{"id":15718,"date":"2019-03-26T11:24:26","date_gmt":"2019-03-26T04:24:26","guid":{"rendered":"https:\/\/blog.tinohost.com\/?p=1020"},"modified":"2025-06-25T14:35:10","modified_gmt":"2025-06-25T07:35:10","slug":"firewall-tuong-lua-la-gi","status":"publish","type":"post","link":"https:\/\/tino.vn\/blog\/firewall-tuong-lua-la-gi\/","title":{"rendered":"Firewall (t\u01b0\u1eddng l\u1eeda) l\u00e0 g\u00ec? T\u1ea1i sao t\u01b0\u1eddng l\u1eeda l\u1ea1i quan tr\u1ecdng v\u1edbi m\u00e1y t\u00ednh?"},"content":{"rendered":"\n<p><strong>S\u1ef1 ph\u1ed5 bi\u1ebfn c\u1ee7a <a href=\"https:\/\/tino.vn\/blog\/internet-la-gi\/\" data-type=\"link\" data-id=\"https:\/\/tino.vn\/blog\/internet-la-gi\/\" target=\"_blank\" rel=\"noreferrer noopener\">Internet <\/a>v\u00f4 t\u00ecnh l\u00e0 n\u01a1i ph\u00e1t t\u00e1n nhi\u1ec1u\u00a0virus\u00a0v\u00e0 c\u00e1c <a href=\"https:\/\/tino.vn\/blog\/tan-cong-phat-tan-malware\/\" data-type=\"post\" data-id=\"13699\" target=\"_blank\" rel=\"noreferrer noopener\">ch\u01b0\u01a1ng tr\u00ecnh ph\u1ea7n m\u1ec1m \u0111\u1ed9c h\u1ea1i<\/a>. \u0110\u1ec3 ng\u0103n truy c\u1eadp tr\u00e1i ph\u00e9p c\u0169ng nh\u01b0 c\u00e1c ch\u01b0\u01a1ng tr\u00ecnh \u0111\u1ed9c h\u1ea1i th\u00e2m nh\u1eadp, ngo\u00e0i vi\u1ec7c c\u00e0i \u0111\u1eb7t m\u1ed9t ch\u01b0\u01a1ng tr\u00ecnh AntiVirus \u0111\u1ee7 m\u1ea1nh, m\u00e1y t\u00ednh c\u1ee7a b\u1ea1n c\u00f2n c\u1ea7n m\u1ed9t h\u1ec7 th\u1ed1ng c\u00f3 kh\u1ea3 n\u0103ng qu\u1ea3n l\u00fd t\u1ea5t c\u1ea3 c\u00e1c truy c\u1eadp t\u1eeb b\u00ean trong m\u00e1y t\u00ednh ra Internet v\u00e0 t\u1eeb Internet v\u00e0o m\u00e1y t\u00ednh. H\u1ec7 th\u1ed1ng \u0111\u00f3 g\u1ecdi l\u00e0 Firewall (t\u01b0\u1eddng l\u1eeda).<\/strong> <strong>V\u1eady c\u1ee5 th\u1ec3 Firewall l\u00e0 g\u00ec?<\/strong><\/p>\n\n\n\n<h2 id=\"Firewall_(t\u01b0\u1eddng_l\u1eeda)_l\u00e0_g\u00ec?\">Firewall (t\u01b0\u1eddng l\u1eeda) l\u00e0 g\u00ec?<\/h2>\n\n\n\n<h3 id=\"Kh\u00e1i_ni\u1ec7m_Firewall\"><strong>Kh\u00e1i ni\u1ec7m Firewall<\/strong><\/h3>\n\n\n\n<p>Firewall, t\u1ea1m d\u1ecbch: <em>T\u01b0\u1eddng l\u1eeda<\/em>,\u00a0l\u00e0 thu\u1eadt ng\u1eef chuy\u00ean ng\u00e0nh m\u1ea1ng m\u00e1y t\u00ednh, di\u1ec5n t\u1ea3 m\u1ed9t h\u1ec7 th\u1ed1ng an ninh m\u1ea1ng. \u0110\u00e2y l\u00e0 b\u1ee9c r\u00e0o ch\u1eafn gi\u1eefa m\u1ea1ng n\u1ed9i b\u1ed9 (local network) v\u1edbi m\u1ed9t m\u1ea1ng kh\u00e1c (ch\u1eb3ng h\u1ea1n nh\u01b0 Internet), \u0111i\u1ec1u khi\u1ec3n l\u01b0u l\u01b0\u1ee3ng ra v\u00e0o gi\u1eefa hai m\u1ea1ng n\u00e0y.\u00a0<\/p>\n\n\n\n<p>Hi\u1ec3u \u0111\u01a1n gi\u1ea3n, Firewall l\u00e0 ranh gi\u1edbi b\u1ea3o m\u1eadt gi\u1eefa b\u00ean trong v\u00e0 b\u00ean ngo\u00e0i h\u1ec7 th\u1ed1ng m\u1ea1ng m\u00e1y t\u00ednh.&nbsp;<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"700\" height=\"375\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2019\/03\/firewall-la-gi-1-1.png\" alt=\"Firewall l\u00e0 g\u00ec?\" class=\"wp-image-116081\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2019\/03\/firewall-la-gi-1-1.png 700w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2019\/03\/firewall-la-gi-1-1-300x161.png 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><figcaption class=\"wp-element-caption\"><strong>Firewall l\u00e0 g\u00ec?