{"id":53,"date":"2022-11-30T13:46:42","date_gmt":"2023-04-12T00:38:21","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/index.php\/2023\/11\/30\/%e5%a6%82%e4%bd%95%e5%9c%a8linux%e4%b8%8a%e6%89%93%e5%bc%80%e4%b8%80%e4%b8%aa%e7%ab%af%e5%8f%a3\/"},"modified":"2025-07-31T22:07:17","modified_gmt":"2025-07-31T14:07:17","slug":"%e5%a6%82%e4%bd%95%e5%9c%a8linux%e4%b8%8a%e6%89%93%e5%bc%80%e4%b8%80%e4%b8%aa%e7%ab%af%e5%8f%a3","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%a6%82%e4%bd%95%e5%9c%a8linux%e4%b8%8a%e6%89%93%e5%bc%80%e4%b8%80%e4%b8%aa%e7%ab%af%e5%8f%a3\/","title":{"rendered":"Linux\u7cfb\u7edf\uff1a\u5982\u4f55\u5b89\u5168\u9ad8\u6548\u5730\u5f00\u653e\u7aef\u53e3\uff08\u9632\u706b\u5899\u914d\u7f6e\u8be6\u89e3\uff09"},"content":{"rendered":"<h3>\u7b80\u4ecb<\/h3>\n<p>\u7aef\u53e3\u662f\u901a\u4fe1\u7684\u7aef\u70b9\u3002\u5728\u64cd\u4f5c\u7cfb\u7edf\u4e2d\uff0c\u7aef\u53e3\u53ef\u4ee5\u5bf9\u7279\u5b9a\u8fdb\u7a0b\u6216\u7f51\u7edc\u670d\u52a1\u7684\u6570\u636e\u5305\u8fdb\u884c\u5f00\u653e\u6216\u5173\u95ed\u3002<\/p>\n<p>\u901a\u5e38\uff0c\u7aef\u53e3\u7528\u4e8e\u8bc6\u522b\u7279\u5b9a\u7684\u7f51\u7edc\u670d\u52a1\u3002\u867d\u7136\u53ef\u4ee5\u901a\u8fc7\u624b\u52a8\u914d\u7f6e\u670d\u52a1\u6765\u4f7f\u7528\u4e0d\u540c\u7684\u7aef\u53e3\uff0c\u4f46\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u4f1a\u4f7f\u7528\u9ed8\u8ba4\u8bbe\u7f6e\u3002<\/p>\n<p>\u6700\u521d\u76841024\u4e2a\u7aef\u53e3\uff08\u7aef\u53e3\u53f7\u4ece0\u52301023\uff09\u88ab\u79f0\u4e3a\u201c\u4f17\u6240\u5468\u77e5\u7aef\u53e3\u53f7\u201d\uff0c\u5b83\u4eec\u88ab\u4fdd\u7559\u7528\u4e8e\u6700\u5e38\u7528\u7684\u670d\u52a1\uff0c\u4f8b\u5982SSH\uff08\u7aef\u53e322\uff09\u3001HTTP\uff08\u7aef\u53e380\uff09\u548cHTTPS\uff08\u7aef\u53e3443\uff09\u3002<\/p>\n<p>\u8d85\u8fc71024\u7684\u7aef\u53e3\u53f7\u88ab\u79f0\u4e3a\u201c\u4e34\u65f6\u7aef\u53e3\u201d\u3002<\/p>\n<ul class=\"post-ul\">\n<li>\u7aef\u53e3\u53f71024\u523049151\u88ab\u79f0\u4e3a\u201c\u6ce8\u518c\/\u7528\u6237\u7aef\u53e3\u201d\u3002<\/li>\n<li>\u7aef\u53e3\u53f749152\u523065535\u88ab\u79f0\u4e3a\u201c\u52a8\u6001\/\u79c1\u6709\u7aef\u53e3\u201d\u3002<\/li>\n<\/ul>\n<p>\u5728\u672c\u6559\u7a0b\u4e2d\uff0c\u60a8\u5c06\u5728Linux\u4e0a\u6253\u5f00\u4e00\u4e2a\u4e34\u65f6\u7aef\u53e3\uff0c\u56e0\u4e3a\u6700\u5e38\u89c1\u7684\u670d\u52a1\u4f7f\u7528\u4f17\u6240\u5468\u77e5\u7684\u7aef\u53e3\u3002<\/p>\n<div class=\"post-conf-info\">\n<p class=\"post-conf-desc\"><strong>\u4fe1\u606f\uff1a<\/strong><\/p>\n<div>\u4f7f\u7528Silicon