\u1edbi ng\u01b0\u1eddi d\u00f9ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Nguy\u00ean nh\u00e2n t\u1eeb nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 internet (ISP)<\/strong>: ISP c\u00f3 th\u1ec3 thay \u0111\u1ed5i \u0111\u1ecba ch\u1ec9 IP Public c\u1ee7a b\u1ea1n nh\u1eb1m t\u1ed1i \u01b0u h\u00f3a ch\u1ea5t l\u01b0\u1ee3ng d\u1ecbch v\u1ee5 ho\u1eb7c n\u00e2ng cao <a href=\"https:\/\/interdata.vn\/blog\/bao-mat-mang\/\">b\u1ea3o m\u1eadt m\u1ea1ng<\/a>. S\u1ef1 thay \u0111\u1ed5i n\u00e0y c\u00f3 th\u1ec3 x\u1ea3y ra \u0111\u1ecbnh k\u1ef3 ho\u1eb7c do c\u00e1c s\u1ef1 c\u1ed1 k\u1ef9 thu\u1eadt ph\u00e1t sinh.<\/p>\n<p><strong>S\u1ef1 thay \u0111\u1ed5i c\u1ee7a router ho\u1eb7c thi\u1ebft b\u1ecb m\u1ea1ng<\/strong>: Khi b\u1ea1n thay th\u1ebf router ho\u1eb7c c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng, \u0111\u1ecba ch\u1ec9 IP Public c\u0169ng c\u00f3 th\u1ec3 b\u1ecb thay \u0111\u1ed5i. Vi\u1ec7c n\u00e0y th\u01b0\u1eddng x\u1ea3y ra khi b\u1ea1n c\u00e0i \u0111\u1eb7t l\u1ea1i m\u1ea1ng ho\u1eb7c th\u1ef1c hi\u1ec7n c\u1ea5u h\u00ecnh m\u1edbi cho thi\u1ebft b\u1ecb.<\/p>\n<p><strong>Thi\u1ebft l\u1eadp \u0111\u1ecba ch\u1ec9 IP t\u0129nh<\/strong>: N\u1ebfu b\u1ea1n thi\u1ebft l\u1eadp \u0111\u1ecba ch\u1ec9 IP t\u0129nh cho thi\u1ebft b\u1ecb c\u1ee7a m\u00ecnh, \u0111\u1ecba ch\u1ec9 IP Public s\u1ebd kh\u00f4ng thay \u0111\u1ed5i. Tuy nhi\u00ean, n\u1ebfu c\u00f3 b\u1ea5t k\u1ef3 s\u1ef1 thay \u0111\u1ed5i n\u00e0o trong c\u1ea5u h\u00ecnh m\u1ea1ng ho\u1eb7c t\u1eeb ph\u00eda ISP, \u0111\u1ecba ch\u1ec9 IP Public c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 b\u1ecb \u1ea3nh h\u01b0\u1edfng v\u00e0 thay \u0111\u1ed5i.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Doi-voi-nguoi-cung-cap-dich-vu\"><\/span>\u0110\u1ed1i v\u1edbi ng\u01b0\u1eddi cung c\u1ea5p d\u1ecbch v\u1ee5<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Nguy\u00ean nh\u00e2n do vi\u1ec7c c\u1eadp nh\u1eadt m\u1ea1ng: M\u1ed9t l\u00fd do ch\u00ednh khi\u1ebfn \u0111\u1ecba ch\u1ec9 IP Public b\u1ecb thay \u0111\u1ed5i l\u00e0 do qu\u00e1 tr\u00ecnh c\u1eadp nh\u1eadt m\u1ea1ng. Khi h\u1ec7 th\u1ed1ng m\u1ea1ng \u0111\u01b0\u1ee3c n\u00e2ng c\u1ea5p ho\u1eb7c c\u1ea3i thi\u1ec7n, \u0111\u1ecba ch\u1ec9 IP Public c\u00f3 th\u1ec3 c\u1ea7n \u0111\u01b0\u1ee3c thay \u0111\u1ed5i \u0111\u1ec3 ph\u1ea3n \u00e1nh nh\u1eefng thay \u0111\u1ed5i trong c\u1ea5u tr\u00fac m\u1ea1ng.<\/p>\n<ul>\n<li><strong>Thay \u0111\u1ed5i t\u1eeb ph\u00eda nh\u00e0 m\u1ea1ng<\/strong>: Nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 Internet c\u00f3 th\u1ec3 thay \u0111\u1ed5i \u0111\u1ecba ch\u1ec9 IP Public c\u1ee7a b\u1ea1n d\u1ef1a tr\u00ean nhu c\u1ea7u v\u00e0 y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt. Vi\u1ec7c n\u00e0y th\u01b0\u1eddng x\u1ea3y ra khi h\u1ecd c\u1ea7n c\u1eadp nh\u1eadt h\u1ec7 th\u1ed1ng m\u1ea1ng ho\u1eb7c gi\u1ea3i quy\u1ebft c\u00e1c s\u1ef1 c\u1ed1 k\u1ef9 thu\u1eadt.