{"id":35062,"date":"2024-11-06T09:44:36","date_gmt":"2024-11-06T02:44:36","guid":{"rendered":"http:\/\/jupitek.maudemo.vip\/index.php\/2024\/11\/06\/manage-firewall-rules\/"},"modified":"2026-05-14T10:36:52","modified_gmt":"2026-05-14T09:36:52","slug":"manage-firewall-rules","status":"publish","type":"post","link":"https:\/\/jupitek.maudemo.vip\/index.php\/2024\/11\/06\/manage-firewall-rules\/","title":{"rendered":"Qu\u1ea3n l\u00fd Firewall Rules"},"content":{"rendered":"<p>T\u01b0\u1eddng l\u1eeda \u0111\u00e1m m\u00e2y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1ecbnh c\u1ea5u h\u00ecnh v\u1edbi c\u1ea3 quy t\u1eafc _Inbound v\u00e0 _Outbound.<\/p>\n<p>Quy t\u1eafc g\u1eedi \u0111\u1ebfn gi\u1edbi h\u1ea1n c\u00e1c k\u1ebft n\u1ed1i m\u1ea1ng \u0111\u1ebfn v\u1edbi d\u1ecbch v\u1ee5 Linode d\u1ef1a tr\u00ean (c\u00e1c) c\u1ed5ng v\u00e0 ngu\u1ed3n b\u1ea1n \u0111\u1ecbnh c\u1ea5u h\u00ecnh.<\/p>\n<p>Quy t\u1eafc g\u1eedi \u0111i gi\u1edbi h\u1ea1n c\u00e1c k\u1ebft n\u1ed1i m\u1ea1ng g\u1eedi \u0111i \u0111\u1ebfn t\u1eeb d\u1ecbch v\u1ee5 Linode d\u1ef1a tr\u00ean (c\u00e1c) c\u1ed5ng v\u00e0 \u0111\u00edch \u0111\u1ebfn m\u00e0 b\u1ea1n \u0111\u1ecbnh c\u1ea5u h\u00ecnh.<\/p>\n<p class=\"has-background\" style=\"background-color:#c5ece5\">C\u00e1c quy t\u1eafc g\u1eedi \u0111\u1ebfn v\u00e0 g\u1eedi \u0111i \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho Phi\u00ean b\u1ea3n \u0111i\u1ec7n to\u00e1n. Ch\u1ec9 c\u00e1c quy t\u1eafc g\u1eedi \u0111\u1ebfn m\u1edbi \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho NodeBalancers<\/p>\n<h2 id=\"h-quy-t\u1eafc-d\u01b0\u1ee3c-xac-d\u1ecbnh-tr\u01b0\u1edbc\">Quy t\u1eafc \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc<\/h2>\n<p>Tr\u00ecnh qu\u1ea3n l\u00fd \u0111\u00e1m m\u00e2y cung c\u1ea5p danh s\u00e1ch c\u00e1c quy t\u1eafc \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc m\u00e0 b\u1ea1n c\u00f3 th\u1ec3 th\u00eam v\u00e0o t\u01b0\u1eddng l\u1eeda c\u1ee7a m\u00ecnh. C\u00e1c quy t\u1eafc \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc h\u1ed7 tr\u1ee3 c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng m\u1ea1ng ph\u1ed5 bi\u1ebfn v\u00e0 cung c\u1ea5p n\u1ec1n t\u1ea3ng d\u1ec5 d\u00e0ng \u0111\u1ec3 b\u1eaft \u0111\u1ea7u v\u1edbi T\u01b0\u1eddng l\u1eeda tr\u00ean \u0111\u00e1m m\u00e2y. V\u00ec b\u1ea1n c\u00f3 th\u1ec3 ch\u1ec9nh s\u1eeda b\u1ea5t k\u1ef3 quy t\u1eafc n\u00e0o \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho t\u01b0\u1eddng l\u1eeda n\u00ean b\u1ea1n c\u00f3 th\u1ec3 s\u1eeda \u0111\u1ed5i quy t\u1eafc \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc \u0111\u1ec3 ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng v\u00e0 y\u00eau c\u1ea7u c\u1ee7a ri\u00eang b\u1ea1n.<\/p>\n<h2>Xem quy t\u1eafc<\/h2>\n<p>\u0110\u0103ng nh\u1eadp v\u00e0o Tr\u00ecnh qu\u1ea3n l\u00fd \u0111\u00e1m m\u00e2y v\u00e0 ch\u1ecdn T\u01b0\u1eddng l\u1eeda t\u1eeb menu \u0111i\u1ec1u h\u01b0\u1edbng.<\/p>\n<p>T\u1eeb trang danh s\u00e1ch T\u01b0\u1eddng l\u1eeda, nh\u1ea5p v\u00e0o T\u01b0\u1eddng l\u1eeda tr\u00ean \u0111\u00e1m m\u00e2y m\u00e0 b\u1ea1n mu\u1ed1n xem ho\u1eb7c s\u1eeda \u0111\u1ed5i.