{"id":8566,"date":"2024-03-18T13:43:13","date_gmt":"2024-03-18T05:43:13","guid":{"rendered":"https:\/\/egonlin.com\/?p=8566"},"modified":"2024-04-30T12:14:42","modified_gmt":"2024-04-30T04:14:42","slug":"%e9%98%b2%e7%81%ab%e5%a2%99","status":"publish","type":"post","link":"https:\/\/egonlin.com\/?p=8566","title":{"rendered":"\u7b2c\u5341\u4e8c\u7ae0\uff1aiptables\u4e0efirewalld"},"content":{"rendered":"<h1>\u4e00\u3001linux\u7cfb\u7edf\u9632\u706b\u5899\u5e95\u5c42\u539f\u7406<\/h1>\n<p>centos6\u4e0ecentos7\u7684\u9632\u706b\u5899\u7ec4\u4ef6\u90fd\u662f\u5e94\u7528\u5c42\u9762\u7684\u4e1c\u897f\uff0c\u4ed6\u4eec\u7684\u5e95\u5c42\u90fd\u662f\u57fa\u4e8e\u5185\u6838\u7684netfilter\uff08\u8fd9\u662f Linux \u5185\u6838\u7684\u4e00\u90e8\u5206\uff09<\/p>\n<pre>netfilter\u987e\u540d\u601d\u4e49\u5c31\u662f\u7f51\u7edc\u8fc7\u6ee4\uff0c\u800c\u9632\u706b\u5899\u7684\u672c\u8d28\u6070\u6070\u5c31\u662f\u5bf9\u6570\u636e\u5305\u8fdb\u884c\u8fc7\u6ee4\u6216\u8005\u4e00\u4e9b\u6539\u52a8\uff0c\r\n\u6240\u4ee5netfilter\u53ef\u4ee5\u88ab\u79f0\u4e4b\u4e3a\u5185\u6838\u9632\u706b\u5899\u3002<\/pre>\n<p>\u4f46\u662f\u76f4\u63a5\u53bb\u64cd\u4f5c\u5185\u6838\u6a21\u5757netfilter\u6765\u63d2\u5165\/\u4fee\u6539\u4e00\u4e9b\u89c4\u5219\u5fc5\u7136\u662f\u975e\u5e38\u590d\u6742\u7684\uff0c\u56e0\u4e3a\u6ca1\u51e0\u4e2a\u4eba\u6709\u5f00\u53d1\u5185\u6838\u7684\u80fd\u529b<\/p>\n<pre>\u4e3a\u4e86\u7b80\u5355\u4e00\u70b9\uff0c\u6709\u4eba\u5c31\u505a\u4e86\u4e00\u4e9b\u5c01\u88c5\uff0c\u5f62\u6210\u4e86\u4e0a\u5c42\u7684\u5e94\u7528\uff0c\r\n\r\n\u8fd9\u5c31\u662fcentos6\u6216centos7+\u4e2d\u9632\u706b\u5899\u7ec4\u4ef6\u7684\u7531\u6765\uff0c\u90fd\u662f\u5e94\u7528\u5c42\u7684\u4e1c\u897f\u3001\u90fd\u662f\u57fa\u4e8enetfilter\u7684\u5c01\u88c5\r\n\r\n<span style=\"background-color: #ff0000;\">\u4e5f\u5c31\u662f\u8bf4\u65e0\u8bba\u662f6\u8fd8\u662f7\u7684\u7cfb\u7edf\u9632\u706b\u5899\u672c\u8d28\u90fd\u662f\u914d\u7f6enetfilter\u7684\uff0c\u771f\u6b63\u5e72\u6d3b\u7684\u5176\u5b9e\u662f\u5185\u6838\u7684netfilter<\/span><\/pre>\n<h1>\u4e8c\u3001\u5404\u4e2alinux\u9632\u706b\u5899\u7ec4\u4ef6\u6784\u6210<\/h1>\n<div  class='collapse-block shadow-sm collapse-block-transparent collapsed hide-border-left'><div class='collapse-block-title'><span class='collapse-block-title-inner'>centos6\u4e2d\u7684\u9632\u706b\u5899\u76f8\u5173\u7ec4\u4ef6<\/span><i class='collapse-icon fa fa-angle-down'><\/i><\/div><div class='collapse-block-body' style='display:none;'><\/p>\n<p>1\u3001\u4e00\u4e2aiptables\u547d\u4ee4\uff1a\u662f\u4e00\u4e2a\u547d\u4ee4\u884c\u5de5\u5177\uff0c\u5b83\u5141\u8bb8\u7cfb\u7edf\u7ba1\u7406\u5458\u8bbe\u7f6e\u548c\u914d\u7f6e\u5185\u6838\u63d0\u4f9b\u7684\u9632\u706b\u5899\u89c4\u5219\u3002\u4f46\u7528\u547d\u4ee4\u6dfb\u52a0\u7684\u90fd\u662f\u4e34\u65f6\u7684<\/p>\n<pre>\u5bf9\u5e94\u8f6f\u4ef6\u5305iptables.x86_64.xxx.rpm\u7528\u4e8e\u64cd\u4f5c\u5185\u6838\u7ea7\u9632\u706b\u5899\u548c\u5b9e\u65f6\u66f4\u6539\u9632\u706b\u5899\u7684\u884c\u4e3a\uff0c\r\n\u4f46\u8fd9\u4e9b\u66f4\u6539\u662f\u77ed\u6682\u7684\uff0c\u5982\u679c\u4e0d\u4fdd\u5b58\uff0c\u7cfb\u7edf\u91cd\u542f\u540e\uff0c\u8fd9\u4e9b\u89c4\u5219\u5c06\u4e0d\u590d\u5b58\u5728\u3002\r\niptables -I INPUT -i ens33 -s 192.168.80.0\/24 -j DROP<\/pre>\n<p>2\u3001\u4e00\u4e2aiptables\u670d\u52a1\uff1a\u662f\u4e00\u4e2a\u540e\u53f0\u670d\u52a1\uff0c\u5b83\u5728\u7cfb\u7edf\u542f\u52a8\u65f6\u4ece \/etc\/sysconfig\/iptables \u6587\u4ef6\u52a0\u8f7d\u9632\u706b\u5899\u89c4\u5219\uff0c\u800c\u5728\u7cfb\u7edf\u5173\u95ed\u65f6\u4fdd\u5b58\u5f53\u524d\u7684\u9632\u706b\u5899\u89c4\u5219\u5230\u8be5\u6587\u4ef6\u3002<\/p>\n<pre>\u5bf9\u5e94\u8f6f\u4ef6\u5305iptables-services.x86_64.xxxx.rpm \u53ef\u4ee5\u7528service iptables start \u542f\u52a8<\/pre>\n<p>\u603b\u7ed3\uff1a\u5728centos6\u4e2d\uff0ciptables\u547d\u4ee4\u4e0eiptables\u670d\u52a1\u7684\u5173\u7cfb<br \/>\n1\u3001iptables\u547d\u4ee4\u7684\u4f5c\u7528<\/p>\n<p>\u76f4\u63a5\u64cd\u4f5c\u7684\u662f\u5185\u6838\u9632\u706b\u5899netfilter\u89c4\u5219\uff0c\u6240\u4ee5\u4e00\u65e6\u5185\u6838\u91cd\u542f\uff08\u4e5f\u5c31\u662f\u7cfb\u7edf\u91cd\u542f\uff09\u5219\u4f1a\u4e22\u5931<\/p>\n<p>2\u3001iptables\u670d\u52a1\u7684\u4f5c\u7528<\/p>\n<pre>\u800ciptables\u670d\u52a1\u5219\u7528\u4e8e\u4fdd\u6301\u9632\u706b\u5899\u8bbe\u7f6e\u7684\u6301\u4e45\u6027\uff0c\r\n\r\n\u539f\u7406\u5c31\u662f:\r\n\u5728\u7cfb\u7edf\u542f\u52a8\u6216\u8005\u91cd\u542fiptales\u670d\u52a1\u65f6\u52a0\u8f7d\/etc\/sysconfig\/iptables\u6587\u4ef6\u5185\u5bb9\u7136\u540e\u914d\u7f6e\u5230\u5185\u6838netfilter\u91cc\r\n\r\n\u5e76\u5728\u7cfb\u7edf\u5173\u95ed\u65f6\u5c06\u5f53\u524d\u7684\u9632\u706b\u5899\u89c4\u5219\u4fdd\u5b58\u5230\u8be5\u6587\u4ef6\uff0c\u8fd9\u610f\u5473\u7740\u4e00\u52a0\u8f7d\u5c31\u662f\u6574\u4f53\u5237\u4e00\u4e0b\u6240\u6709\u89c4\u5219\u3002<\/pre>\n<p>3\u3001\u57fa\u4e8e1\u7684\u63cf\u8ff0\u53ef\u4ee5\u5f97\u51fa3\u4e2a\u65b0\u7684\u7ed3\u8bba\uff1a<\/p>\n<pre>1.iptables\u547d\u4ee4\u4e0eipables\u670d\u52a1\u5e95\u5c42\u90fd\u662f\u5728\u914d\u7f6enetfilter\r\n2.