<\/li>\n<li><strong>B\u1ea3o m\u1eadt v\u00e0 qu\u1ea3n l\u00fd m\u1ea1ng<\/strong>: \u0110\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n v\u00e0 b\u1ea3o m\u1eadt cho h\u1ec7 th\u1ed1ng m\u1ea1ng, \u0111\u1ecba ch\u1ec9 IP Public c\u0169ng c\u00f3 th\u1ec3 b\u1ecb thay \u0111\u1ed5i. Thay \u0111\u1ed5i \u0111\u1ecba ch\u1ec9 IP Public gi\u00fap ng\u0103n ch\u1eb7n c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng m\u1ea1ng v\u00e0 b\u1ea3o v\u1ec7 th\u00f4ng tin quan tr\u1ecdng c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/li>\n<li><strong>C\u00f4ng ngh\u1ec7 m\u1edbi<\/strong>: \u0110\u1ecba ch\u1ec9 IP Public c\u0169ng c\u00f3 th\u1ec3 thay \u0111\u1ed5i do vi\u1ec7c tri\u1ec3n khai c\u00e1c c\u00f4ng ngh\u1ec7 m\u1edbi. Khi c\u00f3 s\u1ef1 ph\u00e1t tri\u1ec3n trong l\u0129nh v\u1ef1c c\u00f4ng ngh\u1ec7 m\u1ea1ng, vi\u1ec7c thay \u0111\u1ed5i \u0111\u1ecba ch\u1ec9 IP Public l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u c\u1ee7a c\u00f4ng ngh\u1ec7 m\u1edbi.<\/li>\n<\/ul>\n<figure id=\"attachment_15833\" aria-describedby=\"caption-attachment-15833\" style=\"width: 829px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-15833\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/08\/Ly-do-vi-sao-dia-chi-IP-Public-lai-thay-doi-1.jpg\" alt=\"L\u00fd do v\u00ec sao \u0111\u1ecba ch\u1ec9 IP Public l\u1ea1i thay \u0111\u1ed5i\" width=\"829\" height=\"504\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/08\/Ly-do-vi-sao-dia-chi-IP-Public-lai-thay-doi-1.jpg 829w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/08\/Ly-do-vi-sao-dia-chi-IP-Public-lai-thay-doi-1-300x182.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/08\/Ly-do-vi-sao-dia-chi-IP-Public-lai-thay-doi-1-768x467.jpg 768w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/08\/Ly-do-vi-sao-dia-chi-IP-Public-lai-thay-doi-1-750x456.jpg 750w\" sizes=\"auto, (max-width: 829px) 100vw, 829px\" \/><figcaption id=\"caption-attachment-15833\" class=\"wp-caption-text\">L\u00fd do v\u00ec sao \u0111\u1ecba ch\u1ec9 IP Public l\u1ea1i thay \u0111\u1ed5i?<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"Ung-dung-thuc-te-cua-IP-Public\"><\/span>\u1ee8ng d\u1ee5ng th\u1ef1c t\u1ebf c\u1ee7a IP Public<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Hi\u1ec3u \u0111\u01b0\u1ee3c \u0111\u1ecba ch\u1ec9 <strong>IP Public l\u00e0 g\u00ec<\/strong>, gi\u1edd ch\u00fang ta h\u00e3y c\u00f9ng xem m\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Truy-cap-va-quan-ly-VPSCloud-Server\"><\/span>Truy c\u1eadp v\u00e0 qu\u1ea3n l\u00fd VPS\/Cloud Server<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Khi b\u1ea1n thu\u00ea m\u1ed9t m\u00e1y ch\u1ee7 \u1ea3o (<a href=\"https:\/\/interdata.vn\/blog\/vps-la-gi\/\">VPS<\/a>) ho\u1eb7c m\u00e1y ch\u1ee7 Cloud t\u1eeb <strong>InterData<\/strong>, ch\u00fang t\u00f4i s\u1ebd cung c\u1ea5p cho b\u1ea1n m\u1ed9t \u0111\u1ecba ch\u1ec9 <strong>IP Public<\/strong>. B\u1ea1n c\u1ea7n d\u00f9ng \u0111\u1ecba ch\u1ec9 n\u00e0y \u0111\u1ec3 k\u1ebft n\u1ed1i t\u1eeb m\u00e1y t\u00ednh c\u1ee7a m\u00ecnh, c\u00e0i \u0111\u1eb7t ph\u1ea7n m\u1ec1m, qu\u1ea3n tr\u1ecb h\u1ec7 th\u1ed1ng ho\u1eb7c l\u01b0u tr\u1eef d\u1eef li\u1ec7u.