{"id":478120,"date":"2023-08-09T09:27:52","date_gmt":"2023-08-09T09:27:52","guid":{"rendered":""},"modified":"2023-09-05T11:16:09","modified_gmt":"2023-09-05T11:16:09","slug":"network-access-control","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/network-access-control\/","title":{"rendered":"Ki\u1ec3m so\u00e1t truy c\u1eadp m\u1ea1ng"},"content":{"rendered":"<h2>Gi\u1edbi thi\u1ec7u<\/h2>\n<p>Ki\u1ec3m so\u00e1t truy c\u1eadp m\u1ea1ng (NAC) l\u00e0 m\u1ed9t bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt c\u01a1 b\u1ea3n \u0111\u01b0\u1ee3c c\u00e1c t\u1ed5 ch\u1ee9c v\u00e0 c\u00e1 nh\u00e2n s\u1eed d\u1ee5ng \u0111\u1ec3 qu\u1ea3n l\u00fd v\u00e0 ki\u1ec3m so\u00e1t quy\u1ec1n truy c\u1eadp v\u00e0o m\u1ea1ng m\u00e1y t\u00ednh c\u1ee7a h\u1ecd. N\u00f3 \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t l\u1edbp b\u1ea3o v\u1ec7 quan tr\u1ecdng ch\u1ed1ng l\u1ea1i truy c\u1eadp tr\u00e1i ph\u00e9p, vi ph\u1ea1m d\u1eef li\u1ec7u v\u00e0 c\u00e1c m\u1ed1i \u0111e d\u1ecda m\u1ea1ng ti\u1ec1m \u1ea9n. B\u00e0i vi\u1ebft n\u00e0y \u0111i s\u00e2u v\u00e0o s\u1ef1 ph\u1ee9c t\u1ea1p c\u1ee7a ki\u1ec3m so\u00e1t truy c\u1eadp m\u1ea1ng, t\u1eadp trung v\u00e0o l\u1ecbch s\u1eed, ch\u1ee9c n\u0103ng, lo\u1ea1i, \u1ee9ng d\u1ee5ng v\u00e0 tri\u1ec3n v\u1ecdng trong t\u01b0\u01a1ng lai c\u1ee7a n\u00f3. Ngo\u00e0i ra, ch\u00fang t\u00f4i s\u1ebd kh\u00e1m ph\u00e1 c\u00e1ch li\u00ean k\u1ebft ki\u1ec3m so\u00e1t truy c\u1eadp m\u1ea1ng v\u1edbi m\u00e1y ch\u1ee7 proxy v\u00e0 th\u1ea3o lu\u1eadn c\u1ee5 th\u1ec3 v\u1ec1 m\u1ee9c \u0111\u1ed9 li\u00ean quan c\u1ee7a n\u00f3 v\u1edbi OneProxy (oneproxy.pro), nh\u00e0 cung c\u1ea5p m\u00e1y ch\u1ee7 proxy n\u1ed5i b\u1eadt.<\/p>\n<h2>L\u1ecbch s\u1eed v\u00e0 ngu\u1ed3n g\u1ed1c c\u1ee7a ki\u1ec3m so\u00e1t truy c\u1eadp m\u1ea1ng<\/h2>\n<p>Kh\u00e1i ni\u1ec7m ki\u1ec3m so\u00e1t truy c\u1eadp m\u1ea1ng c\u00f3 ngu\u1ed3n g\u1ed1c t\u1eeb nh\u1eefng ng\u00e0y \u0111\u1ea7u c\u1ee7a m\u1ea1ng m\u00e1y t\u00ednh, kho\u1ea3ng nh\u1eefng n\u0103m 1970 v\u00e0 1980. Khi m\u1ea1ng m\u00e1y t\u00ednh m\u1edf r\u1ed9ng, c\u00e1c t\u1ed5 ch\u1ee9c nh\u1eadn ra s\u1ef1 c\u1ea7n thi\u1ebft c\u1ee7a m\u1ed9t c\u01a1 ch\u1ebf c\u00f3 th\u1ec3 x\u00e1c th\u1ef1c ng\u01b0\u1eddi d\u00f9ng v\u00e0 thi\u1ebft b\u1ecb \u0111ang c\u1ed1 g\u1eafng k\u1ebft n\u1ed1i v\u1edbi m\u1ea1ng c\u1ee7a h\u1ecd. M\u1ee5c ti\u00eau ch\u00ednh l\u00e0 ng\u0103n ch\u1eb7n truy c\u1eadp tr\u00e1i ph\u00e9p v\u00e0 \u0111\u1ea3m b\u1ea3o r\u1eb1ng ch\u1ec9 nh\u1eefng ng\u01b0\u1eddi d\u00f9ng h\u1ee3p ph\u00e1p v\u1edbi c\u00e1c \u0111\u1eb7c quy\u1ec1n c\u1ea7n thi\u1ebft m\u1edbi c\u00f3 th\u1ec3 truy c\u1eadp \u0111\u01b0\u1ee3c.<\/p>\n<p>Ban \u0111\u1ea7u, vi\u1ec7c ki\u1ec3m so\u00e1t truy c\u1eadp m\u1ea1ng r\u1ea5t \u0111\u01a1n gi\u1ea3n v\u00e0 th\u01b0\u1eddng d\u1ef1a tr\u00ean danh s\u00e1ch truy c\u1eadp t\u0129nh do qu\u1ea3n tr\u1ecb vi\u00ean qu\u1ea3n l\u00fd theo c\u00e1ch th\u1ee7 c\u00f4ng. Tuy nhi\u00ean, khi m\u1ea1ng ng\u00e0y c\u00e0ng l\u1edbn h\u01a1n v\u00e0 ph\u1ee9c t\u1ea1p h\u01a1n, c\u00e1c ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m so\u00e1t truy c\u1eadp truy\u1ec1n th\u1ed1ng tr\u1edf n\u00ean kh\u00f4ng th\u1ef1c t\u1ebf. Nhu c\u1ea7u v\u1ec1 m\u1ed9t gi\u1ea3i ph\u00e1p t\u1eadp trung v\u00e0 t\u1ef1 \u0111\u1ed9ng \u0111\u00e3 m\u1edf \u0111\u01b0\u1eddng cho c\u00e1c h\u1ec7 th\u1ed1ng ki\u1ec3m so\u00e1t truy c\u1eadp m\u1ea1ng hi\u1ec7n \u0111\u1ea1i.