{"id":477247,"date":"2023-08-09T09:09:43","date_gmt":"2023-08-09T09:09:43","guid":{"rendered":"https:\/\/oneproxy.pro\/wiki\/firewall\/"},"modified":"2023-09-05T11:14:22","modified_gmt":"2023-09-05T11:14:22","slug":"firewall","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/firewall\/","title":{"rendered":"B\u1ee9c t\u01b0\u1eddng l\u1eeda"},"content":{"rendered":"<p>T\u01b0\u1eddng l\u1eeda l\u00e0 m\u1ed9t ph\u1ea7n quan tr\u1ecdng trong b\u1ed1i c\u1ea3nh an ninh m\u1ea1ng, b\u1ea3o v\u1ec7 m\u1ea1ng kh\u1ecfi nhi\u1ec1u lo\u1ea1i ho\u1ea1t \u0111\u1ed9ng \u0111\u1ed9c h\u1ea1i kh\u00e1c nhau. Ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t r\u00e0o c\u1ea3n \u1ea3o, t\u01b0\u1eddng l\u1eeda s\u1ebd xem x\u00e9t k\u1ef9 l\u01b0\u1ee1ng l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp v\u00e0o v\u00e0 ra, ch\u1ec9 cho ph\u00e9p d\u1eef li\u1ec7u \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau ch\u00ed b\u1ea3o m\u1eadt \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc.<\/p>\n<h2>S\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a t\u01b0\u1eddng l\u1eeda: Nh\u00ecn l\u1ea1i th\u1eddi gian<\/h2>\n<p>Kh\u00e1i ni\u1ec7m t\u01b0\u1eddng l\u1eeda b\u1eaft ngu\u1ed3n t\u1eeb c\u1ea5u tr\u00fac v\u1eadt l\u00fd \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 h\u1ea1n ch\u1ebf s\u1ef1 lan truy\u1ec1n c\u1ee7a l\u1eeda trong c\u00e1c t\u00f2a nh\u00e0. Trong l\u0129nh v\u1ef1c an ninh m\u1ea1ng, thu\u1eadt ng\u1eef \u201ct\u01b0\u1eddng l\u1eeda\u201d l\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng v\u00e0o cu\u1ed1i nh\u1eefng n\u0103m 1980 \u0111\u1ec3 m\u00f4 t\u1ea3 m\u1ed9t h\u1ec7 th\u1ed1ng ng\u0103n ch\u1eb7n truy c\u1eadp tr\u00e1i ph\u00e9p v\u00e0o ho\u1eb7c t\u1eeb m\u1ea1ng ri\u00eang. T\u01b0\u1eddng l\u1eeda k\u1ef9 thu\u1eadt s\u1ed1 \u0111\u1ea7u ti\u00ean l\u00e0 c\u00e1c b\u1ed9 l\u1ecdc g\u00f3i kh\u00e1 c\u01a1 b\u1ea3n, ho\u1ea1t \u0111\u1ed9ng \u1edf m\u1ee9c th\u00f4 s\u01a1 b\u1eb1ng c\u00e1ch ki\u1ec3m tra c\u00e1c g\u00f3i v\u00e0 ch\u1eb7n nh\u1eefng g\u00f3i kh\u00f4ng kh\u1edbp v\u1edbi m\u1ed9t b\u1ed9 quy t\u1eafc \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc.<\/p>\n<p>Kh\u00e1i ni\u1ec7m hi\u1ec7n \u0111\u1ea1i v\u1ec1 t\u01b0\u1eddng l\u1eeda, ph\u1ee9c t\u1ea1p v\u00e0 t\u00edch h\u1ee3p h\u01a1n, \u0111\u00e3 \u0111\u01b0\u1ee3c Jeff Mogul tr\u00ecnh b\u00e0y trong b\u00e0i b\u00e1o n\u0103m 1988 c\u1ee7a \u00f4ng, \u201cH\u01b0\u1edbng t\u1edbi m\u1ed9t m\u00f4 h\u00ecnh d\u1ecbch v\u1ee5 m\u1ea1ng ph\u00f9 h\u1ee3p\u201d. Theo th\u1eddi gian, t\u01b0\u1eddng l\u1eeda \u0111\u00e3 ph\u00e1t tri\u1ec3n ng\u00e0y c\u00e0ng ph\u1ee9c t\u1ea1p, cung c\u1ea5p c\u00e1c t\u00ednh n\u0103ng n\u00e2ng cao nh\u01b0 ki\u1ec3m tra tr\u1ea1ng th\u00e1i, c\u1ed5ng c\u1ea5p \u1ee9ng d\u1ee5ng v\u00e0 h\u1ec7 th\u1ed1ng ng\u0103n ch\u1eb7n x\u00e2m nh\u1eadp.