Cloud\u5e94\u7528\u5e73\u53f0\u4eceGitHub\u90e8\u7f72\u60a8\u7684\u5e94\u7528\u7a0b\u5e8f\uff0c\u8ba9Silicon Cloud\u4e13\u6ce8\u4e8e\u6269\u5c55\u60a8\u7684\u5e94\u7528\u3002<\/div>\n<\/div>\n<h2>\u5148\u51b3\u6761\u4ef6<\/h2>\n<p>\u5b8c\u6210\u672c\u6559\u7a0b\uff0c\u60a8\u9700\u8981\u51c6\u5907\u4ee5\u4e0b\u5de5\u5177\uff1a<\/p>\n<ul class=\"post-ul\">\n<li>\u719f\u6089\u7ec8\u7aef\u7684\u4f7f\u7528\u3002<\/li>\n<\/ul>\n<h2>\u5217\u51fa\u6240\u6709\u5f00\u653e\u7aef\u53e3<\/h2>\n<p>\u5728Linux\u4e0a\u6253\u5f00\u4e00\u4e2a\u7aef\u53e3\u4e4b\u524d\uff0c\u60a8\u5fc5\u987b\u68c0\u67e5\u6240\u6709\u5df2\u6253\u5f00\u7684\u7aef\u53e3\u5217\u8868\uff0c\u5e76\u9009\u62e9\u4e00\u4e2a\u4e0d\u5728\u8be5\u5217\u8868\u4e2d\u7684\u4e34\u65f6\u7aef\u53e3\u6765\u6253\u5f00\u3002<\/p>\n<p>\u4f7f\u7528<code>netstat<\/code>\u547d\u4ee4\u5217\u51fa\u6240\u6709\u6253\u5f00\u7684\u7aef\u53e3\uff0c\u5305\u62ecTCP\u548cUDP\uff0c\u5b83\u4eec\u662f\u7f51\u7edc\u5c42\u4e2d\u7528\u4e8e\u6570\u636e\u5305\u4f20\u8f93\u7684\u6700\u5e38\u89c1\u534f\u8bae\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">netstat<\/span> <span class=\"token parameter variable\">-lntu<\/span><\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u8fd9\u5c06\u6253\u5370\u51fa\uff1a<\/p>\n<ul class=\"post-ul\">\n<li>\u6240\u6709\u76d1\u542c\u5957\u63a5\u5b57 (<code>-l<\/code>)<\/li>\n<li>\u7aef\u53e3\u53f7 (<code>-n<\/code>)<\/li>\n<li>TCP\u7aef\u53e3 (<code>-t<\/code>)<\/li>\n<li>UDP\u7aef\u53e3 (<code>-u<\/code>)<\/li>\n<\/ul>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">\u8f93\u51fa<\/div>\n<pre class=\"post-pre\"><code>Active Internet connections (only servers)\r\nProto Recv-Q Send-Q Local Address           Foreign Address         State\r\ntcp        0      0 127.0.0.1:5432          0.0.0.0:*               LISTEN\r\ntcp        0      0 127.0.0.1:27017         0.0.0.0:*               LISTEN\r\ntcp        0      0 127.0.0.1:6379          0.0.0.0:*               LISTEN\r\ntcp        0      0 127.0.0.53:53           0.0.0.0:*               LISTEN\r\ntcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN\r\ntcp6       0      0 ::1:5432                :::*                    LISTEN\r\ntcp6       0      0 ::1:6379                :::*                    LISTEN\r\ntcp6       0      0 :::22                   :::*                    LISTEN\r\nudp        0      0 127.0.0.53:53           0.0.0.0:*               LISTEN<\/code><\/pre>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"post-conf-note\">\n<p