<\/p>\n<h2>Th\u00f4ng tin chi ti\u1ebft v\u1ec1 Ki\u1ec3m so\u00e1t truy c\u1eadp m\u1ea1ng<\/h2>\n<p>Ki\u1ec3m so\u00e1t truy c\u1eadp m\u1ea1ng l\u00e0 m\u1ed9t khung b\u1ea3o m\u1eadt \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh v\u00e0 b\u1ea3o m\u1eadt quy\u1ec1n truy c\u1eadp v\u00e0o m\u1ea1ng m\u00e1y t\u00ednh d\u1ef1a tr\u00ean c\u00e1c ch\u00ednh s\u00e1ch \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc. N\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c tri\u1ec3n khai b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng k\u1ebft h\u1ee3p c\u00e1c th\u00e0nh ph\u1ea7n ph\u1ea7n c\u1ee9ng v\u00e0 ph\u1ea7n m\u1ec1m, cho ph\u00e9p c\u00e1c t\u1ed5 ch\u1ee9c th\u1ef1c thi ki\u1ec3m so\u00e1t truy c\u1eadp t\u1ea1i nhi\u1ec1u \u0111i\u1ec3m v\u00e0o trong m\u1ea1ng.<\/p>\n<p>C\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a h\u1ec7 th\u1ed1ng ki\u1ec3m so\u00e1t truy c\u1eadp m\u1ea1ng bao g\u1ed3m:<\/p>\n<ol>\n<li>\n<p><strong>C\u01a1 ch\u1ebf x\u00e1c th\u1ef1c<\/strong>: Ph\u01b0\u01a1ng ph\u00e1p x\u00e1c minh danh t\u00ednh c\u1ee7a ng\u01b0\u1eddi d\u00f9ng v\u00e0 thi\u1ebft b\u1ecb \u0111ang c\u1ed1 truy c\u1eadp m\u1ea1ng. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 li\u00ean quan \u0111\u1ebfn m\u1eadt kh\u1ea9u, ch\u1ee9ng ch\u1ec9 k\u1ef9 thu\u1eadt s\u1ed1, sinh tr\u1eafc h\u1ecdc ho\u1eb7c x\u00e1c th\u1ef1c \u0111a y\u1ebfu t\u1ed1.<\/p>\n<\/li>\n<li>\n<p><strong>Ch\u00ednh s\u00e1ch \u1ee7y quy\u1ec1n<\/strong>: M\u1ed9t b\u1ed9 quy t\u1eafc x\u00e1c \u0111\u1ecbnh nh\u1eefng t\u00e0i nguy\u00ean v\u00e0 d\u1ecbch v\u1ee5 m\u00e0 ng\u01b0\u1eddi d\u00f9ng ho\u1eb7c thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 truy c\u1eadp sau khi \u0111\u01b0\u1ee3c x\u00e1c th\u1ef1c. Vi\u1ec7c \u1ee7y quy\u1ec1n c\u00f3 th\u1ec3 d\u1ef1a tr\u00ean vai tr\u00f2, nh\u1eadn bi\u1ebft ng\u1eef c\u1ea3nh ho\u1eb7c d\u1ef1a tr\u00ean th\u1eddi gian.<\/p>\n<\/li>\n<li>\n<p><strong>\u0110i\u1ec3m th\u1ef1c thi m\u1ea1ng (NEP)<\/strong>: \u0110\u00e2y l\u00e0 c\u00e1c thi\u1ebft b\u1ecb th\u1ef1c thi nh\u01b0 t\u01b0\u1eddng l\u1eeda, b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn, b\u1ed9 chuy\u1ec3n m\u1ea1ch v\u00e0 \u0111i\u1ec3m truy c\u1eadp ch\u1ecbu tr\u00e1ch nhi\u1ec7m ki\u1ec3m so\u00e1t quy\u1ec1n truy c\u1eadp d\u1ef1a tr\u00ean tr\u1ea1ng th\u00e1i x\u00e1c th\u1ef1c v\u00e0 \u1ee7y quy\u1ec1n.<\/p>\n<\/li>\n<li>\n<p><strong>M\u00e1y ch\u1ee7 ch\u00ednh s\u00e1ch<\/strong>: C\u00e1c m\u00e1y ch\u1ee7 t\u1eadp trung l\u01b0u tr\u1eef v\u00e0 qu\u1ea3n l\u00fd c\u00e1c ch\u00ednh s\u00e1ch ki\u1ec3m so\u00e1t truy c\u1eadp v\u00e0 li\u00ean l\u1ea1c v\u1edbi NEP \u0111\u1ec3 th\u1ef1c thi ch\u00fang.<\/p>\n<\/li>\n<\/ol>\n<h2>C\u1ea5u tr\u00fac b\u00ean trong v\u00e0 ch\u1ee9c n\u0103ng c\u1ee7a Ki\u1ec3m so\u00e1t truy c\u1eadp m\u1ea1ng<\/h2>\n<p>Ki\u1ec3m so\u00e1t truy c\u1eadp m\u1ea1ng ho\u1ea1t \u0111\u1ed9ng theo nhi\u1ec1u l\u1edbp \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an ninh to\u00e0n di\u1ec7n. C\u1ea5u tr\u00fac b\u00ean trong c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia th\u00e0nh c\u00e1c b\u01b0\u1edbc sau:<\/p>\n<ol>\n<li>\n<p><strong>Nh\u1eadn bi\u1ebft<\/strong>: Ng\u01b0\u1eddi d\u00f9ng v\u00e0 thi\u1ebft b\u1ecb mu\u1ed1n truy c\u1eadp m\u1ea1ng ph\u1ea3i t\u1ef1 nh\u1eadn d\u1ea1ng. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 li\u00ean quan \u0111\u1ebfn vi\u1ec7c cung c\u1ea5p t\u00ean ng\u01b0\u1eddi d\u00f9ng, m\u1eadt kh\u1ea9u, ch\u1ee9ng ch\u1ec9 k\u1ef9 thu\u1eadt s\u1ed1 ho\u1eb7c th\u00f4ng tin nh\u1eadn d\u1ea1ng kh\u00e1c.<\/p>\n<\/li>\n<li>\n<p><strong>X\u00e1c th\u1ef1c<\/strong>: Th\u00f4ng tin x\u00e1c th\u1ef1c \u0111\u01b0\u1ee3c cung c\u1ea5p s\u1ebd \u0111\u01b0\u1ee3c x\u00e1c minh \u0111\u1ec3 thi\u1ebft l\u1eadp danh t\u00ednh c\u1ee7a ng\u01b0\u1eddi d\u00f9ng ho\u1eb7c thi\u1ebft b\u1ecb. B\u01b0\u1edbc n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng ch\u1ec9 nh\u1eefng ng\u01b0\u1eddi d\u00f9ng h\u1ee3p ph\u00e1p m\u1edbi c\u00f3 \u0111\u01b0\u1ee3c quy\u1ec1n truy c\u1eadp.<\/p>\n<\/li>\n<li>\n<p><strong>\u1ee6y quy\u1ec1n<\/strong>: D\u1ef1a tr\u00ean danh t\u00ednh \u0111\u01b0\u1ee3c x\u00e1c th\u1ef1c, h\u1ec7 th\u1ed1ng NAC ki\u1ec3m tra quy\u1ec1n v\u00e0 quy\u1ec1n truy c\u1eadp c\u1ee7a ng\u01b0\u1eddi d\u00f9ng. B\u01b0\u1edbc n\u00e0y x\u00e1c \u0111\u1ecbnh nh\u1eefng t\u00e0i nguy\u00ean m\u00e0 ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 truy c\u1eadp.<\/p>\n<\/li>\n<li>\n<p><strong>\u0110\u00e1nh gi\u00e1 t\u01b0 th\u1ebf<\/strong>: M\u1ed9t s\u1ed1 h\u1ec7 th\u1ed1ng NAC ti\u00ean ti\u1ebfn ti\u1ebfn h\u00e0nh \u0111\u00e1nh gi\u00e1 tr\u1ea1ng th\u00e1i \u0111\u1ec3 ki\u1ec3m tra tr\u1ea1ng th\u00e1i b\u1ea3o m\u1eadt c\u1ee7a thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c thi\u1ebft b\u1ecb \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n b\u1ea3o m\u1eadt nh\u1ea5t \u0111\u1ecbnh tr\u01b0\u1edbc khi c\u1ea5p quy\u1ec1n truy c\u1eadp.<\/p>\n<\/li>\n<li>\n<p><strong>Th\u1ef1c thi<\/strong>: Sau khi x\u00e1c th\u1ef1c v\u00e0 \u1ee7y quy\u1ec1n th\u00e0nh c\u00f4ng, h\u1ec7 th\u1ed1ng NAC s\u1ebd h\u01b0\u1edbng d\u1eabn NEP th\u1ef1c thi c\u00e1c ch\u00ednh s\u00e1ch ki\u1ec3m so\u00e1t truy c\u1eadp. NEP cho ph\u00e9p ho\u1eb7c t\u1eeb ch\u1ed1i quy\u1ec1n truy c\u1eadp d\u1ef1a tr\u00ean h\u01b0\u1edbng d\u1eabn c\u1ee7a h\u1ec7 th\u1ed1ng NAC.<\/p>\n<\/li>\n<\/ol>\n<h2>C\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a Ki\u1ec3m so\u00e1t truy c\u1eadp m\u1ea1ng<\/h2>\n<p>Ki\u1ec3m so\u00e1t truy c\u1eadp m\u1ea1ng cung c\u1ea5p m\u1ed9t s\u1ed1 t\u00ednh n\u0103ng ch\u00ednh gi\u00fap t\u0103ng c\u01b0\u1eddng ki\u1ec3m so\u00e1t v\u00e0 b\u1ea3o m\u1eadt m\u1ea1ng. M\u1ed9t s\u1ed1 t\u00ednh n\u0103ng n\u00e0y bao g\u1ed3m:<\/p>\n<ol>\n<li>\n<p><strong>B\u1ea3o m\u1eadt n\u00e2ng cao<\/strong>: NAC \u0111\u1ea3m b\u1ea3o r\u1eb1ng ch\u1ec9 nh\u1eefng thi\u1ebft b\u1ecb v\u00e0 ng\u01b0\u1eddi d\u00f9ng \u0111\u01b0\u1ee3c \u1ee7y quy\u1ec1n v\u00e0 tu\u00e2n th\u1ee7 m\u1edbi c\u00f3 th\u1ec3 truy c\u1eadp m\u1ea1ng, gi\u1ea3m nguy c\u01a1 truy c\u1eadp tr\u00e1i ph\u00e9p v\u00e0 vi ph\u1ea1m d\u1eef li\u1ec7u.<\/p>\n<\/li>\n<li>\n<p><strong>Qu\u1ea3n l\u00fd quy\u1ec1n truy c\u1eadp c\u1ee7a kh\u00e1ch<\/strong>: NAC cung c\u1ea5p m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p an to\u00e0n v\u00e0 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t \u0111\u1ec3 c\u1ea5p quy\u1ec1n truy c\u1eadp t\u1ea1m th\u1eddi cho kh\u00e1ch, nh\u00e0 th\u1ea7u ho\u1eb7c kh\u00e1ch.