{"id":477596,"date":"2023-08-09T09:17:42","date_gmt":"2023-08-09T09:17:42","guid":{"rendered":""},"modified":"2023-09-05T11:15:01","modified_gmt":"2023-09-05T11:15:01","slug":"ingress-filtering","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/ingress-filtering\/","title":{"rendered":"L\u1ecdc x\u00e2m nh\u1eadp"},"content":{"rendered":"<h2>Gi\u1edbi thi\u1ec7u<\/h2>\n<p>L\u1ecdc x\u00e2m nh\u1eadp l\u00e0 m\u1ed9t k\u1ef9 thu\u1eadt b\u1ea3o m\u1eadt m\u1ea1ng quan tr\u1ecdng nh\u1eb1m b\u1ea3o v\u1ec7 m\u1ea1ng v\u00e0 ng\u01b0\u1eddi d\u00f9ng kh\u1ecfi l\u01b0u l\u01b0\u1ee3ng \u0111\u1ed9c h\u1ea1i v\u00e0 truy c\u1eadp tr\u00e1i ph\u00e9p. N\u00f3 \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t h\u00e0ng r\u00e0o ph\u00f2ng th\u1ee7 m\u1ea1nh m\u1ebd cho c\u00e1c doanh nghi\u1ec7p, t\u1ed5 ch\u1ee9c v\u00e0 th\u1eadm ch\u00ed c\u1ea3 c\u00e1 nh\u00e2n, b\u1ea3o v\u1ec7 h\u1ecd kh\u1ecfi c\u00e1c m\u1ed1i \u0111e d\u1ecda ti\u1ec1m \u1ea9n v\u00e0 \u0111\u1ea3m b\u1ea3o m\u1ed9t m\u00f4i tr\u01b0\u1eddng tr\u1ef1c tuy\u1ebfn an to\u00e0n. Trong b\u00e0i vi\u1ebft to\u00e0n di\u1ec7n n\u00e0y, ch\u00fang t\u00f4i s\u1ebd \u0111i s\u00e2u v\u00e0o l\u1ecbch s\u1eed, ch\u1ee9c n\u0103ng, lo\u1ea1i v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ed9 l\u1ecdc Ingress, kh\u00e1m ph\u00e1 t\u1ea7m quan tr\u1ecdng c\u1ee7a n\u00f3 trong l\u0129nh v\u1ef1c b\u1ea3o m\u1eadt internet.<\/p>\n<h2>Ngu\u1ed3n g\u1ed1c v\u00e0 s\u1ef1 \u0111\u1ec1 c\u1eadp s\u1edbm c\u1ee7a l\u1ecdc x\u00e2m nh\u1eadp<\/h2>\n<p>Kh\u00e1i ni\u1ec7m l\u1ecdc x\u00e2m nh\u1eadp l\u1ea7n \u0111\u1ea7u ti\u00ean xu\u1ea5t hi\u1ec7n v\u00e0o nh\u1eefng ng\u00e0y \u0111\u1ea7u c\u1ee7a Internet khi c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u1ea1ng ng\u00e0y c\u00e0ng ph\u00e1t tri\u1ec3n b\u1eaft \u0111\u1ea7u g\u1eb7p ph\u1ea3i nh\u1eefng th\u00e1ch th\u1ee9c v\u1ec1 b\u1ea3o m\u1eadt. Vi\u1ec7c \u0111\u1ec1 c\u1eadp s\u1edbm nh\u1ea5t v\u1ec1 l\u1ecdc Ingress c\u00f3 th\u1ec3 b\u1eaft ngu\u1ed3n t\u1eeb \u0111\u1ea7u nh\u1eefng n\u0103m 1980 khi Jon Postel v\u00e0 nh\u00f3m c\u1ee7a \u00f4ng \u0111\u1ec1 xu\u1ea5t \u00fd t\u01b0\u1edfng l\u1ecdc g\u00f3i trong c\u00f4ng vi\u1ec7c c\u1ee7a h\u1ecd v\u1ec1 Giao th\u1ee9c th\u00f4ng b\u00e1o \u0111i\u1ec1u khi\u1ec3n Internet (ICMP). \u00dd t\u01b0\u1edfng n\u00e0y \u0111\u00e3 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111\u1ed9ng l\u1ef1c khi internet m\u1edf r\u1ed9ng v\u00e0 nhu c\u1ea7u b\u1ea3o v\u1ec7 t\u00e0i nguy\u00ean m\u1ea1ng c\u0169ng nh\u01b0 ng\u01b0\u1eddi d\u00f9ng tr\u1edf n\u00ean r\u00f5 r\u00e0ng h\u01a1n.