{"id":1542,"date":"2023-06-25T16:25:33","date_gmt":"2023-06-25T08:25:33","guid":{"rendered":"http:\/\/xinyixx.com\/?p=1542"},"modified":"2023-06-25T16:26:16","modified_gmt":"2023-06-25T08:26:16","slug":"hcie8","status":"publish","type":"post","link":"https:\/\/www.xinyixx.com\/index.php\/2023\/06\/25\/hcie8\/","title":{"rendered":"HCIE\u5b66\u4e60\u4e4b\u8def8\uff1a\u4e00\u4e2aNAT\u5b9e\u9a8c"},"content":{"rendered":"<p>\u4eca\u5929\u4ecb\u7ecd\u8def\u7531\u4ea4\u6362\u6280\u672f\u4e2d\u4e00\u4e2a\u975e\u5e38\u91cd\u8981\u7684\u6982\u5ff5\uff1aNAT<\/p>\n\n\n\n<p>\u7f51\u7edc\u5730\u5740\u8f6c\u6362\u6280\u672f\uff08NAT\uff09\uff0c\u5b83\u53ef\u4ee5\u5c06\u5185\u90e8\u7f51\u7edc\u7684\u79c1\u6709IP\u5730\u5740\u8f6c\u6362\u4e3a\u516c\u7f51IP\u5730\u5740\uff0c\u4ece\u800c\u5b9e\u73b0\u5185\u90e8\u7f51\u7edc\u4e0e\u5916\u90e8\u7f51\u7edc\u7684\u901a\u4fe1\u3002\u8fd9\u79cd\u6280\u672f\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u51b3IPv4\u5730\u5740\u4e0d\u8db3\u7684\u95ee\u9898\uff0c\u5e76\u63d0\u9ad8\u7f51\u7edc\u5b89\u5168\u6027\u3002<\/p>\n\n\n\n<p>NAT\u6280\u672f\u7684\u5b9e\u73b0\u539f\u7406\u662f\u901a\u8fc7\u5728\u8def\u7531\u5668\u6216\u9632\u706b\u5899\u8bbe\u5907\u4e0a\u8bbe\u7f6eNAT\u89c4\u5219\uff0c\u5c06\u5185\u90e8\u7f51\u7edc\u7684\u79c1\u6709IP\u5730\u5740\u6620\u5c04\u4e3a\u516c\u7f51IP\u5730\u5740\uff0c\u4ece\u800c\u5b9e\u73b0\u5185\u90e8\u7f51\u7edc\u4e0e\u5916\u90e8\u7f51\u7edc\u7684\u901a\u4fe1\u3002\u5176\u62d3\u6251\u7ec4\u6210\u901a\u5e38\u5305\u62ec\u4e00\u4e2a\u6216\u591a\u4e2a\u5185\u90e8\u7f51\u7edc\u3001\u4e00\u4e2a\u8def\u7531\u5668\u6216\u9632\u706b\u5899\u8bbe\u5907\u4ee5\u53ca\u4e00\u4e2a\u516c\u7f51IP\u5730\u5740\u3002\u5728\u914d\u7f6eNAT\u65f6\uff0c\u9700\u8981\u6307\u5b9a\u5185\u90e8\u7f51\u7edc\u548c\u5916\u90e8\u7f51\u7edc\u7684\u63a5\u53e3\uff0c\u5e76\u8bbe\u7f6e\u6e90\u5730\u5740\u548c\u76ee\u6807\u5730\u5740\u7684\u6620\u5c04\u5173\u7cfb\u3002\u5e38\u89c1\u7684NAT\u8def\u7531\u914d\u7f6e\u7b56\u7565\u5305\u62ec\u9759\u6001NAT\u3001\u52a8\u6001NAT\u548cPAT\uff08\u7aef\u53e3\u5730\u5740\u8f6c\u6362\uff09\u3002\u5176\u4e2d\u9759\u6001NAT\u5c06\u5185\u90e8\u7f51\u7edc\u7684\u4e00\u4e2a\u56fa\u5b9aIP\u5730\u5740\u6620\u5c04\u4e3a\u4e00\u4e2a\u516c\u7f51IP\u5730\u5740\uff0c\u52a8\u6001NAT\u5219\u6839\u636e\u5185\u90e8\u7f51\u7edc\u7684IP\u5730\u5740\u6c60\u52a8\u6001\u5206\u914d\u516c\u7f51IP\u5730\u5740\uff0c\u800cPAT\u5219\u901a\u8fc7\u6539\u53d8\u7aef\u53e3\u53f7\u6765\u5b9e\u73b0\u591a\u4e2a\u5185\u90e8\u7f51\u7edc\u5171\u4eab\u4e00\u4e2a\u516c\u7f51IP\u5730\u5740\u7684\u8f6c\u6362\u3002<\/p>\n\n\n\n<p>\u6211\u4eec\u5148\u6765\u770b\u62d3\u6251\u56fe\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><noscript><img