<\/p>\n<\/li>\n<li>\n<p><strong>Tu\u00e2n th\u1ee7 \u0111i\u1ec3m cu\u1ed1i<\/strong>: H\u1ec7 th\u1ed1ng NAC n\u00e2ng cao \u0111\u00e1nh gi\u00e1 tr\u1ea1ng th\u00e1i b\u1ea3o m\u1eadt c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ch\u00fang \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n b\u1ea3o m\u1eadt \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh tr\u01b0\u1edbc khi c\u1ea5p quy\u1ec1n truy c\u1eadp.<\/p>\n<\/li>\n<li>\n<p><strong>H\u1ed3 s\u01a1 ng\u01b0\u1eddi d\u00f9ng<\/strong>: Gi\u1ea3i ph\u00e1p NAC c\u00f3 th\u1ec3 l\u1eadp h\u1ed3 s\u01a1 ng\u01b0\u1eddi d\u00f9ng d\u1ef1a tr\u00ean vai tr\u00f2 c\u1ee7a h\u1ecd v\u00e0 ch\u1ec9 \u0111\u1ecbnh quy\u1ec1n truy c\u1eadp ph\u00f9 h\u1ee3p, h\u1ee3p l\u00fd h\u00f3a vi\u1ec7c qu\u1ea3n l\u00fd quy\u1ec1n truy c\u1eadp trong c\u00e1c t\u1ed5 ch\u1ee9c l\u1edbn.<\/p>\n<\/li>\n<li>\n<p><strong>Gi\u00e1m s\u00e1t th\u1eddi gian th\u1ef1c<\/strong>: H\u1ec7 th\u1ed1ng NAC li\u00ean t\u1ee5c gi\u00e1m s\u00e1t ho\u1ea1t \u0111\u1ed9ng m\u1ea1ng, cho ph\u00e9p ph\u00e1t hi\u1ec7n v\u00e0 \u1ee9ng ph\u00f3 k\u1ecbp th\u1eddi v\u1edbi c\u00e1c m\u1ed1i \u0111e d\u1ecda b\u1ea3o m\u1eadt ti\u1ec1m \u1ea9n.<\/p>\n<\/li>\n<li>\n<p><strong>Qu\u1ea3n l\u00fd ch\u00ednh s\u00e1ch t\u1eadp trung<\/strong>: NAC cung c\u1ea5p kh\u1ea3 n\u0103ng ki\u1ec3m so\u00e1t v\u00e0 qu\u1ea3n l\u00fd t\u1eadp trung c\u00e1c ch\u00ednh s\u00e1ch truy c\u1eadp, \u0111\u01a1n gi\u1ea3n h\u00f3a vi\u1ec7c qu\u1ea3n tr\u1ecb v\u00e0 \u0111\u1ea3m b\u1ea3o th\u1ef1c thi nh\u1ea5t qu\u00e1n.<\/p>\n<\/li>\n<\/ol>\n<h2>C\u00e1c lo\u1ea1i ki\u1ec3m so\u00e1t truy c\u1eadp m\u1ea1ng<\/h2>\n<p>C\u00e1c gi\u1ea3i ph\u00e1p ki\u1ec3m so\u00e1t truy c\u1eadp m\u1ea1ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n th\u00e0nh nhi\u1ec1u lo\u1ea1i d\u1ef1a tr\u00ean vi\u1ec7c tri\u1ec3n khai v\u00e0 ch\u1ee9c n\u0103ng c\u1ee7a ch\u00fang. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 lo\u1ea1i NAC ph\u1ed5 bi\u1ebfn:<\/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>\u0110i\u1ec3m cu\u1ed1i NAC<\/strong><\/td>\n<td>\u0110\u01b0\u1ee3c tri\u1ec3n khai tr\u00ean c\u00e1c thi\u1ebft b\u1ecb ri\u00eang l\u1ebb \u0111\u1ec3 th\u1ef1c thi c\u00e1c ch\u00ednh s\u00e1ch ki\u1ec3m so\u00e1t truy c\u1eadp tr\u1ef1c ti\u1ebfp tr\u00ean c\u00e1c thi\u1ebft b\u1ecb \u0111\u1ea7u cu\u1ed1i.<\/td>\n<\/tr>\n<tr>\n<td><strong>802.1X NAC<\/strong><\/td>\n<td>D\u1ef1a v\u00e0o ti\u00eau chu\u1ea9n IEEE 802.1X \u0111\u1ec3 x\u00e1c th\u1ef1c v\u00e0 c\u1ea5p ph\u00e9p cho c\u00e1c thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i v\u1edbi m\u1ea1ng.<\/td>\n<\/tr>\n<tr>\n<td><strong>NAC tr\u01b0\u1edbc khi nh\u1eadp h\u1ecdc<\/strong><\/td>\n<td>\u0110\u00e1nh gi\u00e1 tr\u1ea1ng th\u00e1i b\u1ea3o m\u1eadt c\u1ee7a thi\u1ebft b\u1ecb tr\u01b0\u1edbc khi c\u1ea5p cho ch\u00fang quy\u1ec1n truy c\u1eadp v\u00e0o m\u1ea1ng.<\/td>\n<\/tr>\n<tr>\n<td><strong>NAC sau nh\u1eadp h\u1ecdc<\/strong><\/td>\n<td>C\u00e1c thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c ph\u00e9p k\u1ebft n\u1ed1i tr\u01b0\u1edbc v\u00e0 \u0111\u00e1nh gi\u00e1 NAC di\u1ec5n ra sau khi k\u1ebft n\u1ed1i \u0111\u1ec3 th\u1ef1c thi c\u00e1c ch\u00ednh s\u00e1ch truy c\u1eadp.<\/td>\n<\/tr>\n<tr>\n<td><strong>NAC d\u1ef1a tr\u00ean \u0111\u1ea1i l\u00fd<\/strong><\/td>\n<td>Y\u00eau c\u1ea7u c\u00e0i \u0111\u1eb7t c\u00e1c t\u00e1c nh\u00e2n ph\u1ea7n m\u1ec1m tr\u00ean thi\u1ebft b\u1ecb \u0111\u1ec3 t\u1ea1o \u0111i\u1ec1u ki\u1ec7n x\u00e1c th\u1ef1c v\u00e0 th\u1ef1c thi ch\u00ednh s\u00e1ch.