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Trien-khai-websiteung-dung-truc-tuyen\"><\/span>Tri\u1ec3n khai website\/\u1ee9ng d\u1ee5ng tr\u1ef1c tuy\u1ebfn<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>M\u1ed7i website \u0111\u1ec1u c\u00f3 m\u1ed9t <a href=\"https:\/\/interdata.vn\/blog\/domain-la-gi\/\">t\u00ean mi\u1ec1n<\/a> (domain), nh\u01b0ng \u0111\u1ec3 t\u00ean mi\u1ec1n \u0111\u00f3 ho\u1ea1t \u0111\u1ed9ng, n\u00f3 ph\u1ea3i \u0111\u01b0\u1ee3c tr\u1ecf \u0111\u1ebfn m\u1ed9t \u0111\u1ecba ch\u1ec9 <strong>IP Public<\/strong> c\u1ee7a m\u00e1y ch\u1ee7 ch\u1ee9a website. V\u00ed d\u1ee5, khi b\u1ea1n g\u00f5 <code>interdata.vn<\/code>, tr\u00ecnh duy\u1ec7t c\u1ee7a b\u1ea1n s\u1ebd t\u00ecm \u0111\u1ebfn \u0111\u1ecba ch\u1ec9 IP c\u1ee7a m\u00e1y ch\u1ee7 <strong>InterData<\/strong> \u0111\u1ec3 l\u1ea5y d\u1eef li\u1ec7u trang web.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Ket-noi-camera-IP-Remote-Desktop\"><\/span>K\u1ebft n\u1ed1i camera IP, Remote Desktop<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>V\u1edbi m\u1ed9t \u0111\u1ecba ch\u1ec9 <strong>IP Public<\/strong> t\u0129nh, b\u1ea1n c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng c\u1ea5u h\u00ecnh camera IP \u0111\u1ec3 truy c\u1eadp t\u1eeb \u0111i\u1ec7n tho\u1ea1i di \u0111\u1ed9ng d\u00f9 b\u1ea1n \u0111ang \u1edf b\u1ea5t k\u1ef3 \u0111\u00e2u. T\u01b0\u01a1ng t\u1ef1, c\u00e1c ph\u1ea7n m\u1ec1m <strong>Remote Desktop<\/strong> nh\u01b0 TeamViewer hay AnyDesk c\u0169ng d\u00f9ng IP \u0111\u1ec3 thi\u1ebft l\u1eadp k\u1ebft n\u1ed1i t\u1eeb xa.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Su-dung-trong-VPN-bao-mat-truy-cap-tu-xa\"><\/span>S\u1eed d\u1ee5ng trong VPN, b\u1ea3o m\u1eadt truy c\u1eadp t\u1eeb xa<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>VPN s\u1eed d\u1ee5ng <strong>IP Public<\/strong> c\u1ee7a m\u00e1y ch\u1ee7 VPN \u0111\u1ec3 t\u1ea1o ra m\u1ed9t \u0111\u01b0\u1eddng h\u1ea7m m\u00e3 h\u00f3a, gi\u00fap b\u1ea1n \u1ea9n danh t\u00ednh v\u00e0 truy c\u1eadp v\u00e0o c\u00e1c trang web b\u1ecb ch\u1eb7n. C\u00e1c h\u1ec7 th\u1ed1ng b\u1ea3o m\u1eadt t\u1eeb xa c\u0169ng d\u00f9ng IP \u0111\u1ec3 x\u00e1c th\u1ef1c v\u00e0 c\u1ea5p quy\u1ec1n truy c\u1eadp.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Khi-nao-can-dung-IP-Public-tinh\"><\/span>Khi n\u00e0o c\u1ea7n d\u00f9ng IP Public t\u0129nh?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>N\u1ebfu b\u1ea1n ch\u1ec9 c\u00f3 nhu c\u1ea7u l\u01b0\u1edbt web, xem phim, IP \u0111\u1ed9ng l\u00e0 \u0111\u1ee7. Tuy nhi\u00ean, c\u00f3 nh\u1eefng tr\u01b0\u1eddng h\u1ee3p <strong>IP Public<\/strong> t\u0129nh l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1i \u01b0u.