\u5373\u4fbf\u4f60service iptables stop\u5173\u95ed\u4e86\u9632\u706b\u5899\u670d\u52a1\uff0c\r\n    \u4f60\u4e4b\u524d\u6dfb\u52a0\u7684\u9632\u706b\u5899\u89c4\u5219\u3001\u8fd8\u6709\u4f60\u7528iptables\u65b0\u589e\u7684\u89c4\u5219\u90fd\u4f9d\u7136\u6709\u6548,\u53ea\u662f\u91cd\u542f\u7cfb\u7edf\u540e\u8fd9\u4e9b\u89c4\u5219\u5c31\u4f1a\u6d88\u5931\r\n3.\u4f60\u7528iptables\u547d\u4ee4\u662f\u76f4\u63a5\u4fee\u6539\u5185\u6838netfilter\u89c4\u5219\uff0c\u4f1a\u7acb\u5373\u751f\u6548\uff0c\u6839\u672c\u4e0d\u9700\u8981\u4f60\u91cd\u542f\u4ec0\u4e48\u670d\u52a1\u6240\u4ee5\u5728\u751f\u4ea7\u73af\u5883\u8981\u4e09\u56db\u800c\u540e\u884c<\/pre>\n<p><\/div><\/div>\n<div  class='collapse-block shadow-sm collapse-block-transparent collapsed hide-border-left'><div class='collapse-block-title'><span class='collapse-block-title-inner'>centos7+\u7684\u9632\u706b\u5899\u76f8\u5173\u7ec4\u4ef6\u6709<\/span><i class='collapse-icon fa fa-angle-down'><\/i><\/div><div class='collapse-block-body' style='display:none;'><\/p>\n<p>=====================\u300b\u6784\u6210=\u547d\u4ee4\u884c\u5de5\u5177+\u670d\u52a1<\/p>\n<pre class=\"code\">1\u3001\u4e00\u4e2a firewall-cmd\u547d\u4ee4-----\u300b\u5f88\u660e\u663e\u5bf9\u5e94\u7684\u662fcentos6\u4e2d\u7684iptables\u547d\u4ee4\r\n2\u3001\u4e00\u4e2afirewalld\u670d\u52a1---------\u300b\u5f88\u660e\u663e\u5bf9\u5e94\u7684\u662fcentos6\u4e2d\u7684iptables\u670d\u52a1<\/pre>\n<p>=====================\u300b\u670d\u52a1\u8be6\u89e3<\/p>\n<pre class=\"code\">\u57287\u4e2dfilewalld\u670d\u52a1\u53d6\u4ee3\u4e86iptables\u670d\u52a1\uff0c\u4e8c\u8005\u662f\u51b2\u7a81\u7684\uff0c\u53ea\u80fd\u542f\u52a8\u4e00\u4e2a\uff0c\r\n\u4f60\u8981\u60f3\u7528\u8fc7\u53bb\u7684iptables\u670d\u52a1\uff0c\u90a3\u5fc5\u987b\u5148\u5173\u95ed\u6389firewalld\u670d\u52a1\uff0c\u5e76\u4e14\u8981\u4e0b\u8f7diptables-service.x86_64.xxx.rpm\u5305\u624d\u884c\uff0c\u4e86\u89e3\u5c31\u884c\uff0c\u53ea\u6709\u50bb\u5192\u624d\u4f1a\u9000\u56de\u53bb\u5e72\u8fd9\u79cd\u9000\u6b65\u7684\u4e8b\u60c5\r\n\r\nfirewalld\u670d\u52a1\u8ddfiptables\u670d\u52a1\u6bd4\u8d77\u6765\u81f3\u5c11\u6709\u4e24\u5927\u597d\u5904\uff1a\r\n# 1.firewalld\u53ef\u4ee5\u52a8\u6001\u4fee\u6539\u5355\u6761\u89c4\u5219\uff0c\u800c\u4e0d\u9700\u8981\u50cfiptables\u670d\u52a1\u90a3\u6837\uff0c\u5728\u4fee\u6539\u4e86\u89c4\u5219\u540e\u5fc5\u987b\u5f97\u5168\u90e8\u5237\u65b0\u624d\u53ef\u4ee5\u751f\u6548\uff1b\r\n\r\n# 2.firewalld\u5728\u4f7f\u7528\u4e0a\u8981\u6bd4iptables\u670d\u52a1\u4eba\u6027\u5316\u5f88\u591a\uff0c\u5373\u4f7f\u4e0d\u660e\u767d\u201c\u4e94\u5f20\u8868\u4e94\u6761\u94fe\u201d\u800c\u4e14\u5bf9TCP\/IP\u534f\u8bae\u4e5f\u4e0d\u7406\u89e3\u4e5f\u53ef\u4ee5\u5b9e\u73b0\u5927\u90e8\u5206\u529f\u80fd\u3002\r\n<\/pre>\n<p>=====================\u300b\u547d\u4ee4\u884c\u5de5\u5177\u8be6\u89e3<\/p>\n<pre class=\"code\">centos7\u4e2d\u63d0\u4f9b\u4e86\u66f4\u7b80\u5355\u7684firewall-cmd\u547d\u4ee4\uff0c\u529b\u6c42\u53d6\u4ee36\u4e2d\u7684\u547d\u4ee4\u3002\r\n\u4f46\u662f\u4f46\u662f\u4f46\u662f\r\n\u867d\u7136centos6\u4e2d\u7684iptables\u547d\u4ee4\u5bf9\u5c0f\u767d\u4e0d\u592a\u53cb\u597d\uff0c\u96be\u5b66\uff0c\u4f46\u6bd5\u7adf\u4e00\u4e9b\u4eba\u662f\u5b66\u4f1a\u4e86\u7684\uff0c\u4f60centos7\u8bf4\u4e0d\u8ba9\u7528\u5c31\u4e0d\u8ba9\u7528\u4e86\uff0c\u90a3\u4e00\u7fa4\u4eba\u8981\u54ed\u6655\u5728\u5395\u6240\u3002\r\n\u4e8e\u662fcentos7\u5bf9\u5927\u5bb6\u8bf4\uff0c\u8fd9\u4e48\u7740\u5427\uff0c\u5728centos7+\u4e4b\u540e\uff0c\u5173\u4e8e\u9632\u706b\u5899\u670d\u52a1\u6211\u80af\u5b9a\u662f\u8981\u6362\u6210firewalld\u7684\uff0c\u8fd9\u4e2a\u6ca1\u5546\u91cf\uff0c\u56e0\u4e3a\u6211\u592a\u60f3\u8fdb\u6b65\u4e86\u3002\r\n\u4f46\u662f\u6211\u4e5f\u7167\u987e\u4e00\u4e0b\u4f60\u4eec\u8fc7\u53bb\u90a3\u4e9b\u5403\u7740\u7c97\u7ce0\u8fc7\u6765\u7684\u5c4c\u4e1d\u4eec\uff0ciptables\u8fd9\u4e2a\u547d\u4ee4\u5c31\u7ed9\u4f60\u4eec\u7559\u7740\r\n\u4e8e\u662f\u4f60\u4f1a\u53d1\u73b0\u5728centos7+\u4e2d\u8fd8\u4fdd\u7559\u7740iptables\u547d\u4ee4\uff0c\u5c4c\u4e1d\u4eec\u4e00\u8fb9\u611f\u8c22\u5b