<\/p>\n<h2>Th\u00f4ng tin chi ti\u1ebft v\u1ec1 L\u1ecdc \u0111\u1ea7u v\u00e0o<\/h2>\n<p>L\u1ecdc x\u00e2m nh\u1eadp, c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 l\u1ecdc \u0111\u1ea7u v\u00e0o ho\u1eb7c l\u1ecdc g\u1eedi \u0111\u1ebfn, l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o m\u1eadt m\u1ea1ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 xem x\u00e9t k\u1ef9 l\u01b0\u1ee1ng c\u00e1c g\u00f3i d\u1eef li\u1ec7u \u0111\u1ebfn \u1edf c\u00e1c bi\u00ean c\u1ee7a m\u1ea1ng. N\u00f3 li\u00ean quan \u0111\u1ebfn vi\u1ec7c \u0111\u00e1nh gi\u00e1 ngu\u1ed3n, \u0111\u00edch v\u00e0 n\u1ed9i dung c\u1ee7a c\u00e1c g\u00f3i \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh xem ch\u00fang c\u00f3 \u0111\u00e1p \u1ee9ng c\u00e1c ch\u00ednh s\u00e1ch b\u1ea3o m\u1eadt \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc v\u00e0 c\u00f3 \u0111\u01b0\u1ee3c ph\u00e9p v\u00e0o m\u1ea1ng hay kh\u00f4ng.<\/p>\n<h2>C\u1ea5u tr\u00fac b\u00ean trong v\u00e0 ch\u1ee9c n\u0103ng c\u1ee7a b\u1ed9 l\u1ecdc x\u00e2m nh\u1eadp<\/h2>\n<p>M\u1ee5c \u0111\u00edch ch\u00ednh c\u1ee7a l\u1ecdc Ingress l\u00e0 ng\u0103n ch\u1eb7n l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp \u0111\u1ed9c h\u1ea1i x\u00e2m nh\u1eadp v\u00e0o m\u1ea1ng trong khi cho ph\u00e9p l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp h\u1ee3p ph\u00e1p \u0111i qua m\u00e0 kh\u00f4ng b\u1ecb c\u1ea3n tr\u1edf. \u0110i\u1ec1u n\u00e0y \u0111\u1ea1t \u0111\u01b0\u1ee3c th\u00f4ng qua m\u1ed9t lo\u1ea1t c\u00e1c b\u01b0\u1edbc:<\/p>\n<ol>\n<li>\n<p><strong>Ki\u1ec3m tra g\u00f3i<\/strong>: C\u00e1c g\u00f3i \u0111\u1ebfn ph\u1ea3i \u0111\u01b0\u1ee3c ki\u1ec3m tra k\u1ef9 l\u01b0\u1ee1ng, ki\u1ec3m tra \u0111\u1ecba ch\u1ec9 IP ngu\u1ed3n, \u0111\u1ecba ch\u1ec9 IP \u0111\u00edch, s\u1ed1 c\u1ed5ng v\u00e0 n\u1ed9i dung t\u1ea3i tr\u1ecdng.<\/p>\n<\/li>\n<li>\n<p><strong>Danh s\u00e1ch ki\u1ec3m so\u00e1t truy c\u1eadp (ACL)<\/strong>: ACL \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c quy t\u1eafc v\u00e0 ch\u00ednh s\u00e1ch l\u1ecdc. C\u00e1c danh s\u00e1ch n\u00e0y bao g\u1ed3m c\u00e1c quy t\u1eafc ch\u1ec9 \u0111\u1ecbnh g\u00f3i n\u00e0o \u0111\u01b0\u1ee3c ph\u00e9p v\u00e0 g\u00f3i n\u00e0o b\u1ecb t\u1eeb ch\u1ed1i d\u1ef1a tr\u00ean \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a ch\u00fang.<\/p>\n<\/li>\n<li>\n<p><strong>Ki\u1ec3m tra g\u00f3i tr\u1ea1ng th\u00e1i (SPI)<\/strong>: C\u00e1c k\u1ef9 thu\u1eadt l\u1ecdc x\u00e2m nh\u1eadp n\u00e2ng cao h\u01a1n s\u1eed d\u1ee5ng SPI \u0111\u1ec3 ph\u00e2n t\u00edch ng\u1eef c\u1ea3nh c\u1ee7a g\u00f3i trong phi\u00ean \u0111ang di\u1ec5n ra. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c g\u00f3i kh\u00f4ng ch\u1ec9 \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 ri\u00eang l\u1ebb m\u00e0 c\u00f2n trong b\u1ed1i c\u1ea3nh k\u1ebft n\u1ed1i m\u00e0 ch\u00fang thu\u1ed9c v\u1ec1.