<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<h3 id=\"Firewall_c\u00f3_c\u1ea5u_t\u1ea1o_nh\u01b0_th\u1ebf_n\u00e0o?\"><strong>Firewall c\u00f3 c\u1ea5u t\u1ea1o nh\u01b0 th\u1ebf n\u00e0o?<\/strong><\/h3>\n\n\n\n<p>Firewall l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng m\u1ea1ng c\u00f3 t\u00edch h\u1ee3p k\u1ef9 thu\u1eadt. \u0110\u00f3 c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee9ng ho\u1eb7c ph\u1ea7n m\u1ec1m hay th\u1eadm ch\u00ed l\u00e0 t\u00edch h\u1ee3p c\u1ea3 hai, s\u1eed d\u1ee5ng c\u00e1c quy t\u1eafc \u0111\u1ec3 ki\u1ec3m so\u00e1t traffic v\u00e0o, ra kh\u1ecfi h\u1ec7 th\u1ed1ng. <\/p>\n\n\n\n<p>Firewall ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t r\u00e0o ch\u1eafn gi\u1eefa m\u1ea1ng an to\u00e0n v\u00e0 m\u1ea1ng kh\u00f4ng an to\u00e0n. N\u00f3 ki\u1ec3m so\u00e1t c\u00e1c truy c\u1eadp \u0111\u1ebfn ngu\u1ed3n l\u1ef1c c\u1ee7a m\u1ea1ng th\u00f4ng qua m\u1ed9t m\u00f4 h\u00ecnh ki\u1ec3m so\u00e1t ch\u1ee7 \u0111\u1ed9ng. Ngh\u0129a l\u00e0, ch\u1ec9 nh\u1eefng traffic ph\u00f9 h\u1ee3p v\u1edbi ch\u00ednh s\u00e1ch \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a trong t\u01b0\u1eddng l\u1eeda m\u1edbi \u0111\u01b0\u1ee3c truy c\u1eadp v\u00e0o m\u1ea1ng, m\u1ecdi traffic kh\u00e1c \u0111\u1ec1u b\u1ecb t\u1eeb ch\u1ed1i.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"700\" height=\"375\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2019\/03\/firewall-la-gi-2.png\" alt=\"C\u1ea5u t\u1ea1o c\u1ee7a Firewall\" class=\"wp-image-116082\" title=\"Firewall l\u00e0 g\u00ec? Hosting c\u00f3 Firewall kh\u00f4ng? 42\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2019\/03\/firewall-la-gi-2.png 700w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2019\/03\/firewall-la-gi-2-300x161.png 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><figcaption class=\"wp-element-caption\"><strong>C\u1ea5u t\u1ea1o c\u1ee7a Firewall<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<h3 id=\"Ch\u1ee9c_n\u0103ng_c\u1ee7a_Firewall\"><strong>Ch\u1ee9c n\u0103ng c\u1ee7a Firewall<\/strong><\/h3>\n\n\n\n<h4 id=\"Ki\u1ec3m_so\u00e1t_th\u00f4ng_tin\">Ki\u1ec3m so\u00e1t th\u00f4ng tin<\/h4>\n\n\n\n<p><strong>Ki\u1ec3m so\u00e1t lu\u1ed3ng th\u00f4ng tin gi\u1eefa m\u00f4i tr\u01b0\u1eddng b\u00ean trong (intranet) v\u00e0 b\u00ean ngo\u00e0i (internet), thi\u1ebft l\u1eadp c\u01a1 ch\u1ebf \u0111i\u1ec1u khi\u1ec3n d\u00f2ng th\u00f4ng tin gi\u1eefa m\u1ea1ng b\u00ean trong v\u00e0 m\u1ea1ng internet<\/strong>&nbsp;l\u00e0 ch\u1ee9c n\u0103ng ch\u00ednh c\u1ee7a Firewall.&nbsp;<\/p>\n\n\n\n<p>\u0110\u01b0\u1ee3c xem l\u00e0 h\u00e0ng ph\u00f2ng v\u1ec7 \u0111\u1ea7u ti\u00ean ch\u1ed1ng l\u1ea1i nh\u1eefng k\u1ebb hay \u0111i x\u00e2m nh\u1eadp tr\u1ed9m, Firewall<strong>&nbsp;theo d\u00f5i lu\u1ed3ng d\u1eef li\u1ec7u<\/strong>&nbsp;gi\u1eefa hai m\u00f4i tr\u01b0\u1eddng intranet v\u00e0 internet \u0111\u1ec3 k\u1ecbp th\u1eddi ph\u00e1t hi\u1ec7n, ng\u0103n ch\u1eb7n c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng t\u1eeb b\u00ean ngo\u00e0i.