{"id":45340,"date":"2024-10-06T22:11:18","date_gmt":"2024-10-06T14:11:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/45340\/"},"modified":"2024-10-06T22:11:18","modified_gmt":"2024-10-06T14:11:18","slug":"%e9%80%9a%e9%81%8e-iptables-%e5%af%a6%e7%8f%be%e7%ab%af%e5%8f%a3%e8%bd%89%e7%99%bc","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/45340\/","title":{"rendered":"\u901a\u904e iptables \u5be6\u73fe\u7aef\u53e3\u8f49\u767c"},"content":{"rendered":"<h1 id=\"%e9%80%9a%e9%81%8e-iptables-%e5%af%a6%e7%8f%be%e7%ab%af%e5%8f%a3%e8%bd%89%e7%99%bc-IYYFqOCmmt\">\u901a\u904e iptables \u5be6\u73fe\u7aef\u53e3\u8f49\u767c<\/h1>\n<p>\u5728\u7db2\u7d61\u7ba1\u7406\u4e2d\uff0c\u7aef\u53e3\u8f49\u767c\u662f\u4e00\u9805\u91cd\u8981\u7684\u6280\u8853\uff0c\u5c24\u5176\u662f\u5728\u9700\u8981\u5c07\u5916\u90e8\u8acb\u6c42\u8f49\u767c\u5230\u5167\u90e8\u670d\u52d9\u5668\u7684\u60c5\u6cc1\u4e0b\u3002\u9019\u7a2e\u6280\u8853\u5e38\u898b\u65bc\u9632\u706b\u7246\u914d\u7f6e\u4e2d\uff0c\u7279\u5225\u662f\u4f7f\u7528 Linux \u7cfb\u7d71\u7684 iptables \u5de5\u5177\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u5982\u4f55\u901a\u904e iptables \u5be6\u73fe\u7aef\u53e3\u8f49\u767c\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e7%ab%af%e5%8f%a3%e8%bd%89%e7%99%bc%ef%bc%9f-IYYFqOCmmt\">\u4ec0\u9ebc\u662f\u7aef\u53e3\u8f49\u767c\uff1f<\/h2>\n<p>\u7aef\u53e3\u8f49\u767c\u662f\u5c07\u9032\u5165\u67d0\u500b\u7aef\u53e3\u7684\u7db2\u7d61\u6d41\u91cf\u8f49\u767c\u5230\u53e6\u4e00\u500b\u7aef\u53e3\u6216\u53e6\u4e00\u53f0\u8a2d\u5099\u7684\u904e\u7a0b\u3002\u9019\u5728\u591a\u7a2e\u60c5\u6cc1\u4e0b\u90fd\u975e\u5e38\u6709\u7528\uff0c\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li>\u5c07\u5916\u90e8\u6d41\u91cf\u8f49\u767c\u5230\u5167\u90e8\u7db2\u7d61\u4e2d\u7684\u7279\u5b9a\u670d\u52d9\u5668\u3002<\/li>\n<li>\u5728\u591a\u500b\u670d\u52d9\u5668\u4e0a\u904b\u884c\u76f8\u540c\u7684\u61c9\u7528\u7a0b\u5e8f\uff0c\u4e26\u5c07\u6d41\u91cf\u5206\u914d\u5230\u4e0d\u540c\u7684\u670d\u52d9\u5668\u3002<\/li>\n<li>\u5728\u9632\u706b\u7246\u5f8c\u9762\u904b\u884c\u670d\u52d9\uff0c\u4e26\u9700\u8981\u5c07\u6d41\u91cf\u8f49\u767c\u5230\u5167\u90e8\u670d\u52d9\u5668\u3002<\/li>\n<\/ul>\n<h2 id=\"iptables-%e7%b0%a1%e4%bb%8b-IYYFqOCmmt\">iptables \u7c21\u4ecb<\/h2>\n<p>iptables \u662f Linux \u7cfb\u7d71\u4e2d\u7528\u65bc\u8a2d\u7f6e\u3001\u7dad\u8b77\u548c\u6aa2\u67e5 IP \u6578\u64da\u5305\u904e\u6ffe\u898f\u5247\u7684\u5de5\u5177\u3002\u5b83\u53ef\u4ee5\u7528\u4f86\u63a7\u5236\u9032\u51fa\u7cfb\u7d71\u7684\u7db2\u7d61\u6d41\u91cf\uff0c\u4e26\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u9632\u706b\u7246\u529f\u80fd\u3002\u901a\u904e