98\u65b9\u7684\u4e0d\u6740\u4e4b\u6069\uff0c\r\n\r\n\u4e00\u8fb9\u53d1\u73b0\u4e0d\u592a\u5bf9\u52b2\u5c31\u95ee\u9898\u5b98\u65b9\uff1a\u90a3\u6211\u7528iptables\u547d\u4ee4\u5c82\u4e0d\u662f\u53ea\u80fd\u4e34\u65f6\u6dfb\u52a0\u91cd\u542f\u5185\u6838\u5219\u4e22\u4e86\uff0c\u6ca1\u6709\u81ea\u52a8\u5e2e\u6211\u6301\u4e45\u5316\u7684\u670d\u52a1\u554a\u3002\u5b98\u65b9\u56de\u7b54\uff1a\u6eda\u4e00\u8fb9\u53bb\r\n\u76f8\u4fe1\uff1a\u5b98\u65b9\u7ed9\u4f60\u7559\u7740iptables\u547d\u4ee4\u7684\u65f6\u95f4\u4e5f\u5e76\u4e0d\u4f1a\u592a\u957f\uff0c\u4e14\u884c\u4e14\u73cd\u60dc\u5427\uff0c\u8981\u4ec0\u4e48\u81ea\u884c\u8f66\r\n\u4f60\u8981\u5c31\u60f3\u7528iptables\uff0c\u8fd8\u60f3\u80fd\u6301\u4e45\u5316\uff0c\u5176\u5b9e\u4e5f\u5e76\u4e0d\u662f\u4e00\u5b9a\u8981\u7528iptables\u670d\u52a1\uff0c\u4f60\u5c31\u628a\u4f60\u7684iptables\u6dfb\u52a0\u89c4\u5219\u7684\u547d\u4ee4\r\n\u90fd\u5199\u5230\u4e00\u4e2a\u811a\u672c\u91cc\uff0c\u7136\u540e\u6dfb\u52a0\u5230\/etc\/rc.local\u91cc\u5f00\u542f\u5c31\u6267\u884c\uff0c\u4e00\u6837\u53ef\u4ee5\u5b9e\u73b0\r\n\u6240\u4ee5\u61c2\u4e86\u8fd9\u4e9b\u5173\u7cfb\u6ca1\u6709\uff0cnetfilter\u5185\u6838\u9632\u706b\u5899\u624d\u662f\u6838\u5fc3\uff0c\u8fd9\u4e2a\u4e1c\u897f\u5b98\u65b9\u662f\u4e0d\u4f1a\u52a8\u7684\uff0c\r\n\r\n\u4e0a\u5c42\u7684\u7ba1\u7406\u5de5\u5177\u4e00\u5b9a\u662f\u8d8b\u5411\u4e8e\u8d8a\u6765\u8d8a\u7b80\u5355\u7684\uff0ciptables\u547d\u4ee4\u8fd9\u79cd\u6666\u6da9\u5bf9\u5c0f\u767d\u4e0d\u53cb\u597d\u7684\u4e1c\u897f\u65e9\u5c31\u8be5\u6254\u8fdb\u5783\u573e\u5806\u91cc\u4e86\uff0c\u8fd9\u4e48\u770b\uff0c \u5b98\u65b9\u505a\u7684\u6ca1\u6bdb\u75c5\u3002\r\n<\/pre>\n<p><\/div><\/div>\n<h1>\u4e09\u3001iptables\u7684\u4e94\u94fe\u56db\u8868\u8bbe\u8ba1<\/h1>\n<div  class='collapse-block shadow-sm collapse-block-transparent collapsed hide-border-left'><div class='collapse-block-title'><span class='collapse-block-title-inner'>\u4e94\u94fe\uff1a\u94fe\u5373\u94fe\u8def\uff0c\u9632\u706b\u5899\u89c4\u5219\u90fd\u662f\u6dfb\u52a0\u5230\u94fe\u4e0a\u7684<\/span><i class='collapse-icon fa fa-angle-down'><\/i><\/div><div class='collapse-block-body' style='display:none;'><\/p>\n<p>\u6570\u636e\u6d41\u5165linux\u7cfb\u7edf\uff0c\u603b\u7ed3\u4e0b\u6765\u5c31\u6d89\u53ca\u4e94\u79cd\u6d41\u5411\uff0c\u6216\u8005\u53eb5\u4e2d\u94fe\u8def<\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2024\/03\/image-1710746055978.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2024\/03\/image-1710746055978.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"file\" \/><\/div><br \/>\n\u5982\u4e0a\u56fe\uff1a\u5bf9\u4e8e\u8f6c\u53d1\u7684\u6570\u636e\u5305\u6570\u636e\u6d41\u5411\u5982\u4e0b<br \/>\nPREROUTING &#8211;&gt; FORWARD &#8211;&gt; POSTROUTING<br \/>\n\u8981\u8fdb\u5165\u7528\u6237\u7a7a\u95f4\u7684\u5c31\u8d70INPUT<br \/>\n\u4ece\u7528\u6237\u7a7a\u95f4\u51fa\u6765\u51c6\u5907\u53d1\u51fa\u53bb\u7684\u8d70OUTPUT<\/p>\n<p>\u753b\u4e2a\u7b80\u56fe\uff1a<br \/>\n<div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2024\/03\/image-1710746389973.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2024\/03\/image-1710746389973.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"file\" \/><\/div><\/p>\n<p>\u6570\u636e\u6d41\u5165\u5185\u6838\u76845\u79cd\u94fe\u8def\uff0c\u4e5f\u6b63\u597d\u5bf9\u5e94iptables\u76845\u79cd\u94fe\u540d\uff0c\u8fd9\u4e9b\u94fe\u8def\u5c31\u597d\u50cf\u662f\u4e00\u9053\u9053\u5173\u5361\uff0c\u6211\u4eec\u5c31\u5e94\u8be5\u5728\u8fd9\u4e9b\u94fe\u4e0a\u6dfb\u52a0\u9632\u706b\u5899\u89c4\u5219<\/p>\n<p><\/div><\/div>\n<div  class='collapse-block shadow-sm collapse-block-transparent collapsed hide-border-left'><div class='collapse-block-title'><span class='collapse-block-title-inner'>\u56db\u8868\uff1a\u8868\u662f\u5bf9\u9632\u706b\u5899\u6761\u76ee\u7684\u5f52\u7c7b\uff0c\u6bcf\u4e2a\u8868\u90fd\u4ee3\u8868\u4e86\u4e00\u7c7b\u529f\u80fd<\/span><i class='collapse-icon fa fa-angle-down'><\/i><\/div><div class='collapse-block-body' style='display:none;'><br \/>\n1\u3001\u8868\u662f\u4e2a\u5565\uff1f\u4e3a\u5565\u8981\u6709\u8868\uff1f<\/p>\n<pre>\u4e8b\u5b9e\u4e0a\u6ca1\u6709\u8868\u5b8c\u5168\u53ef\u4ee5\uff0c\u4f60\u5c31\u7528\u4e0a\u4e00\u5c0f\u8282\u6211\u4eec\u5b66\u7684\u77e5\u8bc6\uff0c\u5c31\u53ef\u4ee5\u6dfb\u52a0\u9632\u706b\u5899\u89c4\u5219\u4e86\uff0c\u672c\u8d28 \u5c31\u662f\u5728\u5f80\u94fe\u4e0a\u52a0\u89c4\u5219\u5457\u3002<\/pre>\n<p>\u4f46\u662f\u4f46\u662f\u4f46\u662f<\/p>\n<pre>\u968f\u7740\u4f60\u5f80\u94fe\u4e0a\u6dfb\u52a0\u7684\u89c4\u5219\u8d8a\u6765\u8d8a\u591a\uff0c\u5047\u8bbe\u4f60\u6dfb\u52a0\u5230\u4e86\u4e00\u4e07\u6761\uff0c\u4f60\u4f1a\u53d1\u73b0\u8d8a\u6765\u8d8a\u96be\u4ee5\u7ba1\u7406\uff0c\u592a\u6df7\u4e71\u4e86\uff0c\u592a\u4e71\u4e86\u3002\r\n\u4f46\u8fd9\u96be\u4e0d\u5012\u806a\u660e\u7684\u4f60\uff0c\u4f60\u53d1\u73b0\u8fd9\u4e00\u4e07\u6761\u89c4\u5219\u91cc\uff0c\u975e\u5e38\u6709\u89c4\u5f8b\u5730\u53ef\u4ee5\u5206\u4e3a\u51e0\u5927\u7c7b\uff1a\r\n1\u3001\u5bf9\u4e8e\u67d0\u4e9b\u7279\u5b9a\u7684\u6570\u636e\u5305\uff0c\u6211\u4eec\u5e0c\u671b\u963b\u6b62\u5b83\u4eec\u88ab Netfilter \u7684\u8fde\u63a5\u8ddf\u8e2a\u7cfb\u7edf\u5904\u7406\u3002\r\n1\u3001\u5bf9\u6570\u636e\u5305\u505a\u4fee\u6539\u3001\u6253\u6807\u8bb0\r\n2\u3001\u5bf9\u6570\u636e\u5305\u91cc\u7684ip\u5730\u5740\u505anat\u8f6c\u6362\r\n3\u3001\u5bf9\u6570\u636e\u5305\u505a\u7b5b\u9009\uff0c\u4e00\u4e9b\u5305\u8fc7\u6ee4\u6389\uff08\u6700\u5e38\u7528\uff09<\/pre>\n<p>\u6240\u4ee5\u8868\u5230\u5e95\u662f\u4e2a\u5565<\/p>\n<pre>\u4f60\u731c\u7684\u6ca1\u9519\uff0c\u4e0a\u9762\u7684\u56db\u5927\u5206\u7c7b\uff0c\u5c31\u662fiptables\u79cd\u56db\u5f20\u8868\u7684\u7531\u6765\uff0c\u6ca1\u9519\uff0c\u8868\u7684\u672c\u8d28\u5c31\u662f\u5bf9\u89c4\u5219\u7684\u8fdb\u884c\u4e86\u5f52\u7c7b\uff0c\r\n\u4e00\u79cd\u8868\u4ee3\u8868\u7684\u5c31\u662f\u4e00\u7c7b\u529f\u80fd\u3002\u8868\u7684\u8bde\u751f\uff0c\u662f\u8bbe\u8ba1\u8005\u5bf9\u89c4\u5219\u7684\u529f\u80fd\u8fdb\u884c\u603b\u7ed3\u5f52\u7eb3\u7684\u7ed3\u679c\u3002<\/pre>\n<p>\u603b\u7ed3\u4e0b\uff1a<\/p>\n<pre>\u94fe\uff1a\u94fe\u5c31\u662f\u5173\u5361\uff0c\u9632\u706b\u5899\u89c4\u5219\u5c31\u662f\u52a0\u8f7d\u94fe\u4e0a\u7684\r\n\u8868\uff1a\u8868\u5c31\u662f\u5bf9\u4e0d\u540c\u7684\u89c4\u5219\u8fdb\u884c\u4e86\u5f52\u7c7b\uff0c\u6bcf\u79cd\u8868\u90fd\u6709\u81ea\u5df1\u7279\u5b9a\u7684\u542b\u4e49\u3002\r\n\u4e00\u79cd\u8868\u5c31\u4ee3\u8868\u4e00\u7c7b\u529f\u80fd\uff0c\u6240\u4ee5\u6bcf\u5f53\u4f60\u770b\u5230\u4e00\u79cd\u8868\u7684\u65f6\u5019\uff0c\u5c31\u544a\u8bc9\u81ea\u5df1\uff0c\u6211\u770b\u5230\u7684\u662fxxx\u529f\u80fd\u5c31\u884c\uff0c\u8868\u5c31\u662f\u529f\u80fd\u7684\u4ee3\u8868\u3002\r\n<div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2024\/03\/image-1710751212756.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2024\/03\/image-1710751212756.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"file\" \/><\/div>\r\n\u4e0a\u9762\u7684\u4f5c\u56fe\u5730\u5740\u5728\u8fd9\u91cc\uff1a<a href=\"https:\/\/www.processon.com\/diagraming\/58883630e4b049e795e80bcf\">https:\/\/www.processon.com\/diagraming\/58883630e4b049e795e80bcf<\/a><\/pre>\n<p>\u56db\u5927\u7c7b\u8868-4\u5927\u7c7b\u529f\u80fd<\/p>\n<pre>raw\u8868\u7684\u529f\u80fd\uff1a\u4ee3\u8868\u963b\u6b62\u8ffd\u8e2a\uff0c\u5305\u542b\u4e86\/\u5de5\u4f5c\u5728PREROUTING\u3001OUTPUT\r\nmangle\u8868\u7684\u529f\u80fd\uff1a\u4ee3\u8868\u4fee\u6539\u6216\u505a\u8bb0\u53f7\uff0c\u5305\u542b\u4e86\/\u5de5\u4f5c\u57285\u4e2a\u94fe\u90fd\u6709\u4e86\r\nnat\u8868\u7684\u529f\u80fd\uff1a\u4ee3\u8868\u505a\u6e90ip\u6216\u76ee\u6807ip\u8f6c\u6362\uff0c\u5305\u542b\u4e86\/\u5de5\u4f5c\u5728PREROUTING\u3001INPUT\u3001OUTPUT\u3001POSTROUTING\r\nfilter\u8868\u7684\u529f\u80fd\uff1a\u4ee3\u8868\u8fc7\u6ee4\uff0c\u5305\u542b\u4e86\/\u5de5\u4f5c\u5728INPUT\u3001FORWARD\u3001OUTPUT\r\n\u6240\u4ee5\u8bf7\u544a\u8bc9\u6211\u4eec5\u4e2a\u94fe\u8def\u4e0a\u90fd\u53ef\u4ee5\u52a0\u54ea\u4e9b\u529f\u80fd\u7684\u89c4\u5219\uff0c\u4f60\u5e94\u8be5\u77e5\u9053\u7b54\u6848\u4e86\u3002<\/pre>\n<p><\/div><\/div>\n<div  class='collapse-block shadow-sm collapse-block-transparent collapsed hide-border-left'><div class='collapse-block-title'><span class='collapse-block-title-inner'>\u4e94\u94fe\u56db\u8868\u5de5\u4f5c\u6d41\u7a0b<\/span><i class='collapse-icon fa fa-angle-down'><\/i><\/div><div class='collapse-block-body' style='display:none;'><\/p>\n<pre>\u6570\u636e\u5305\u6d41\u5165\u5230\u6d41\u51fa\uff0c\u5c31\u597d\u6bd4\u662f\u4e00\u4e2a\u5feb\u9012\u5305\u88f9\u9001\u8fdb\u5feb\u9012\u7ad9\uff0c\u7136\u540e\u7531\u5feb\u9012\u7ad9\u5904\u7406\u540e\u53d1\u51fa\r\n5\u4e2a\u94fe\u8def\u5c31\u597d\u6bd4\u662f\uff1a\u5feb\u9012\u7ad9\u91cc\u8bbe\u7f6e\u4e865\u9053\u6d41\u7a0b\u6216\u8005\u5173\u5361\uff0c\u6570\u636e\u5305\u8981\u901a\u8fc7\u8fd9\u4e00\u4e2a\u4e2a\u5173\u5361\uff08\u5177\u4f53\u8d70\u54ea\u4e2a\u5173\u5361\uff0c\u770b\u6570\u636e\u5305\u81ea\u5df1\uff09\r\n4\u5f20\u8868\u5c31\u597d\u6bd4\u662f\uff1a\u4e00\u4e2a\u4e2a\u8d1f\u8d23\u4e13\u95e8\u4e8b\u9879\u7684\u68c0\u9a8c\u5458\uff0c\u4ed6\u4eec\u56db\u4e2a\u6709\u4f18\u5148\u7ea7\u4e4b\u5206\uff0craw&gt;mangle&gt;nat&gt;filter\r\n\r\n<div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2024\/03\/image-1710750334952.