<\/p>\n\n\n\n<h4 id=\"\u0110i\u1ec1u_ti\u1ebft_l\u01b0u_l\u01b0\u1ee3ng_m\u1ea1ng_gi\u1eefa_c\u00e1c_ph\u00e2n_\u0111o\u1ea1n_m\u1ea1ng_(b\u00ean_trong_l\u1eabn_b\u00ean_ngo\u00e0i)\"><strong>\u0110i\u1ec1u ti\u1ebft l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng gi\u1eefa c\u00e1c ph\u00e2n \u0111o\u1ea1n m\u1ea1ng (b\u00ean trong l\u1eabn b\u00ean ngo\u00e0i)<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>L\u1ecdc c\u00e1c g\u00f3i tin<\/strong>&nbsp;d\u1ef1a v\u00e0o \u0111\u1ecba ch\u1ec9 ngu\u1ed3n, \u0111\u1ecba ch\u1ec9 \u0111\u00edch v\u00e0 s\u1ed1 c\u1ed5ng (port), giao th\u1ee9c m\u1ea1ng.<br>C\u00f3 th\u1ec3 s\u1eed d\u1ee5ng \u0111\u1ec3 ghi l\u1ea1i t\u1ea5t c\u1ea3 c\u00e1c s\u1ef1 c\u1ed1 g\u1eafng truy nh\u1eadp v\u00e0o m\u1ea1ng v\u00e0 b\u00e1o c\u00e1o cho ng\u01b0\u1eddi qu\u1ea3n tr\u1ecb.<\/li>\n\n\n\n<li><strong>C\u00e2n b\u1eb1ng t\u1ea3i:<\/strong>&nbsp;B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng nhi\u1ec1u \u0111\u01b0\u1eddng truy\u1ec1n internet c\u00f9ng m\u1ed9t l\u00fac, vi\u1ec7c chia t\u1ea3i s\u1ebd gi\u00fap \u0111\u01b0\u1eddng truy\u1ec1n internet \u1ed5n \u0111\u1ecbnh h\u01a1n r\u1ea5t nhi\u1ec1u.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"700\" height=\"375\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2019\/03\/firewall-la-gi-3.png\" alt=\"Ch\u1ee9c n\u0103ng c\u1ee7a Firewall\" class=\"wp-image-116083\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2019\/03\/firewall-la-gi-3.png 700w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2019\/03\/firewall-la-gi-3-300x161.png 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><figcaption class=\"wp-element-caption\"><strong>Ch\u1ee9c n\u0103ng c\u1ee7a Firewall<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<h4 id=\"L\u00e0_n\u01a1i_\u00e1p_\u0111\u1eb7t_c\u00e1c_ch\u00ednh_s\u00e1ch_\u0111i\u1ec1u_khi\u1ec3n_truy_c\u1eadp\">L\u00e0 n\u01a1i \u00e1p \u0111\u1eb7t c\u00e1c ch\u00ednh s\u00e1ch \u0111i\u1ec1u khi\u1ec3n truy c\u1eadp<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Cho ph\u00e9p ho\u1eb7c c\u1ea5m<\/strong>&nbsp;c\u00e1c d\u1ecbch v\u1ee5 truy c\u1eadp ra ngo\u00e0i c\u0169ng nh\u01b0 c\u00e1c d\u1ecbch v\u1ee5 t\u1eeb ngo\u00e0i truy c\u1eadp v\u00e0o trong.&nbsp;<\/li>\n\n\n\n<li>Ki\u1ec3m so\u00e1t \u0111\u1ecba ch\u1ec9 truy c\u1eadp, c\u1ea5m ho\u1eb7c cho ph\u00e9p \u0111\u1ecba ch\u1ec9 \u0111\u01b0\u1ee3c truy nh\u1eadp.<\/li>\n\n\n\n<li>Ki\u1ec3m so\u00e1t&nbsp;<strong>ng\u01b0\u1eddi d\u00f9ng v\u00e0 vi\u1ec7c truy c\u1eadp<\/strong>&nbsp;c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/li>\n\n\n\n<li>Ki\u1ec1m so\u00e1t&nbsp;<strong>n\u1ed9i dung th\u00f4ng tin, g\u00f3i tin l\u01b0u chuy\u1ec3n<\/strong>&nbsp;tr\u00ean h\u1ec7 th\u1ed1ng m\u1ea1ng.<\/li>\n<\/ul>\n\n\n\n<p>M\u1ed9t s\u1ed1 Firewall c\u00f3 ch\u1ee9c n\u0103ng cao c\u1ea5p nh\u01b0:&nbsp;<strong>\u0111\u00e1nh l\u1eeba<\/strong>&nbsp;khi\u1ebfn hacker \u0111\u00e3 nh\u1ea7m t\u01b0\u1edfng m\u00ecnh \u0111\u00e3 hack th\u00e0nh c\u00f4ng v\u00e0o h\u1ec7 th\u1ed1ng, nh\u01b0ng th\u1eadt ch\u1ea5t l\u00e0 ng\u1ea7m&nbsp;<strong>theo d\u00f5i v\u00e0 ghi l\u1ea1i<\/strong>&nbsp;s\u1ef1 ho\u1ea1t \u0111\u1ed9ng \u0111\u00f3.