<\/p>\n<h2>C\u1ea5u tr\u00fac c\u1ee7a t\u01b0\u1eddng l\u1eeda: V\u01b0\u1ee3t ra ngo\u00e0i b\u1ec1 m\u1eb7t<\/h2>\n<p>T\u01b0\u1eddng l\u1eeda ho\u1ea1t \u0111\u1ed9ng trong m\u1ed1i li\u00ean h\u1ec7 gi\u1eefa m\u1ea1ng n\u1ed9i b\u1ed9 c\u1ee7a t\u1ed5 ch\u1ee9c v\u00e0 Internet r\u1ed9ng h\u01a1n, s\u00e0ng l\u1ecdc t\u1ea5t c\u1ea3 l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp v\u00e0o v\u00e0 ra. V\u1ec1 c\u01a1 b\u1ea3n, n\u00f3 s\u1eed d\u1ee5ng m\u1ed9t b\u1ed9 quy t\u1eafc b\u1ea3o m\u1eadt \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc \u0111\u1ec3 quy\u1ebft \u0111\u1ecbnh g\u00f3i d\u1eef li\u1ec7u n\u00e0o c\u00f3 th\u1ec3 v\u00e0o ho\u1eb7c ra kh\u1ecfi m\u1ea1ng.<\/p>\n<p>C\u1ed1t l\u00f5i c\u1ee7a m\u1ecdi t\u01b0\u1eddng l\u1eeda \u0111\u1ec1u c\u00f3 c\u00e1c b\u1ea3ng l\u01b0u tr\u1eef c\u00e1c quy t\u1eafc v\u00e0 danh s\u00e1ch c\u00e1c th\u1ef1c th\u1ec3 \u0111\u00e1ng tin c\u1eady v\u00e0 kh\u00f4ng \u0111\u00e1ng tin c\u1eady. Khi d\u1eef li\u1ec7u c\u1ed1 g\u1eafng v\u00e0o ho\u1eb7c r\u1eddi kh\u1ecfi m\u1ea1ng, t\u01b0\u1eddng l\u1eeda s\u1ebd ki\u1ec3m tra th\u00f4ng tin c\u1ee7a g\u00f3i nh\u01b0 ngu\u1ed3n, \u0111\u00edch v\u00e0 s\u1ed1 c\u1ed5ng theo c\u00e1c b\u1ea3ng v\u00e0 quy t\u1eafc c\u1ee7a n\u00f3. N\u1ebfu m\u1ed9t g\u00f3i kh\u1edbp v\u1edbi m\u1ed9t m\u1ee5c trong b\u1ea3ng th\u00ec h\u00e0nh \u0111\u1ed9ng t\u01b0\u01a1ng \u1ee9ng s\u1ebd \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n, ch\u1eb3ng h\u1ea1n nh\u01b0 cho ph\u00e9p ho\u1eb7c t\u1eeb ch\u1ed1i.<\/p>\n<p>Ngo\u00e0i ra, nhi\u1ec1u t\u01b0\u1eddng l\u1eeda hi\u1ec7n \u0111\u1ea1i s\u1eed d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p ti\u00ean ti\u1ebfn nh\u01b0 Ki\u1ec3m tra g\u00f3i s\u00e2u (DPI), cho ph\u00e9p ch\u00fang ki\u1ec3m tra d\u1eef li\u1ec7u trong g\u00f3i, cung c\u1ea5p m\u1ee9c \u0111\u1ed9 ki\u1ec3m so\u00e1t v\u00e0 b\u1ea3o m\u1eadt cao h\u01a1n.<\/p>\n<h2>Gi\u1ea3i n\u00e9n c\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a t\u01b0\u1eddng l\u1eeda<\/h2>\n<p>T\u01b0\u1eddng l\u1eeda m\u1ea1nh m\u1ebd \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p nhi\u1ec1u t\u00ednh n\u0103ng ch\u00ednh gi\u00fap n\u00f3 tr\u1edf th\u00e0nh y\u1ebfu t\u1ed1 quan tr\u1ecdng trong b\u1ea3o m\u1eadt m\u1ea1ng:<\/p>\n<ul>\n<li>\n<p><strong>L\u1ecdc g\u00f3i<\/strong>: \u0110i\u1ec1u n\u00e0y li\u00ean quan \u0111\u1ebfn vi\u1ec7c ki\u1ec3m tra c\u00e1c g\u00f3i d\u1eef li\u1ec7u \u0111i qua t\u01b0\u1eddng l\u1eeda \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh xem c\u00f3 cho ch\u00fang \u0111i qua hay kh\u00f4ng, d\u1ef1a tr\u00ean c\u00e1c quy t\u1eafc c\u1ee7a t\u01b0\u1eddng l\u1eeda.