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2024\/03\/image-1710750334952.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"file\" \/><\/div>\r\n\u5982\u4e0a\u56fe\uff1a\r\n1\u3001\u6570\u636e\u5305\u8d70\u5230\u7b2c\u4e00\u9053\u5173\u5361PREROUTING\uff1a\u4e09\u4e2a\u68c0\u9a8c\u5458\u6309\u6b21\u5e8f\u5bf9\u5305\u8fdb\u884c\u5904\u7406\uff0craw\u5148\u4e0a\u3001mangle\u518d\u4e0a\u3001\u6700\u540e\u662fnat\r\n2\u3001\u7136\u540e\u6570\u636e\u5305\u53ef\u80fd\u4f1a\u8d70\u5165\u7b2c\u4e8c\u9053\u5173\u5361INPUT\uff1a\u4e24\u4e2a\u68c0\u9a8c\u5458\u4f9d\u6b21\u5e8f\u5bf9\u5305\u8fdb\u884c\u5904\u7406\uff0cmangle\u5148\u4e0a\uff0cfilter\u5728\u4e0a\r\n\u3002\u3002\u3002\u3002\u3002\u3002\u3002\r\n<\/pre>\n<p>\u8be6\u89e3\u5982\u4e0b<\/p>\n<pre>\u4e3b\u673a\u578b\u9632\u706b\u5899\r\n\r\n\u5165\u7ad9\u6570\u636e\uff08\u6765\u81ea\u5916\u754c\u7684\u6570\u636e\u5305\uff0c\u4e14\u76ee\u6807\u5730\u5740\u662f\u9632\u706b\u5899\u672c\u673a\uff09\r\n\u3000\u3000PREROUTING --&gt; INPUT --&gt; \u672c\u673a\u7684\u5e94\u7528\u7a0b\u5e8f\r\n\u51fa\u7ad9\u6570\u636e\uff08\u4ece\u9632\u706b\u5899\u672c\u673a\u5411\u5916\u90e8\u5730\u5740\u53d1\u9001\u7684\u6570\u636e\u5305\uff09\r\n\u3000\u3000\u672c\u673a\u7684\u5e94\u7528\u7a0b\u5e8f --&gt; OUTPUT --&gt; POSTROUTING\r\n\u7f51\u7edc\u578b\u9632\u706b\u5899\r\n\r\n\u8f6c\u53d1\u6570\u636e\uff08\u9700\u8981\u7ecf\u8fc7\u9632\u706b\u5899\u8f6c\u53d1\u7684\u6570\u636e\u5305\uff09\r\n\u3000\u3000PREROUTING --&gt; FORWARD --&gt; POSTROUTING\r\n\u89c4\u5219\u94fe\u5185\u7684\u5339\u914d\u987a\u5e8f\r\n\r\n\u81ea\u4e0a\u5411\u4e0b\u6309\u987a\u5e8f\u4f9d\u6b21\u8fdb\u884c\u68c0\u67e5\uff0c\u627e\u5230\u76f8\u5339\u914d\u7684\u89c4\u5219\u5373\u505c\u6b62\uff08LOG\u7b56\u7565\u4f8b\u5916\uff0c\u8868\u793a\u8bb0\u5f55\u76f8\u5173\u65e5\u5fd7\uff09\r\n\u82e5\u5728\u8be5\u94fe\u5185\u627e\u4e0d\u5230\u76f8\u5339\u914d\u7684\u89c4\u5219\uff0c\u5219\u6309\u8be5\u94fe\u7684\u9ed8\u8ba4\u7b56\u7565\u5904\u7406\uff08\u672a\u4fee\u6539\u7684\u72b6\u51b5\u4e0b\uff0c\u9ed8\u8ba4\u7b56\u7565\u4e3a\u5141\u8bb8\uff09\r\n\r\n\u66f4\u591a\u5185\u5bb9\u89c1\uff1a<a href=\"https:\/\/www.cnblogs.com\/linhaifeng\/p\/15979888.html\">https:\/\/www.cnblogs.com\/linhaifeng\/p\/15979888.html<\/a><\/pre>\n<p><\/div><\/div>\n<h1>\u56db\u3001firewalld\u7684\u65b0\u8bbe\u8ba1\uff08\u66f4\u7b80\u5355\u9ad8\u6548\uff09<\/h1>\n<p>\u4e3a\u5565\u5728centos7\u4e2d\u6211\u7528iptables\u547d\u4ee4\u67e5\u51fa\u6765\u7684\u7ed3\u679c\u53d1\u73b0\u591a\u51fa\u4e86\u5f88\u591a\u94fe\uff0c\u800c\u4e0d\u662f\u4e94\u4e2a\u57fa\u672c\u7684\u9884\u5b9a\u4e49\u94fe\uff08INPUT\u3001OUTPUT\u3001FORWARD\u3001PREROUTING\u3001POSTROUTING\uff09\uff1f\uff1f\uff1f\uff1f\uff1f\uff1f<\/p>\n<pre>\u56e0\u4e3afirewalld\u4f7f\u7528\u4e86\u4e00\u79cd\u66f4\u590d\u6742\u7684\u7b56\u7565\u6765\u5904\u7406\u9632\u706b\u5899\u89c4\u5219\uff0c\u65b0\u589e\u4e86\u5f88\u591a\u94fe\u5bf9\u5e94\u5230netfiler\u4e0a\uff0c\r\n\u800ciptables\u4e0efirewalld\u5e95\u5c42\u90fd\u662f\u5728\u64cd\u4f5cnetfilter\u8868\uff0c\r\n\r\n\u5373netfilter\u8868\u662f\u4e8c\u8005\u5171\u4eab\u7684\uff0c\u6240\u4ee5firewalld\u65b0\u589e\u4e1c\u897f\uff0c\u4f60\u7528iptables\u5f53\u7136\u80fd\u67e5\u51fa\u6765\uff01\uff01\uff01\uff01<\/pre>\n<p>firewalld \u901a\u8fc7\u6dfb\u52a0\u989d\u5916\u7684\u94fe\u548c\u89c4\u5219\u6765\u652f\u6301\u533a\u57df\uff08zones\uff09\u6982\u5ff5\u3002<\/p>\n<pre>\u5176\u4e2d\u6bcf\u4e00\u4e2a\u533a\u57df\u5bf9\u5e94\u4e00\u4e2a\u94fe\uff0c\u8fd9\u6837\u7684\u8bbe\u8ba1\u4f7f\u5f97 firewalld \u53ef\u4ee5\u66f4\u7cbe\u7ec6\u5730\u63a7\u5236\u4e0d\u540c\u7c7b\u578b\u7684\u7f51\u7edc\u6d41\u91cf\u3002\r\n\u4f8b\u5982\uff0c\u5b83\u53ef\u4ee5\u4e3a\u4e00\u4e2a\u7279\u5b9a\u7684\u7f51\u7edc\u63a5\u53e3\u6216\u8005\u4e00\u4e2a\u7279\u5b9a\u7684 IP \u5730\u5740\u8303\u56f4\u5b9a\u4e49\u4e0d\u540c\u7684\u8fc7\u6ee4\u89c4\u5219\u3002\r\n\r\n\u6b64\u5916\uff0c\u7528\u6237\u4e5f\u53ef\u4ee5\u81ea\u5df1\u521b\u5efa\u81ea\u5b9a\u4e49\u94fe\u3002\u81ea\u5b9a\u4e49\u94fe\u9664\u4e86 iptables \u81ea\u5e26\u76845\u4e2a\u9884\u5b9a\u4e49\u94fe\u4e4b\u5916\uff0c\u7531\u7528\u6237\u81ea\u5b9a\u4e49\u7684\u65b0\u94fe\u3002\r\n\u5728\u81ea\u5b9a\u4e49\u94fe\u4e2d\u5b9a\u4e49\u7684\u89c4\u5219\u9700\u8981\u88ab\u5185\u7f6e\u94fe\u5f15\u7528\u624d\u53ef\u4ee5\u751f\u6548\u3002<\/pre>\n<div  class='collapse-block shadow-sm collapse-block-transparent collapsed