{"id":330,"date":"2015-07-24T22:37:16","date_gmt":"2015-07-24T15:37:16","guid":{"rendered":"https:\/\/beta.engisv.info\/?p=330"},"modified":"2015-07-24T22:37:16","modified_gmt":"2015-07-24T15:37:16","slug":"gia-lap-hai-hay-nhieu-duong-truyen-site-nhu-tren-moi-truong-internet","status":"publish","type":"post","link":"https:\/\/www.engisv.info\/?p=330","title":{"rendered":"Gi\u1ea3 l\u1eadp hai hay nhi\u1ec1u \u0111\u01b0\u1eddng truy\u1ec1n, site nh\u01b0 tr\u00ean m\u1ed7i tr\u01b0\u1eddng internet"},"content":{"rendered":"<p>Tr\u00ean th\u1ef1c t\u1ebf, ch\u00fang ta s\u1ebd c\u1ea7n \u0111\u1ebfn c\u00e1c m\u00f4 h\u00ecnh nhi\u1ec1u \u0111\u01b0\u1eddng truy\u1ec1n ho\u1eb7c nhi\u1ec1u site \u0111\u1ec3 c\u1ea5u h\u00ecnh c\u00e1c d\u1ea1ng d\u1ecbch v\u1ee5 nh\u01b0 load balancing v\u00e0 failover, VPN, OpenVPN&#8230; ho\u1eb7c th\u1ef1c h\u00e0nh c\u00e1c lab publish c\u00e1c d\u1ecbch v\u1ee5 nh\u01b0 web, ftp&#8230; Trong b\u00e0i tr\u01b0\u1edbc c\u00e1c, ch\u00fang ta \u0111\u00e3 ti\u1ebfn h\u00e0nh <a href=\"https:\/\/www.engisv.info\/?p=122\" target=\"_blank\">chia s\u1ebd internet cho m\u1ea1ng LAN b\u1eb1ng k\u1ef9 thu\u1eadt NAT overload<\/a>, m\u1ed9t k\u1ef9 thu\u1eadt \u0111\u01b0\u1ee3c d\u00f9ng r\u1ed9ng r\u00e3i tr\u00ean m\u00f4i tr\u01b0\u1eddng IPv4, trong b\u00e0i n\u00e0y ch\u00fang ta s\u1ebd k\u1ebft h\u1ee3p k\u1ef9 thu\u1eadt n\u00e0y v\u1edbi m\u1ed9t s\u1ed1 d\u1ecbch v\u1ee5 kh\u00e1c.<\/p>\n<p>Nh\u01b0 ch\u00fang ta \u0111\u00e3 bi\u1ebft, trong m\u00f4i tr\u01b0\u1eddng m\u1ea1ng IPv4 ng\u01b0\u1eddi ta ph\u00e1t tri\u1ec3n m\u1ed9t d\u1ecbch v\u1ee5 NAT, d\u1ecbch v\u1ee5 n\u00e0y d\u00f9ng \u0111\u1ec3 ti\u1ebft ki\u1ec7m c\u00e1c \u0111\u1ecba ch\u1ec9 IP b\u1edfi v\u00ec IPv4 c\u00f3 s\u1ed1 l\u01b0\u1ee3ng gi\u1edbi h\u1ea1n v\u00e0 ch\u00fang kh\u00f4ng th\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u c\u1ee7a t\u1eebng node m\u1ea1ng tr\u00ean to\u00e0n th\u1ebf gi\u1edbi. C\u01a1 ch\u1ebf NAT overload cho ph\u00e9p m\u00e1y t\u00ednh trong m\u1ea1ng LAN v\u1edbi nhi\u1ec1u IP private s\u1eed d\u1ee5ng duy nh\u1ea5t m\u1ed9t IP Public \u0111\u1ec3 k\u1ebft n\u1ed1i Internet. C\u00e1c m\u00e1y trong LAN khi c\u00f3 nhu c\u1ea7u \u0111i internet s\u1ebd qua modem, modem s\u1ebd d\u00f9ng IP Public truy c\u1eadp v\u00e0 tr\u1ea3 th\u00f4ng tin v\u1ec1 cho m\u00e1y t\u00ednh trong LAN. C\u01a1 ch\u1ebf NAT overload kh\u00f4ng cho ph\u00e9p c\u00e1c m\u00e1y t\u00ednh ngo\u00e0i internet c\u00f3 th\u1ec3 th\u1ea5y \u0111\u01b0\u1ee3c m\u00e1y t\u00ednh trong m\u1ea1ng LAN.