{"id":210616,"date":"2023-12-22T06:46:22","date_gmt":"2023-12-21T22:46:22","guid":{"rendered":"https:\/\/www.idc.net\/help\/210616\/"},"modified":"2023-12-22T06:46:22","modified_gmt":"2023-12-21T22:46:22","slug":"linux-%e5%91%bd%e4%bb%a4%ef%bc%9aiptables-ipv4-ipv6-%e5%8c%85%e8%bf%87%e6%bb%a4%e5%92%8c-nat-%e7%9a%84%e7%ae%a1%e7%90%86%e5%b7%a5%e5%85%b7","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/210616\/","title":{"rendered":"Linux \u547d\u4ee4\uff1aiptables &#8211; IPv4\/IPv6 \u5305\u8fc7\u6ee4\u548c NAT \u7684\u7ba1\u7406\u5de5\u5177"},"content":{"rendered":"<p><title id=\"linux-%e5%91%bd%e4%bb%a4%ef%bc%9aiptables-ipv4-ipv6-%e5%8c%85%e8%bf%87%e6%bb%a4%e5%92%8c-nat-%e7%9a%84%e7%ae%a1%e7%90%86%e5%b7%a5%e5%85%b7-lHeSymdrSi\">Linux \u547d\u4ee4\uff1aiptables - IPv4\/IPv6 \u5305\u8fc7\u6ee4\u548c NAT \u7684\u7ba1\u7406\u5de5\u5177<\/title><\/p>\n<h1 id=\"linux-%e5%91%bd%e4%bb%a4%ef%bc%9aiptables-ipv4-ipv6-%e5%8c%85%e8%bf%87%e6%bb%a4%e5%92%8c-nat-%e7%9a%84%e7%ae%a1%e7%90%86%e5%b7%a5%e5%85%b7-lHeSymdrSi\">Linux \u547d\u4ee4\uff1aiptables - IPv4\/IPv6 \u5305\u8fc7\u6ee4\u548c NAT \u7684\u7ba1\u7406\u5de5\u5177<\/h1>\n<p>\u5728Linux\u64cd\u4f5c\u7cfb\u7edf\u4e2d\uff0ciptables\u662f\u4e00\u4e2a\u975e\u5e38\u5f3a\u5927\u7684\u5de5\u5177\uff0c\u7528\u4e8e\u7ba1\u7406IPv4\u548cIPv6\u7684\u5305\u8fc7\u6ee4\u548c\u7f51\u7edc\u5730\u5740\u8f6c\u6362\uff08NAT\uff09\u3002\u5b83\u5141\u8bb8\u7cfb\u7edf\u7ba1\u7406\u5458\u914d\u7f6e\u9632\u706b\u5899\u89c4\u5219\uff0c\u63a7\u5236\u7f51\u7edc\u6d41\u91cf\u7684\u8fdb\u51fa\uff0c\u5e76\u63d0\u4f9b\u7f51\u7edc\u5b89\u5168\u6027\u3002<\/p>\n<h2 id=\"iptables%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-lHeSymdrSi\">iptables\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>iptables\u662f\u4e00\u4e2a\u57fa\u4e8e\u5185\u6838\u7684\u9632\u706b\u5899\u5de5\u5177\uff0c\u5b83\u901a\u8fc7\u68c0\u67e5\u7f51\u7edc\u6570\u636e\u5305\u7684\u6e90\u5730\u5740\u3001\u76ee\u6807\u5730\u5740\u3001\u534f\u8bae\u7c7b\u578b\u3001\u7aef\u53e3\u53f7\u7b49\u4fe1\u606f\u6765\u51b3\u5b9a\u662f\u5426\u5141\u8bb8\u901a\u8fc7\u3002\u5b83\u53ef\u4ee5\u5728\u7f51\u7edc\u5c42\u548c\u4f20\u8f93\u5c42\u5bf9\u6570\u636e\u5305\u8fdb\u884c\u8fc7\u6ee4\u548c\u4fee\u6539\u3002<\/p>\n<h2 id=\"iptables%e8%a7%84%e5%88%99-lHeSymdrSi\">iptables\u89c4\u5219<\/h2>\n<p>iptables\u89c4\u5219\u7531\u4e00\u7cfb\u5217\u89c4\u5219\u94fe\u7ec4\u6210\uff0c\u6bcf\u4e2a\u89c4\u5219\u94fe\u5305\u542b\u4e00\u7ec4\u89c4\u5219\u3002\u5f53\u4e00\u4e2a\u6570\u636e\u5305\u5230\u8fbe\u7cfb\u7edf\u65f6\uff0ciptables\u4f1a\u6309\u7167\u9884\u5b9a\u4e49\u7684\u987a\u5e8f\u9010\u4e2a\u68c0\u67e5\u89c4\u5219\u94fe\u4e2d\u7684\u89c4\u5219\uff0c\u76f4\u5230\u627e\u5230\u5339\u914d\u7684\u89c4\u5219\u3002\u5982\u679c\u627e\u5230\u5339\u914d\u7684\u89c4\u5219\uff0ciptables\u4f1a