<\/p>\n<p>C\u00e1c quy t\u1eafc \u0111\u01b0\u1ee3c t\u00e1ch th\u00e0nh c\u00e1c ph\u1ea7n quy t\u1eafc Inbound v\u00e0 Outbound.<\/p>\n<h2>Th\u00eam quy t\u1eafc<\/h2>\n<p>\u0110\u0103ng nh\u1eadp v\u00e0o Tr\u00ecnh qu\u1ea3n l\u00fd \u0111\u00e1m m\u00e2y v\u00e0 ch\u1ecdn T\u01b0\u1eddng l\u1eeda t\u1eeb menu \u0111i\u1ec1u h\u01b0\u1edbng.<\/p>\n<p>T\u1eeb trang danh s\u00e1ch T\u01b0\u1eddng l\u1eeda, nh\u1ea5p v\u00e0o t\u01b0\u1eddng l\u1eeda m\u00e0 b\u1ea1n mu\u1ed1n th\u00eam quy t\u1eafc m\u1edbi v\u00e0o. Thao t\u00e1c n\u00e0y s\u1ebd \u0111\u01b0a b\u1ea1n \u0111\u1ebfn trang Quy t\u1eafc c\u1ee7a t\u01b0\u1eddng l\u1eeda.<\/p>\n<p>Tr\u00ean trang Quy t\u1eafc, ch\u1ecdn h\u00e0nh vi m\u1eb7c \u0111\u1ecbnh cho c\u1ea3 l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp v\u00e0o v\u00e0 ra b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng menu th\u1ea3 xu\u1ed1ng Ch\u00ednh s\u00e1ch g\u1eedi \u0111\u1ebfn v\u00e0 Ch\u00ednh s\u00e1ch g\u1eedi \u0111i. Ch\u1ea5p nh\u1eadn cho ph\u00e9p t\u1ea5t c\u1ea3 l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp ngo\u1ea1i tr\u1eeb nh\u1eefng l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh trong c\u00e1c quy t\u1eafc \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea v\u00e0 Th\u1ea3 t\u1eeb ch\u1ed1i t\u1ea5t c\u1ea3 l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp ngo\u1ea1i tr\u1eeb nh\u1eefng l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh trong quy t\u1eafc.<\/p>\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" width=\"1024\" height=\"507\" src=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-1024x507-1.png\" alt=\"\" class=\"wp-image-1985\" srcset=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-1024x507-1.png 1024w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-300x149-1.png 300w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-768x380-1.png 768w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-1536x761-1.png 1536w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-2048x1015-1.png 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<p>Nh\u1ea5p v\u00e0o li\u00ean k\u1ebft Th\u00eam quy t\u1eafc v\u00e0o\/ra (nh\u1ea5p v\u00e0o li\u00ean k\u1ebft th\u00edch h\u1ee3p cho lo\u1ea1i Quy t\u1eafc b\u1ea1n mu\u1ed1n th\u00eam). Ng\u0103n Th\u00eam quy t\u1eafc v\u00e0o\/ra xu\u1ea5t hi\u1ec7n.<\/p>\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" width=\"1024\" height=\"507\" src=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-1-1024x507-1.png\" alt=\"\" class=\"wp-image-1986\" srcset=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-1-1024x507-1.png 1024w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-1-300x149-1.png 300w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-1-768x380-1.png 768w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-1-1536x761-1.png 1536w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-1-2048x1015-1.png 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<p>Cung