<\/p>\n<\/li>\n<li>\n<p><strong>Ki\u1ec3m tra nh\u00e0 n\u01b0\u1edbc<\/strong>: C\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 l\u1ecdc g\u00f3i \u0111\u1ed9ng, t\u00ednh n\u0103ng n\u00e0y \u0111\u01b0a vi\u1ec7c l\u1ecdc g\u00f3i ti\u1ebfn th\u00eam m\u1ed9t b\u01b0\u1edbc b\u1eb1ng c\u00e1ch ki\u1ec3m tra kh\u00f4ng ch\u1ec9 c\u00e1c g\u00f3i d\u1eef li\u1ec7u m\u00e0 c\u00f2n c\u1ea3 tr\u1ea1ng th\u00e1i c\u1ee7a k\u00eanh li\u00ean l\u1ea1c.<\/p>\n<\/li>\n<li>\n<p><strong>D\u1ecbch v\u1ee5 \u1ee7y quy\u1ec1n<\/strong>: T\u00ednh n\u0103ng n\u00e0y cho ph\u00e9p t\u01b0\u1eddng l\u1eeda ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t trung gian cho c\u00e1c y\u00eau c\u1ea7u t\u1eeb b\u00ean trong m\u1ea1ng t\u1edbi m\u1ea1ng b\u00ean ngo\u00e0i.<\/p>\n<\/li>\n<li>\n<p><strong>D\u1ecbch \u0111\u1ecba ch\u1ec9 m\u1ea1ng (NAT)<\/strong>: \u0110i\u1ec1u n\u00e0y cho ph\u00e9p nhi\u1ec1u thi\u1ebft b\u1ecb tr\u00ean m\u1ea1ng c\u1ee5c b\u1ed9 chia s\u1ebb m\u1ed9t \u0111\u1ecba ch\u1ec9 IP c\u00f4ng c\u1ed9ng duy nh\u1ea5t, do \u0111\u00f3 cung c\u1ea5p th\u00eam m\u1ed9t l\u1edbp \u1ea9n danh v\u00e0 b\u1ea3o m\u1eadt.<\/p>\n<\/li>\n<li>\n<p><strong>H\u1ed7 tr\u1ee3 M\u1ea1ng ri\u00eang \u1ea3o (VPN)<\/strong>: \u0110i\u1ec1u n\u00e0y cho ph\u00e9p k\u1ebft n\u1ed1i \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a an to\u00e0n cho ng\u01b0\u1eddi d\u00f9ng t\u1eeb xa.<\/p>\n<\/li>\n<li>\n<p><strong>H\u1ec7 th\u1ed1ng ng\u0103n ch\u1eb7n x\u00e2m nh\u1eadp (IPS)<\/strong>: Ch\u00fang c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c m\u1ed1i \u0111e d\u1ecda ti\u1ec1m \u1ea9n v\u00e0 ph\u1ea3n \u1ee9ng nhanh ch\u00f3ng \u0111\u1ec3 lo\u1ea1i b\u1ecf ch\u00fang.<\/p>\n<\/li>\n<\/ul>\n<h2>Kh\u00e1m ph\u00e1 c\u00e1c lo\u1ea1i t\u01b0\u1eddng l\u1eeda<\/h2>\n<p>C\u00f3 m\u1ed9t s\u1ed1 lo\u1ea1i t\u01b0\u1eddng l\u1eeda d\u1ef1a tr\u00ean ho\u1ea1t \u0111\u1ed9ng, c\u00e1ch tri\u1ec3n khai v\u00e0 v\u1ecb tr\u00ed c\u1ee7a ch\u00fang trong m\u1ea1ng. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 b\u1ea3ng ph\u00e2n t\u00edch m\u1ed9t s\u1ed1 lo\u1ea1i t\u01b0\u1eddng l\u1eeda ph\u1ed5 bi\u1ebfn:<\/p>\n<table>\n<thead>\n<tr>\n<th>Lo\u1ea1i t\u01b0\u1eddng l\u1eeda<\/th>\n<th>S\u1ef1 mi\u00eau t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>T\u01b0\u1eddng l\u1eeda l\u1ecdc g\u00f3i<\/td>\n<td>Lo\u1ea1i t\u01b0\u1eddng l\u1eeda s\u1edbm nh\u1ea5t, n\u00f3 ho\u1ea1t \u0111\u1ed9ng \u1edf c\u1ea5p \u0111\u1ed9 m\u1ea1ng v\u00e0 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh d\u1ef1a tr\u00ean IP ngu\u1ed3n\/\u0111\u00edch, s\u1ed1 c\u1ed5ng v\u00e0 giao th\u1ee9c.