hide-border-left'><div class='collapse-block-title'><span class='collapse-block-title-inner'>\u4e00\u4e2a\u91cd\u8981\u7684\u6982\u5ff5\uff1a\u533a\u57df\u7ba1\u7406<\/span><i class='collapse-icon fa fa-angle-down'><\/i><\/div><div class='collapse-block-body' style='display:none;'><\/p>\n<p>\u901a\u8fc7\u5c06\u7f51\u7edc\u5212\u5206\u6210\u4e0d\u540c\u7684\u533a\u57df\uff0c\u5236\u5b9a\u51fa\u4e0d\u540c\u533a\u57df\u4e4b\u95f4\u7684\u8bbf\u95ee\u63a7\u5236\u7b56\u7565\u6765\u63a7\u5236\u4e0d\u540c\u7a0b\u5e8f\u533a\u57df\u95f4\u4f20\u9001\u7684\u6570\u636e\u6d41\u3002\u4f8b\u5982\uff0c\u4e92\u8054\u7f51\u662f\u4e0d\u53ef\u4fe1\u4efb\u7684\u533a\u57df\uff0c\u800c\u5185\u90e8\u7f51\u7edc\u662f\u9ad8\u5ea6\u4fe1\u4efb\u7684\u533a\u57df\u3002\u7f51\u7edc\u5b89\u5168\u6a21\u578b\u53ef\u4ee5\u5728\u5b89\u88c5\uff0c\u521d\u6b21\u542f\u52a8\u548c\u9996\u6b21\u5efa\u7acb\u7f51\u7edc\u8fde\u63a5\u65f6\u9009\u62e9\u521d\u59cb\u5316\u3002\u8be5\u6a21\u578b\u63cf\u8ff0\u4e86\u4e3b\u673a\u6240\u8fde\u63a5\u7684\u6574\u4e2a\u7f51\u7edc\u73af\u5883\u7684\u53ef\u4fe1\u7ea7\u522b\uff0c\u5e76\u5b9a\u4e49\u4e86\u65b0\u8fde\u63a5\u7684\u5904\u7406\u65b9\u5f0f\u3002\u6709\u5982\u4e0b\u51e0\u79cd\u4e0d\u540c\u7684\u521d\u59cb\u5316\u533a\u57df\uff1a<\/p>\n<p>\u963b\u585e\u533a\u57df\uff08block\uff09\uff1a\u4efb\u4f55\u4f20\u5165\u7684\u7f51\u7edc\u6570\u636e\u5305\u90fd\u5c06\u88ab\u963b\u6b62\u3002<\/p>\n<p>\u5de5\u4f5c\u533a\u57df\uff08work\uff09\uff1a\u76f8\u4fe1\u7f51\u7edc\u4e0a\u7684\u5176\u4ed6\u8ba1\u7b97\u673a\uff0c\u4e0d\u4f1a\u635f\u5bb3\u4f60\u7684\u8ba1\u7b97\u673a\u3002<\/p>\n<p>\u5bb6\u5ead\u533a\u57df\uff08home\uff09\uff1a\u76f8\u4fe1\u7f51\u7edc\u4e0a\u7684\u5176\u4ed6\u8ba1\u7b97\u673a\uff0c\u4e0d\u4f1a\u635f\u5bb3\u4f60\u7684\u8ba1\u7b97\u673a\u3002<\/p>\n<p>\u516c\u5171\u533a\u57df\uff08public\uff09\uff1a\u4e0d\u76f8\u4fe1\u7f51\u7edc\u4e0a\u7684\u4efb\u4f55\u8ba1\u7b97\u673a\uff0c\u53ea\u6709\u9009\u62e9\u63a5\u53d7\u4f20\u5165\u7684\u7f51\u7edc\u8fde\u63a5\u3002<\/p>\n<p>\u9694\u79bb\u533a\u57df\uff08DMZ\uff09\uff1a\u9694\u79bb\u533a\u57df\u4e5f\u79f0\u4e3a\u975e\u519b\u4e8b\u533a\u57df\uff0c\u5185\u5916\u7f51\u7edc\u4e4b\u95f4\u589e\u52a0\u7684\u4e00\u5c42\u7f51\u7edc\uff0c\u8d77\u5230\u7f13\u51b2\u4f5c\u7528\u3002\u5bf9\u4e8e\u9694\u79bb\u533a\u57df\uff0c\u53ea\u6709\u9009\u62e9\u63a5\u53d7\u4f20\u5165\u7684\u7f51\u7edc\u8fde\u63a5\u3002<\/p>\n<p>\u4fe1\u4efb\u533a\u57df\uff08trusted\uff09\uff1a\u6240\u6709\u7684\u7f51\u7edc\u8fde\u63a5\u90fd\u53ef\u4ee5\u63a5\u53d7\u3002<\/p>\n<p>\u4e22\u5f03\u533a\u57df\uff08drop\uff09\uff1a\u4efb\u4f55\u4f20\u5165\u7684\u7f51\u7edc\u8fde\u63a5\u90fd\u88ab\u62d2\u7edd\u3002<\/p>\n<p>\u5185\u90e8\u533a\u57df\uff08internal\uff09\uff1a\u4fe1\u4efb\u7f51\u7edc\u4e0a\u7684\u5176\u4ed6\u8ba1\u7b97\u673a\uff0c\u4e0d\u4f1a\u635f\u5bb3\u4f60\u7684\u8ba1\u7b97\u673a\u3002\u53ea\u6709\u9009\u62e9\u63a5\u53d7\u4f20\u5165\u7684\u7f51\u7edc\u8fde\u63a5\u3002<\/p>\n<p>\u5916\u90e8\u533a\u57df\uff08external\uff09\uff1a\u4e0d\u76f8\u4fe1\u7f51\u7edc\u4e0a\u7684\u5176\u4ed6\u8ba1\u7b97\u673a\uff0c\u4e0d\u4f1a\u635f\u5bb3\u4f60\u7684\u8ba1\u7b97\u673a\u3002\u53ea\u6709\u9009\u62e9\u63a5\u53d7\u4f20\u5165\u7684\u7f51\u7edc\u8fde\u63a5\u3002<\/p>\n<p>\u6ce8\uff1aFirewallD\u7684\u9ed8\u8ba4\u533a\u57df\u662fpublic\u3002<\/p>\n<p>firewalld\u9ed8\u8ba4\u63d0\u4f9b\u4e86\u4e5d\u4e2azone\u914d\u7f6e\u6587\u4ef6\uff1ablock.xml\u3001dmz.xml\u3001drop.xml\u3001external.xml\u3001 home.xml\u3001internal.xml\u3001public.xml\u3001trusted.xml\u3001work.xml\uff0c\u4ed6\u4eec\u90fd\u4fdd\u5b58\u5728\u201c\/usr\/lib \/firewalld\/zones\/\u201d\u76ee\u5f55\u4e0b\u3002<\/p>\n<p><\/div><\/div>\n<h1>\u4e94\u3001\u9632\u706b\u5899\u89c4\u5219\u6dfb\u52a0<\/h1>\n<div  class='collapse-block shadow-sm collapse-block-transparent collapsed hide-border-left'><div class='collapse-block-title'><span class='collapse-block-title-inner'>iptables\u547d\u4ee4\u6dfb\u52a0<\/span><i class='collapse-icon fa fa-angle-down'><\/i><\/div><div class='collapse-block-body' style='display:none;'><\/p>\n<p>iptables\u547d\u4ee4\u683c\u5f0f\uff1aiptables [-t \u8868\u540d] \u7ba1\u7406\u9009\u9879 [\u94fe\u540d] [\u5339\u914d\u6761\u4ef6] [-j \u63a7\u5236\u7c7b\u578b]<br \/>\n1\u3001\u6ce8\u610f\u4e8b\u9879<br \/>\n\u4e0d\u6307\u5b9a\u8868\u540d\u65f6\uff0c\u9ed8\u8ba4\u6307filter\u8868<br \/>\n\u4e0d\u6307\u5b9a\u94fe\u540d\u65f6\uff0c\u9ed8\u8ba4\u6307\u8868\u5185\u7684\u6240\u6709\u94fe<br \/>\n\u9664\u975e\u8bbe\u7f6e\u94fe\u7684\u9ed8\u8ba4\u7b56\u7565\uff0c\u5426\u5219\u5fc5\u987b\u6307\u5b9a\u5339\u914d\u6761\u4ef6<br \/>\n\u9009\u9879\u3001\u94fe\u540d\u3001\u63a7\u5236\u7c7b\u578b\u4f7f\u7528\u5927\u5199\u5b57\u6bcd\uff0c\u5176\u4f59\u5747\u4e3a\u5c0f\u5199<br \/>\n<div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2024\/03\/image-1710751997804.