<\/td>\n<\/tr>\n<tr>\n<td><strong>NAC kh\u00f4ng c\u00f3 t\u00e1c nh\u00e2n<\/strong><\/td>\n<td>Ti\u1ebfn h\u00e0nh x\u00e1c th\u1ef1c v\u00e0 th\u1ef1c thi ch\u00ednh s\u00e1ch m\u00e0 kh\u00f4ng y\u00eau c\u1ea7u c\u00e0i \u0111\u1eb7t b\u1ea5t k\u1ef3 ph\u1ea7n m\u1ec1m n\u00e0o tr\u00ean c\u00e1c thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>C\u00e1ch s\u1eed d\u1ee5ng Ki\u1ec3m so\u00e1t truy c\u1eadp m\u1ea1ng, th\u00e1ch th\u1ee9c v\u00e0 gi\u1ea3i ph\u00e1p<\/h2>\n<p>Ki\u1ec3m so\u00e1t truy c\u1eadp m\u1ea1ng t\u00ecm th\u1ea5y \u1ee9ng d\u1ee5ng trong nhi\u1ec1u t\u00ecnh hu\u1ed1ng v\u00e0 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng kh\u00e1c nhau:<\/p>\n<ol>\n<li>\n<p><strong>M\u1ea1ng doanh nghi\u1ec7p<\/strong>: C\u00e1c t\u1ed5 ch\u1ee9c s\u1eed d\u1ee5ng NAC \u0111\u1ec3 b\u1ea3o m\u1eadt m\u1ea1ng n\u1ed9i b\u1ed9 c\u1ee7a h\u1ecd, ch\u1ec9 c\u1ea5p quy\u1ec1n truy c\u1eadp cho c\u00e1c nh\u00e2n vi\u00ean v\u00e0 thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c \u1ee7y quy\u1ec1n.<\/p>\n<\/li>\n<li>\n<p><strong>Quy\u1ec1n truy c\u1eadp c\u1ee7a kh\u00e1ch<\/strong>: NAC cho ph\u00e9p c\u00e1c t\u1ed5 ch\u1ee9c cung c\u1ea5p quy\u1ec1n truy c\u1eadp c\u1ee7a kh\u00e1ch \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t v\u00e0 an to\u00e0n cho kh\u00e1ch truy c\u1eadp m\u00e0 kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn an ninh m\u1ea1ng.<\/p>\n<\/li>\n<li>\n<p><strong>BYOD (Mang theo thi\u1ebft b\u1ecb c\u1ee7a ri\u00eang b\u1ea1n)<\/strong>: NAC \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c thi\u1ebft b\u1ecb c\u00e1 nh\u00e2n k\u1ebft n\u1ed1i v\u1edbi m\u1ea1ng c\u00f4ng ty tu\u00e2n th\u1ee7 c\u00e1c ch\u00ednh s\u00e1ch b\u1ea3o m\u1eadt.<\/p>\n<\/li>\n<li>\n<p><strong>B\u1ea3o m\u1eadt IoT<\/strong>: V\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a Internet of Things (IoT), NAC \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c b\u1ea3o m\u1eadt c\u00e1c thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u00e0 m\u1ea1ng IoT.<\/p>\n<\/li>\n<\/ol>\n<p>B\u1ea5t ch\u1ea5p nh\u1eefng l\u1ee3i \u00edch c\u1ee7a n\u00f3, vi\u1ec7c tri\u1ec3n khai NAC c\u00f3 th\u1ec3 \u0111\u1eb7t ra nh\u1eefng th\u00e1ch th\u1ee9c, bao g\u1ed3m:<\/p>\n<ul>\n<li>\n<p><strong>\u0110\u1ed9 ph\u1ee9c t\u1ea1p<\/strong>: Vi\u1ec7c tri\u1ec3n khai NAC c\u00f3 th\u1ec3 ph\u1ee9c t\u1ea1p, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong c\u00e1c m\u1ea1ng quy m\u00f4 l\u1edbn v\u1edbi nhi\u1ec1u thi\u1ebft b\u1ecb v\u00e0 ng\u01b0\u1eddi d\u00f9ng kh\u00e1c nhau.<\/p>\n<\/li>\n<li>\n<p><strong>H\u1ed9i nh\u1eadp<\/strong>: Vi\u1ec7c t\u00edch h\u1ee3p NAC v\u1edbi c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u1ea1ng v\u00e0 h\u1ec7 th\u1ed1ng b\u1ea3o m\u1eadt hi\u1ec7n c\u00f3 c\u00f3 th\u1ec3 y\u00eau c\u1ea7u l\u1eadp k\u1ebf ho\u1ea1ch c\u1ea9n th\u1eadn.<\/p>\n<\/li>\n<li>\n<p><strong>Kinh nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng<\/strong>: Vi\u1ec7c tri\u1ec3n khai NAC ph\u1ea3i \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ef1 c\u00e2n b\u1eb1ng gi\u1eefa b\u1ea3o m\u1eadt v\u00e0 cung c\u1ea5p tr\u1ea3i nghi\u1ec7m li\u1ec1n m\u1ea1ch cho ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<\/li>\n<\/ul>\n<p>\u0110\u1ec3 gi\u1ea3i quy\u1ebft nh\u1eefng th\u00e1ch th\u1ee9c n\u00e0y, c\u00e1c t\u1ed5 ch\u1ee9c c\u00f3 th\u1ec3:<\/p>\n<ul>\n<li>\n<p><strong>L\u1eadp k\u1ebf ho\u1ea1ch k\u1ef9 l\u01b0\u1ee1ng<\/strong>: L\u1eadp k\u1ebf ho\u1ea1ch c\u1ea9n th\u1eadn v\u00e0 hi\u1ec3u r\u00f5 c\u00e1c y\u00eau c\u1ea7u c\u1ee7a t\u1ed5 ch\u1ee9c l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 tri\u1ec3n khai NAC th\u00e0nh c\u00f4ng.