class=\"post-conf-desc\"><strong>\u6ce8\u610f\uff1a<\/strong><\/p>\n<div>\u5982\u679c\u60a8\u7684\u53d1\u884c\u7248\u6ca1\u6709<code>netstat<\/code>\u547d\u4ee4\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528<code>ss<\/code>\u547d\u4ee4\u6765\u68c0\u67e5\u76d1\u542c\u5957\u63a5\u5b57\uff0c\u663e\u793a\u5f00\u653e\u7aef\u53e3\u3002\u4f7f\u7528<code>ss<\/code>\u547d\u4ee4\u5217\u51fa\u5177\u6709\u5f00\u653e\u7aef\u53e3\u7684\u76d1\u542c\u5957\u63a5\u5b57\uff0c\u4ee5\u9a8c\u8bc1\u60a8\u662f\u5426\u6b63\u5728\u63a5\u6536\u4e00\u81f4\u7684\u8f93\u51fa\u3002<\/div>\n<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\">ss <span class=\"token parameter variable\">-lntu<\/span><\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u8fd9\u5c06\u6253\u5370\u51fa\uff1a<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">\u8f93\u51fa<\/div>\n<pre class=\"post-pre\"><code>Netid  State      Recv-Q Send-Q Local Address:Port               Peer Address:Port\r\nudp    UNCONN     0      0      127.0.0.53%lo:53                 0.0.0.0:*\r\ntcp    LISTEN     0      128    127.0.0.1:5432                   0.0.0.0:*\r\ntcp    LISTEN     0      128    127.0.0.1:27017                  0.0.0.0:*\r\ntcp    LISTEN     0      128    127.0.0.1:6379                   0.0.0.0:*\r\ntcp    LISTEN     0      128    127.0.0.53%lo:53                 0.0.0.0:*\r\ntcp    LISTEN     0      128    0.0.0.0:22                       0.0.0.0:*\r\ntcp    LISTEN     0      128    [::1]:5432                       0.0.0.0:*\r\ntcp    LISTEN     0      128    [::1]:6379                       0.0.0.0:*\r\ntcp    LISTEN     0      128    [::]:22                          0.0.0.0:*<\/code><\/pre>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u8fd9\u51e0\u4e4e\u63d0\u4f9b\u4e86\u4e0e<code>netstat<\/code>\u76f8\u540c\u7684\u5f00\u653e\u7aef\u53e3\u4fe1\u606f\u3002<\/p>\n<h2>\u5728Linux\u4e0a\u6253\u5f00\u4e00\u4e2a\u7aef\u53e3\u4ee5\u5141\u8bb8TCP\u8fde\u63a5<\/h2>\n<p>\u73b0\u5728\uff0c\u6253\u5f00\u4e00\u4e2a\u5173\u95ed\u7684\u7aef\u53e3\uff0c\u5e76\u4f7f\u5176\u76d1\u542cTCP\u8fde\u63a5\u3002<\/p>\n<p>\u4e3a\u4e86\u672c\u6559\u7a0b\u7684\u76ee\u7684\uff0c\u60a8\u5c06\u6253\u5f004000\u7aef\u53e3\u3002\u7136\u800c\uff0c\u5982\u679c\u8be5\u7aef\u53e3\u5728\u60a8\u7684\u7cfb\u7edf\u4e2d\u5df2\u88ab\u5360\u7528\uff0c\u53ef\u4ee5\u9009\u62e9\u53e6\u4e00\u4e2a\u672a\u88ab\u5360\u7528\u7684\u7aef\u53e3\u3002\u53ea\u9700\u786e\u4fdd\u5176\u6570\u503c\u5927\u4e8e1023\u5373\u53ef\u3002<\/p>\n<p>\u4f7f\u7528<code>netstat<\/code>\u547d\u4ee4\u786e\u4fdd\u7aef\u53e34000\u672a\u88ab\u4f7f\u7528\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">netstat<\/span> <span