decoding=\"async\" width=\"1024\" height=\"576\" src=\"http:\/\/xinyixx.com\/wp-content\/uploads\/2023\/06\/image-127-1024x576.png\" alt class=\"wp-image-1543\" srcset=\"https:\/\/www.xinyixx.com\/wp-content\/uploads\/2023\/06\/image-127-1024x576.png 1024w, https:\/\/www.xinyixx.com\/wp-content\/uploads\/2023\/06\/image-127-300x169.png 300w, https:\/\/www.xinyixx.com\/wp-content\/uploads\/2023\/06\/image-127-768x432.png 768w, https:\/\/www.xinyixx.com\/wp-content\/uploads\/2023\/06\/image-127-1536x864.png 1536w, https:\/\/www.xinyixx.com\/wp-content\/uploads\/2023\/06\/image-127.png 1920w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><\/noscript><img decoding=\"async\" width=\"1024\" height=\"576\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%201024%20576%22%3E%3C%2Fsvg%3E\" alt class=\"wp-image-1543 lazyload\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%201024%20576%22%3E%3C%2Fsvg%3E 1024w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" data-srcset=\"https:\/\/www.xinyixx.com\/wp-content\/uploads\/2023\/06\/image-127-1024x576.png 1024w, https:\/\/www.xinyixx.com\/wp-content\/uploads\/2023\/06\/image-127-300x169.png 300w, https:\/\/www.xinyixx.com\/wp-content\/uploads\/2023\/06\/image-127-768x432.png 768w, https:\/\/www.xinyixx.com\/wp-content\/uploads\/2023\/06\/image-127-1536x864.png 1536w, https:\/\/www.xinyixx.com\/wp-content\/uploads\/2023\/06\/image-127.png 1920w\" data-src=\"http:\/\/xinyixx.com\/wp-content\/uploads\/2023\/06\/image-127-1024x576.png\"><\/figure>\n\n\n\n<p>\u8fd9\u91cc\u5199\u5165\u4e86172.16\u548c172.17\u4e24\u4e2a\u5730\u5740\u6bb5\uff0c\u901a\u8fc7202.169.10.0\u7684\u8fd0\u8425\u5546\u7ebf\u8def\u8bbf\u95ee\u4e00\u53f0\u8def\u7531\u5668\u7684\u56de\u73af\u53e3\u6765\u4ee3\u8868\u7f51\u7edc\u5e94\u7528\u3002<\/p>\n\n\n\n<p>\u8fd9\u91cc\u4ea4\u6362\u673a\u4e3a\u7c7b\u4f3c\u96c6\u7ebf\u5668\u529f\u80fd\uff0c\u6ca1\u6709\u914d\u7f6e\u3002<\/p>\n\n\n\n<p>\u8def\u7531\u5668AR2\u914d\u7f6e\u5982\u4e0b\uff1a<\/p>\n\n\n\n<p><code>acl number 2001<br>rule 5 permit source 172.17.1.0 0.0.0.255<br>nat alg ftp enable<br>#<br>nat address-group 1 202.169.10.50 202.169.10.60<br>#<br>interface GigabitEthernet0\/0\/0<br>ip address 202.169.10.1 255.255.255.0<br>nat static global 202.169.10.5 inside 172.16.1.1 netmask 255.255.255.255<br>nat server protocol tcp global 202.169.10.6 ftp inside 172.16.1.3 ftp<br>nat outbound 2001<br>#<br>interface GigabitEthernet0\/0\/1<br>ip address 172.16.1.254 255.255.255.0<br>#<br>interface GigabitEthernet0\/0\/2<br>ip address 172.17.1.254 255.255.255.0<br>#<br>ip route-static 0.0.0.0 0.0.0.0 