c\u1ea5p c\u00e1c c\u1ea5u h\u00ecnh Quy t\u1eafc sau:<\/p>\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" src=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-2-2.png\" alt=\"\" class=\"wp-image-1987\" width=\"841\" height=\"725\" srcset=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-2-2.png 1000w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-2-300x259-1.png 300w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-2-768x663-1.png 768w\" sizes=\"auto, (max-width: 841px) 100vw, 841px\" \/><\/figure>\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" width=\"1006\" height=\"257\" src=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-3-2.png\" alt=\"\" class=\"wp-image-1988\" srcset=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-3-2.png 1006w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-3-300x77-1.png 300w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-3-768x196-1.png 768w\" sizes=\"auto, (max-width: 1006px) 100vw, 1006px\" \/><\/figure>\n<div class=\"is-layout-constrained wp-block-group has-background\" style=\"background-color:#caf6e5\">\n<div class=\"wp-block-group__inner-container\">\n<p>Khi \u00e1p d\u1ee5ng \u0111\u1ecba ch\u1ec9 IP ri\u00eang l\u1ebb ho\u1eb7c ph\u1ea1m vi IP cho tr\u01b0\u1eddng&nbsp;ho\u1eb7c&nbsp;, c\u00e1c \u0111\u1ecba ch\u1ec9 ph\u1ea3i lu\u00f4n h\u1ee3p l\u1ec7 v\u00e0 \u0111\u01b0\u1ee3c \u0111\u1ecbnh d\u1ea1ng \u0111\u00fang b\u1eb1ng&nbsp;<a target=\"_blank\" href=\"https:\/\/en.wikipedia.org\/wiki\/Classless_Inter-Domain_Routing\" rel=\"noreferrer noopener\">k\u00fd hi\u1ec7u CIDR<\/a>&nbsp;. Ph\u1ea1m vi \u0111\u1ecba ch\u1ec9 IP \u0111\u01b0\u1ee3c \u0111\u1ecbnh d\u1ea1ng kh\u00e1c v\u1edbi ph\u1ea1m vi s\u1ed1 c\u1ed5ng. Thay v\u00ec s\u1eed d\u1ee5ng ph\u1ea1m vi s\u1ed1 c\u00f3 d\u1ea5u g\u1ea1ch n\u1ed1i, k\u00fd hi\u1ec7u CIDR \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ch\u1ec9 \u0111\u1ecbnh ti\u1ec1n t\u1ed1 m\u1ea1ng v\u00e0 s\u1ed1 bit trong ti\u1ec1n t\u1ed1. Sau \u0111\u00e2y l\u00e0 c\u00e1c v\u00ed d\u1ee5 v\u1ec1 ph\u1ea1m vi IPv4 v\u00e0 IPv6 h\u1ee3p l\u1ec7:<code>source<\/code><code>destination<\/code><a target=\"_blank\" href=\"https:\/\/en.wikipedia.org\/wiki\/Classless_Inter-Domain_Routing\" rel=\"noreferrer noopener\"><\/a><\/p>\n<ul>\n<li><code>192.0.2.0\/24<\/code><\/li>\n<li><code>198.51.0.0\/16<\/code><\/li>\n<li><code>2001:db8:1234::\/48<\/code><\/li>\n<\/ul>\n<p>Trong v\u00ed d\u1ee5 \u0111\u1ea7u ti\u00ean \u1edf tr\u00ean, vi\u1ec7c s\u1eed d\u1ee5ng ph\u1ea1m vi&nbsp;s\u1ebd \u00e1p d\u1ee5ng quy t\u1eafc cho t\u1ea5t c\u1ea3 c\u00e1c \u0111\u1ecba ch\u1ec9 IP t\u1eeb&nbsp;\u0111\u1ebfn&nbsp;.<code>192.0.2.0\/24<\/code><code>192.0.2.1<\/code><code>192.0.2.254<\/code><\/p>\n<p>N\u1ebfu b\u1ea1n c\u1ea7n ch\u1ec9 \u0111\u1ecbnh m\u1ed9t \u0111\u1ecba ch\u1ec9 IP duy nh\u1ea5t, h\u00e3y s\u1eed d\u1ee5ng \/32 khi ch\u1ec9 \u0111\u1ecbnh ph\u1ea1m vi IP c\u1ee7a b\u1ea1n. V\u00ed d\u1ee5,&nbsp;bi\u1ec3u th\u1ecb m\u1ed9t \u0111\u1ecba ch\u1ec9 IP duy nh\u1ea5t.