<\/td>\n<\/tr>\n<tr>\n<td>T\u01b0\u1eddng l\u1eeda ki\u1ec3m tra \u0111a l\u1edbp tr\u1ea1ng th\u00e1i (SMLI)<\/td>\n<td>C\u00e1c t\u01b0\u1eddng l\u1eeda n\u00e0y k\u1ebft h\u1ee3p c\u00e1c k\u1ef9 thu\u1eadt t\u01b0\u1eddng l\u1eeda truy\u1ec1n th\u1ed1ng v\u1edbi vi\u1ec7c ki\u1ec3m tra d\u1eef li\u1ec7u \u0111\u1ec3 cung c\u1ea5p m\u1ee9c \u0111\u1ed9 b\u1ea3o m\u1eadt cao h\u01a1n.<\/td>\n<\/tr>\n<tr>\n<td>T\u01b0\u1eddng l\u1eeda proxy<\/td>\n<td>C\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 c\u1ed5ng c\u1ea5p \u1ee9ng d\u1ee5ng, c\u00e1c t\u01b0\u1eddng l\u1eeda n\u00e0y l\u1ecdc l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng \u1edf l\u1edbp \u1ee9ng d\u1ee5ng c\u1ee7a m\u00f4 h\u00ecnh OSI.<\/td>\n<\/tr>\n<tr>\n<td>T\u01b0\u1eddng l\u1eeda th\u1ebf h\u1ec7 ti\u1ebfp theo (NGFW)<\/td>\n<td>C\u00e1c t\u01b0\u1eddng l\u1eeda ti\u00ean ti\u1ebfn n\u00e0y t\u00edch h\u1ee3p c\u00e1c kh\u1ea3 n\u0103ng c\u1ee7a t\u01b0\u1eddng l\u1eeda truy\u1ec1n th\u1ed1ng v\u1edbi c\u00e1c ch\u1ee9c n\u0103ng ch\u1ea5t l\u01b0\u1ee3ng d\u1ecbch v\u1ee5 (QoS) v\u00e0 c\u00e1c t\u00ednh n\u0103ng n\u00e2ng cao kh\u00e1c.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Tri\u1ec3n khai v\u00e0 th\u00e1ch th\u1ee9c c\u1ee7a t\u01b0\u1eddng l\u1eeda<\/h2>\n<p>T\u01b0\u1eddng l\u1eeda c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c tri\u1ec3n khai nh\u01b0 m\u1ed9t h\u1ec7 th\u1ed1ng \u0111\u1ed9c l\u1eadp, m\u1ed9t d\u1ecbch v\u1ee5 trong m\u1ed9t thi\u1ebft b\u1ecb kh\u00e1c (nh\u01b0 b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn) ho\u1eb7c d\u1ecbch v\u1ee5 d\u1ef1a tr\u00ean \u0111\u00e1m m\u00e2y. Ch\u00fang r\u1ea5t quan tr\u1ecdng trong vi\u1ec7c b\u1ea3o v\u1ec7 chu vi m\u1ea1ng, b\u1ea3o m\u1eadt c\u00e1c ph\u00e2n \u0111o\u1ea1n m\u1ea1ng n\u1ed9i b\u1ed9 v\u00e0 che ch\u1eafn c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u.<\/p>\n<p>Tuy nhi\u00ean, vi\u1ec7c tri\u1ec3n khai v\u00e0 qu\u1ea3n l\u00fd t\u01b0\u1eddng l\u1eeda c\u00f3 nhi\u1ec1u th\u00e1ch th\u1ee9c. \u0110i\u1ec1u c\u1ea7n thi\u1ebft l\u00e0 ph\u1ea3i c\u1eadp nh\u1eadt c\u00e1c quy t\u1eafc t\u01b0\u1eddng l\u1eeda \u0111\u1ec3 ch\u1ed1ng l\u1ea1i c\u00e1c m\u1ed1i \u0111e d\u1ecda m\u1edbi. Vi\u1ec7c qu\u1ea3n l\u00fd c\u00e1c quy t\u1eafc n\u00e0y tr\u00ean nhi\u1ec1u t\u01b0\u1eddng