{"id":477250,"date":"2023-08-09T09:09:43","date_gmt":"2023-08-09T09:09:43","guid":{"rendered":"https:\/\/oneproxy.pro\/wiki\/firewalls\/"},"modified":"2023-09-05T11:14:22","modified_gmt":"2023-09-05T11:14:22","slug":"firewalls","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/firewalls\/","title":{"rendered":"T\u01b0\u1eddng l\u1eeda"},"content":{"rendered":"

T\u01b0\u1eddng l\u1eeda l\u00e0 h\u1ec7 th\u1ed1ng b\u1ea3o m\u1eadt m\u1ea1ng quan tr\u1ecdng, gi\u00e1m s\u00e1t v\u00e0 ki\u1ec3m so\u00e1t l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng \u0111\u1ebfn v\u00e0 \u0111i d\u1ef1a tr\u00ean c\u00e1c quy t\u1eafc b\u1ea3o m\u1eadt \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc. Ch\u00fang \u0111\u00f3ng vai tr\u00f2 l\u00e0 r\u00e0o c\u1ea3n gi\u1eefa c\u00e1c m\u1ea1ng n\u1ed9i b\u1ed9 \u0111\u00e1ng tin c\u1eady v\u00e0 c\u00e1c m\u1ea1ng b\u00ean ngo\u00e0i kh\u00f4ng \u0111\u00e1ng tin c\u1eady nh\u01b0 Internet.<\/p>\n

Truy t\u00ecm d\u00f2ng d\u00f5i: L\u1ecbch s\u1eed v\u00e0 l\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u1ec1 c\u1eadp \u0111\u1ebfn t\u01b0\u1eddng l\u1eeda<\/h2>\n

Ngu\u1ed3n g\u1ed1c c\u1ee7a t\u01b0\u1eddng l\u1eeda b\u1eaft ngu\u1ed3n t\u1eeb cu\u1ed1i nh\u1eefng n\u0103m 1980 khi Internet b\u1eaft \u0111\u1ea7u tr\u1edf n\u00ean ph\u1ed5 bi\u1ebfn, \u0111\u00f2i h\u1ecfi ph\u1ea3i c\u00f3 b\u1ea3o m\u1eadt m\u1ea1ng m\u1ea1nh m\u1ebd. Thu\u1eadt ng\u1eef 't\u01b0\u1eddng l\u1eeda' ban \u0111\u1ea7u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 m\u00f4 t\u1ea3 m\u1ed9t b\u1ee9c t\u01b0\u1eddng \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng \u0111\u1ec3 ng\u0103n ch\u1eb7n s\u1ef1 lan r\u1ed9ng c\u1ee7a l\u1eeda. Trong b\u1ed1i c\u1ea3nh an ninh m\u1ea1ng, thu\u1eadt ng\u1eef n\u00e0y l\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong b\u00e1o c\u00e1o c\u1ee7a DEC (T\u1eadp \u0111o\u00e0n Thi\u1ebft b\u1ecb K\u1ef9 thu\u1eadt s\u1ed1) v\u00e0o n\u0103m 1988. Khi m\u1ea1ng m\u00e1y t\u00ednh ng\u00e0y c\u00e0ng ph\u1ee9c t\u1ea1p v\u00e0 d\u1ec5 b\u1ecb t\u1ea5n c\u00f4ng, nhu c\u1ea7u b\u1ea3o m\u1eadt t\u1ed1t h\u01a1n \u0111\u00e3 d\u1eabn \u0111\u1ebfn s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a th\u1ebf h\u1ec7 t\u01b0\u1eddng l\u1eeda \u0111\u1ea7u ti\u00ean, \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 b\u1ed9 l\u1ecdc g\u00f3i.<\/p>\n

M\u1edf r\u1ed9ng hi\u1ec3u bi\u1ebft: Th\u00f4ng tin chi ti\u1ebft v\u1ec1 T\u01b0\u1eddng l\u1eeda<\/h2>\n