<code>192.0.2.1\/32<\/code><\/p>\n<\/div>\n<\/div>\n<p>Nh\u1ea5p v\u00e0o&nbsp;<strong>Th\u00eam quy t\u1eafc<\/strong>&nbsp;\u0111\u1ec3 th\u00eam quy t\u1eafc m\u1edbi v\u00e0o T\u01b0\u1eddng l\u1eeda n\u00e0y. N\u1ebfu b\u1ea1n mu\u1ed1n th\u00eam b\u1ea5t k\u1ef3 quy t\u1eafc b\u1ed5 sung n\u00e0o, h\u00e3y l\u1eb7p l\u1ea1i quy tr\u00ecnh \u0111\u01b0\u1ee3c n\u00eau trong ph\u1ea7n n\u00e0y.<\/p>\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" width=\"475\" height=\"798\" src=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-4-1.png\" alt=\"\" class=\"wp-image-1989\" srcset=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-4-1.png 475w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-4-179x300-1.png 179w\" sizes=\"auto, (max-width: 475px) 100vw, 475px\" \/><\/figure>\n<p>Khi b\u1ea1n ho\u00e0n t\u1ea5t vi\u1ec7c th\u00eam c\u00e1c quy t\u1eafc T\u01b0\u1eddng l\u1eeda m\u1edbi, h\u00e3y xem l\u1ea1i ch\u00fang tr\u00ean trang&nbsp;<strong>Quy t\u1eafc<\/strong>&nbsp;m\u00e0 b\u1ea1n \u0111\u01b0\u1ee3c chuy\u1ec3n h\u01b0\u1edbng \u0111\u1ebfn theo m\u1eb7c \u0111\u1ecbnh. C\u00e1c quy t\u1eafc T\u01b0\u1eddng l\u1eeda \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng theo th\u1ee9 t\u1ef1 t\u1eeb tr\u00ean xu\u1ed1ng d\u01b0\u1edbi khi ch\u00fang xu\u1ea5t hi\u1ec7n tr\u00ean trang n\u00e0y. N\u1ebfu b\u1ea1n mu\u1ed1n s\u1eafp x\u1ebfp l\u1ea1i c\u00e1c quy t\u1eafc n\u00e0y, h\u00e3y k\u00e9o v\u00e0 th\u1ea3 b\u1ea5t k\u1ef3 h\u00e0ng n\u00e0o v\u00e0o v\u1ecb tr\u00ed mong mu\u1ed1n c\u1ee7a ch\u00fang.<\/p>\n<p>Khi b\u1ea1n ho\u00e0n t\u1ea5t vi\u1ec7c xem x\u00e9t c\u00e1c quy t\u1eafc T\u01b0\u1eddng l\u1eeda m\u1edbi, h\u00e3y nh\u1ea5p v\u00e0o n\u00fat&nbsp;<strong>L\u01b0u thay \u0111\u1ed5i<\/strong>&nbsp;tr\u00ean trang&nbsp;<strong>Quy t\u1eafc<\/strong><\/p>\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" width=\"1024\" height=\"583\" src=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-5-1024x583-1.png\" alt=\"\" class=\"wp-image-1990\" srcset=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-5-1024x583-1.png 1024w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-5-300x171-1.png 300w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-5-768x437-1.png 768w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-5-1536x875-1.png 1536w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-5-2048x1166-1.png 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<h1>Ch\u1ec9nh s\u1eeda m\u1ed9t quy t\u1eafc<a href=\"https:\/\/techdocs.akamai.com\/cloud-computing\/docs\/manage-firewall-rules#edit-a-rule\"><\/a><\/h1>\n<p>Th\u1ef1c hi\u1ec7n theo c\u00e1c b\u01b0\u1edbc trong ph\u1ea7n n\u00e0y \u0111\u1ec3 ch\u1ec9nh s\u1eeda c\u00e1c Quy t\u1eafc T\u01b0\u1eddng l\u1eeda t\u00f9y ch\u1ec9nh v\u00e0 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc.<\/p>\n<p>\u0110\u0103ng nh\u1eadp v\u00e0o&nbsp;<a target=\"_blank\" href=\"https:\/\/cloud.linode.com\/\" rel=\"noreferrer noopener\">Cloud Manager<\/a>&nbsp;v\u00e0 ch\u1ecdn&nbsp;<strong>T\u01b0\u1eddng l\u1eeda<\/strong>&nbsp;t\u1eeb menu \u0111i\u1ec1u h\u01b0\u1edbng.