l\u1eeda v\u00e0 v\u00f9ng m\u1ea1ng c\u00f3 th\u1ec3 ph\u1ee9c t\u1ea1p. T\u01b0\u1eddng l\u1eeda c\u0169ng c\u1ea7n \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh ch\u00ednh x\u00e1c \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ch\u00fang ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3 m\u00e0 kh\u00f4ng c\u1ea3n tr\u1edf l\u01b0u l\u01b0\u1ee3ng c\u1ea7n thi\u1ebft. Ch\u00fang c\u0169ng c\u1ea7n \u0111\u01b0\u1ee3c theo d\u00f5i li\u00ean t\u1ee5c \u0111\u1ec3 ph\u00e1t hi\u1ec7n v\u00e0 \u1ee9ng ph\u00f3 k\u1ecbp th\u1eddi v\u1edbi c\u00e1c m\u1ed1i \u0111e d\u1ecda.<\/p>\n<h2>T\u01b0\u1eddng l\u1eeda Vs. C\u00e1c bi\u1ec7n ph\u00e1p an ninh m\u1ea1ng t\u01b0\u01a1ng t\u1ef1<\/h2>\n<p>M\u1eb7c d\u00f9 t\u01b0\u1eddng l\u1eeda l\u00e0 m\u1ed9t th\u00e0nh ph\u1ea7n quan tr\u1ecdng c\u1ee7a b\u1ea3o m\u1eadt m\u1ea1ng nh\u01b0ng ch\u00fang th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng c\u00f9ng v\u1edbi c\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt kh\u00e1c \u0111\u1ec3 c\u00f3 kh\u1ea3 n\u0103ng ph\u00f2ng th\u1ee7 m\u1ea1nh m\u1ebd h\u01a1n. \u0110\u00e2y l\u00e0 c\u00e1ch h\u1ecd so s\u00e1nh v\u1edbi c\u00e1c \u0111i\u1ec1u kho\u1ea3n t\u01b0\u01a1ng t\u1ef1:<\/p>\n<table>\n<thead>\n<tr>\n<th>C\u00e1c bi\u1ec7n ph\u00e1p an ninh m\u1ea1ng<\/th>\n<th>S\u1ef1 mi\u00eau t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>H\u1ec7 th\u1ed1ng ng\u0103n ch\u1eb7n x\u00e2m nh\u1eadp (IPS)<\/td>\n<td>Trong khi t\u01b0\u1eddng l\u1eeda ki\u1ec3m so\u00e1t quy\u1ec1n truy c\u1eadp, IPS s\u1ebd gi\u00e1m s\u00e1t ho\u1ea1t \u0111\u1ed9ng m\u1ea1ng \u0111\u1ec3 ph\u00e1t hi\u1ec7n h\u00e0nh vi nguy hi\u1ec3m. T\u01b0\u1eddng l\u1eeda th\u01b0\u1eddng bao g\u1ed3m IPS nh\u01b0 m\u1ed9t t\u00ednh n\u0103ng.<\/td>\n<\/tr>\n<tr>\n<td>Ph\u1ea7n m\u1ec1m di\u1ec7t virus<\/td>\n<td>Ph\u1ea7n m\u1ec1m ch\u1ed1ng vi-r\u00fat b\u1ea3o v\u1ec7 c\u00e1c h\u1ec7 th\u1ed1ng ri\u00eang l\u1ebb kh\u1ecfi ph\u1ea7n m\u1ec1m \u0111\u1ed9c h\u1ea1i, trong khi t\u01b0\u1eddng l\u1eeda b\u1ea3o v\u1ec7 to\u00e0n b\u1ed9 m\u1ea1ng b\u1eb1ng c\u00e1ch ki\u1ec3m so\u00e1t quy\u1ec1n truy c\u1eadp.<\/td>\n<\/tr>\n<tr>\n<td>M\u1ea1ng ri\u00eang \u1ea3o (VPN)<\/td>\n<td>VPN cung c\u1ea5p k\u1ebft n\u1ed1i an to\u00e0n \u0111\u1ec3 truy c\u1eadp t\u1eeb xa, trong khi t\u01b0\u1eddng l\u1eeda ki\u1ec3m so\u00e1t quy\u1ec1n truy c\u1eadp v\u00e0o v\u00e0 t\u1eeb m\u1ea1ng. Nhi\u1ec1u t\u01b0\u1eddng l\u1eeda bao g\u1ed3m h\u1ed7 tr\u1ee3 VPN.