202.169.10.2<\/code><\/p>\n\n\n\n<p>AC2\u5199\u5165\u4e86ACL\u89c4\u5219\u3001NAT\u914d\u7f6e\u3001\u63a5\u53e3\u914d\u7f6e\u3001\u9759\u6001\u8def\u7531\uff0c\u5177\u4f53\u914d\u7f6e\u8bf4\u660e\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>ACL\u89c4\u5219\uff1aACL\u7f16\u53f7\u4e3a2001\uff0c\u7b2c5\u6761\u89c4\u5219\u5141\u8bb8\u6e90IP\u5730\u5740\u4e3a172.17.1.0\/24\u7684\u6d41\u91cf\u901a\u8fc7\u3002<\/li>\n\n\n\n<li>NAT\u914d\u7f6e\uff1a\u542f\u7528FTP ALG\uff0c\u5b9a\u4e49\u5730\u5740\u7ec41\u5305\u62ec202.169.10.50\u548c202.169.10.60\u3002\u5728GigabitEthernet0\/0\/0\u63a5\u53e3\u4e0a\uff0c\u5b9a\u4e49\u9759\u6001NAT\u89c4\u5219\u5c06172.16.1.1\u6620\u5c04\u4e3a202.169.10.5\u3002\u5b9a\u4e49FTP NAT\u670d\u52a1\u5668\u89c4\u5219\u5c06172.16.1.3\u6620\u5c04\u4e3a202.169.10.6\u3002\u5728\u51fa\u53e3\u65b9\u5411\u5e94\u7528ACL 2001\u3002<\/li>\n\n\n\n<li>\u63a5\u53e3\u914d\u7f6e\uff1aGigabitEthernet0\/0\/0\u63a5\u53e3\u914d\u7f6e\u4e3a202.169.10.1\/24\uff0cGigabitEthernet0\/0\/1\u63a5\u53e3\u914d\u7f6e\u4e3a172.16.1.254\/24\uff0cGigabitEthernet0\/0\/2\u63a5\u53e3\u914d\u7f6e\u4e3a172.17.1.254\/24\u3002<\/li>\n\n\n\n<li>\u9759\u6001\u8def\u7531\uff1a\u9ed8\u8ba4\u8def\u7531\u6307\u5411202.169.10.2\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u8def\u7531\u5668\u4f1a\u5bf9\u6570\u636e\u6d41\u8fdb\u884cACL\u8fc7\u6ee4\u3001NAT\u8f6c\u6362\u548c\u8def\u7531\u8f6c\u53d1\u7b49\u64cd\u4f5c\uff0c\u4ee5\u5b9e\u73b0\u7f51\u7edc\u901a\u4fe1\u3002<\/p>\n\n\n\n<p>\u8def\u7531\u5668AR3\u914d\u7f6e\u5982\u4e0b\uff1a<\/p>\n\n\n\n<p><code>#<br>interface GigabitEthernet0\/0\/0<br>ip address 202.169.10.2 255.255.255.0<br>#<br>interface LoopBack0<br>ip address 202.169.20.1 255.255.255.0<br>#<\/code><\/p>\n\n\n\n<p>AC2\u5199\u5165\u4e86ACL\u89c4\u5219\u3001NAT\u914d\u7f6e\u3001\u63a5\u53e3\u914d\u7f6e\u3001\u9759\u6001\u8def\u7531\uff0c\u5177\u4f53\u914d\u7f6e\u8bf4\u660e\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>GigabitEthernet0\/0\/0\u63a5\u53e3\u7684IP\u5730\u5740\u4e3a202.169.10.2\/24\u3002<\/li>\n\n\n\n<li>Loopback0\u63a5\u53e3\u7684IP\u5730\u5740\u4e3a202.169.20.1\/24\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u7136\u540e\uff0c\u670d\u52a1\u5668\u914d\u7f6e\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><noscript><img decoding=\"async\" width=\"918\" height=\"636\" src=\"http:\/\/xinyixx.com\/wp-content\/uploads\/2023\/06\/image-128.png\" alt class=\"wp-image-1544\" srcset=\"https:\/\/www.xinyixx.com\/wp-content\/uploads\/2023\/06\/image-128.png 918w, https:\/\/www.xinyixx.com\/wp-content\/uploads\/2023\/06\/image-128-300x208.png 300w, https:\/\/www.xinyixx.com\/wp-content\/uploads\/2023\/06\/image-128-768x532.png 768w\" sizes=\"(max-width: 918px) 100vw, 918px\"><\/noscript><img decoding=\"async\" width=\"918\" height=\"636\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20918%20636%22%3E%3C%2Fsvg%3E\" alt