<\/p>\n<\/li>\n<\/ol>\n<h2>Ph\u00e2n t\u00edch c\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a L\u1ecdc x\u00e2m nh\u1eadp<\/h2>\n<p>L\u1ecdc x\u00e2m nh\u1eadp mang l\u1ea1i m\u1ed9t s\u1ed1 l\u1ee3i \u00edch thi\u1ebft y\u1ebfu, g\u00f3p ph\u1ea7n n\u00e2ng cao hi\u1ec7u su\u1ea5t v\u00e0 b\u1ea3o m\u1eadt m\u1ea1ng:<\/p>\n<ul>\n<li>\n<p><strong>Gi\u1ea3m thi\u1ec3u DDoS<\/strong>: L\u1ecdc x\u00e2m nh\u1eadp gi\u00fap gi\u1ea3m thi\u1ec3u c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5 ph\u00e2n t\u00e1n (DDoS) b\u1eb1ng c\u00e1ch ch\u1eb7n l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp t\u1eeb c\u00e1c ngu\u1ed3n \u0111\u1ed9c h\u1ea1i \u0111\u00e3 bi\u1ebft.<\/p>\n<\/li>\n<li>\n<p><strong>Ph\u00f2ng ch\u1ed1ng gi\u1ea3 m\u1ea1o IP<\/strong>: B\u1eb1ng c\u00e1ch ki\u1ec3m tra \u0111\u1ecba ch\u1ec9 IP ngu\u1ed3n, t\u00ednh n\u0103ng l\u1ecdc Ingress ng\u0103n ch\u1eb7n vi\u1ec7c gi\u1ea3 m\u1ea1o IP, m\u1ed9t k\u1ef9 thu\u1eadt \u0111\u01b0\u1ee3c k\u1ebb t\u1ea5n c\u00f4ng s\u1eed d\u1ee5ng \u0111\u1ec3 ng\u1ee5y trang danh t\u00ednh c\u1ee7a ch\u00fang.<\/p>\n<\/li>\n<li>\n<p><strong>Ng\u0103n ch\u1eb7n truy c\u1eadp tr\u00e1i ph\u00e9p<\/strong>: L\u1ecdc x\u00e2m nh\u1eadp ch\u1eb7n c\u00e1c n\u1ed7 l\u1ef1c truy c\u1eadp tr\u00e1i ph\u00e9p v\u00e0o c\u00e1c d\u1ecbch v\u1ee5 b\u1ecb h\u1ea1n ch\u1ebf ho\u1eb7c th\u00f4ng tin nh\u1ea1y c\u1ea3m.<\/p>\n<\/li>\n<li>\n<p><strong>\u0110i\u1ec1u khi\u1ec3n giao th\u00f4ng<\/strong>: N\u00f3 gi\u00fap qu\u1ea3n l\u00fd l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng, c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t t\u1ed5ng th\u1ec3 v\u00e0 ph\u00e2n b\u1ed5 t\u00e0i nguy\u00ean.<\/p>\n<\/li>\n<\/ul>\n<h2>C\u00e1c lo\u1ea1i l\u1ecdc \u0111\u1ea7u v\u00e0o<\/h2>\n<p>L\u1ecdc x\u00e2m nh\u1eadp c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i th\u00e0nh ba lo\u1ea1i ch\u00ednh d\u1ef1a tr\u00ean vi\u1ec7c tri\u1ec3n khai v\u00e0 ph\u1ea1m vi c\u1ee7a n\u00f3:<\/p>\n<table>\n<thead>\n<tr>\n<th>Ki\u1ec3u<\/th>\n<th>S\u1ef1 mi\u00eau t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>L\u1ecdc g\u00f3i t\u0129nh<\/strong><\/td>\n<td>H\u00ecnh th\u1ee9c l\u1ecdc c\u01a1 b\u1ea3n v\u00e0 truy\u1ec1n th\u1ed1ng, s\u1eed d\u1ee5ng c\u00e1c quy t\u1eafc \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 c\u00e1c g\u00f3i.<\/td>\n<\/tr>\n<tr>\n<td><strong>L\u1ecdc g\u00f3i \u0111\u1ed9ng<\/strong><\/td>\n<td>S\u1eed d\u1ee5ng t\u00ednh n\u0103ng ki\u1ec3m tra tr\u1ea1ng th\u00e1i \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 c\u00e1c g\u00f3i trong b\u1ed1i c\u1ea3nh c\u00e1c phi\u00ean \u0111ang di\u1ec5n ra.<\/td>\n<\/tr>\n<tr>\n<td><strong>L\u1ecdc \u0111\u01b0\u1eddng d\u1eabn ng\u01b0\u1ee3c<\/strong><\/td>\n<td>T\u1eadp trung v\u00e0o vi\u1ec7c x\u00e1c minh t\u00ednh h\u1ee3p l\u1ec7 c\u1ee7a \u0111\u1ecba ch\u1ec9 IP ngu\u1ed3n c\u1ee7a c\u00e1c g\u00f3i tin \u0111\u1ebfn.