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" style=\"margin-left: auto; margin-right: auto;\" src=\"https:\/\/ujqrqw.bn1304.livefilestore.com\/y2plASE2uSx7jEiWdxH1XKilNV6T2a3gXPKS3MXRugpCi3gPqBPCmK_BAIjBHkIO2Pzo0XOeeJ2336PBVDJFUkgPwxsBVW9klFb6Dnge-MFS2A\/0.png?psid=1\" alt=\"\" width=\"400\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>M\u00f4i tr\u01b0\u1eddng intenet l\u00e0 m\u00f4i tr\u01b0\u1eddng ph\u1ee9c t\u1ea1p v\u1edbi nhi\u1ec1u router, s\u1eef d\u1ee5ng nhi\u1ec1u giao th\u1ee9c \u0111\u1ecbnh tuy\u1ebfn, nhi\u1ec1u h\u1ec7 th\u1ed1ng cung c\u1ea5p d\u1ecbch v\u1ee5. Nh\u01b0ng \u0111\u1ec3 \u0111\u01a1n gi\u1ea3n h\u00f3a, ch\u00fang ta t\u01b0\u1edfng t\u01b0\u1ee3ng \u00a0m\u00f4i tr\u01b0\u1eddng internet l\u00e0 m\u1ed9t c\u00e1i switch l\u1edbn, tr\u00ean \u0111\u00f3 c\u00e1c modem \u0111\u1ea7u cu\u1ed1i ph\u00eda ng\u01b0\u1eddi d\u00f9ng c\u1ee7a ch\u00fang ta s\u1ebd \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u00e0o switch n\u00e0y.<\/p>\n<p>\u0110\u1ec3 th\u1ef1c hi\u1ec7n gi\u1ea3 l\u1eadp, b\u1ea1n c\u1ea7n th\u1ef1c hi\u1ec7n m\u00f4 h\u00ecnh sau:<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" style=\"margin-left: auto; margin-right: auto;\" src=\"https:\/\/ujqrqw.bn1301.livefilestore.com\/y2pPyM8TkJZxdnBR_stBeEy6wbDJ5cP0CjiICaeAD1QcsiFsjJzLJi4G4HhNmB8oYytmu5lf-UhY-TbQ0vZtNK3vD3ggzTb-hvMHpoHbEjk4Rg\/1.png?psid=1\" alt=\"\" width=\"400\" \/><\/p>\n<p>B\u1ea1n c\u0169ng c\u1ea7n t\u1eaft t\u00ednh n\u0103ng DHCP c\u00f3 s\u1eb5n tr\u00ean VMnet1 v\u00e0 VMnet2. Bi\u1ebft \u0111\u01b0\u1ee3c l\u1edbp m\u1ea1ng c\u1ee7a VMnet8 v\u00e0 ch\u00fang ta xem l\u1edbp m\u1ea1ng VMnet8 b\u00e2y gi\u1edd l\u00e0 Public IP.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter\" style=\"margin-left: auto; margin-right: auto;\" src=\"https:\/\/ujqrqw.bn1302.livefilestore.com\/y2pZZ2slcnvb8OHBfJxhuMb-aoH-R2J8wucXmtcrbOY6ZAVEQWCufExJo6SO4P0rQw78JUnq_ZSv-5UjiLw56tzIDMXr8bPwA0GcBiu3v7H0LM\/2.png?psid=1\" alt=\"\" width=\"600\" height=\"294\" \/><\/p>\n<p><em><strong>C\u00e1c l\u1ec7nh \u0111\u01b0\u1ee3c d\u00f9ng<\/strong><\/em><\/p>\n<ul>\n<li>config terminal<\/li>\n<li>interface f0\/0<\/li>\n<li>ip address [\u0110\u1ecba ch\u1ec9 IP thu\u1ed9c l\u1edbp m\u1ea1ng VMnet8] [Subnet Mask]<\/li>\n<li>ip nat outside<\/li>\n<li>no shutdown<\/li>\n<li>exit<\/li>\n<li>interface