<\/p>\n\n\n\n<h2 id=\"Ph\u00e2n_lo\u1ea1i_Firewall_theo_xu_h\u01b0\u1edbng_s\u1eed_d\u1ee5ng\">Ph\u00e2n lo\u1ea1i Firewall theo xu h\u01b0\u1edbng s\u1eed d\u1ee5ng<\/h2>\n\n\n\n<h3 id=\"Personal_Firewall\"><strong>Personal Firewall<\/strong><\/h3>\n\n\n\n<p>\u0110\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3\u00a0<strong>b\u1ea3o v\u1ec7 duy nh\u1ea5t m\u1ed9t m\u00e1y t\u00ednh<\/strong>\u00a0tr\u01b0\u1edbc s\u1ef1 truy c\u1eadp tr\u00e1i ph\u00e9p t\u1eeb b\u00ean ngo\u00e0i, Personal Firewall t\u00edch h\u1ee3p c\u00e1c t\u00ednh n\u0103ng nh\u01b0 theo d\u00f5i c\u00e1c ph\u1ea7n m\u1ec1m ch\u1ed1ng virus, ph\u1ea7n m\u1ec1m ch\u1ed1ng x\u00e2m nh\u1eadp \u0111\u1ec3 b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u.<\/p>\n\n\n\n<p>\u0110\u1ed1i t\u01b0\u1ee3ng s\u1eed d\u1ee5ng: ng\u01b0\u1eddi d\u00f9ng ph\u1ed5 th\u00f4ng, m\u00e1y t\u00ednh c\u00e1 nh\u00e2n.&nbsp;<\/p>\n\n\n\n<p>M\u1ed9t s\u1ed1 Personal Firewall \u0111i\u1ec3n h\u00ecnh nh\u01b0: Microsoft Internet Connection Firewall, Symantec Personal Firewall, Cisco Security Agent\u2026.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"700\" height=\"375\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2019\/03\/firewall-la-gi-4.png\" alt=\"Ph\u00e2n lo\u1ea1i Firewall theo xu h\u01b0\u1edbng s\u1eed d\u1ee5ng\" class=\"wp-image-116084\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2019\/03\/firewall-la-gi-4.png 700w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2019\/03\/firewall-la-gi-4-300x161.png 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><figcaption class=\"wp-element-caption\"><strong>Ph\u00e2n lo\u1ea1i Firewall theo xu h\u01b0\u1edbng s\u1eed d\u1ee5ng<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<h3 id=\"Network_Firewall\"><strong>Network Firewall<\/strong><\/h3>\n\n\n\n<p>\u0110\u01b0\u1ee3c thi\u1ebft k\u1ebf ra \u0111\u1ec3 b\u1ea3o v\u1ec7 c\u00e1c host trong m\u1ea1ng tr\u01b0\u1edbc s\u1ef1 t\u1ea5n c\u00f4ng t\u1eeb b\u00ean ngo\u00e0i, Network firewall b\u1ea3o v\u1ec7 cho c\u1ea3 m\u1ed9t h\u1ec7 th\u1ed1ng m\u1ea1ng m\u00e1y t\u00ednh v\u1edbi c\u00e1c th\u00e0nh ph\u1ea7n c\u1ea5u t\u1ea1o ch\u00ednh:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>B\u1ed9 l\u1ecdc Packet (Packet- Filtering Router)<\/li>\n\n\n\n<li>C\u1ed5ng \u1ee9ng d\u1ee5ng ( \u0111\u00f3 l\u00e0 Application-Level Gateway hay Proxy Server).<\/li>\n\n\n\n<li>C\u1ed5ng m\u1ea1ch (Circuite Level Gateway).<\/li>\n<\/ul>\n\n\n\n<p>M\u1ed9t s\u1ed1 Network Firewall \u0111i\u1ec3n h\u00ecnh nh\u01b0: <a href=\"https:\/\/www.cisco.com\/en\/US\/docs\/security\/pix\/pix50\/configuration\/guide\/intro.html#wp4322\" target=\"_blank\" data-type=\"link\" data-id=\"https:\/\/www.cisco.com\/en\/US\/docs\/security\/pix\/pix50\/configuration\/guide\/intro.html#wp4322\" rel=\"noreferrer noopener nofollow\">Cisco PIX<\/a>, <a href=\"https:\/\/www.cisco.com\/c\/en\/us\/products\/security\/adaptive-security-appliance-asa-software\/index.html\" target=\"_blank\" data-type=\"link\" data-id=\"https:\/\/www.cisco.com\/c\/en\/us\/products\/security\/adaptive-security-appliance-asa-software\/index.html\" rel=\"noreferrer noopener nofollow\">Cisco ASA <\/a>(Appliance-Based network Firewalls), Nokia Firewalls, Check Point\u2019s Firewall, Microsoft ISA Server, Linux-based IPTables (Software-Base firewalls).