<\/p>\n<\/li>\n<li>\n<p><strong>Tri\u1ec3n khai d\u1ea7n d\u1ea7n<\/strong>: Vi\u1ec7c tri\u1ec3n khai NAC theo t\u1eebng giai \u0111o\u1ea1n c\u00f3 th\u1ec3 gi\u00fap qu\u1ea3n l\u00fd s\u1ef1 ph\u1ee9c t\u1ea1p v\u00e0 gi\u1ea3m thi\u1ec3u s\u1ef1 gi\u00e1n \u0111o\u1ea1n.<\/p>\n<\/li>\n<li>\n<p><strong>Gi\u00e1o d\u1ee5c ng\u01b0\u1eddi d\u00f9ng<\/strong>: H\u01b0\u1edbng d\u1eabn ng\u01b0\u1eddi d\u00f9ng v\u1ec1 NAC v\u00e0 l\u1ee3i \u00edch c\u1ee7a n\u00f3 c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n s\u1ef1 ch\u1ea5p nh\u1eadn v\u00e0 h\u1ee3p t\u00e1c c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<\/li>\n<\/ul>\n<h2>Quan \u0111i\u1ec3m v\u00e0 c\u00f4ng ngh\u1ec7 c\u1ee7a t\u01b0\u01a1ng lai<\/h2>\n<p>T\u01b0\u01a1ng lai c\u1ee7a ki\u1ec3m so\u00e1t truy c\u1eadp m\u1ea1ng c\u00f3 v\u1ebb \u0111\u1ea7y h\u1ee9a h\u1eb9n v\u1edbi nh\u1eefng ti\u1ebfn b\u1ed9 kh\u00f4ng ng\u1eebng trong c\u00f4ng ngh\u1ec7. M\u1ed9t s\u1ed1 ph\u00e1t tri\u1ec3n ti\u1ec1m n\u0103ng bao g\u1ed3m:<\/p>\n<ol>\n<li>\n<p><strong>Ki\u1ebfn tr\u00fac Zero Trust<\/strong>: M\u1ed9t kh\u00e1i ni\u1ec7m b\u1ea3o m\u1eadt coi t\u1ea5t c\u1ea3 ng\u01b0\u1eddi d\u00f9ng v\u00e0 thi\u1ebft b\u1ecb \u0111\u1ec1u c\u00f3 kh\u1ea3 n\u0103ng kh\u00f4ng \u0111\u00e1ng tin c\u1eady, y\u00eau c\u1ea7u x\u00e1c minh li\u00ean t\u1ee5c b\u1ea5t k\u1ec3 v\u1ecb tr\u00ed ho\u1eb7c quy\u1ec1n truy c\u1eadp m\u1ea1ng c\u1ee7a h\u1ecd.<\/p>\n<\/li>\n<li>\n<p><strong>T\u00edch h\u1ee3p AI v\u00e0 Machine Learning<\/strong>: Vi\u1ec7c t\u00edch h\u1ee3p AI v\u00e0 h\u1ecdc m\u00e1y v\u00e0o h\u1ec7 th\u1ed1ng NAC c\u00f3 th\u1ec3 t\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng ph\u00e1t hi\u1ec7n m\u1ed1i \u0111e d\u1ecda v\u00e0 c\u1ea3i thi\u1ec7n vi\u1ec7c ra quy\u1ebft \u0111\u1ecbnh d\u1ef1a tr\u00ean ph\u00e2n t\u00edch h\u00e0nh vi c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<\/li>\n<li>\n<p><strong>NAC d\u1ef1a tr\u00ean chu\u1ed7i kh\u1ed1i<\/strong>: Vi\u1ec7c s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 blockchain \u0111\u1ec3 x\u00e1c th\u1ef1c ng\u01b0\u1eddi d\u00f9ng v\u00e0 ki\u1ec3m so\u00e1t quy\u1ec1n truy c\u1eadp c\u00f3 th\u1ec3 t\u0103ng th\u00eam \u0111\u1ed9 tin c\u1eady v\u00e0 minh b\u1ea1ch cho c\u00e1c gi\u1ea3i ph\u00e1p NAC.<\/p>\n<\/li>\n<li>\n<p><strong>M\u1ea1ng \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1eb1ng ph\u1ea7n m\u1ec1m (SDN)<\/strong>: SDN c\u00f3 th\u1ec3 b\u1ed5 sung cho NAC b\u1eb1ng c\u00e1ch cho ph\u00e9p ki\u1ec3m so\u00e1t truy c\u1eadp m\u1ea1ng t\u1ef1 \u0111\u1ed9ng v\u00e0 \u0111\u1ed9ng d\u1ef1a tr\u00ean c\u00e1c \u0111i\u1ec1u ki\u1ec7n th\u1eddi gian th\u1ef1c.