\u6839\u636e\u89c4\u5219\u7684\u52a8\u4f5c\uff08\u5982\u5141\u8bb8\u901a\u8fc7\u3001\u4e22\u5f03\u6216\u91cd\u5b9a\u5411\uff09\u6765\u5904\u7406\u6570\u636e\u5305\u3002<\/p>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684iptables\u89c4\u5219\u94fe\uff1a<\/p>\n<ul>\n<li><strong>INPUT\uff1a<\/strong>\u7528\u4e8e\u5904\u7406\u8fdb\u5165\u7cfb\u7edf\u7684\u6570\u636e\u5305\u3002<\/li>\n<li><strong>FORWARD\uff1a<\/strong>\u7528\u4e8e\u5904\u7406\u901a\u8fc7\u7cfb\u7edf\u8f6c\u53d1\u7684\u6570\u636e\u5305\u3002<\/li>\n<li><strong>OUTPUT\uff1a<\/strong>\u7528\u4e8e\u5904\u7406\u4ece\u7cfb\u7edf\u53d1\u51fa\u7684\u6570\u636e\u5305\u3002<\/li>\n<\/ul>\n<h2 id=\"iptables%e5%91%bd%e4%bb%a4-lHeSymdrSi\">iptables\u547d\u4ee4<\/h2>\n<p>iptables\u547d\u4ee4\u7528\u4e8e\u914d\u7f6e\u548c\u7ba1\u7406iptables\u89c4\u5219\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684iptables\u547d\u4ee4\uff1a<\/p>\n<ul>\n<li><code>iptables -A chain rule<\/code>\uff1a\u5411\u6307\u5b9a\u7684\u89c4\u5219\u94fe\uff08chain\uff09\u6dfb\u52a0\u4e00\u6761\u89c4\u5219\uff08rule\uff09\u3002<\/li>\n<li><code>iptables -D chain rule<\/code>\uff1a\u4ece\u6307\u5b9a\u7684\u89c4\u5219\u94fe\u4e2d\u5220\u9664\u4e00\u6761\u89c4\u5219\u3002<\/li>\n<li><code>iptables -L<\/code>\uff1a\u5217\u51fa\u5f53\u524d\u7684iptables\u89c4\u5219\u3002<\/li>\n<li><code>iptables -F<\/code>\uff1a\u6e05\u7a7a\u6240\u6709\u7684iptables\u89c4\u5219\u3002<\/li>\n<li><code>iptables -P chain target<\/code>\uff1a\u8bbe\u7f6e\u6307\u5b9a\u89c4\u5219\u94fe\u7684\u9ed8\u8ba4\u52a8\u4f5c\uff08target\uff09\u3002<\/li>\n<\/ul>\n<h2 id=\"iptables%e7%a4%ba%e4%be%8b-lHeSymdrSi\">iptables\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u89c1\u7684iptables\u793a\u4f8b\uff1a<\/p>\n<h3 id=\"%e5%85%81%e8%ae%b8ssh%e8%ae%bf%e9%97%ae-lHeSymdrSi\">\u5141\u8bb8SSH\u8bbf\u95ee<\/h3>\n<p>\u5982\u679c\u4f60\u60f3\u5141\u8bb8SSH\u8bbf\u95ee\u4f60\u7684Linux\u670d\u52a1\u5668\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0biptables\u89c4\u5219\uff1a<\/p>\n<pre><code>iptables -A INPUT -p tcp --dport 22 -j ACCEPT\n<\/code><\/pre>\n<p>\u8fd9\u6761\u89c4\u5219\u5141\u8bb8TCP\u534f\u8bae\u7684\u6570\u636e\u5305\u901a\u8fc722\u7aef\u53e3\uff08SSH\u9ed8\u8ba4\u7aef\u53e3\uff09\u3002<\/p>\n<h3 id=\"%e7%a6%81%e6%ad%a2%e7%89%b9%e5%ae%9aip%e8%ae%bf%e9%97%ae-lHeSymdrSi\">\u7981\u6b62\u7279\u5b9aIP\u8bbf\u95ee<\/h3>\n<p>\u5982\u679c\u4f60\u60f3\u7981\u6b62\u7279\u5b9aIP\u5730\u5740\u8bbf\u95ee\u4f60\u7684\u670d\u52a1\u5668\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0biptables\u89c4\u5219\uff1a<\/p>\n<pre><code>iptables -A INPUT -s 192.168.0.100 -j DROP\n<\/code><\/pre>\n<p>\u8fd9\u6761\u89c4\u5219\u5c06\u6765\u81eaIP\u5730\u5740\u4e3a192.168.0.100\u7684\u6570\u636e\u5305\u4e22\u5f03\u3002<\/p>\n<h3 