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>C\u00e1ch s\u1eed d\u1ee5ng t\u00ednh n\u0103ng l\u1ecdc \u0111\u1ea7u v\u00e0o, th\u00e1ch th\u1ee9c v\u00e0 gi\u1ea3i ph\u00e1p<\/h2>\n<p>L\u1ecdc x\u00e2m nh\u1eadp \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u t\u00ecnh hu\u1ed1ng kh\u00e1c nhau:<\/p>\n<ul>\n<li>\n<p><strong>Nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 Internet (ISP)<\/strong>: ISP s\u1eed d\u1ee5ng t\u00ednh n\u0103ng l\u1ecdc Ingress \u0111\u1ec3 b\u1ea3o v\u1ec7 m\u1ea1ng v\u00e0 kh\u00e1ch h\u00e0ng c\u1ee7a h\u1ecd kh\u1ecfi l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp \u0111\u1ed9c h\u1ea1i v\u00e0 th\u01b0 r\u00e1c.<\/p>\n<\/li>\n<li>\n<p><strong>M\u1ea1ng doanh nghi\u1ec7p<\/strong>: C\u00e1c t\u1ed5 ch\u1ee9c s\u1eed d\u1ee5ng t\u00ednh n\u0103ng l\u1ecdc Ingress \u0111\u1ec3 b\u1ea3o v\u1ec7 t\u00e0i nguy\u00ean n\u1ed9i b\u1ed9 v\u00e0 ng\u0103n ch\u1eb7n truy c\u1eadp tr\u00e1i ph\u00e9p.<\/p>\n<\/li>\n<li>\n<p><strong>C\u00e1c trung t\u00e2m d\u1eef li\u1ec7u<\/strong>: Trung t\u00e2m d\u1eef li\u1ec7u tri\u1ec3n khai t\u00ednh n\u0103ng l\u1ecdc Ingress \u0111\u1ec3 b\u1ea3o v\u1ec7 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng v\u00e0 d\u1ecbch v\u1ee5 \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef c\u1ee7a h\u1ecd.<\/p>\n<\/li>\n<\/ul>\n<p>Tuy nhi\u00ean, vi\u1ec7c tri\u1ec3n khai t\u00ednh n\u0103ng l\u1ecdc Ingress c\u00f3 th\u1ec3 \u0111\u1eb7t ra m\u1ed9t s\u1ed1 th\u00e1ch th\u1ee9c, ch\u1eb3ng h\u1ea1n nh\u01b0:<\/p>\n<ul>\n<li>\n<p><strong>T\u00edch c\u1ef1c sai<\/strong>: Quy t\u1eafc l\u1ecdc qu\u00e1 h\u1ea1n ch\u1ebf c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn ch\u1eb7n l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp h\u1ee3p ph\u00e1p.<\/p>\n<\/li>\n<li>\n<p><strong>Chi ph\u00ed hi\u1ec7u su\u1ea5t<\/strong>: Ki\u1ec3m tra g\u00f3i s\u00e2u c\u00f3 th\u1ec3 g\u00e2y t\u1eafc ngh\u1ebdn hi\u1ec7u su\u1ea5t tr\u00ean c\u00e1c m\u1ea1ng c\u00f3 l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp cao.<\/p>\n<\/li>\n<li>\n<p><strong>M\u00f4i tr\u01b0\u1eddng n\u0103ng \u0111\u1ed9ng<\/strong>: M\u1ea1ng c\u00f3 c\u1ea5u h\u00ecnh thay \u0111\u1ed5i li\u00ean t\u1ee5c c\u00f3 th\u1ec3 g\u1eb7p kh\u00f3 kh\u0103n trong vi\u1ec7c duy tr\u00ec c\u00e1c quy t\u1eafc l\u1ecdc ch\u00ednh x\u00e1c.<\/p>\n<\/li>\n<\/ul>\n<p>\u0110\u1ec3 gi\u1ea3i quy\u1ebft nh\u1eefng th\u00e1ch th\u1ee9c n\u00e0y, c\u1ea7n ph\u1ea3i c\u1eadp nh\u1eadt th\u01b0\u1eddng xuy\u00ean v\u00e0 tinh ch\u1ec9nh c\u00e1c quy t\u1eafc l\u1ecdc, c\u00f9ng v\u1edbi s\u1ef1 c\u00e2n b\u1eb1ng gi\u1eefa c\u00e1c c\u00e2n nh\u1eafc v\u1ec1 b\u1ea3o m\u1eadt v\u00e0 hi\u1ec7u su\u1ea5t.