<\/p>\n<ul>\n<li><strong>Khi hosting website\/doanh nghi\u1ec7p c\u1ea7n \u0111\u1ecba ch\u1ec9 c\u1ed1 \u0111\u1ecbnh:<\/strong> N\u1ebfu b\u1ea1n \u0111ang x\u00e2y d\u1ef1ng m\u1ed9t website hay server ri\u00eang cho doanh nghi\u1ec7p, b\u1ea1n c\u1ea7n m\u1ed9t \u0111\u1ecba ch\u1ec9 IP kh\u00f4ng thay \u0111\u1ed5i \u0111\u1ec3 ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 truy c\u1eadp li\u00ean t\u1ee5c m\u00e0 kh\u00f4ng b\u1ecb gi\u00e1n \u0111o\u1ea1n.<\/li>\n<li><strong>Khi tri\u1ec3n khai server mail, server game, remote access \u1ed5n \u0111\u1ecbnh:<\/strong> C\u00e1c d\u1ecbch v\u1ee5 n\u00e0y \u0111\u00f2i h\u1ecfi m\u1ed9t \u0111\u1ecba ch\u1ec9 c\u1ed1 \u0111\u1ecbnh \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng tr\u01a1n tru. N\u1ebfu IP thay \u0111\u1ed5i li\u00ean t\u1ee5c, b\u1ea1n s\u1ebd ph\u1ea3i c\u1ea5u h\u00ecnh l\u1ea1i m\u1ed7i khi IP m\u1edbi \u0111\u01b0\u1ee3c g\u00e1n.<\/li>\n<\/ul>\n<p>V\u1ec1 chi ph\u00ed, <strong>IP Public<\/strong> t\u0129nh th\u01b0\u1eddng t\u1ed1n k\u00e9m h\u01a1n so v\u1edbi IP \u0111\u1ed9ng do ISP ph\u1ea3i d\u00e0nh ri\u00eang m\u1ed9t \u0111\u1ecba ch\u1ec9 cho b\u1ea1n. Tuy nhi\u00ean, hi\u1ec7u qu\u1ea3 v\u00e0 s\u1ef1 \u1ed5n \u0111\u1ecbnh m\u00e0 n\u00f3 mang l\u1ea1i l\u00e0 ho\u00e0n to\u00e0n x\u1ee9ng \u0111\u00e1ng v\u1edbi c\u00e1c nhu c\u1ea7u chuy\u00ean bi\u1ec7t.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cach-kiem-tra-IP-Public-chinh-xac-nhat\"><\/span>C\u00e1ch ki\u1ec3m tra IP Public ch\u00ednh x\u00e1c nh\u1ea5t<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>C\u00f3 nhi\u1ec1u ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ec3 check \u0111\u1ecba ch\u1ec9 IP Public c\u1ee7a b\u1ea1n. \u0110\u1ec3 ki\u1ec3m tra \u0111\u1ecba ch\u1ec9 IP n\u00e0y \u1edf \u0111\u00e2u, d\u01b0\u1edbi \u0111\u00e2y l\u00e0 3 c\u00e1ch:<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Kiem-tra-IP-Public-bang-cac-trang-web-truc-tuyen\"><\/span>Ki\u1ec3m tra IP Public b\u1eb1ng c\u00e1c trang web tr\u1ef1c tuy\u1ebfn<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u00e2y l\u00e0 c\u00e1ch nhanh v\u00e0 d\u1ec5 nh\u1ea5t. B\u1ea1n ch\u1ec9 c\u1ea7n m\u1edf tr\u00ecnh duy\u1ec7t v\u00e0 truy c\u1eadp m\u1ed9t trong c\u00e1c trang web d\u01b0\u1edbi \u0111\u00e2y:<\/p>\n<ul>\n<li><code>whatismyip.com<\/code><\/li>\n<li><code>ip-address.com<\/code><\/li>\n<li><code>whatismyipaddress.com<\/code><\/li>\n<\/ul>\n<p>Khi b\u1ea1n truy c\u1eadp, trang web s\u1ebd t\u1ef1 \u0111\u1ed9ng hi\u1ec3n th\u1ecb <strong>IP Public<\/strong> c\u1ee7a b\u1ea1n ngay tr\u00ean m\u00e0n h\u00ecnh.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Check-dia-chi-IP-Public-tren-Windows-bang-Command-Prompt\"><\/span>Check \u0111\u1ecba ch\u1ec9 IP Public tr\u00ean Windows b\u1eb1ng Command Prompt<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>N\u1ebfu b\u1ea1n \u0111ang s\u1eed d\u1ee5ng m\u00e1y t\u00ednh ch\u1ea1y <a href=\"https:\/\/interdata.vn\/blog\/he-dieu-hanh\/\">h\u1ec7 \u0111i\u1ec1u h\u00e0nh<\/a> Windows, b\u1ea1n c\u00f3 th\u1ec3 d\u00f9ng Command Prompt \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u1ecba ch\u1ec9 IP Public c\u1ee7a m\u00ecnh. Ch\u1ec9 c\u1ea7n m\u1edf Command Prompt v\u00e0 nh\u1eadp l\u1ec7nh &#8220;ipconfig&#8221;, sau \u0111\u00f3 b\u1ea1n s\u1ebd th\u1ea5y th\u00f4ng tin \u0111\u1ecba ch\u1ec9 IP.