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>T\u01b0\u01a1ng lai c\u1ee7a t\u01b0\u1eddng l\u1eeda: Xu h\u01b0\u1edbng v\u00e0 c\u00f4ng ngh\u1ec7 m\u1edbi n\u1ed5i<\/h2>\n<p>Trong t\u01b0\u01a1ng lai, ch\u00fang ta c\u00f3 th\u1ec3 mong \u0111\u1ee3i t\u01b0\u1eddng l\u1eeda s\u1ebd ph\u00e1t tri\u1ec3n v\u1edbi vi\u1ec7c s\u1eed d\u1ee5ng ng\u00e0y c\u00e0ng nhi\u1ec1u tr\u00ed tu\u1ec7 nh\u00e2n t\u1ea1o (AI) v\u00e0 h\u1ecdc m\u00e1y (ML). Nh\u1eefng c\u00f4ng ngh\u1ec7 n\u00e0y c\u00f3 th\u1ec3 gi\u00fap t\u1ef1 \u0111\u1ed9ng ph\u00e1t hi\u1ec7n v\u00e0 \u1ee9ng ph\u00f3 v\u1edbi m\u1ed1i \u0111e d\u1ecda, gi\u1ea3m \u0111\u00e1ng k\u1ec3 th\u1eddi gian ph\u1ea3n \u1ee9ng v\u00e0 c\u1ea3i thi\u1ec7n \u0111\u1ed9 ch\u00ednh x\u00e1c.<\/p>\n<p>T\u01b0\u1eddng l\u1eeda c\u0169ng \u0111ang h\u01b0\u1edbng t\u1edbi ki\u1ebfn tr\u00fac d\u1ef1a tr\u00ean \u0111\u00e1m m\u00e2y, do xu h\u01b0\u1edbng c\u00e1c doanh nghi\u1ec7p chuy\u1ec3n sang \u0111\u00e1m m\u00e2y. Nh\u1eefng ti\u1ebfn b\u1ed9 nh\u01b0 v\u1eady c\u00f3 th\u1ec3 s\u1ebd bao g\u1ed3m t\u01b0\u1eddng l\u1eeda ph\u00e2n t\u00e1n c\u00f3 kh\u1ea3 n\u0103ng b\u1ea3o m\u1eadt c\u00e1c d\u1ecbch v\u1ee5 vi m\u00f4 v\u00e0 v\u00f9ng ch\u1ee9a, \u0111\u1ed3ng th\u1eddi cung c\u1ea5p c\u00e1c bi\u1ec7n ph\u00e1p ki\u1ec3m so\u00e1t chi ti\u1ebft \u1edf c\u1ea5p \u1ee9ng d\u1ee5ng.<\/p>\n<h2>K\u1ebft n\u1ed1i gi\u1eefa m\u00e1y ch\u1ee7 proxy v\u00e0 t\u01b0\u1eddng l\u1eeda<\/h2>\n<p>M\u00e1y ch\u1ee7 proxy v\u00e0 t\u01b0\u1eddng l\u1eeda c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng c\u00f9ng nhau \u0111\u1ec3 cung c\u1ea5p b\u1ea3o m\u1eadt theo l\u1edbp. M\u00e1y ch\u1ee7 proxy ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t trung gian cho c\u00e1c y\u00eau c\u1ea7u, c\u00f3 kh\u1ea3 n\u0103ng cung c\u1ea5p t\u00ednh n\u0103ng \u1ea9n danh v\u00e0 l\u1ecdc n\u1ed9i dung, trong khi t\u01b0\u1eddng l\u1eeda \u0111i\u1ec1u ch\u1ec9nh quy\u1ec1n truy c\u1eadp v\u00e0o m\u1ea1ng d\u1ef1a tr\u00ean c\u00e1c quy t\u1eafc b\u1ea3o m\u1eadt.<\/p>\n<p>S\u1eed d\u1ee5ng m\u00e1y ch\u1ee7 proxy c\u00f3 t\u01b0\u1eddng l\u1eeda c\u00f3 th\u1ec3 mang l\u1ea1i c\u00e1c l\u1ee3i \u00edch b\u1ea3o m\u1eadt b\u1ed5 sung, nh\u01b0 \u1ea9n c\u1ea5u tr\u00fac m\u1ea1ng n\u1ed9i b\u1ed9 c\u1ee7a b\u1ea1n v\u1edbi th\u1ebf gi\u1edbi b\u00ean ngo\u00e0i v\u00e0 l\u1ecdc l\u01b0u l\u01b0\u1ee3ng \u0111i \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt.<\/p>\n<p>V\u00ed d\u1ee5: m\u1ed9t d\u1ecbch v\u1ee5 nh\u01b0 OneProxy c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng song song v\u1edbi t\u01b0\u1eddng l\u1eeda c\u1ee7a b\u1ea1n, b\u1ed5 sung th\u00eam m\u1ed9t l\u1edbp b\u1ea3o v\u1ec7 v\u00e0 ki\u1ec3m so\u00e1t l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp v\u00e0o v\u00e0 r\u1eddi kh\u1ecfi m\u1ea1ng c\u1ee7a b\u1ea1n.