T\u01b0\u1eddng l\u1eeda ho\u1ea1t \u0111\u1ed9ng nh\u01b0 tuy\u1ebfn ph\u00f2ng th\u1ee7 \u0111\u1ea7u ti\u00ean trong c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng an ninh m\u1ea1ng. H\u1ecd gi\u00e1m s\u00e1t t\u1ea5t c\u1ea3 l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp m\u1ea1ng, ch\u1eb7n ho\u1eb7c cho ph\u00e9p l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp d\u1ef1a tr\u00ean c\u00e1c quy t\u1eafc v\u00e0 ch\u00ednh s\u00e1ch b\u1ea3o m\u1eadt c\u1ee7a t\u01b0\u1eddng l\u1eeda. V\u1ec1 c\u01a1 b\u1ea3n, ch\u00fang gi\u1ed1ng nh\u01b0 m\u1ed9t nh\u00e2n vi\u00ean b\u1ea3o v\u1ec7, r\u00e0 so\u00e1t k\u1ef9 l\u01b0\u1ee1ng t\u1eebng g\u00f3i d\u1eef li\u1ec7u ra v\u00e0o m\u1ea1ng.<\/p>\n

T\u01b0\u1eddng l\u1eeda c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c tri\u1ec3n khai b\u1eb1ng ph\u1ea7n c\u1ee9ng ho\u1eb7c ph\u1ea7n m\u1ec1m ho\u1eb7c k\u1ebft h\u1ee3p c\u1ea3 hai. Ch\u00fang b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u kh\u1ecfi c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng \u0111\u1ed9c h\u1ea1i, cung c\u1ea5p ph\u01b0\u01a1ng ti\u1ec7n \u0111\u1ec3 tri\u1ec3n khai v\u00e0 th\u1ef1c thi c\u00e1c ch\u00ednh s\u00e1ch b\u1ea3o m\u1eadt, \u0111\u1ed3ng th\u1eddi c\u00f3 th\u1ec3 ghi nh\u1eadt k\u00fd v\u00e0 b\u00e1o c\u00e1o v\u1ec1 d\u1eef li\u1ec7u v\u00e0o v\u00e0 ra kh\u1ecfi m\u1ea1ng.<\/p>\n

Nh\u00ecn v\u00e0o b\u00ean trong: C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a T\u01b0\u1eddng l\u1eeda v\u00e0 ch\u1ee9c n\u0103ng c\u1ee7a ch\u00fang<\/h2>\n

\u1ede m\u1ee9c \u0111\u1ed9 cao, t\u01b0\u1eddng l\u1eeda ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch ki\u1ec3m tra c\u00e1c g\u00f3i d\u1eef li\u1ec7u (c\u00e1c kh\u1ed1i d\u1eef li\u1ec7u nh\u1ecf) v\u00e0 x\u00e1c \u0111\u1ecbnh xem n\u00ean cho ch\u00fang \u0111i qua hay ch\u1eb7n ch\u00fang d\u1ef1a tr\u00ean c\u00e1c quy t\u1eafc hi\u1ec7n h\u00e0nh. C\u00e1c quy t\u1eafc n\u00e0y c\u00f3 th\u1ec3 kh\u00e1 ph\u1ee9c t\u1ea1p, bao g\u1ed3m c\u00e1c tham s\u1ed1 nh\u01b0 \u0111\u1ecba ch\u1ec9 IP, t\u00ean mi\u1ec1n, giao th\u1ee9c, ch\u01b0\u01a1ng tr\u00ecnh v\u00e0 c\u1ed5ng.<\/p>\n

Trong n\u1ed9i b\u1ed9, c\u1ea5u tr\u00fac c\u1ee7a t\u01b0\u1eddng l\u1eeda ph\u1ee5 thu\u1ed9c v\u00e0o lo\u1ea1i c\u1ee7a n\u00f3, m\u1ed7i lo\u1ea1i cung c\u1ea5p c\u00e1c m\u1ee9c \u0111\u1ed9 b\u1ea3o m\u1eadt kh\u00e1c nhau v\u00e0 ho\u1ea1t \u0111\u1ed9ng kh\u00e1c nhau:<\/p>\n