class=\"wp-image-1544 lazyload\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20918%20636%22%3E%3C%2Fsvg%3E 918w\" sizes=\"(max-width: 918px) 100vw, 918px\" data-srcset=\"https:\/\/www.xinyixx.com\/wp-content\/uploads\/2023\/06\/image-128.png 918w, https:\/\/www.xinyixx.com\/wp-content\/uploads\/2023\/06\/image-128-300x208.png 300w, https:\/\/www.xinyixx.com\/wp-content\/uploads\/2023\/06\/image-128-768x532.png 768w\" data-src=\"http:\/\/xinyixx.com\/wp-content\/uploads\/2023\/06\/image-128.png\"><\/figure>\n\n\n\n<p>PC\u53ef\u4ee5\u6309\u7167\u670d\u52a1\u5668IP\u914d\u7f6e\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><noscript><img decoding=\"async\" width=\"976\" height=\"666\" src=\"http:\/\/xinyixx.com\/wp-content\/uploads\/2023\/06\/image-129.png\" alt class=\"wp-image-1545\" srcset=\"https:\/\/www.xinyixx.com\/wp-content\/uploads\/2023\/06\/image-129.png 976w, https:\/\/www.xinyixx.com\/wp-content\/uploads\/2023\/06\/image-129-300x205.png 300w, https:\/\/www.xinyixx.com\/wp-content\/uploads\/2023\/06\/image-129-768x524.png 768w\" sizes=\"(max-width: 976px) 100vw, 976px\"><\/noscript><img decoding=\"async\" width=\"976\" height=\"666\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20976%20666%22%3E%3C%2Fsvg%3E\" alt class=\"wp-image-1545 lazyload\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20976%20666%22%3E%3C%2Fsvg%3E 976w\" sizes=\"(max-width: 976px) 100vw, 976px\" data-srcset=\"https:\/\/www.xinyixx.com\/wp-content\/uploads\/2023\/06\/image-129.png 976w, https:\/\/www.xinyixx.com\/wp-content\/uploads\/2023\/06\/image-129-300x205.png 300w, https:\/\/www.xinyixx.com\/wp-content\/uploads\/2023\/06\/image-129-768x524.png 768w\" data-src=\"http:\/\/xinyixx.com\/wp-content\/uploads\/2023\/06\/image-129.png\"><\/figure>\n\n\n\n<p>\u6d4b\u8bd5\u4e00\u4e0b\u5404\u8bbe\u5907\u95f4\u662f\u5426\u4e92\u76f8\u901a\u4fe1\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><noscript><img decoding=\"async\" width=\"976\" height=\"666\" src=\"http:\/\/xinyixx.com\/wp-content\/uploads\/2023\/06\/image-131.png\" alt class=\"wp-image-1547\" srcset=\"https:\/\/www.xinyixx.com\/wp-content\/uploads\/2023\/06\/image-131.png 976w, https:\/\/www.xinyixx.com\/wp-content\/uploads\/2023\/06\/image-131-300x205.png 300w, https:\/\/www.xinyixx.com\/wp-content\/uploads\/2023\/06\/image-131-768x524.png 768w\" sizes=\"(max-width: 976px) 100vw, 976px\"><\/noscript><img decoding=\"async\" width=\"976\" height=\"666\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20976%20666%22%3E%3C%2Fsvg%3E\" alt class=\"wp-image-1547 lazyload\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20976%20666%22%3E%3C%2Fsvg%3E 