<\/p>\n<h2>Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n<p>\u0110\u1ec3 bi\u1ebft th\u00eam th\u00f4ng tin chi ti\u1ebft v\u1ec1 t\u01b0\u1eddng l\u1eeda, b\u1ea1n c\u00f3 th\u1ec3 truy c\u1eadp c\u00e1c t\u00e0i nguy\u00ean sau:<\/p>\n<ol>\n<li><a href=\"https:\/\/www.cisco.com\/c\/en\/us\/products\/security\/firewalls\/what-is-a-firewall.html\" target=\"_new\" rel=\"noopener nofollow\">T\u01b0\u1eddng l\u1eeda l\u00e0 g\u00ec? \u2013 CISCO<\/a><\/li>\n<li><a href=\"https:\/\/en.wikipedia.org\/wiki\/Firewall_(computing)\" target=\"_new\" rel=\"noopener nofollow\">T\u01b0\u1eddng l\u1eeda (m\u00e1y t\u00ednh) - Wikipedia<\/a><\/li>\n<li><a href=\"https:\/\/www.paloaltonetworks.com\/cyberpedia\/what-is-a-firewall\" target=\"_new\" rel=\"noopener nofollow\">T\u01b0\u1eddng l\u1eeda ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o? \u2013 M\u1ea1ng Palo Alto<\/a><\/li>\n<li><a href=\"https:\/\/www.kaspersky.com\/resource-center\/definitions\/what-is-firewall\" target=\"_new\" rel=\"noopener nofollow\">T\u01b0\u1eddng l\u1eeda l\u00e0 g\u00ec v\u00e0 n\u00f3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o? \u2013 Kaspersky<\/a><\/li>\n<li><a href=\"https:\/\/us-cert.cisa.gov\/ncas\/tips\/ST04-004\" target=\"_new\" rel=\"noopener nofollow\">T\u00ecm hi\u1ec3u t\u01b0\u1eddng l\u1eeda \u2013 US-CERT<\/a><\/li>\n<\/ol>","protected":false},"featured_media":468411,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-477247","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Understanding Firewalls: The Core Component of Network Security<\/mark>","faq_items":[{"question":"What is a firewall?","answer":"<p>A firewall is a system that prevents unauthorized access to or from a private network. It acts as a virtual barrier, inspecting all incoming and outgoing traffic and permitting only data that meets predetermined security criteria.<\/p>"},{"question":"When was the concept of firewall first used in cybersecurity?","answer":"<p>The term \"firewall\" was first used in the realm of cybersecurity in the late 1980s to describe a system that prevented unauthorized access to or from a private network.<\/p>"},{"question":"How does a firewall work?","answer":"<p>A firewall operates by using a set of predetermined security rules to decide which data packets can enter or exit the network. When data attempts to enter or leave a network, the firewall checks the packet's information against its tables and rules. If a packet matches an entry in the table, the corresponding action is taken, such as allow or deny.