    \n
  1. T\u01b0\u1eddng l\u1eeda l\u1ecdc g\u00f3i:<\/strong> H\u00ecnh th\u1ee9c c\u01a1 b\u1ea3n nh\u1ea5t c\u1ee7a t\u01b0\u1eddng l\u1eeda. H\u1ecd ki\u1ec3m tra c\u00e1c g\u00f3i v\u00e0 ng\u0103n ch\u00fang \u0111i qua n\u1ebfu ch\u00fang kh\u00f4ng kh\u1edbp v\u1edbi b\u1ed9 quy t\u1eafc c\u1ee7a t\u01b0\u1eddng l\u1eeda.<\/li>\n
  2. T\u01b0\u1eddng l\u1eeda ki\u1ec3m tra tr\u1ea1ng th\u00e1i:<\/strong> H\u1ecd gi\u00e1m s\u00e1t tr\u1ea1ng th\u00e1i c\u1ee7a c\u00e1c k\u1ebft n\u1ed1i \u0111ang ho\u1ea1t \u0111\u1ed9ng v\u00e0 s\u1eed d\u1ee5ng th\u00f4ng tin n\u00e0y \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh g\u00f3i m\u1ea1ng n\u00e0o \u0111\u01b0\u1ee3c ph\u00e9p.<\/li>\n
  3. T\u01b0\u1eddng l\u1eeda proxy:<\/strong> Ch\u00fang \u0111\u00f3ng vai tr\u00f2 l\u00e0 c\u1eeda ng\u00f5 gi\u1eefa c\u00e1c m\u1ea1ng, ph\u00e1 v\u1ee1 v\u00e0 sau \u0111\u00f3 thi\u1ebft l\u1eadp l\u1ea1i c\u00e1c k\u1ebft n\u1ed1i.<\/li>\n
  4. T\u01b0\u1eddng l\u1eeda th\u1ebf h\u1ec7 ti\u1ebfp theo (NGFW):<\/strong> \u0110\u00e2y l\u00e0 nh\u1eefng t\u01b0\u1eddng l\u1eeda ti\u00ean ti\u1ebfn h\u01a1n c\u00f3 ch\u1ee9c n\u0103ng b\u1ed5 sung, ch\u1eb3ng h\u1ea1n nh\u01b0 h\u1ec7 th\u1ed1ng ng\u0103n ch\u1eb7n x\u00e2m nh\u1eadp (IPS) v\u00e0 proxy TLS\/SSL, \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh v\u00e0 ch\u1eb7n c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng tinh vi.<\/li>\n<\/ol>\n

    N\u00eau b\u1eadt nh\u1eefng \u0111i\u1ec3m n\u1ed5i b\u1eadt: C\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a T\u01b0\u1eddng l\u1eeda<\/h2>\n
      \n
    1. L\u1ecdc g\u00f3i:<\/strong> T\u01b0\u1eddng l\u1eeda xem x\u00e9t t\u1eebng g\u00f3i v\u00e0o ho\u1eb7c ra kh\u1ecfi m\u1ea1ng, \u0111\u1ea3m b\u1ea3o n\u00f3 tu\u00e2n th\u1ee7 ch\u00ednh s\u00e1ch \u0111\u00e3 x\u00e1c \u0111\u1ecbnh.<\/li>\n
    2. X\u00e1c minh \u0111\u1ecba ch\u1ec9 IP:<\/strong> T\u01b0\u1eddng l\u1eeda x\u00e1c minh \u0111\u1ecba ch\u1ec9 IP c\u1ee7a c\u00e1c g\u00f3i, \u0111\u1ea3m b\u1ea3o ch\u00fang c\u00f3 ngu\u1ed3n g\u1ed1c t\u1eeb c\u00e1c ngu\u1ed3n h\u1ee3p ph\u00e1p.<\/li>\n
    3. Ch\u1eb7n t\u00ean mi\u1ec1n:<\/strong> H\u1ecd c\u00f3 th\u1ec3 ch\u1eb7n l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp t\u1eeb c\u00e1c t\u00ean mi\u1ec1n c\u1ee5 th\u1ec3.<\/li>\n
    4. L\u1ecdc n\u1ed9i dung:<\/strong> M\u1ed9t s\u1ed1 t\u01b0\u1eddng l\u1eeda c\u00f3 th\u1ec3 l\u1ecdc d\u1eef li\u1ec7u g\u1eedi \u0111i \u0111\u1ec3 ng\u0103n ch\u1eb7n r\u00f2 r\u1ec9 d\u1eef li\u1ec7u.<\/li>\n
    5. Ng\u0103n ch\u1eb7n \u0111\u0103ng nh\u1eadp t\u1eeb xa:<\/strong> T\u01b0\u1eddng l\u1eeda h\u1ea1n ch\u1ebf \u0111\u0103ng nh\u1eadp t\u1eeb xa tr\u00e1i ph\u00e9p.<\/li>\n
    6. Ph\u00e1t hi\u1ec7n v\u00e0 ng\u0103n ch\u1eb7n s\u1ef1 x\u00e2m nh\u1eadp:<\/strong> T\u01b0\u1eddng l\u1eeda ti\u00ean ti\u1ebfn c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n v\u00e0 ng\u0103n ch\u1eb7n c\u00e1c n\u1ed7 l\u1ef1c x\u00e2m nh\u1eadp.<\/li>\n<\/ol>\n