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Check-dia-chi-IP-Public-tren-MacOS-hoac-Linux-bang-Terminal\"><\/span>Check \u0111\u1ecba ch\u1ec9 IP Public tr\u00ean MacOS ho\u1eb7c Linux b\u1eb1ng Terminal<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u1ed1i v\u1edbi ng\u01b0\u1eddi d\u00f9ng MacOS ho\u1eb7c <a href=\"https:\/\/interdata.vn\/blog\/he-dieu-hanh-linux-la-gi\/\">Linux<\/a>, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng Terminal \u0111\u1ec3 ki\u1ec3m tra \u0111\u1ecba ch\u1ec9 IP Public. B\u1ea1n ch\u1ec9 c\u1ea7n m\u1edf Terminal v\u00e0 nh\u1eadp l\u1ec7nh &#8220;ifconfig&#8221;, sau \u0111\u00f3 h\u1ec7 th\u1ed1ng s\u1ebd hi\u1ec3n th\u1ecb th\u00f4ng tin IP c\u1ee7a b\u1ea1n.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cach-bao-mat-IP-Public-an-toan\"><\/span>C\u00e1ch b\u1ea3o m\u1eadt IP Public an to\u00e0n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>B\u1ea3o v\u1ec7 <strong>IP Public<\/strong> l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n cho m\u1ea1ng v\u00e0 d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Su-dung-Firewall-Tuong-lua\"><\/span>S\u1eed d\u1ee5ng Firewall (T\u01b0\u1eddng l\u1eeda)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Firewall<\/strong> l\u00e0 tuy\u1ebfn ph\u00f2ng th\u1ee7 \u0111\u1ea7u ti\u00ean v\u00e0 quan tr\u1ecdng nh\u1ea5t. N\u00f3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t b\u1ed9 l\u1ecdc, ki\u1ec3m so\u00e1t l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp ra v\u00e0o m\u1ea1ng c\u1ee7a b\u1ea1n d\u1ef1a tr\u00ean c\u00e1c quy t\u1eafc \u0111\u00e3 \u0111\u1ecbnh. M\u1ed9t <strong>firewall<\/strong> \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh t\u1ed1t s\u1ebd ng\u0103n ch\u1eb7n c\u00e1c truy c\u1eadp tr\u00e1i ph\u00e9p t\u1eeb b\u00ean ngo\u00e0i.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Cap-nhat-firmware-router\"><\/span>C\u1eadp nh\u1eadt firmware router<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>C\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t router th\u01b0\u1eddng xuy\u00ean ph\u00e1t h\u00e0nh c\u00e1c b\u1ea3n c\u1eadp nh\u1eadt firmware \u0111\u1ec3 v\u00e1 l\u1ed7i b\u1ea3o m\u1eadt v\u00e0 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t. H\u00e3y \u0111\u1ea3m b\u1ea3o router c\u1ee7a b\u1ea1n lu\u00f4n \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt phi\u00ean b\u1ea3n firmware m\u1edbi nh\u1ea5t.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Mat-khau-manh\"><\/span>M\u1eadt kh\u1ea9u m\u1ea1nh<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>H\u00e3y s\u1eed d\u1ee5ng m\u1eadt kh\u1ea9u m\u1ea1nh, ph\u1ee9c t\u1ea1p cho router v\u00e0 c\u00e1c thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i m\u1ea1ng c\u1ee7a b\u1ea1n. Tr\u00e1nh c\u00e1c m\u1eadt kh\u1ea9u m\u1eb7c \u0111\u1ecbnh ho\u1eb7c d\u1ec5 \u0111o\u00e1n \u0111\u1ec3 ng\u0103n ch\u1eb7n truy c\u1eadp tr\u00e1i ph\u00e9p.