<\/p>\n\n\n\n<h2 id=\"S\u1ea3n_ph\u1ea9m_\u1ee9ng_d\u1ee5ng_Firewall_trong_th\u1ef1c_t\u1ebf\">S\u1ea3n ph\u1ea9m \u1ee9ng d\u1ee5ng Firewall trong th\u1ef1c t\u1ebf<\/h2>\n\n\n\n<h3 id=\"Software_Firewalls_(Firewall_m\u1ec1m)&nbsp;\"><strong>Software Firewalls (Firewall m\u1ec1m)&nbsp;<\/strong><\/h3>\n\n\n\n<p>\u0110\u00e2y l\u00e0 lo\u1ea1i Firewall \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p tr\u00ean h\u1ec7 \u0111i\u1ec1u h\u00e0nh, bao g\u1ed3m c\u00e1c s\u1ea3n ph\u1ea9m nh\u01b0: SunScreen Firewall, Check Point NG, IPF, Linux\u2019s IPTables, Microsoft ISA server,&nbsp; \u2026<\/p>\n\n\n\n<p>Firewall m\u1ec1m \u0111\u01b0\u1ee3c c\u00e0i \u0111\u1eb7t tr\u00ean Server.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"700\" height=\"375\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2019\/03\/firewall-la-gi-5-1.png\" alt=\"S\u1ea3n ph\u1ea9m \u1ee9ng d\u1ee5ng Firewall trong th\u1ef1c t\u1ebf\" class=\"wp-image-116086\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2019\/03\/firewall-la-gi-5-1.png 700w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2019\/03\/firewall-la-gi-5-1-300x161.png 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><figcaption class=\"wp-element-caption\"><strong>S\u1ea3n ph\u1ea9m \u1ee9ng d\u1ee5ng Firewall trong th\u1ef1c t\u1ebf<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<h3 id=\"Appliance_Firewalls_(Firewall_c\u1ee9ng)\"><strong>Appliance Firewalls (Firewall c\u1ee9ng)<\/strong><\/h3>\n\n\n\n<p>\u0110\u00e2y l\u00e0 lo\u1ea1i Firewall \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p s\u1eb5n tr\u00ean c\u00e1c thi\u1ebft k\u1ebf\/ph\u1ea7n c\u1ee9ng chuy\u00ean d\u1ee5ng d\u00e0nh ri\u00eang cho Firewall. Cisco PIX, WatchGuard Fireboxes, NetScreen firewall, SonicWall Appliaces, Nokia Firewall, \u2026 l\u00e0 nh\u1eefng v\u00ed d\u1ee5 Firewall c\u1ee9ng \u0111i\u1ec3n h\u00ecnh.&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u01afu \u0111i\u1ec3m:<\/strong>&nbsp;T\u00ednh b\u1ea3o m\u1eadt cao h\u01a1n, t\u1ed5ng chi ph\u00ed th\u1ea5p h\u01a1n v\u00e0 hi\u1ec7u su\u1ea5t t\u1ed5ng th\u1ec3 t\u1ed1t h\u01a1n so v\u1edbi Firewall m\u1ec1m.<\/li>\n\n\n\n<li><strong>H\u1ea1n ch\u1ebf:<\/strong>&nbsp;kh\u00f4ng &nbsp;linh ho\u1ea1t nh\u01b0 Firewall m\u1ec1m.<\/li>\n<\/ul>\n\n\n\n<h3 id=\"Integrated_Firewalls_(Firewall_t\u00edch_h\u1ee3p)\"><strong>Integrated Firewalls (Firewall t\u00edch h\u1ee3p)<\/strong><\/h3>\n\n\n\n<p>\u0110\u00e2y l\u00e0 Firewall \u201cn\u00e2ng cao\u201d. Ngo\u00e0i ch\u1ee9c n\u0103ng c\u01a1 b\u1ea3n, Integrated firewalls c\u00f2n \u0111\u1ea3m nh\u1eadn c\u00e1c ch\u1ee9c n\u0103ng kh\u00e1c nh\u01b0 <a href=\"https:\/\/tino.vn\/blog\/vpn-la-gi\/\" target=\"_blank\" data-type=\"post\" data-id=\"15587\" rel=\"noreferrer noopener\">VPN<\/a>, ph\u00e1t hi\u1ec7n v\u00e0 ch\u1ed1ng x\u00e2m nh\u1eadp t\u1eeb b\u00ean ngo\u00e0i, l\u1ecdc th\u01b0 r\u00e1c, ch\u1ed1ng l\u1ea1i virus\u2026<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u01afu \u0111i\u1ec3m:<\/strong>&nbsp;\u0111\u01a1n gi\u1ea3n h\u00f3a thi\u1ebft k\u1ebf m\u1ea1ng, gi\u1ea3m chi ph\u00ed qu\u1ea3n l\u00fd, gi\u1ea3m g\u00e1nh n\u1eb7ng cho c\u00e1c chuy\u00ean vi\u00ean qu\u1ea3n tr\u1ecb, \u2026<\/li>\n\n\n\n<li><strong>Nh\u01b0\u1ee3c \u0111i\u1ec3m:<\/strong>&nbsp;n\u1ebfu x\u1ea3y ra s\u1ef1 c\u1ed1, vi\u1ec7c kh\u1eafc ph\u1ee5c s\u1ebd r\u1ea5t kh\u00f3 kh\u0103n.