iptables\uff0c\u6211\u5011\u53ef\u4ee5\u8f15\u9b06\u5730\u5be6\u73fe\u7aef\u53e3\u8f49\u767c\u3002<\/p>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8-iptables-%e5%af%a6%e7%8f%be%e7%ab%af%e5%8f%a3%e8%bd%89%e7%99%bc-IYYFqOCmmt\">\u5982\u4f55\u4f7f\u7528 iptables \u5be6\u73fe\u7aef\u53e3\u8f49\u767c<\/h2>\n<p>\u8981\u901a\u904e iptables \u5be6\u73fe\u7aef\u53e3\u8f49\u767c\uff0c\u9996\u5148\u9700\u8981\u78ba\u4fdd\u7cfb\u7d71\u5df2\u7d93\u5b89\u88dd\u4e86 iptables\u3002\u63a5\u4e0b\u4f86\uff0c\u60a8\u53ef\u4ee5\u6309\u7167\u4ee5\u4e0b\u6b65\u9a5f\u9032\u884c\u914d\u7f6e\uff1a<\/p>\n<h3 id=\"%e6%ad%a5%e9%a9%9f-1%ef%bc%9a%e5%95%9f%e7%94%a8-ip-%e8%bd%89%e7%99%bc-IYYFqOCmmt\">\u6b65\u9a5f 1\uff1a\u555f\u7528 IP \u8f49\u767c<\/h3>\n<p>\u5728 Linux \u7cfb\u7d71\u4e2d\uff0c\u9ed8\u8a8d\u60c5\u6cc1\u4e0b IP \u8f49\u767c\u662f\u7981\u7528\u7684\u3002\u8981\u555f\u7528\u5b83\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code>echo 1 &gt; \/proc\/sys\/net\/ipv4\/ip_forward<\/code><\/pre>\n<p>\u70ba\u4e86\u4f7f\u9019\u4e00\u66f4\u6539\u5728\u91cd\u555f\u5f8c\u4ecd\u7136\u6709\u6548\uff0c\u60a8\u53ef\u4ee5\u7de8\u8f2f \/etc\/sysctl.conf \u6587\u4ef6\uff0c\u4e26\u5c07\u4ee5\u4e0b\u884c\u6dfb\u52a0\u6216\u53d6\u6d88\u8a3b\u91cb\uff1a<\/p>\n<pre><code>net.ipv4.ip_forward = 1<\/code><\/pre>\n<h3 id=\"%e6%ad%a5%e9%a9%9f-2%ef%bc%9a%e8%a8%ad%e7%bd%ae-iptables-%e8%a6%8f%e5%89%87-IYYFqOCmmt\">\u6b65\u9a5f 2\uff1a\u8a2d\u7f6e iptables \u898f\u5247<\/h3>\n<p>\u63a5\u4e0b\u4f86\uff0c\u60a8\u9700\u8981\u8a2d\u7f6e iptables \u898f\u5247\u4f86\u5be6\u73fe\u7aef\u53e3\u8f49\u767c\u3002\u5047\u8a2d\u60a8\u5e0c\u671b\u5c07\u5916\u90e8\u7684 80 \u7aef\u53e3\u6d41\u91cf\u8f49\u767c\u5230\u5167\u90e8 IP \u5730\u5740\u70ba 192.168.1.100 \u7684 8080 \u7aef\u53e3\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code>iptables -t nat -A PREROUTING -p tcp --dport 80 -j DNAT --to-destination 192.168.1.100:8080<\/code><\/pre>\n<p>\u9019\u689d\u547d\u4ee4\u7684\u542b\u7fa9\u662f\uff1a\u7576\u6709 TCP \u6d41\u91cf\u9032\u5165 80 \u7aef\u53e3\u6642\uff0c\u5c07\u5176\u8f49\u767c\u5230 192.168.1.100 \u7684 8080 \u7aef\u53e3\u3002<\/p>\n<h3 id=\"%e6%ad%a5%e9%a9%9f-3%ef%bc%9a%e5%85%81%e8%a8%b1%e6%b5%81%e9%87%8f%e9%80%9a%e9%81%8e-IYYFqOCmmt\">\u6b65\u9a5f 3\uff1a\u5141\u8a31\u6d41\u91cf\u901a\u904e<\/h3>\n<p>\u9664\u4e86\u8a2d\u7f6e\u8f49\u767c\u898f\u5247\u5916\uff0c\u60a8\u9084\u9700\u8981\u5141\u8a31\u6d41\u91cf\u901a\u904e\u9632\u706b\u7246\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u4f86\u5141\u8a31\u6d41\u91cf\uff1a<\/p>\n<pre><code>iptables -A FORWARD -p tcp -d 192.168.1.100 --dport 8080 -j ACCEPT<\/code><\/pre>\n<p>\u9019\u689d\u547d\u4ee4\u5141\u8a31\u6240\u6709\u767c\u5f80 192.168.1.100 \u7684 8080 \u7aef\u53e3\u7684 TCP \u6d41\u91cf\u3002<\/p>\n<h2 id=\"%e6%aa%a2%e6%9f%a5%e5%92%8c%e4%bf%9d%e5%ad%98-iptables-%e8%a6%8f%e5%89%87-IYYFqOCmmt\">\u6aa2\u67e5\u548c\u4fdd\u5b58 iptables \u898f\u5247<\/h2>\n<p>\u5b8c\u6210\u4e0a\u8ff0\u6b65\u9a5f\u5f8c\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u6aa2\u67e5\u7576\u524d\u7684 iptables \u898f\u5247\uff1a<\/p>\n<pre><code>iptables -L -v -n<\/code><\/pre>\n<p>\u5982\u679c\u60a8\u5e0c\u671b\u4fdd\u5b58\u9019\u4e9b\u898f\u5247\u4ee5\u4fbf\u5728\u7cfb\u7d71\u91cd\u555f\u5f8c\u4ecd\u7136\u6709\u6548\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code>service iptables save<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-IYYFqOCmmt\">\u7e3d\u7d50<\/h2>\n<p>\u901a\u904e\u4f7f\u7528 iptables\uff0c\u60a8\u53ef\u4ee5\u8f15\u9b06\u5730\u5be6\u73fe\u7aef\u53e3\u8f49\u767c\uff0c\u9019\u5c0d\u65bc\u7ba1\u7406\u7db2\u7d61\u6d41\u91cf\u548c\u4fdd\u8b77\u5167\u90e8\u670d\u52d9\u5668\u81f3\u95dc\u91cd\u8981\u3002\u7121\u8ad6\u662f\u7528\u65bc\u4f01\u696d\u74b0\u5883\u9084\u662f\u500b\u4eba\u9805\u76ee\uff0c\u638c\u63e1\u9019\u9805\u6280\u8853\u90fd\u80fd\u5e6b\u52a9\u60a8\u66f4\u6709\u6548\u5730\u7ba1\u7406\u7db2\u7d61\u8cc7\u6e90\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u7528\u6236\u3002\u4e86\u89e3\u66f4\u591a\u95dc\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u7684\u4fe1\u606f\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u901a\u904e iptables \u5be6\u73fe\u7aef\u53e3\u8f49\u767c\uff0c\u8f15\u9b06\u914d\u7f6e\u7db2\u7d61\u6d41\u91cf\uff0c\u63d0\u5347\u4f3a\u670d\u5668\u5b89\u5168\u6027\u8207\u6027\u80fd\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4924],"tags":[],"class_list":["post-45340","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/45340","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=45340"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/45340\/revisions"}],"predecessor-version":[{"id":45341,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/45340\/revisions\/45341"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=45340"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=45340"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=45340"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}