<\/p>\n<\/li>\n<\/ol>\n<h2>Ki\u1ec3m so\u00e1t truy c\u1eadp m\u1ea1ng v\u00e0 m\u00e1y ch\u1ee7 proxy<\/h2>\n<p>M\u00e1y ch\u1ee7 proxy v\u00e0 ki\u1ec3m so\u00e1t truy c\u1eadp m\u1ea1ng c\u00f3 li\u00ean quan ch\u1eb7t ch\u1ebd v\u1edbi nhau, \u0111\u1eb7c bi\u1ec7t trong tr\u01b0\u1eddng h\u1ee3p ng\u01b0\u1eddi d\u00f9ng k\u1ebft n\u1ed1i Internet th\u00f4ng qua m\u00e1y ch\u1ee7 proxy. S\u1ef1 k\u1ebft h\u1ee3p c\u1ee7a c\u1ea3 hai c\u00f4ng ngh\u1ec7 c\u00f3 th\u1ec3 t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt v\u00e0 ki\u1ec3m so\u00e1t l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng. M\u00e1y ch\u1ee7 proxy \u0111\u00f3ng vai tr\u00f2 trung gian gi\u1eefa ng\u01b0\u1eddi d\u00f9ng v\u00e0 internet, thay m\u1eb7t ng\u01b0\u1eddi d\u00f9ng x\u1eed l\u00fd c\u00e1c y\u00eau c\u1ea7u v\u00e0 ph\u1ea3n h\u1ed3i. B\u1eb1ng c\u00e1ch k\u1ebft h\u1ee3p ki\u1ec3m so\u00e1t truy c\u1eadp m\u1ea1ng c\u00f9ng v\u1edbi m\u00e1y ch\u1ee7 proxy, c\u00e1c t\u1ed5 ch\u1ee9c c\u00f3 th\u1ec3 tri\u1ec3n khai l\u1edbp x\u00e1c th\u1ef1c v\u00e0 \u1ee7y quy\u1ec1n b\u1ed5 sung cho ng\u01b0\u1eddi d\u00f9ng \u0111ang t\u00ecm ki\u1ebfm quy\u1ec1n truy c\u1eadp internet.<\/p>\n<p>Khi n\u00f3i \u0111\u1ebfn OneProxy (oneproxy.pro), nh\u00e0 cung c\u1ea5p m\u00e1y ch\u1ee7 proxy h\u00e0ng \u0111\u1ea7u, vi\u1ec7c t\u00edch h\u1ee3p ki\u1ec3m so\u00e1t truy c\u1eadp m\u1ea1ng c\u00f3 th\u1ec3 t\u0103ng c\u01b0\u1eddng t\u00ednh b\u1ea3o m\u1eadt v\u00e0 \u0111\u1ed9 tin c\u1eady cho d\u1ecbch v\u1ee5 c\u1ee7a h\u1ecd. B\u1eb1ng c\u00e1ch th\u1ef1c thi c\u00e1c ch\u00ednh s\u00e1ch truy c\u1eadp \u1edf c\u1ea5p m\u00e1y ch\u1ee7 proxy, OneProxy c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng ch\u1ec9 nh\u1eefng ng\u01b0\u1eddi d\u00f9ng \u0111\u01b0\u1ee3c \u1ee7y quy\u1ec1n m\u1edbi c\u00f3 th\u1ec3 t\u1eadn d\u1ee5ng c\u00e1c d\u1ecbch v\u1ee5 proxy c\u1ee7a h\u1ecd, gi\u1ea3m thi\u1ec3u nguy c\u01a1 l\u1ea1m d\u1ee5ng ho\u1eb7c truy c\u1eadp tr\u00e1i ph\u00e9p.<\/p>\n<h2>Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n<p>\u0110\u1ec3 bi\u1ebft th\u00eam th\u00f4ng tin v\u1ec1 ki\u1ec3m so\u00e1t truy c\u1eadp m\u1ea1ng, b\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o c\u00e1c t\u00e0i nguy\u00ean sau:<\/p>\n<ol>\n<li><a href=\"https:\/\/nvlpubs.nist.gov\/nistpubs\/specialpublications\/nist.sp.800-82r2.pdf\" target=\"_new\" rel=\"noopener nofollow\">\u1ea4n b\u1ea3n \u0111\u1eb7c bi\u1ec7t 800-82 c\u1ee7a NIST: H\u01b0\u1edbng d\u1eabn v\u1ec1 b\u1ea3o m\u1eadt h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n c\u00f4ng nghi\u1ec7p (ICS)<\/a><\/li>\n<li><a href=\"https:\/\/www.cisco.com\/c\/en\/us\/products\/security\/identity-services-engine\/index.html\" target=\"_new\" rel=\"noopener nofollow\">T\u1ed5ng quan v\u1ec1 C\u00f4ng c\u1ee5 d\u1ecbch v\u1ee5 nh\u1eadn d\u1ea1ng c\u1ee7a Cisco (ISE)<\/a><\/li>\n<li><a href=\"https:\/\/www.juniper.net\/us\/en\/products-services\/security\/network-access-control\/\" target=\"_new\" rel=\"noopener nofollow\">Gi\u1ea3i ph\u00e1p Ki\u1ec3m so\u00e1t Truy c\u1eadp M\u1ea1ng (NAC) c\u1ee7a Juniper Networks<\/a><\/li>\n<li><a href=\"https:\/\/www.nist.gov\/publications\/zero-trust-architecture\" target=\"_new\" rel=\"noopener nofollow\">Ki\u1ebfn tr\u00fac Zero Trust: Gi\u1edbi thi\u1ec7u<\/a><\/li>\n<li><a href=\"https:\/\/www.opennetworking.org\/sdn-resources\/sdn-definition\/\" target=\"_new\" rel=\"noopener nofollow\">Gi\u1ea3i th\u00edch v\u1ec1 M\u1ea1ng \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1eb1ng ph\u1ea7n m\u1ec1m (SDN)<\/a><\/li>\n<\/ol>","protected":false},"featured_media":478121,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-478120","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Network Access Control: Safeguarding Online Connectivity<\/mark>","faq_items":[{"question":"What is Network Access Control (NAC)?","answer":"<p>Network Access Control (NAC) is a vital security measure that regulates and controls access to computer networks based on predefined policies. It ensures that only authorized users and devices can access the network while enhancing protection against cyber threats and data breaches.