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"VPN-Virtual-Private-Network\"><\/span>VPN (Virtual Private Network)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>S\u1eed d\u1ee5ng d\u1ecbch v\u1ee5 <strong>VPN<\/strong> gi\u00fap m\u00e3 h\u00f3a l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp c\u1ee7a b\u1ea1n v\u00e0 che gi\u1ea5u <strong>IP Public<\/strong> th\u1ef1c t\u1ebf. Khi b\u1ea1n k\u1ebft n\u1ed1i qua VPN, c\u00e1c trang web v\u00e0 d\u1ecbch v\u1ee5 b\u1ea1n truy c\u1eadp s\u1ebd ch\u1ec9 th\u1ea5y \u0111\u1ecba ch\u1ec9 IP c\u1ee7a m\u00e1y ch\u1ee7 VPN, t\u0103ng c\u01b0\u1eddng quy\u1ec1n ri\u00eang t\u01b0 v\u00e0 b\u1ea3o m\u1eadt.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Hieu-ro-ve-Port-Forwarding\"><\/span>Hi\u1ec3u r\u00f5 v\u1ec1 Port Forwarding<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>N\u1ebfu b\u1ea1n c\u1ea7n m\u1edf c\u00e1c c\u1ed5ng (<a href=\"https:\/\/interdata.vn\/blog\/port-la-gi\/\">port<\/a>) \u0111\u1ec3 truy c\u1eadp d\u1ecbch v\u1ee5 t\u1eeb xa (v\u00ed d\u1ee5: camera an ninh), h\u00e3y hi\u1ec3u r\u00f5 v\u1ec1 <strong>port forwarding<\/strong>. Ch\u1ec9 m\u1edf nh\u1eefng c\u1ed5ng c\u1ea7n thi\u1ebft v\u00e0 c\u1ea5u h\u00ecnh ch\u00fang m\u1ed9t c\u00e1ch an to\u00e0n \u0111\u1ec3 tr\u00e1nh t\u1ea1o ra <a href=\"https:\/\/interdata.vn\/blog\/lo-hong-bao-mat-la-gi\/\">l\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt<\/a> kh\u00f4ng \u0111\u00e1ng c\u00f3.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cau-hoi-thuong-gap-ve-IP-Public-FAQs\"><\/span>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 IP Public (FAQs)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Khi t\u00ecm hi\u1ec3u v\u1ec1 IP Public, ng\u01b0\u1eddi d\u00f9ng th\u01b0\u1eddng c\u00f3 nhi\u1ec1u th\u1eafc m\u1eafc. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 nh\u1eefng c\u00e2u h\u1ecfi ph\u1ed5 bi\u1ebfn v\u00e0 c\u00e2u tr\u1ea3 l\u1eddi ng\u1eafn g\u1ecdn t\u1eeb InterData.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"IP-Public-co-thay-doi-khong\"><\/span>IP Public c\u00f3 thay \u0111\u1ed5i kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>N\u1ebfu b\u1ea1n s\u1eed d\u1ee5ng IP \u0111\u1ed9ng, IP Public c\u1ee7a b\u1ea1n s\u1ebd thay \u0111\u1ed5i. S\u1ef1 thay \u0111\u1ed5i n\u00e0y th\u01b0\u1eddng di\u1ec5n ra khi b\u1ea1n kh\u1edfi \u0111\u1ed9ng l\u1ea1i <a href=\"https:\/\/interdata.vn\/blog\/modem-la-gi\/\">modem<\/a>, ho\u1eb7c sau m\u1ed9t kho\u1ea3ng th\u1eddi gian thu\u00ea bao nh\u1ea5t \u0111\u1ecbnh. \u0110\u1ed1i v\u1edbi IP t\u0129nh, \u0111\u1ecba ch\u1ec9 n\u00e0y s\u1ebd kh\u00f4ng thay \u0111\u1ed5i.