<\/p>\n<p>T\u1eeb trang danh s\u00e1ch&nbsp;<strong>T\u01b0\u1eddng l\u1eeda<\/strong>&nbsp;, nh\u1ea5p v\u00e0o T\u01b0\u1eddng l\u1eeda c\u00f3 quy t\u1eafc b\u1ea1n mu\u1ed1n ch\u1ec9nh s\u1eeda. Thao t\u00e1c n\u00e0y s\u1ebd \u0111\u01b0a b\u1ea1n \u0111\u1ebfn trang&nbsp;<strong>Quy t\u1eafc<\/strong>&nbsp;c\u1ee7a T\u01b0\u1eddng l\u1eeda .<\/p>\n<p>Nh\u1ea5p v\u00e0o n\u00fat&nbsp;<strong>Ch\u1ec9nh s\u1eeda<\/strong>&nbsp;t\u01b0\u01a1ng \u1ee9ng v\u1edbi quy t\u1eafc b\u1ea1n mu\u1ed1n ch\u1ec9nh s\u1eeda.<\/p>\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" width=\"1024\" height=\"584\" src=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-6-1024x584-1.png\" alt=\"\" class=\"wp-image-1991\" srcset=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-6-1024x584-1.png 1024w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-6-300x171-1.png 300w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-6-768x438-1.png 768w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-6-1536x875-1.png 1536w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-6-2048x1167-1.png 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<p>T\u1eeb ng\u0103n&nbsp;<strong>Ch\u1ec9nh s\u1eeda quy t\u1eafc<\/strong>&nbsp;, h\u00e3y c\u1eadp nh\u1eadt c\u1ea5u h\u00ecnh c\u1ee7a quy t\u1eafc khi c\u1ea7n.<\/p>\n<p>Nh\u1ea5p v\u00e0o n\u00fat&nbsp;<strong>Th\u00eam thay \u0111\u1ed5i<\/strong>&nbsp;\u0111\u1ec3 l\u01b0u thay \u0111\u1ed5i c\u1ee7a b\u1ea1n v\u00e0 \u00e1p d\u1ee5ng ch\u00fang v\u00e0o quy t\u1eafc. N\u1ebfu b\u1ea1n mu\u1ed1n ch\u1ec9nh s\u1eeda b\u1ea5t k\u1ef3 quy t\u1eafc b\u1ed5 sung n\u00e0o, h\u00e3y l\u1eb7p l\u1ea1i quy tr\u00ecnh \u0111\u01b0\u1ee3c n\u00eau trong ph\u1ea7n n\u00e0y.<\/p>\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" width=\"475\" height=\"876\" src=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-7-1.png\" alt=\"\" class=\"wp-image-1992\" srcset=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-7-1.png 475w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-7-163x300-1.png 163w\" sizes=\"auto, (max-width: 475px) 100vw, 475px\" \/><\/figure>\n<p>Khi b\u1ea1n ho\u00e0n t\u1ea5t vi\u1ec7c ch\u1ec9nh s\u1eeda c\u00e1c quy t\u1eafc T\u01b0\u1eddng l\u1eeda, h\u00e3y nh\u1ea5p v\u00e0o n\u00fat&nbsp;<strong>L\u01b0u thay \u0111\u1ed5i<\/strong>&nbsp;tr\u00ean trang&nbsp;<strong>Quy t\u1eafc<\/strong>&nbsp;\u0111\u1ec3 nh\u1eefng thay \u0111\u1ed5i \u0111\u00f3 c\u00f3 hi\u1ec7u l\u1ef1c.<\/p>\n<h1>X\u00f3a m\u1ed9t quy t\u1eafc<a href=\"https:\/\/techdocs.akamai.com\/cloud-computing\/docs\/manage-firewall-rules#delete-a-rule\"><\/a><\/h1>\n<ol>\n<li>\u0110\u0103ng nh\u1eadp v\u00e0o&nbsp;<a target=\"_blank\" href=\"https:\/\/cloud.linode.com\/\" rel=\"noreferrer noopener\">Cloud Manager<\/a>&nbsp;v\u00e0 ch\u1ecdn&nbsp;<strong>T\u01b0\u1eddng l\u1eeda<\/strong>&nbsp;t\u1eeb menu \u0111i\u1ec1u h\u01b0\u1edbng.