f0\/1<\/li>\n<li>ip address [\u0110\u1ecba ch\u1ec9 IP cho m\u1ea1ng LAN] [Subnet Mask]<\/li>\n<li>ip nat inside<\/li>\n<li>no shutdown<\/li>\n<li>exit<\/li>\n<li>access-list 1 permit [\u0110\u1ecba ch\u1ec9 l\u1edbp m\u1ea1ng c\u1ee7a m\u1ea1ng LAN] [Wildcard mask]<\/li>\n<li>ip nat inside source list 1 interface FastEthernet0\/0 overload<\/li>\n<li>ip name-server [\u0110\u1ecba ch\u1ec9 DNS server]<\/li>\n<li>ip default-gateway [Gateway VMnet8]<\/li>\n<li>ip domain-lookup<\/li>\n<li>ip route 0.0.0.0 0.0.0.0 [Gateway VMnet8]<\/li>\n<li>end<\/li>\n<\/ul>\n<p><em><strong>C\u1ea5p DHCP t\u1eeb router cho m\u1ea1ng LAN<\/strong>:<\/em> Ch\u00fang ta c\u00f3 th\u1ec3 c\u1ea5p IP cho m\u1ea1ng LAN t\u1eeb router \u0111\u1ec3 kh\u00f4ng ph\u1ea3i c\u1ea5u h\u00ecnh b\u1eb1ng tay cho c\u00e1c client.<\/p>\n<ul>\n<li>config terminal<\/li>\n<li>ip dhcp pool [T\u00ean pool]<\/li>\n<li>network [\u0110\u1ecba ch\u1ec9 l\u1edbp m\u1ea1ng c\u1ee7a m\u1ea1ng LAN] [Subnet Mask]<\/li>\n<li>default-router [\u0111\u1ecba ch\u1ec9 IP c\u1ee7a Internal interface]<\/li>\n<li>dns-server [\u0110\u1ecba ch\u1ec9 DNS server]<\/li>\n<li>lease 14 12 23 <em><strong>(Ch\u00fa gi\u1ea3i: \u0111\u00e2y l\u00e0 th\u1eddi gian m\u00e0 client \u0111\u01b0\u1ee3c thu\u00ea \u0111\u1ecba ch\u1ec9 IP, \u1edf \u0111\u00e2y l\u00e0 14 ng\u00e0y, 12 gi\u1edd, 23 ph\u00fat)<\/strong><\/em><\/li>\n<li>exit<\/li>\n<li>ip dhcp excluded-address [\u0111\u1ecba ch\u1ec9 \u0111\u1ea7u] [\u0111\u1ecba ch\u1ec9 cu\u1ed1i] <em><strong>(ch\u00fa gi\u1ea3i: \u0111\u00e2y l\u00e0 d\u1ea1y IP kh\u00f4ng c\u1ea5p cho client)<\/strong><\/em><\/li>\n<li>end<\/li>\n<\/ul>\n<p>B\u1ea1n c\u00f3 th\u1ec3 <a href=\"https:\/\/www.mediafire.com\/download\/38aqswsn4z4tp38\/tao_hai_duong_truyen_-_code_2_router.zip\" target=\"_blank\">t\u1ea3i code m\u1eabu<\/a> v\u1ec1 sau \u0111\u00f3 s\u1eeda l\u1ea1i cho ph\u00f9 h\u1ee3p theo m\u00f4 h\u00ecnh c\u1ee7a m\u00ecnh. Sau khi th\u1ef1c hi\u1ec7n xong code n\u00e0y b\u1ea1n \u0111\u1ee9ng t\u1eeb LAN n\u00e0y truy c\u1eadp qua LAN kia l\u00e0 kh\u00f4ng th\u1ec3, nh\u01b0ng b\u1ea1n c\u00f3 th\u1ec3 truy c\u1eadp intenet b\u00ecnh th\u01b0\u1eddng, c\u1ee5 th\u1ec3 l\u00e0 b\u1ea1n c\u00f3 th\u1ec3 test b\u1eb1ng l\u1ec7nh ping \u0111\u1ec3 ki\u1ec3m tra.