<\/p>\n<h2>\u0110\u1eb7c \u0111i\u1ec3m ch\u00ednh v\u00e0 so s\u00e1nh<\/h2>\n<table>\n<thead>\n<tr>\n<th>T\u00ednh n\u0103ng<\/th>\n<th>L\u1ecdc x\u00e2m nh\u1eadp<\/th>\n<th>L\u1ecdc \u0111\u1ea7u ra<\/th>\n<th>Ki\u1ec3m tra tr\u1ea1ng th\u00e1i<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>H\u01b0\u1edbng giao th\u00f4ng<\/strong><\/td>\n<td>Trong n\u01b0\u1edbc<\/td>\n<td>\u0110i<\/td>\n<td>hai chi\u1ec1u<\/td>\n<\/tr>\n<tr>\n<td><strong>M\u1ee5c \u0111\u00edch<\/strong><\/td>\n<td>B\u1ea3o v\u1ec7<\/td>\n<td>B\u1ea3o v\u1ec7<\/td>\n<td>B\u1ea3o v\u1ec7<\/td>\n<\/tr>\n<tr>\n<td><strong>Ch\u1ee9c n\u0103ng<\/strong><\/td>\n<td>Ch\u1eb7n l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp \u0111\u1ed9c h\u1ea1i, Cho ph\u00e9p l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp h\u1ee3p ph\u00e1p<\/td>\n<td>Ch\u1eb7n r\u00f2 r\u1ec9 d\u1eef li\u1ec7u nh\u1ea1y c\u1ea3m, Cho ph\u00e9p l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp \u0111\u01b0\u1ee3c \u1ee7y quy\u1ec1n<\/td>\n<td>Ph\u00e2n t\u00edch c\u00e1c g\u00f3i trong ng\u1eef c\u1ea3nh<\/td>\n<\/tr>\n<tr>\n<td><strong>V\u1ecb tr\u00ed s\u1eed d\u1ee5ng<\/strong><\/td>\n<td>Chu vi m\u1ea1ng<\/td>\n<td>Chu vi m\u1ea1ng<\/td>\n<td>Trong M\u1ea1ng<\/td>\n<\/tr>\n<tr>\n<td><strong>Giao th\u1ee9c v\u00ed d\u1ee5<\/strong><\/td>\n<td>ACL, SPI<\/td>\n<td>ACL \u0111i ra<\/td>\n<td>TCP<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Quan \u0111i\u1ec3m v\u00e0 c\u00f4ng ngh\u1ec7 t\u01b0\u01a1ng lai<\/h2>\n<p>Khi c\u00f4ng ngh\u1ec7 ph\u00e1t tri\u1ec3n, t\u00ednh n\u0103ng l\u1ecdc Ingress s\u1ebd ti\u1ebfp t\u1ee5c \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t trong vi\u1ec7c b\u1ea3o v\u1ec7 m\u1ea1ng. T\u01b0\u01a1ng lai c\u00f3 th\u1ec3 ch\u1ee9ng ki\u1ebfn c\u00e1c ph\u01b0\u01a1ng ph\u00e1p ti\u1ebfp c\u1eadn d\u1ef1a tr\u00ean AI v\u00e0 h\u1ecdc m\u00e1y ph\u1ee9c t\u1ea1p h\u01a1n \u0111\u1ec3 ph\u00e1t hi\u1ec7n v\u00e0 gi\u1ea3m thi\u1ec3u c\u00e1c m\u1ed1i \u0111e d\u1ecda m\u1edbi n\u1ed5i. Ngo\u00e0i ra, v\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a Internet of Things (IoT), t\u00ednh n\u0103ng l\u1ecdc Ingress s\u1ebd ng\u00e0y c\u00e0ng tr\u1edf n\u00ean quan tr\u1ecdng trong vi\u1ec7c b\u1ea3o m\u1eadt c\u00e1c thi\u1ebft b\u1ecb v\u00e0 m\u1ea1ng IoT.<\/p>\n<h2>M\u00e1y ch\u1ee7 proxy v\u00e0 l\u1ecdc x\u00e2m nh\u1eadp<\/h2>\n<p>M\u00e1y ch\u1ee7 proxy v\u00e0 l\u1ecdc Ingress l\u00e0 c\u00e1c c\u00f4ng ngh\u1ec7 b\u1ed5 sung ph\u1ed1i h\u1ee3p v\u1edbi nhau \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt v\u00e0 quy\u1ec1n ri\u00eang t\u01b0 c\u1ee7a m\u1ea1ng. M\u00e1y ch\u1ee7 proxy \u0111\u00f3ng vai tr\u00f2 trung gian gi\u1eefa m\u00e1y kh\u00e1ch v\u00e0 m\u00e1y ch\u1ee7, cung c\u1ea5p l\u1edbp b\u1ea3o m\u1eadt b\u1ed5 sung b\u1eb1ng c\u00e1ch l\u1ecdc v\u00e0 ki\u1ec3m so\u00e1t l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp v\u00e0o v\u00e0 ra. H\u1ecd c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng k\u1ef9 thu\u1eadt l\u1ecdc Ingress \u0111\u1ec3 ph\u00e2n t\u00edch c\u00e1c y\u00eau c\u1ea7u \u0111\u1ebfn tr\u01b0\u1edbc khi chuy\u1ec3n ti\u1ebfp ch\u00fang \u0111\u1ebfn m\u00e1y ch\u1ee7 \u0111\u00edch. C\u00e1ch ti\u1ebfp c\u1eadn n\u00e0y c\u00f3 th\u1ec3 b\u1ea3o v\u1ec7 c\u00e1c m\u00e1y ch\u1ee7 th\u1ef1c t\u1ebf kh\u1ecfi ti\u1ebfp x\u00fac tr\u1ef1c ti\u1ebfp v\u1edbi c\u00e1c m\u1ed1i \u0111e d\u1ecda ti\u1ec1m \u1ea9n v\u00e0 gi\u1ea3m b\u1ec1 m\u1eb7t t\u1ea5n c\u00f4ng.<\/p>\n<h2>Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.ietf.org\/\" target=\"_new\" rel=\"noopener nofollow\">L\u1ef1c l\u01b0\u1ee3ng \u0111\u1eb7c nhi\u1ec7m k\u1ef9 thu\u1eadt Internet (IETF)<\/a><\/li>\n<li><a href=\"https:\/\/tools.ietf.org\/html\/bcp38\" target=\"_new\" rel=\"noopener nofollow\">L\u1ecdc x\u00e2m nh\u1eadp m\u1ea1ng: \u0110\u00e1nh b\u1ea1i c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5 s\u1eed d\u1ee5ng gi\u1ea3 m\u1ea1o \u0111\u1ecba ch\u1ec9 ngu\u1ed3n IP<\/a><\/li>\n<li><a href=\"https:\/\/www.cloudflare.com\/learning\/security\/glossary\/stateful-firewall-vs-stateless-firewall\/\" target=\"_new\" rel=\"noopener nofollow\">T\u01b0\u1eddng l\u1eeda c\u00f3 tr\u1ea1ng th\u00e1i v\u00e0 kh\u00f4ng c\u00f3 tr\u1ea1ng th\u00e1i: T\u00ecm hi\u1ec3u s\u1ef1 kh\u00e1c bi\u1ec7t<\/a><\/li>\n<li><a href=\"https:\/\/www.cloudflare.com\/learning\/security\/glossary\/what-is-a-proxy-server\/\" target=\"_new\" rel=\"noopener nofollow\">M\u00e1y ch\u1ee7 proxy v\u00e0 vai tr\u00f2 c\u1ee7a ch\u00fang trong b\u1ea3o m\u1eadt Internet<\/a><\/li>\n<\/ul>","protected":false},"featured_media":477597,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-477596","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Ingress Filtering: Enhancing Online Security and Performance<\/mark>","faq_items":[{"question":"What is Ingress filtering, and why is it important for network security?","answer":"<p>Ingress filtering is a vital network security technique that scrutinizes incoming data packets at the edges of a network. It evaluates the source, destination, and content of the packets to determine whether they meet predefined security policies and are allowed to enter the network. Ingress filtering is crucial for network security as it helps prevent malicious traffic from entering the network, mitigates DDoS attacks, prevents IP spoofing, and blocks unauthorized access.<\/p>"},{"question":"Can you explain the types of Ingress filtering?","answer":"<p>Ingress filtering can be categorized into three main types: Static Packet Filtering, Dynamic Packet Filtering, and Reverse Path Filtering. Static Packet Filtering uses predefined rules to evaluate packets, Dynamic Packet Filtering employs stateful inspection to assess packets in the context of ongoing sessions, and Reverse Path Filtering verifies the validity of the source IP address of incoming packets.