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"IP-Public-co-the-bi-lo-va-gay-nguy-hiem-khong\"><\/span>IP Public c\u00f3 th\u1ec3 b\u1ecb l\u1ed9 v\u00e0 g\u00e2y nguy hi\u1ec3m kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>V\u00ec IP Public l\u00e0 \u0111\u1ecba ch\u1ec9 &#8220;\u0111\u1ec3 ng\u1ecf&#8221; tr\u00ean Internet, k\u1ebb x\u1ea5u c\u00f3 th\u1ec3 l\u1ee3i d\u1ee5ng n\u00f3 \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng m\u1ea1ng, t\u00ecm ki\u1ebfm c\u00e1c l\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt. Tuy nhi\u00ean, n\u1ebfu b\u1ea1n tu\u00e2n th\u1ee7 c\u00e1c nguy\u00ean t\u1eafc b\u1ea3o m\u1eadt c\u01a1 b\u1ea3n nh\u01b0 d\u00f9ng t\u01b0\u1eddng l\u1eeda, c\u1eadp nh\u1eadt ph\u1ea7n m\u1ec1m, nguy c\u01a1 n\u00e0y s\u1ebd gi\u1ea3m \u0111i r\u1ea5t nhi\u1ec1u.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"IP-Public-co-phai-la-duy-nhat-tren-toan-cau-khong\"><\/span>IP Public c\u00f3 ph\u1ea3i l\u00e0 duy nh\u1ea5t tr\u00ean to\u00e0n c\u1ea7u kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u00fang v\u1eady, t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m nh\u1ea5t \u0111\u1ecbnh, m\u1ed7i \u0111\u1ecba ch\u1ec9 IP Public \u0111\u01b0\u1ee3c c\u1ea5p ph\u00e1t l\u00e0 duy nh\u1ea5t tr\u00ean to\u00e0n c\u1ea7u. \u0110i\u1ec1u n\u00e0y gi\u00fap c\u00e1c g\u00f3i d\u1eef li\u1ec7u lu\u00f4n t\u00ecm \u0111\u01b0\u1ee3c \u0111\u00fang \u0111\u00edch \u0111\u1ebfn tr\u00ean Internet.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Neu-toi-khong-co-IP-Public-toi-co-the-truy-cap-Internet-khong\"><\/span>N\u1ebfu t\u00f4i kh\u00f4ng c\u00f3 IP Public, t\u00f4i c\u00f3 th\u1ec3 truy c\u1eadp Internet kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>B\u1ea1n v\u1eabn c\u00f3 th\u1ec3 truy c\u1eadp Internet ngay c\u1ea3 khi thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n ch\u1ec9 c\u00f3 IP Private. Router c\u1ee7a b\u1ea1n s\u1ebd s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 NAT \u0111\u1ec3 chuy\u1ec3n \u0111\u1ed5i IP Private th\u00e0nh IP Public duy nh\u1ea5t c\u1ee7a nh\u00e0 b\u1ea1n khi b\u1ea1n g\u1eedi y\u00eau c\u1ea7u ra Internet.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Toi-co-the-an-IP-Public-cua-minh-khong\"><\/span>T\u00f4i c\u00f3 th\u1ec3 \u1ea9n IP Public c\u1ee7a m\u00ecnh kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>B\u1ea1n c\u00f3 th\u1ec3 &#8220;\u1ea9n&#8221; <strong>IP Public<\/strong> th\u1ef1c t\u1ebf c\u1ee7a m\u00ecnh b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c d\u1ecbch v\u1ee5 nh\u01b0 <strong>VPN<\/strong> ho\u1eb7c <strong><a href=\"https:\/\/interdata.vn\/blog\/proxy-server-la-gi\/\">Proxy Server<\/a><\/strong>. Khi s\u1eed d\u1ee5ng ch\u00fang, \u0111\u1ecba ch\u1ec9 IP m\u00e0 c\u00e1c trang web ho\u1eb7c d\u1ecbch v\u1ee5 nh\u00ecn th\u1ea5y s\u1ebd l\u00e0 \u0111\u1ecba ch\u1ec9 c\u1ee7a m\u00e1y ch\u1ee7 VPN\/Proxy, thay v\u00ec \u0111\u1ecba ch\u1ec9 IP th\u1ef1c c\u1ee7a b\u1ea1n.