id=\"%e8%ae%be%e7%bd%ae%e9%bb%98%e8%ae%a4%e8%a7%84%e5%88%99-lHeSymdrSi\">\u8bbe\u7f6e\u9ed8\u8ba4\u89c4\u5219<\/h3>\n<p>\u5982\u679c\u4f60\u60f3\u8bbe\u7f6e\u9ed8\u8ba4\u89c4\u5219\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0biptables\u547d\u4ee4\uff1a<\/p>\n<pre><code>iptables -P INPUT DROP\niptables -P FORWARD DROP\niptables -P OUTPUT ACCEPT\n<\/code><\/pre>\n<p>\u8fd9\u4e9b\u547d\u4ee4\u5c06\u8bbe\u7f6e\u8f93\u5165\u548c\u8f6c\u53d1\u89c4\u5219\u4e3a\u4e22\u5f03\uff08DROP\uff09\uff0c\u8f93\u51fa\u89c4\u5219\u4e3a\u5141\u8bb8\uff08ACCEPT\uff09\u3002<\/p>\n<h2 id=\"%e6%80%bb%e7%bb%93-lHeSymdrSi\">\u603b\u7ed3<\/h2>\n<p>iptables\u662fLinux\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u7528\u4e8e\u7ba1\u7406IPv4\u548cIPv6\u5305\u8fc7\u6ee4\u548cNAT\u7684\u5f3a\u5927\u5de5\u5177\u3002\u5b83\u53ef\u4ee5\u5e2e\u52a9\u7cfb\u7edf\u7ba1\u7406\u5458\u914d\u7f6e\u9632\u706b\u5899\u89c4\u5219\uff0c\u63a7\u5236\u7f51\u7edc\u6d41\u91cf\u7684\u8fdb\u51fa\uff0c\u5e76\u63d0\u4f9b\u7f51\u7edc\u5b89\u5168\u6027\u3002\u901a\u8fc7\u4f7f\u7528iptables\u547d\u4ee4\uff0c\u4f60\u53ef\u4ee5\u8f7b\u677e\u5730\u6dfb\u52a0\u3001\u5220\u9664\u548c\u7ba1\u7406\u89c4\u5219\uff0c\u4ee5\u6ee1\u8db3\u4f60\u7684\u7f51\u7edc\u5b89\u5168\u9700\u6c42\u3002<\/p>\n<h3 id=\"%e9%a6%99%e6%b8%af%e6%9c%8d%e5%8a%a1%e5%99%a8%e9%a6%96%e9%80%89%e5%90%8e%e6%b5%aa%e4%ba%91-lHeSymdrSi\">\u9999\u6e2f\u670d\u52a1\u5668\u9996\u9009\u540e\u6d6a\u4e91<\/h3>\n<p>\u5982\u679c\u4f60\u6b63\u5728\u5bfb\u627e\u53ef\u9760\u7684\u9999\u6e2f\u670d\u52a1\u5668\u63d0\u4f9b\u5546\uff0c\u540e\u6d6a\u4e91\u662f\u4f60\u7684\u9996\u9009\u3002\u540e\u6d6a\u4e91\u63d0\u4f9b\u9ad8\u6027\u80fd\u7684\u9999\u6e2f\u670d\u52a1\u5668\uff0c\u4e3a\u4f60\u7684\u4e1a\u52a1\u63d0\u4f9b\u7a33\u5b9a\u53ef\u9760\u7684\u6258\u7ba1\u670d\u52a1\u3002\u4e86\u89e3\u66f4\u591a\u4fe1\u606f\uff0c\u8bf7\u8bbf\u95ee<a href=\"https:\/\/idc.net\">https:\/\/idc.net<\/a>\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Linux \u547d\u4ee4\uff1aiptables - IPv4\/IPv6 \u5305\u8fc7\u6ee4\u548c NAT \u7684\u7ba1\u7406\u5de5\u5177 Linux \u547d\u4ee4\uff1ai [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[27],"tags":[],"class_list":["post-210616","post","type-post","status-publish","format-standard","hentry","category-centos"],"_links":{"self":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/210616","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/comments?post=210616"}],"version-history":[{"count":0,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/210616\/revisions"}],"wp:attachment":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media?parent=210616"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/categories?post=210616"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/tags?post=210616"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}