<\/li>\n<\/ul>\n\n\n\n<p>Firewall kh\u00f4ng ph\u1ea3i l\u00e0&nbsp;<strong>\u201ct\u01b0\u1eddng l\u1eeda v\u1ea1n n\u0103ng\u201d<\/strong>&nbsp;n\u00ean kh\u00f4ng th\u1ec3 b\u1ea3o v\u1ec7 m\u00e1y t\u00ednh\/h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n tr\u00e1nh \u0111\u01b0\u1ee3c t\u1ea5t c\u1ea3 c\u00e1c m\u1ed1i nguy hi\u1ec3m. Do \u0111\u00f3, b\u1ea1n c\u1ea7n \u201ctrang b\u1ecb\u201d th\u00eam v\u00e0i \u201cl\u00e1 ch\u1eafn\u201d \u0111\u1ec3 b\u1ea3o v\u1ec7 th\u00f4ng tin c\u1ee7a m\u00ecnh.&nbsp;<\/p>\n\n\n\n<h3 id=\"Hosting_c\u00f3_Firewall_kh\u00f4ng?\"><strong>Hosting c\u00f3 Firewall kh\u00f4ng?<\/strong><\/h3>\n\n\n\n<p>C\u00f3. H\u1ea7u h\u1ebft c\u00e1c d\u1ecbch v\u1ee5 l\u01b0u tr\u1eef (<a href=\"https:\/\/tino.vn\/blog\/hosting-la-gi\" target=\"_blank\" data-type=\"post\" data-id=\"15577\" rel=\"noreferrer noopener\">hosting<\/a>) \u0111\u1ec1u cung c\u1ea5p Firewall \u0111\u1ec3 b\u1ea3o v\u1ec7 trang web v\u00e0 d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n. \u0110\u00e2y l\u00e0 m\u1ed9t th\u00e0nh ph\u1ea7n quan tr\u1ecdng c\u1ee7a h\u1ec7 th\u1ed1ng b\u1ea3o m\u1eadt, gi\u00fap ng\u0103n ch\u1eb7n truy c\u1eadp tr\u00e1i ph\u00e9p v\u00e0 t\u1ea5n c\u00f4ng t\u1eeb c\u00e1c ngu\u1ed3n kh\u00f4ng mong mu\u1ed1n. V\u00ec v\u1eady, khi l\u1ef1a ch\u1ecdn nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 l\u01b0u tr\u1eef web, b\u1ea1n n\u00ean ki\u1ec3m tra xem h\u1ecd c\u00f3 h\u1ed7 tr\u1ee3 Firewall v\u00e0 c\u00e1c t\u00ednh n\u0103ng b\u1ea3o m\u1eadt kh\u00e1c \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng trang web c\u1ee7a b\u1ea1n \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 m\u1ed9t c\u00e1ch t\u1ed1t nh\u1ea5t.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"700\" height=\"375\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2019\/03\/6.png\" alt=\"Hosting c\u00f3 Firewall kh\u00f4ng?\" class=\"wp-image-116087\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2019\/03\/6.png 700w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2019\/03\/6-300x161.png 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><figcaption class=\"wp-element-caption\"><strong>Hosting c\u00f3 Firewall kh\u00f4ng?<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<p><a href=\"http:\/\/Tino.vn\" target=\"_blank\" data-type=\"link\" data-id=\"https:\/\/tinohost.com\/\" rel=\"noreferrer noopener nofollow\">Tino <\/a>l\u00e0 m\u1ed9t nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 l\u01b0u tr\u1eef web h\u00e0ng \u0111\u1ea7u t\u1ea1i Vi\u1ec7t Nam. Ch\u00fang t\u00f4i t\u1ef1 h\u00e0o cung c\u1ea5p c\u00e1c gi\u1ea3i ph\u00e1p hosting m\u1ea1nh m\u1ebd v\u00e0 an to\u00e0n cho c\u00e1c trang web c\u00e1 nh\u00e2n v\u00e0 doanh nghi\u1ec7p. V\u1edbi t\u00ednh n\u0103ng Firewall \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p trong c\u00e1c d\u00f2ng hosting, trang