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2024\/03\/image-1710751997804.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"file\" \/><\/div><\/p>\n<p>2\u3001\u5e38\u7528\u7684\u7ba1\u7406\u9009\u9879<br \/>\n<div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2024\/03\/image-1710751967632.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2024\/03\/image-1710751967632.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"file\" \/><\/div><\/p>\n<p>3\u3001\u5e38\u7528\u7684\u63a7\u5236\u7c7b\u578b<br \/>\n<div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2024\/03\/image-1710752049088.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2024\/03\/image-1710752049088.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"file\" \/><\/div><\/p>\n<p>\u793a\u4f8b<\/p>\n<pre><code># \u5728\u673a\u5668192.168.71.207\u4e0a\u8bbe\u7f6e\u9632\u706b\u5899\u89c4\u5219\uff0c\u653e\u884c\u67d0\u4e2aip\u8bbf\u95ee22\u7aef\u53e3\r\n\u5148\u6e05\u7a7a\u4e4b\u524d\u6240\u6709\uff0c\u6392\u9664\u5e72\u6270\r\niptables -t raw -F\r\niptables -t mangle -F\r\niptables -t nat -F\r\niptables -t filter -F\r\n\r\n# 1\u3001\u5148\u628aINPUT\u6574\u4f53\u7981\u7528\r\niptables -t filter -P INPUT DROP  # \u4e0d\u6307\u5b9a-t\uff0c\u9ed8\u8ba4\u5c31\u662ffilter\u8868\r\n# iptables -t filter -P INPUT ACCEPT  # \u91cd\u65b0\u653e\u5f00\r\n\r\n# 2\u3001\u7136\u540e\u518d\u5355\u72ec\u653e\u884c\r\niptables -t filter -A INPUT -p tcp --source 192.168.71.18 --dport 22 -j ACCEPT\r\niptables -t filter -A INPUT -p tcp --source 192.168.71.206 --dport 22 -j ACCEPT\r\n# 3\u3001\u67e5\u770b\r\niptables -t filter -L -n  # -L-n\u53ef\u4ee5\u7b80\u5199\u4e3a-nL\uff0c\u4f46\u6ce8\u610f-n\u5fc5\u987b\u5728\u524d\u9762\r\n\r\n# 4\u3001\u7136\u540e\u4f60\u53ef\u4ee5\u5728 192.168.71.206\u673a\u5668\u4e0a\u6d4b\u8bd5\uff0c\u53d1\u73b0ping\u4e0d\u540c\u76ee\u6807\u4e3b\u673a\uff0c\u4f46\u662f\u53ef\u4ee5ssh\u767b\u5f55\r\nssh root@192.168.71.207 # \u4f1a\u6162\u4e00\u4e9b\uff0c\u4f46\u662f\u7b49\u7b49\uff0c\u53ef\u4ee5\u94fe\u4e0a\u3002\u4ece\u4fa7\u9762\u53ef\u4ee5\u53cd\u9988\u51fa\u4f7f\u7528iptables\u4f1a\u5e26\u6765\u7684\u4e00\u4e9b\u95ee\u9898\r\n\r\n# 5\u3001\u6e05\u7a7a\u8868\u4e2d\u6240\u6709\u89c4\u5219\r\niptables -t filter -F\r\n\r\n# 6\u3001\u5220\u9664\u67d0\u4e00\u6761\r\niptables -t filter -nL --line-numbers # \u5148\u67e5\u770b\u5230\u89c4\u5219\u53f7\r\niptables -t filter -D INPUT 2<\/code><\/pre>\n<p><span style=\"background-color: #ff0000;\">\u547d\u4ee4iptables\u4e0efirewall-cmd\u672c\u8d28\u90fd\u662f\u5728\u64cd\u4f5c\u5185\u6838\u7684netfilter\uff0c\u6240\u4ee5firewall-cmd\u6dfb\u52a0\u7684\u4e1c\u897fiptables\u4e5f\u80fd\u770b\u5230<\/span><\/p>\n<p><\/div><\/div>\n<div  class='collapse-block shadow-sm collapse-block-transparent collapsed hide-border-left'><div class='collapse-block-title'><span class='collapse-block-title-inner'>firewall-cmd\u547d\u4ee4\u6dfb\u52a0<\/span><i class='collapse-icon fa fa-angle-down'><\/i><\/div><div class='collapse-block-body' style='display:none;'><\/p>\n<p>\u4e00\u6761iptables\u547d\u4ee4\uff1aiptables -t filter -A INPUT -p tcp &#8211;source 192.168.71.188 &#8211;dport 22 -j ACCEPT<br \/>\n\u6211\u4eec\u6362\u6210fireall-cmd\u683c\u5f0f\u5982\u4e0b\uff0c\u6267\u884c\u540e\uff0c\u518d\u7528iptables\u67e5\u770b\u4e00\u4e0b\u53d1\u73b0\u662f\u53ef\u4ee5\u770b\u5230\u7684<\/p>\n<pre><code>firewall-cmd --list-all\r\nfirewall-cmd --permanent --add-rich-rule='rule family=\"ipv4\" source address=\"192.168.71.18\" port port=\"22\" protocol=\"tcp\" accept'\r\n\u53c2\u6570--permanent\u662f\u4e3a\u4e86\u4f7f\u5f97\u8fd9\u6761\u89c4\u5219\u6c38\u4e45\u751f\u6548\uff0c\u5982\u679c\u6ca1\u6709\u8fd9\u4e2a\u53c2\u6570\uff0c\u90a3\u4e48\u5f53\u7cfb\u7edf\u91cd\u542f\u540e\uff0c\u6dfb\u52a0\u7684\u8fd9\u6761\u89c4\u5219\u5c31\u4f1a\u6d88\u5931\u3002\r\n\u4e3a\u4e86\u8ba9\u65b0\u7684\u89c4\u5219\u5e94\u7528\u5230\u5b9e\u9645\u7684\u7f51\u7edc\u6d41\u91cf\u4e2d\uff0c\u8fd8\u9700\u8981\u989d\u5916\u6267\u884c\u4e00\u6761\u547d\u4ee4\u5bf9\u9632\u706b\u5899\u914d\u7f6e\u8fdb\u884c\u91cd\u65b0\u52a0\u8f7d\uff1a\r\nfirewall-cmd --reload\r\n\u8fd9\u4e2a\u547d\u4ee4\u4f1a\u4f7f\u4fee\u6539\u540e\u7684\u9632\u706b\u5899\u89c4\u5219\u7acb\u5373\u751f\u6548\u3002<\/code><\/pre>\n<p>firewall-cmd &#8211;list-all<br \/>\n<div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2024\/03\/image-1710756238246.