976w\" sizes=\"(max-width: 976px) 100vw, 976px\" data-srcset=\"https:\/\/www.xinyixx.com\/wp-content\/uploads\/2023\/06\/image-131.png 976w, https:\/\/www.xinyixx.com\/wp-content\/uploads\/2023\/06\/image-131-300x205.png 300w, https:\/\/www.xinyixx.com\/wp-content\/uploads\/2023\/06\/image-131-768x524.png 768w\" data-src=\"http:\/\/xinyixx.com\/wp-content\/uploads\/2023\/06\/image-131.png\"><\/figure>\n\n\n\n<p>\u53d1\u73b0\u80fd\u591fPing\u901a\uff0c\u4e0b\u9762\u518d\u7528PC3\u6d4b\u8bd5\u4e00\u4e0b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><noscript><img decoding=\"async\" src=\"blob:http:\/\/xinyixx.com\/afb49dfb-aa7c-4aac-9dd3-20378cd3b1cc\" alt><\/noscript><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" alt data-src=\"blob:http:\/\/xinyixx.com\/afb49dfb-aa7c-4aac-9dd3-20378cd3b1cc\" class=\" lazyload\"><\/figure>\n\n\n\n<p>\u901a\u8fc7ACL\u7684\u89c4\u5219\uff0c172.17.1.2\u548c172.17.1.3\u540c\u6837\u8bbf\u95ee\u670d\u52a1\u5668\u5730\u5740172.16.1.3\u548c\u5916\u7f51\u7684loopback\uff1a202.169.20.1\u3002\u8fd9\u6837\u8fd9\u4e2a\u5b9e\u9a8c\u5c55\u793a\u4e86\u901a\u8fc7\u8def\u7531\u7b56\u7565\u548cNAT\u6280\u672f\u5b9e\u73b0\u5404\u4e2a\u7f51\u7edc\u8bbe\u5907\u95f4\u7684\u4e92\u76f8\u8bbf\u95ee\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4eca\u5929\u4ecb\u7ecd\u8def\u7531\u4ea4\u6362\u6280\u672f\u4e2d\u4e00\u4e2a\u975e\u5e38\u91cd\u8981\u7684\u6982\u5ff5\uff1aNAT \u7f51\u7edc\u5730\u5740\u8f6c\u6362\u6280\u672f\uff08NAT\uff09\uff0c\u5b83\u53ef\u4ee5\u5c06\u5185\u90e8\u7f51\u7edc\u7684\u79c1\u6709IP\u5730\u5740\u8f6c [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[6,100],"tags":[50,95],"class_list":["post-1542","post","type-post","status-publish","format-standard","hentry","category-build","category-network","tag-building","tag-net","entry"],"_links":{"self":[{"href":"https:\/\/www.xinyixx.com\/index.php\/wp-json\/wp\/v2\/posts\/1542","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xinyixx.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xinyixx.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xinyixx.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xinyixx.com\/index.php\/wp-json\/wp\/v2\/comments?post=1542"}],"version-history":[{"count":0,"href":"https:\/\/www.xinyixx.com\/index.php\/wp-json\/wp\/v2\/posts\/1542\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.xinyixx.com\/index.php\/wp-json\/wp\/v2\/media?parent=1542"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xinyixx.com\/index.php\/wp-json\/wp\/v2\/categories?post=1542"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xinyixx.com\/index.php\/wp-json\/wp\/v2\/tags?post=1542"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}