<\/p>\n<p><a href=\"https:\/\/www.youtube.com\/watch?v=X_Qr9TmqrPM\" target=\"_blank\">Video h\u01b0\u1edbng d\u1ea9n<\/a> t\u1ea1o hai \u0111\u01b0\u1eddng truy\u1ec1n cho hai site v\u00e0 hai line cho <a href=\"https:\/\/www.engisv.info\/?p=328\" target=\"_blank\">load balancing tr\u00ean pfSense<\/a>. \u0110\u1ec3 gi\u1ea3 l\u1eadp m\u00f4i tr\u01b0\u1eddng m\u1ea1ng n\u00e0y b\u1ea1n c\u1ea7n c\u00e0i \u0111\u1eb7t GNS3 tr\u00ean <a href=\"https:\/\/www.engisv.info\/?p=320\" target=\"_blank\">Windows<\/a> ho\u1eb7c <a href=\"https:\/\/www.engisv.info\/?p=323\" target=\"_blank\">Linux<\/a>.<\/p>\n<p><iframe loading=\"lazy\" src=\"\/\/www.youtube.com\/embed\/X_Qr9TmqrPM\" width=\"560\" height=\"314\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<p>\u0110\u1ec3 c\u00f3 th\u1ec3 NAT inside hay c\u00f2n g\u1ecdi l\u00e0 publish d\u1ecbch v\u1ee5 cho m\u00e1y t\u00ednh LAN 2 c\u00f3 th\u1ec3 truy c\u1eadp v\u00e0o d\u1ecbch v\u1ee5 \u0111\u01b0\u1ee3c tri\u1ec3n khai t\u1eeb LAN 1 b\u1ea1n th\u1ef1c hi\u1ec7n c\u00e2u l\u1ec7nh sau:<\/p>\n<p>ip nat inside source static tcp [IP server] [port d\u1ecbch v\u1ee5] [IP m\u1eb7t ngo\u00e0i c\u1ee7a router] [port d\u1ecbch v\u1ee5] extendable<\/p>\n<p>V\u00ed d\u1ee5 m\u1edf port web:<\/p>\n<p>ip nat inside source static tcp 192.168.100.251 <strong>80<\/strong> 192.168.174.250 <strong>80<\/strong> extendable<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tr\u00ean th\u1ef1c t\u1ebf, ch\u00fang ta s\u1ebd c\u1ea7n \u0111\u1ebfn c\u00e1c m\u00f4 h\u00ecnh nhi\u1ec1u \u0111\u01b0\u1eddng truy\u1ec1n ho\u1eb7c nhi\u1ec1u site \u0111\u1ec3 c\u1ea5u h\u00ecnh c\u00e1c d\u1ea1ng d\u1ecbch v\u1ee5 nh\u01b0 load balancing v\u00e0 failover, VPN, OpenVPN&#8230; ho\u1eb7c th\u1ef1c h\u00e0nh c\u00e1c lab publish c\u00e1c d\u1ecbch v\u1ee5 nh\u01b0 web, ftp&#8230; Trong b\u00e0i tr\u01b0\u1edbc c\u00e1c, ch\u00fang ta \u0111\u00e3 ti\u1ebfn h\u00e0nh chia s\u1ebd internet cho m\u1ea1ng LAN b\u1eb1ng k\u1ef9 thu\u1eadt NAT overload, m\u1ed9t k\u1ef9 thu\u1eadt \u0111\u01b0\u1ee3c d\u00f9ng r\u1ed9ng r\u00e3i tr\u00ean m\u00f4i tr\u01b0\u1eddng IPv4, trong b\u00e0i n\u00e0y ch\u00fang ta s\u1ebd k\u1ebft h\u1ee3p k\u1ef9 thu\u1eadt n\u00e0y v\u1edbi m\u1ed9t s\u1ed1 d\u1ecbch v\u1ee5&hellip;<\/p>\n","protected":false},"author":2,"featured_media":321,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"footnotes":""},"categories":[23,14],"tags":[41],"class_list":["post-330","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-gia-lap-may-ao","category-thu-thuat","tag-gns3"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - 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