<\/p>"},{"question":"What are some key features of a firewall?","answer":"<p>Key features of a firewall include packet filtering, stateful inspection, proxy service, Network Address Translation (NAT), Virtual Private Network (VPN) support, and Intrusion Prevention Systems (IPS).<\/p>"},{"question":"What are the different types of firewalls?","answer":"<p>Different types of firewalls include packet-filtering firewalls, Stateful Multilayer Inspection (SMLI) Firewalls, Proxy Firewalls, and Next-Generation Firewalls (NGFWs).<\/p>"},{"question":"What are some challenges in deploying and managing firewalls?","answer":"<p>Some challenges in deploying and managing firewalls include keeping firewall rules updated to counter new threats, managing these rules across multiple firewalls and network zones, ensuring firewalls are configured correctly, and continuous monitoring to detect and respond to threats promptly.<\/p>"},{"question":"How do firewalls compare with other network security measures?","answer":"<p>Firewalls control access to and from networks and are often used in conjunction with other security measures like Intrusion Prevention Systems (IPS) that monitor network activity for malicious behavior, Antivirus software that protects individual systems from malicious software, and Virtual Private Networks (VPN) that provide secure connections for remote access.<\/p>"},{"question":"How are firewalls likely to evolve in the future?","answer":"<p>In the future, firewalls are likely to increasingly use artificial intelligence (AI) and machine learning (ML) to automate threat detection and response. Firewalls are also moving towards cloud-native architectures to secure microservices and containers, and provide granular controls at the application level.<\/p>"},{"question":"How do proxy servers work with firewalls?","answer":"<p>Proxy servers and firewalls can work together to provide layered security. A proxy server acts as an intermediary for requests and can provide additional security benefits like hiding your internal network structure from the external world and filtering outgoing traffic for added security.<\/p>"},{"question":"Where can I find more information about firewalls?","answer":"<p>For more detailed information about firewalls, you can visit resources like CISCO, Wikipedia, Palo Alto Networks, Kaspersky, and US-CERT.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/477247","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\/477247\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/468411"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=477247"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}