      C\u00e1c bi\u1ec7n ph\u00e1p kh\u00e1c nhau d\u00e0nh cho nh\u1eefng ng\u01b0\u1eddi kh\u00e1c nhau: C\u00e1c lo\u1ea1i t\u01b0\u1eddng l\u1eeda<\/h2>\n\n\n\n\n\n\n\n\n\n
      Lo\u1ea1i t\u01b0\u1eddng l\u1eeda<\/th>\nS\u1ef1 mi\u00eau t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n
      T\u01b0\u1eddng l\u1eeda l\u1ecdc g\u00f3i<\/td>\nHo\u1ea1t \u0111\u1ed9ng tr\u00ean l\u1edbp \u0111\u1ea7u ti\u00ean c\u1ee7a ng\u0103n x\u1ebfp TCP\/IP, ki\u1ec3m tra c\u00e1c g\u00f3i theo quy t\u1eafc \u0111\u00e3 \u0111\u1eb7t.<\/td>\n<\/tr>\n
      C\u1ed5ng c\u1ea5p m\u1ea1ch<\/td>\nHo\u1ea1t \u0111\u1ed9ng tr\u00ean l\u1edbp th\u1ee9 hai c\u1ee7a ng\u0103n x\u1ebfp TCP\/IP, x\u00e1c minh b\u1eaft tay TCP.<\/td>\n<\/tr>\n
      T\u01b0\u1eddng l\u1eeda ki\u1ec3m tra tr\u1ea1ng th\u00e1i<\/td>\nGi\u00e1m s\u00e1t to\u00e0n b\u1ed9 phi\u00ean TCP trong khi theo d\u00f5i c\u00e1c g\u00f3i.<\/td>\n<\/tr>\n
      C\u1ed5ng c\u1ea5p \u1ee9ng d\u1ee5ng (T\u01b0\u1eddng l\u1eeda proxy)<\/td>\nKi\u1ec3m tra c\u00e1c g\u00f3i \u1edf l\u1edbp \u1ee9ng d\u1ee5ng c\u1ee7a ng\u0103n x\u1ebfp TCP\/IP.<\/td>\n<\/tr>\n
      T\u01b0\u1eddng l\u1eeda th\u1ebf h\u1ec7 ti\u1ebfp theo<\/td>\nCung c\u1ea5p m\u1ed9t lo\u1ea1t c\u00e1c kh\u1ea3 n\u0103ng l\u1ecdc l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng ti\u00ean ti\u1ebfn.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      \u1ee8ng d\u1ee5ng, th\u00e1ch th\u1ee9c v\u00e0 gi\u1ea3i ph\u00e1p<\/h2>\n

      T\u01b0\u1eddng l\u1eeda r\u1ea5t quan tr\u1ecdng trong vi\u1ec7c thi\u1ebft l\u1eadp c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng an to\u00e0n cho doanh nghi\u1ec7p, b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u nh\u1ea1y c\u1ea3m v\u00e0 tu\u00e2n th\u1ee7 c\u00e1c quy \u0111\u1ecbnh kh\u00e1c nhau. Ch\u00fang c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong nh\u00e0 \u0111\u1ec3 b\u1ea3o m\u1eadt m\u1ea1ng v\u00e0 thi\u1ebft b\u1ecb c\u00e1 nh\u00e2n.<\/p>\n