<\/p>"},{"question":"How did Network Access Control evolve over time?","answer":"<p>Network Access Control has its roots in the early days of computer networking, around the 1970s and 1980s. Initially, it relied on static access lists managed manually. As networks grew complex, modern NAC systems with centralized and automated controls emerged to manage access efficiently.<\/p>"},{"question":"How does Network Access Control work?","answer":"<p>NAC operates by verifying the identity of users and devices seeking network access through authentication. Once authenticated, the system checks their access rights through authorization policies. Enforcement points in the network then implement the access control policies.<\/p>"},{"question":"What are the key features of Network Access Control?","answer":"<p>Some key features of NAC include enhanced security, guest access management, endpoint compliance checks, user profiling, real-time monitoring, and centralized policy management.<\/p>"},{"question":"What are the different types of Network Access Control?","answer":"<p>NAC solutions can be categorized into several types, such as Endpoint NAC, 802.1X NAC, Pre-Admission NAC, Post-Admission NAC, Agent-Based NAC, and Agentless NAC, each catering to specific deployment and functionality needs.<\/p>"},{"question":"How is Network Access Control used in real-world scenarios?","answer":"<p>NAC finds application in various scenarios, such as securing enterprise networks, providing controlled guest access, managing BYOD policies, and ensuring IoT network security.<\/p>"},{"question":"What challenges can arise when implementing Network Access Control?","answer":"<p>Implementing NAC can be complex, especially in large-scale networks, and integrating it with existing infrastructure requires careful planning. Striking a balance between security and user experience can also be challenging.<\/p>"},{"question":"What does the future hold for Network Access Control?","answer":"<p>The future of NAC looks promising with the advent of technologies like Zero Trust Architecture, AI and machine learning integration, blockchain-based NAC, and Software-Defined Networking (SDN).<\/p>"},{"question":"How is Network Access Control associated with OneProxy?","answer":"<p>Network Access Control complements the services of proxy servers like OneProxy by adding an extra layer of authentication and authorization, ensuring only authorized users can access proxy services securely.<\/p>"},{"question":"Where can I find more information about Network Access Control?","answer":"<p>For further insights into Network Access Control, you can explore the provided links and resources, including NIST publications, Cisco Identity Services Engine, Juniper Networks Network Access Control, and informative articles on Zero Trust Architecture and Software-Defined Networking.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/478120","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\/478120\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/478121"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=478120"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}