web c\u1ee7a b\u1ea1n s\u1ebd \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 ch\u1eb7t ch\u1ebd, ng\u0103n ch\u1eb7n vi\u1ec7c x\u00e2m nh\u1eadp t\u1eeb c\u00e1c ngu\u1ed3n \u0111\u00e1ng ng\u1edd v\u00e0 t\u0103ng c\u01b0\u1eddng an ninh cho d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n. Ch\u00fang t\u00f4i cam k\u1ebft cung c\u1ea5p m\u1ed9t m\u00f4i tr\u01b0\u1eddng l\u01b0u tr\u1eef an to\u00e0n v\u00e0 \u0111\u00e1ng tin c\u1eady \u0111\u1ec3 b\u1ea1n t\u1eadp trung v\u00e0o vi\u1ec7c ph\u00e1t tri\u1ec3n trang web c\u1ee7a m\u00ecnh m\u00e0 kh\u00f4ng lo l\u1eafng v\u1ec1 c\u00e1c v\u1ea5n \u0111\u1ec1 b\u1ea3o m\u1eadt.<\/p>\n\n\n\n<h3 id=\"K\u1ebft_lu\u1eadn\"><strong>K\u1ebft lu\u1eadn<\/strong><\/h3>\n\n\n\n<p>Trong th\u1eddi \u0111\u1ea1i k\u1ef9 thu\u1eadt s\u1ed1 ng\u00e0y nay, Firewall tr\u1edf th\u00e0nh m\u1ed9t y\u1ebfu t\u1ed1 kh\u00f4ng th\u1ec3 thi\u1ebfu \u0111\u1ed1i v\u1edbi m\u1ecdi t\u1ed5 ch\u1ee9c v\u00e0 ng\u01b0\u1eddi d\u00f9ng c\u00e1 nh\u00e2n \u0111\u1ec3 b\u1ea3o v\u1ec7 m\u1ea1ng v\u00e0 d\u1eef li\u1ec7u c\u1ee7a h\u1ecd tr\u01b0\u1edbc nh\u1eefng m\u1ed1i \u0111e d\u1ecda tr\u1ef1c tuy\u1ebfn kh\u00f4ng ng\u1eebng gia t\u0103ng. Hy v\u1ecdng b\u00e0i vi\u1ebft tr\u00ean \u0111\u00e3 gi\u00fap b\u1ea1n c\u00f3 c\u00e1i nh\u00ecn t\u1ed5ng quan v\u1ec1 Firewall v\u00e0 d\u00e0nh s\u1ef1 quan t\u00e2m v\u1ec1 t\u00ednh n\u0103ng n\u00e0y nhi\u1ec1u h\u01a1n \u0111\u1ec3 thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n lu\u00f4n \u0111\u01b0\u1ee3c an to\u00e0n.<\/p>\n\n\n\n<h2 id=\"Nh\u1eefng_c\u00e2u_h\u1ecfi_th\u01b0\u1eddng_g\u1eb7p\">Nh\u1eefng c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n\n\n\t\t<section\t\thelp class=\"sc_fs_faq sc_card    \"\n\t\t\t\t>\n\t\t\t\t<h2 id=\"\u0110i\u1ec3m_kh\u00e1c_bi\u1ec7t_gi\u1eefa_Personal_Firewall_v\u00e0_Network_Firewall_l\u00e0_g\u00ec?\">\u0110i\u1ec3m kh\u00e1c bi\u1ec7t gi\u1eefa Personal Firewall v\u00e0 Network Firewall l\u00e0 g\u00ec?<\/h2>\t\t\t\t<div>\n\t\t\t\t\t\t<div class=\"sc_fs_faq__content\">\n\t\t\t\t\n\n<p>S\u1ed1 l\u01b0\u1ee3ng host \u0111\u01b0\u1ee3c Firewall b\u1ea3o v\u1ec7 ch\u00ednh l\u00e0 \u0111i\u1ec3m kh\u00e1c bi\u1ec7t gi\u1eefa Personal Firewall v\u00e0 Network Firewall:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Personal firewall ch\u1ec9 b\u1ea3o v\u1ec7 cho m\u1ed9t m\u00e1y duy nh\u1ea5t<\/li>\n\n\n\n<li>Network firewall s\u1ebd b\u1ea3o v\u1ec7 cho c\u1ea3 m\u1ed9t h\u1ec7 th\u1ed1ng m\u1ea1ng m\u00e1y t\u00ednh.<\/li>\n<\/ul>\n\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section\t\thelp class=\"sc_fs_faq sc_card    \"\n\t\t\t\t>\n\t\t\t\t<h2 id=\"Firewall_c\u00f3_th\u1ec3_\u201cantivirus\u201d_100%?\">Firewall c\u00f3 th\u1ec3 \u201cantivirus\u201d 100%?<\/h2>\t\t\t\t<div>\n\t\t\t\t\t\t<div class=\"sc_fs_faq__content\">\n\t\t\t\t\n\n<p>Kh\u00f4ng. Firewall kh\u00f4ng th\u1ec3 r\u00e0 qu\u00e9t virus tr\u00ean c\u00e1c d\u1eef li\u1ec7u \u0111\u00ad\u01b0\u1ee3c chuy\u1ec3n qua. T\u1ed1c \u0111\u1ed9 l\u00e0m vi\u1ec7c, s\u1ef1 xu\u1ea5t hi\u1ec7n li\u00ean t\u1ee5c c\u1ee7a c\u00e1c virus m\u1edbi v\u00e0 \u0111a d\u1ea1ng c\u00e1ch \u0111\u1ec3 m\u00e3 h\u00f3a d\u1eef li\u1ec7u c\u00f3 th\u1ec3 tho\u00e1t kh\u1ecfi kh\u1ea3 n\u0103ng ki\u1ec3m so\u00e1t c\u1ee7a Firewall. Tuy nhi\u00ean, ch\u00fang ta kh\u00f4ng th\u1ec3 ph\u1ee7 nh\u1eadn r\u1eb1ng Firewall v\u1eabn l\u00e0 gi\u1ea3i ph\u00e1p h\u1eefu hi\u1ec7u \u0111\u01b0\u00ad\u1ee3c \u00e1p d\u1ee5ng kh\u00e1 r\u1ed9ng r\u00e3i hi\u1ec7n nay.