      Tuy nhi\u00ean, vi\u1ec7c s\u1eed d\u1ee5ng t\u01b0\u1eddng l\u1eeda c\u00f3 th\u1ec3 \u0111\u1eb7t ra nh\u1eefng th\u00e1ch th\u1ee9c. M\u1ed9t th\u00e1ch th\u1ee9c l\u00e0 t\u01b0\u1eddng l\u1eeda c\u00f3 th\u1ec3 ch\u1eb7n l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp mong mu\u1ed1n, d\u1eabn \u0111\u1ebfn gi\u00e1n \u0111o\u1ea1n d\u1ecbch v\u1ee5. S\u1ef1 ph\u1ee9c t\u1ea1p c\u1ee7a vi\u1ec7c qu\u1ea3n l\u00fd c\u00e1c quy t\u1eafc t\u01b0\u1eddng l\u1eeda c\u0169ng c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t nhi\u1ec7m v\u1ee5 quan tr\u1ecdng \u0111\u1ed1i v\u1edbi qu\u1ea3n tr\u1ecb vi\u00ean. Ngo\u00e0i ra, khi t\u01b0\u1eddng l\u1eeda tr\u1edf n\u00ean ph\u1ee9c t\u1ea1p h\u01a1n, hi\u1ec7u su\u1ea5t c\u1ee7a ch\u00fang c\u00f3 th\u1ec3 b\u1ecb \u1ea3nh h\u01b0\u1edfng, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 m\u1ea1ng.<\/p>\n

      C\u00e1c gi\u1ea3i ph\u00e1p li\u00ean quan \u0111\u1ebfn vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 qu\u1ea3n l\u00fd t\u01b0\u1eddng l\u1eeda, c\u00f3 th\u1ec3 gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a nhi\u1ec7m v\u1ee5 \u0111\u1ecbnh c\u1ea5u h\u00ecnh v\u00e0 qu\u1ea3n l\u00fd c\u00e1c quy t\u1eafc t\u01b0\u1eddng l\u1eeda. C\u00e1c doanh nghi\u1ec7p c\u0169ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng t\u01b0\u1eddng l\u1eeda th\u1ebf h\u1ec7 ti\u1ebfp theo k\u1ebft h\u1ee3p kh\u1ea3 n\u0103ng t\u01b0\u1eddng l\u1eeda truy\u1ec1n th\u1ed1ng v\u1edbi c\u00e1c ch\u1ee9c n\u0103ng b\u1ed5 sung \u0111\u1ec3 n\u00e2ng cao hi\u1ec7u su\u1ea5t v\u00e0 b\u1ea3o m\u1eadt.<\/p>\n

      So s\u00e1nh v\u00e0 \u0111\u1ed1i chi\u1ebfu: \u0110\u1eb7c \u0111i\u1ec3m ch\u00ednh<\/h2>\n

      D\u01b0\u1edbi \u0111\u00e2y l\u00e0 so s\u00e1nh t\u01b0\u1eddng l\u1eeda v\u1edbi c\u00e1c thu\u1eadt ng\u1eef t\u01b0\u01a1ng t\u1ef1 kh\u00e1c:<\/p>\n\n\n\n\n\n\n\n\n
      Thu\u1eadt ng\u1eef<\/th>\nS\u1ef1 mi\u00eau t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n
      B\u1ee9c t\u01b0\u1eddng l\u1eeda<\/td>\nH\u1ec7 th\u1ed1ng an ninh m\u1ea1ng gi\u00e1m s\u00e1t v\u00e0 ki\u1ec3m so\u00e1t l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng.<\/td>\n<\/tr>\n
      B\u1ed9 \u0111\u1ecbnh tuy\u1ebfn<\/td>\nThi\u1ebft b\u1ecb ph\u1ea7n c\u1ee9ng \u0111i\u1ec1u h\u01b0\u1edbng l\u01b0u l\u01b0\u1ee3ng gi\u1eefa c\u00e1c m\u1ea1ng.<\/td>\n<\/tr>\n
      M\u00e1y ch\u1ee7 proxy<\/td>\nHo\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t c\u1ed5ng k\u1ebft n\u1ed1i gi\u1eefa ng\u01b0\u1eddi d\u00f9ng v\u00e0 internet, cung c\u1ea5p th\u00eam t\u00ednh b\u1ea3o m\u1eadt v\u00e0 quy\u1ec1n ri\u00eang t\u01b0.<\/td>\n<\/tr>\n
      H\u1ec7 th\u1ed1ng ng\u0103n ch\u1eb7n x\u00e2m nh\u1eadp (IPS)<\/td>\nThi\u1ebft b\u1ecb an ninh m\u1ea1ng gi\u00e1m s\u00e1t c\u00e1c ho\u1ea1t \u0111\u1ed9ng m\u1ea1ng v\u00e0\/ho\u1eb7c h\u1ec7 th\u1ed1ng \u0111\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c ho\u1ea1t \u0111\u1ed9ng \u0111\u1ed9c h\u1ea1i.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      Nh\u00ecn v\u00e0o qu\u1ea3 c\u1ea7u pha l\u00ea: T\u01b0\u01a1ng lai c\u1ee7a t\u01b0\u1eddng l\u1eeda<\/h2>\n