<\/li>\n<li>T\u1eeb trang danh s\u00e1ch&nbsp;<strong>T\u01b0\u1eddng l\u1eeda<\/strong>&nbsp;, h\u00e3y nh\u1ea5p v\u00e0o T\u01b0\u1eddng l\u1eeda c\u00f3 quy t\u1eafc b\u1ea1n mu\u1ed1n x\u00f3a. Thao t\u00e1c n\u00e0y s\u1ebd \u0111\u01b0a b\u1ea1n \u0111\u1ebfn trang&nbsp;<strong>Quy t\u1eafc<\/strong>&nbsp;c\u1ee7a T\u01b0\u1eddng l\u1eeda .<\/li>\n<li>Nh\u1ea5p v\u00e0o&nbsp;<strong>X\u00f3a<\/strong>&nbsp;t\u01b0\u01a1ng \u1ee9ng v\u1edbi quy t\u1eafc m\u00e0 b\u1ea1n mu\u1ed1n x\u00f3a. N\u1ebfu b\u1ea1n mu\u1ed1n x\u00f3a b\u1ea5t k\u1ef3 quy t\u1eafc b\u1ed5 sung n\u00e0o, h\u00e3y l\u1eb7p l\u1ea1i quy tr\u00ecnh \u0111\u01b0\u1ee3c n\u00eau trong ph\u1ea7n n\u00e0y.<\/li>\n<li>Khi ho\u00e0n t\u1ea5t, h\u00e3y nh\u1ea5p v\u00e0o n\u00fat&nbsp;<strong>L\u01b0u thay \u0111\u1ed5i<\/strong>&nbsp;tr\u00ean trang&nbsp;<strong>Quy t\u1eafc<\/strong>&nbsp;.<\/li>\n<\/ol>\n<p class=\"has-background\" style=\"background-color:#d7f9eb\">B\u1ea5t k\u1ef3 vi\u1ec7c x\u00f3a quy t\u1eafc n\u00e0o c\u0169ng kh\u00f4ng c\u00f3 hi\u1ec7u l\u1ef1c cho \u0111\u1ebfn khi b\u1ea1n&nbsp;<strong>L\u01b0u thay \u0111\u1ed5i<\/strong>&nbsp;v\u00e0o T\u01b0\u1eddng l\u1eeda.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>T\u01b0\u1eddng l\u1eeda \u0111\u00e1m m\u00e2y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1ecbnh c\u1ea5u h\u00ecnh v\u1edbi c\u1ea3 quy t\u1eafc _Inbound v\u00e0 _Outbound. Quy t\u1eafc g\u1eedi \u0111\u1ebfn gi\u1edbi h\u1ea1n c\u00e1c k\u1ebft n\u1ed1i m\u1ea1ng \u0111\u1ebfn v\u1edbi d\u1ecbch v\u1ee5 Linode d\u1ef1a tr\u00ean (c\u00e1c) c\u1ed5ng v\u00e0 ngu\u1ed3n b\u1ea1n \u0111\u1ecbnh c\u1ea5u h\u00ecnh. Quy t\u1eafc g\u1eedi \u0111i gi\u1edbi h\u1ea1n c\u00e1c k\u1ebft n\u1ed1i m\u1ea1ng g\u1eedi \u0111i \u0111\u1ebfn<\/p>\n","protected":false},"author":1,"featured_media":36336,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[117],"tags":[],"class_list":["post-35062","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-linux-cloud-firewall"],"_links":{"self":[{"href":"https:\/\/jupitek.maudemo.vip\/index.php\/wp-json\/wp\/v2\/posts\/35062","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jupitek.maudemo.vip\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jupitek.maudemo.vip\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jupitek.maudemo.vip\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jupitek.maudemo.vip\/index.php\/wp-json\/wp\/v2\/comments?post=35062"}],"version-history":[{"count":1,"href":"https:\/\/jupitek.maudemo.vip\/index.php\/wp-json\/wp\/v2\/posts\/35062\/revisions"}],"predecessor-version":[{"id":36337,"href":"https:\/\/jupitek.maudemo.vip\/index.php\/wp-json\/wp\/v2\/posts\/35062\/revisions\/36337"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jupitek.maudemo.vip\/index.php\/wp-json\/wp\/v2\/media\/36336"}],"wp:attachment":[{"href":"https:\/\/jupitek.maudemo.vip\/index.php\/wp-json\/wp\/v2\/media?parent=35062"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jupitek.maudemo.vip\/index.php\/wp-json\/wp\/v2\/categories?post=35062"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jupitek.maudemo.vip\/index.php\/wp-json\/wp\/v2\/tags?post=35062"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}