<\/p>\n\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section\t\thelp class=\"sc_fs_faq sc_card    \"\n\t\t\t\t>\n\t\t\t\t<h2 id=\"Firewall_c\u00f3_th\u1ec3_\u201cph\u00e2n_lo\u1ea1i\u201d_th\u00f4ng_tin?\">Firewall c\u00f3 th\u1ec3 \u201cph\u00e2n lo\u1ea1i\u201d th\u00f4ng tin?<\/h2>\t\t\t\t<div>\n\t\t\t\t\t\t<div class=\"sc_fs_faq__content\">\n\t\t\t\t\n\n<p>T\u01b0\u01a1ng t\u1ef1 nh\u01b0 kh\u1ea3 n\u0103ng \u201cantivirus\u201d,&nbsp;Firewall kh\u00f4ng c\u00f3 \u0111\u1ee7 \u201cth\u00f4ng minh\u201d \u0111\u1ec3 c\u00f3 th\u1ec3 \u0111\u1ecdc hi\u1ec3u v\u00e0 ph\u00e2n lo\u1ea1i t\u1eebng lo\u1ea1i th\u00f4ng tin t\u1ed1t hay x\u1ea5u. Firewall ch\u1ec9 \u0111\u01a1n thu\u1ea7n h\u1ed7 tr\u1ee3 ch\u00fang ta ng\u0103n ch\u1eb7n s\u1ef1 x\u00e2m nh\u1eadp c\u1ee7a nh\u1eefng ngu\u1ed3n th\u00f4ng tin kh\u00f4ng mong mu\u1ed1n nh\u01b0\u00adng ph\u1ea3i x\u00e1c \u0111\u1ecbnh r\u00f5 c\u00e1c th\u00f4ng s\u1ed1 \u0111\u1ecba ch\u1ec9.<\/p>\n\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section\t\thelp class=\"sc_fs_faq sc_card    \"\n\t\t\t\t>\n\t\t\t\t<h2 id=\"Firewall_\u1ea3nh_h\u01b0\u1edfng_\u0111\u1ebfn_t\u1ed1c_\u0111\u1ed9_internet_kh\u00f4ng?_\">Firewall \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 internet kh\u00f4ng? <\/h2>\t\t\t\t<div>\n\t\t\t\t\t\t<div class=\"sc_fs_faq__content\">\n\t\t\t\t\n\n<p>C\u00f3 th\u1ec3, Firewall c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 internet t\u00f9y thu\u1ed9c v\u00e0o vi\u1ec7c c\u1ea5u h\u00ecnh v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a Firewall \u0111\u00f3. M\u1ed9t c\u1ea5u h\u00ecnh kh\u00f4ng ch\u00ednh x\u00e1c c\u00f3 th\u1ec3 g\u00e2y ra s\u1ef1 ch\u1eadm tr\u1ec5 trong vi\u1ec7c truy c\u1eadp internet.<\/p>\n\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/section>\n\t\t\n<script type=\"application\/ld+json\">\n\t{\n\t\t\"@context\": \"https:\/\/schema.org\",\n\t\t\"@type\": \"FAQPage\",\n\t\t\"mainEntity\": [\n\t\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"\u0110i\u1ec3m kh\u00e1c bi\u1ec7t gi\u1eefa Personal Firewall v\u00e0 Network Firewall l\u00e0 g\u00ec?\",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"<p>S\u1ed1 l\u01b0\u1ee3ng host \u0111\u01b0\u1ee3c Firewall b\u1ea3o v\u1ec7 ch\u00ednh l\u00e0 \u0111i\u1ec3m kh\u00e1c bi\u1ec7t gi\u1eefa Personal Firewall v\u00e0 Network Firewall:<\/p><ul><li>Personal firewall ch\u1ec9 b\u1ea3o v\u1ec7 cho m\u1ed9t m\u00e1y duy nh\u1ea5t<\/li><li>Network firewall s\u1ebd b\u1ea3o v\u1ec7 cho c\u1ea3 m\u1ed9t h\u1ec7 th\u1ed1ng m\u1ea1ng m\u00e1y t\u00ednh.<\/li><\/ul>\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t,\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"Firewall c\u00f3 th\u1ec3 \u201cantivirus\u201d 100%?\",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"<p>Kh\u00f4ng. 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