<\/p>"},{"question":"How does Ingress filtering work internally?","answer":"<p>Ingress filtering works by subjecting incoming packets to deep inspection. It checks their source IP address, destination IP address, port numbers, and payload content. Access Control Lists (ACLs) are used to define the filtering rules and policies. More advanced Ingress filtering techniques utilize Stateful Packet Inspection (SPI) to analyze the context of the packet within the ongoing session, ensuring a comprehensive evaluation.<\/p>"},{"question":"What are the main benefits of implementing Ingress filtering?","answer":"<p>Ingress filtering offers several key benefits for network security and performance. It helps in DDoS mitigation, prevents IP spoofing, blocks unauthorized access attempts, and assists in traffic control, thereby improving overall network performance and resource allocation.<\/p>"},{"question":"What challenges may arise when using Ingress filtering, and how can they be addressed?","answer":"<p>Some challenges associated with Ingress filtering include false positives (legitimate traffic being blocked), performance overhead (deep packet inspection causing bottlenecks), and managing dynamic network configurations. These challenges can be addressed by regularly updating and fine-tuning filtering rules, finding a balance between security and performance, and employing AI-based solutions for more accurate threat detection.<\/p>"},{"question":"How does Ingress filtering relate to proxy servers?","answer":"<p>Ingress filtering and proxy servers complement each other in enhancing network security. Proxy servers act as intermediaries between clients and servers, offering an additional layer of security by filtering and controlling inbound and outbound traffic. They can apply Ingress filtering techniques to analyze incoming requests before forwarding them to the destination servers, protecting the actual servers from direct exposure to potential threats and reducing the attack surface.<\/p>"},{"question":"What does the future hold for Ingress filtering?","answer":"<p>As technology advances, Ingress filtering will continue to play a crucial role in safeguarding networks. The future may see more sophisticated machine learning and AI-based approaches to detect and mitigate emerging threats. With the growth of the Internet of Things (IoT), Ingress filtering will become increasingly vital in securing IoT devices and networks.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/477596","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/477596\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/477597"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=477596"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}