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2024\/03\/image-1710756238246.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"file\" \/><\/div><\/p>\n<p>\u5220\u9664\u89c4\u5219<\/p>\n<pre>[root@localhost ~]# firewall-cmd --list-all\r\n\r\n\u3002\u3002\u3002\r\n  \u00a0 \u00a0 rule family=\"ipv4\" source address=\"192.168.71.18\" port port=\"22\" protocol=\"tcp\" accept\r\n\r\n# \u5220\u9664\u65f6\uff0c\u628a\u4e0a\u9762\u770b\u5230\u7684\u89c4\u5219\u8d34\u5230--remove-rich-rule\u7684\u5f15\u53f7\u91cc\u5c31\u884c\uff0c\u5e76\u4e14\u8bb0\u4f4f\u8981--reload\u624d\u80fd\u751f\u6548\r\n\r\n[root@localhost ~]# firewall-cmd --permanent --remove-rich-rule='rule family=\"ipv4\" source address=\"192.168.71.18\" port port=\"22\" protocol=\"tcp\" accept'\r\n\r\n[root@localhost ~]# firewall-cmd --reload<\/pre>\n<p>iptables -t filter -nL\u4e5f\u53ef\u4ee5\u770b\u5230\uff08\u5728centos7\u4e2d\u8fd8\u53ef\u4ee5\u770b\u5230\uff0c\u5728centos9\u4e2d\u5c31\u770b\u4e0d\u5230\u4e86\uff0c\u5e76\u4e14centos9\u4f1a\u660e\u786e\u544a\u8bc9\u4f60\u7528iptables\u64cd\u4f5c\u9632\u706b\u5899\u89c4\u5219\u9a6c\u4e0a\u5c31\u4e0d\u518d\u652f\u6301\u4e86\uff09<\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2024\/03\/image-1710756310643.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2024\/03\/image-1710756310643.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"file\" \/><\/div><\/p>\n<p>\u66f4\u591a\u5185\u5bb9\u53c2\u8003\uff1a<\/p>\n<p>iptables\u547d\u4ee4\uff1a<a href=\"https:\/\/www.cnblogs.com\/linhaifeng\/p\/15979888.html\">https:\/\/www.cnblogs.com\/linhaifeng\/p\/15979888.html<\/a><br \/>\nfirewall-cmd: <a href=\"https:\/\/cloud.tencent.com\/developer\/article\/1529105\">https:\/\/cloud.tencent.com\/developer\/article\/1529105<\/a><\/p>\n<p><\/div><\/div>\n<h1>\u516d \u4e00\u4e2a\u6709\u610f\u601d\u7684\u6848\u4f8b<\/h1>\n<div  class='collapse-block shadow-sm collapse-block-transparent collapsed hide-border-left'><div class='collapse-block-title'><span class='collapse-block-title-inner'>\u5b9e\u9645\u6848\u4f8b<\/span><i class='collapse-icon fa fa-angle-down'><\/i><\/div><div class='collapse-block-body' style='display:none;'><\/p>\n<p>egon\u5728\u767e\u5ea6\u65f6\u66fe\u9047\u5230\u8fc7\u8fd9\u4e48\u4e00\u4e2a\u573a\u666f<br \/>\n\u80cc\u666f\uff1a\u67d0\u53f0\u670d\u52a1\u5668\u4e0a\u90e8\u7f72\u4e86\u5bf9\u5916\u516c\u5f00\u7684\u4e1a\u52a1<br \/>\n\u95ee\u9898\uff1a\u4e1a\u52a1\u7684\u8bbf\u95ee\u901f\u5ea6\uff0c\u8d8a\u6765\u8d8a\u6162\uff0c\u6162\u5230\u4e00\u4e2a\u63a5\u53e3\u7684\u8bf7\u6c42\u90fd\u9700\u8981\u82b1\u8d392-5s\u4e0d\u7b49<br \/>\n\u9996\u6b21\u89e3\u51b3\uff1a<br \/>\n1\u3001\u67e5\u770b\u7cfb\u7edf\u72b6\u6001\u3001\u8d1f\u8f7d\u3001cpu\u3001\u5185\u5b58\u90fd\u6ca1\u6709\u660e\u663e\u7684\u6ce2\u52a8\uff0c\u5185\u5b58\u7528\u4e8660%-70%\u5176\u5b9e\u4e5f\u8fd8\u53ef\u4ee5<br \/>\n\u4f46\u6ca1\u7ba1\u4e09\u4e03\u4e8c\u5341\u4e00\uff0c\u76f4\u63a5\u5148\u52a0\u4e86\u4e00\u6ce2\u786c\u4ef6\u8d44\u6e90\uff0c<br \/>\n\u53d1\u73b0\uff0c\u771f\u7684\u5c41\u7528\u6ca1\u7528\uff0c\u597d\u5728\u6ca1\u4eba\u53d1\u73b0\u6211\u8fd9\u4e48\u8822\u7684\u52a8\u4f5c<\/p>\n<p>\u4e8c\u6b21\u89e3\u51b3\uff1a<br \/>\n\u73b0\u5728\u5f00\u59cb\u6c89\u4e0b\u5fc3\u6765\u8ba4\u771f\u601d\u8003\u4e00\u4e0b\u4e86\uff0c\u51e1\u662f\u5e94\u8be5\u52a8\u8111\u5b50\uff0c\u800c\u4e0d\u662f\u95ed\u7740\u773c\u8bd5<\/p>\n<pre><code>\u4e0d\u8fc7\u8bd5\u8bd5\u4e5f\u6709\u597d\u5904\u5bf9\u5427\u54c8\u54c8\u54c8\u54c8\uff0c\u81f3\u5c11\u5148\u786e\u4fe1\u662f\u8ddf\u786c\u4ef6\u8d44\u6e90\u6ca1\u5173\u7cfb\u4e86\u54c8\u54c8\u54c8\r\n\u786c\u4ef6\u8d44\u6e90\u591f\u7528\u7684\uff0c\u90a3\u4e48\u95ee\u9898\u5fc5\u7136\u662f\u51fa\u5728\u8f6f\u4ef6\u5c42\u9762\r\n\u5f00\u59cb\u6574\u4f53\u6027\u5206\u6790\u8fd9\u53f0\u673a\u5668\u4e0a\u90fd\u505a\u8fc7\u4ec0\u4e48\r\n1\u3001\u5e94\u7528\u8f6f\u4ef6\u95ee\u9898\u7684\u6392\u9664\r\n    \u5c1d\u8bd5\u8fc7\uff0c\u6dfb\u52a0\u7f13\u5b58\u8ba9\u9759\u6001\u6587\u4ef6\u7f13\u5b58\u5230\u7528\u6237\u672c\u5730\u3001\u52a0cdn\uff0c\u90fd\u6ca1\u5565\u5375\u7528\uff0c\u4e00\u6837\u7684\u6162\r\n2\u3001\u64cd\u4f5c\u7cfb\u7edf\u5185\u6838\r\n\u8fd9\u53f0\u673a\u5668\u4e3a\u4e86\u4e3a\u4e86\u9632\u6b62\u4e00\u4e9b\u722c\u866b\u3001dos\u653b\u51fb\u3001\u63a5\u53e3\u7834\u89e3\u7b49\u95ee\u9898\uff0c\u8bbe\u7f6e\u4e86\u591a\u5c42\u9632\u62a4\uff0c\r\n\u5176\u4e2d\u5728\u7cfb\u7edf\u5c42\u9762\u5c31\u7528\u5230\u4e86 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