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"ISP-nha-cung-cap-dich-vu-Internet-co-cap-IP-Public-cho-moi-thue-bao-khong\"><\/span>ISP (nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 Internet) c\u00f3 c\u1ea5p IP Public cho m\u1ecdi thu\u00ea bao kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Kh\u00f4ng ph\u1ea3i t\u1ea5t c\u1ea3 c\u00e1c ISP \u0111\u1ec1u c\u1ea5p m\u1ed9t IP Public ri\u00eang cho m\u1ed7i thu\u00ea bao, \u0111\u1eb7c bi\u1ec7t l\u00e0 v\u1edbi c\u00e1c g\u00f3i c\u01b0\u1edbc gia \u0111\u00ecnh. M\u1ed9t s\u1ed1 ISP s\u1eed d\u1ee5ng CGNAT (Carrier-Grade NAT), n\u01a1i nhi\u1ec1u thu\u00ea bao s\u1ebd chia s\u1ebb chung m\u1ed9t IP Public. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 g\u00e2y kh\u00f3 kh\u0103n cho vi\u1ec7c thi\u1ebft l\u1eadp c\u00e1c d\u1ecbch v\u1ee5 c\u1ea7n truy c\u1eadp t\u1eeb xa nh\u01b0 camera ho\u1eb7c m\u00e1y ch\u1ee7 game. N\u1ebfu b\u1ea1n c\u1ea7n m\u1ed9t IP Public ri\u00eang, h\u00e3y h\u1ecfi nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 Internet c\u1ee7a m\u00ecnh.<\/p>\n<p><strong>InterData<\/strong> hy v\u1ecdng r\u1eb1ng b\u00e0i vi\u1ebft n\u00e0y \u0111\u00e3 cung c\u1ea5p cho b\u1ea1n m\u1ed9t c\u00e1i nh\u00ecn to\u00e0n di\u1ec7n v\u00e0 d\u1ec5 hi\u1ec3u v\u1ec1 <strong>IP Public l\u00e0 g\u00ec<\/strong>. Vi\u1ec7c n\u1eafm v\u1eefng ki\u1ebfn th\u1ee9c n\u00e0y kh\u00f4ng ch\u1ec9 gi\u00fap b\u1ea1n s\u1eed d\u1ee5ng Internet hi\u1ec7u qu\u1ea3 h\u01a1n m\u00e0 c\u00f2n bi\u1ebft c\u00e1ch b\u1ea3o v\u1ec7 th\u00f4ng tin v\u00e0 d\u1eef li\u1ec7u c\u1ee7a m\u00ecnh trong th\u1ebf gi\u1edbi s\u1ed1.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Khi l\u01b0\u1edbt web, ch\u01a1i game, hay xem phim tr\u1ef1c tuy\u1ebfn, b\u1ea1n c\u00f3 bao gi\u1edd t\u1ef1 h\u1ecfi l\u00e0m th\u1ebf n\u00e0o c\u00e1c thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 k\u1ebft n\u1ed1i v\u1edbi th\u1ebf gi\u1edbi Internet r\u1ed9ng l\u1edbn? C\u00e2u tr\u1ea3 l\u1eddi n\u1eb1m \u1edf m\u1ed9t kh\u00e1i ni\u1ec7m \u0111\u01a1n gi\u1ea3n nh\u01b0ng v\u00f4 c\u00f9ng quan tr\u1ecdng: IP Public. B\u00e0i vi\u1ebft n\u00e0y c\u1ee7a<\/p>\n","protected":false},"author":11,"featured_media":29795,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[151],"tags":[],"class_list":["post-15823","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mang"],"_links":{"self":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/15823","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/comments?post=15823"}],"version-history":[{"count":8,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/15823\/revisions"}],"predecessor-version":[{"id":33138,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/15823\/revisions\/33138"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media\/29795"}],"wp:attachment":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media?parent=15823"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/categories?post=15823"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/tags?post=15823"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}