      T\u01b0\u01a1ng lai c\u1ee7a t\u01b0\u1eddng l\u1eeda n\u1eb1m \u1edf s\u1ef1 ph\u00e1t tri\u1ec3n li\u00ean t\u1ee5c c\u1ee7a ch\u00fang \u0111\u1ec3 theo k\u1ecbp c\u00e1c c\u00f4ng ngh\u1ec7 m\u1edbi v\u00e0 c\u00e1c vect\u01a1 \u0111e d\u1ecda. C\u00e1c xu h\u01b0\u1edbng nh\u01b0 tr\u00ed tu\u1ec7 nh\u00e2n t\u1ea1o v\u00e0 h\u1ecdc m\u00e1y \u0111ang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ef1 \u0111\u1ed9ng h\u00f3a v\u00e0 c\u1ea3i thi\u1ec7n vi\u1ec7c qu\u1ea3n l\u00fd t\u01b0\u1eddng l\u1eeda c\u0169ng nh\u01b0 n\u00e2ng cao kh\u1ea3 n\u0103ng ph\u00e1t hi\u1ec7n m\u1ed1i \u0111e d\u1ecda. T\u01b0\u1eddng l\u1eeda c\u0169ng \u0111ang chuy\u1ec3n sang \u0111\u00e1m m\u00e2y, v\u1edbi c\u00e1c d\u1ecbch v\u1ee5 t\u01b0\u1eddng l\u1eeda g\u1ed1c \u0111\u00e1m m\u00e2y cung c\u1ea5p kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng, t\u00ednh linh ho\u1ea1t v\u00e0 t\u00edch h\u1ee3p v\u1edbi c\u00e1c d\u1ecbch v\u1ee5 \u0111\u00e1m m\u00e2y.<\/p>\n

      M\u00e1y ch\u1ee7 proxy v\u00e0 t\u01b0\u1eddng l\u1eeda: Hi\u1ec7p h\u1ed9i hi\u1ec7p l\u1ef1c<\/h2>\n

      M\u00e1y ch\u1ee7 proxy v\u00e0 t\u01b0\u1eddng l\u1eeda th\u01b0\u1eddng ph\u1ed1i h\u1ee3p v\u1edbi nhau \u0111\u1ec3 cung c\u1ea5p c\u00e1ch ti\u1ebfp c\u1eadn theo l\u1edbp cho b\u1ea3o m\u1eadt m\u1ea1ng. M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 t\u1ef1 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t t\u01b0\u1eddng l\u1eeda, ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t c\u1ed5ng k\u1ebft n\u1ed1i gi\u1eefa m\u1ea1ng c\u1ee5c b\u1ed9 v\u00e0 m\u1ea1ng quy m\u00f4 l\u1edbn. N\u00f3 c\u00f3 th\u1ec3 cung c\u1ea5p c\u00e1c t\u00ednh n\u0103ng b\u1ed5 sung nh\u01b0 l\u1ecdc n\u1ed9i dung v\u00e0 l\u1ee3i \u00edch v\u1ec1 quy\u1ec1n ri\u00eang t\u01b0 b\u1eb1ng c\u00e1ch che gi\u1ea5u \u0111\u1ecba ch\u1ec9 IP c\u1ee7a ng\u01b0\u1eddi d\u00f9ng. T\u01b0\u1eddng l\u1eeda c\u00f3 th\u1ec3 b\u1ed5 sung \u0111i\u1ec1u n\u00e0y b\u1eb1ng c\u00e1ch cung c\u1ea5p m\u1ed9t l\u1edbp b\u1ea3o m\u1eadt kh\u00e1c, gi\u00e1m s\u00e1t v\u00e0 ki\u1ec3m so\u00e1t l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng d\u1ef1a tr\u00ean c\u00e1c quy t\u1eafc b\u1ea3o m\u1eadt.<\/p>\n

      Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n
        \n
      1. T\u01b0\u1eddng l\u1eeda l\u00e0 g\u00ec? \u2013 Cisco<\/a><\/li>\n
      2. T\u00ecm hi\u1ec3u t\u01b0\u1eddng l\u1eeda \u2013 US-CERT<\/a><\/li>\n
      3. T\u01b0\u1eddng l\u1eeda (m\u00e1y t\u00ednh) - Wikipedia<\/a><\/li>\n
      4. T\u01b0\u1eddng l\u1eeda \u2013 Webopedia<\/a><\/li>\n
      5. C\u00e1c lo\u1ea1i t\u01b0\u1eddng l\u1eeda v\u00e0 c\u00e1ch ch\u00fang ho\u1ea1t \u0111\u1ed9ng \u2013 GeeksforGeeks<\/a><\/li>\n<\/ol>","protected":false},"featured_media":468413,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-477250","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about Firewalls: Essential Shields of Network Security<\/mark>","faq_items":[{"question":"What are firewalls in the context of network security?","answer":"

        Firewalls are network security systems that monitor and control incoming and outgoing network traffic based on predetermined security rules. They act as a barrier between a trusted internal network and untrusted external networks like the Internet.<\/p>"},{"question":"When was the term 'firewall' first used in network security?","answer":"

        The term 'firewall' was first used in a network security context in a report by Digital Equipment Corporation (DEC) in 1988.<\/p>"},{"question":"What are the key features of firewalls?","answer":"

        Firewalls have several key features. They filter packets, verify IP addresses, block specific domains, filter outgoing data to prevent data leaks, restrict unauthorized remote logins, and detect and prevent intrusion attempts.<\/p>"},{"question":"How do firewalls work?","answer":"

        Firewalls work by inspecting data packets and deciding whether to let them pass or block them based on the rules in place. These rules can be complex, including parameters like IP addresses, domain names, protocols, programs, and ports.<\/p>"},{"question":"What are the different types of firewalls?","answer":"

        The types of firewalls include Packet-Filtering Firewalls, Circuit-Level Gateways, Stateful Inspection Firewalls, Application-Level Gateways (also known as Proxy Firewalls), and Next-Generation Firewalls.<\/p>"},{"question":"What are some applications and challenges of using firewalls?","answer":"

        Firewalls are essential for establishing secure infrastructure in businesses and homes. They protect sensitive data and comply with various regulations. However, firewalls can pose challenges like blocking wanted traffic, complexity in managing rules, and performance issues due to their complex nature.<\/p>"},{"question":"How do firewalls differ from routers, proxy servers, and intrusion prevention systems?","answer":"

        A firewall is a network security system that controls network traffic, whereas a router is a device that directs traffic between networks. A proxy server acts as a gateway between the user and the internet, providing additional security and privacy, while an intrusion prevention system is a network security appliance that monitors for malicious activities.<\/p>"},{"question":"What are some future trends in firewall technology?","answer":"

        Future trends in firewall technology include the use of artificial intelligence and machine learning for improved threat detection and firewall management, as well as the development of cloud-native firewall services for better scalability, flexibility, and integration with cloud services.<\/p>"},{"question":"How do proxy servers work with firewalls?","answer":"

        Proxy servers and firewalls often work together to provide a layered approach to network security. A proxy server can act as a gateway between a local network and large-scale networks, providing additional features like content filtering and privacy benefits, while a firewall provides another layer of security, monitoring and controlling network traffic based on security rules.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/477250","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\/477250\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/468413"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=477250"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}