class=\"token parameter variable\">-na<\/span> <span class=\"token operator\">|<\/span> <span class=\"token function\">grep<\/span> <mark>:4000<\/mark><\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u6216\u8005\u662f<code>ss<\/code>\u547d\u4ee4\uff1a<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\">ss <span class=\"token parameter variable\">-na<\/span> <span class=\"token operator\">|<\/span> <span class=\"token function\">grep<\/span> <mark>:4000<\/mark><\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u8f93\u51fa\u5fc5\u987b\u4fdd\u6301\u7a7a\u767d\uff0c\u4ee5\u8bc1\u660e\u5f53\u524d\u672a\u88ab\u4f7f\u7528\uff0c\u8fd9\u6837\u60a8\u5c31\u53ef\u4ee5\u624b\u52a8\u5c06\u7aef\u53e3\u89c4\u5219\u6dfb\u52a0\u5230\u7cfb\u7edf\u7684<code>iptables<\/code>\u9632\u706b\u5899\u4e2d\u3002<\/p>\n<h3>\u5bf9\u4e8eUbuntu\u7528\u6237\u548c\u57fa\u4e8eufw\u7684\u7cfb\u7edf<\/h3>\n<p>\u4f7f\u7528<code>ufw<\/code>\uff0c\u5b83\u662fUncomplicated Firewall\u7684\u547d\u4ee4\u884c\u5ba2\u6237\u7aef\u3002<\/p>\n<p>\u60a8\u7684\u6307\u4ee4\u5c06\u4f1a\u7c7b\u4f3c\uff1a<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">sudo<\/span> ufw allow <mark><span class=\"token number\">4000<\/span><\/mark><\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u8bf7\u67e5\u9605\u60a8\u6240\u4f7f\u7528\u7684\u7cfb\u7edf\u53d1\u884c\u7248\u7684\u300a\u5982\u4f55\u8bbe\u7f6e ufw \u9632\u706b\u5899\u8bbe\u7f6e\u300b\u3002<\/p>\n<div class=\"post-conf-note\">\n<p class=\"post-conf-desc\"><strong>\u6ce8\u610f\uff1a<\/strong><\/p>\n<div>\n<p>Ubuntu 14.0.4\uff1a\u201c\u5141\u8bb8\u7279\u5b9a\u7aef\u53e3\u8303\u56f4\u201d<\/p>\n<p>Ubuntu 16.0.4\/18.0.4\/20.0.4\/22.0.4\uff1a\u201c\u5141\u8bb8\u5176\u4ed6\u8fde\u63a5\/\u7279\u5b9a\u7aef\u53e3\u8303\u56f4\u201d<\/p>\n<p>Debian 9\/10\/11\uff1a\u201c\u5141\u8bb8\u5176\u4ed6\u8fde\u63a5\/\u7279\u5b9a\u7aef\u53e3\u8303\u56f4\u201d<\/p>\n<\/div>\n<\/div>\n<h3>\u5bf9\u4e8e\u57fa\u4e8eCentOS\u548cfirewalld\u7684\u7cfb\u7edf<\/h3>\n<p>\u4f7f\u7528<code>firewall-cmd<\/code>\u547d\u4ee4\u884c\u5ba2\u6237\u7aef\u63a7\u5236<code>firewalld<\/code>\u670d\u52a1\u3002<\/p>\n<p>\u60a8\u7684\u547d\u4ee4\u5c06\u7c7b\u4f3c\u4e8e\uff1a<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\">firewall-cmd &#8211;add-port<span class=\"token operator\">=<\/span><mark><span class=\"token number\">4000<\/span><\/mark>\/tcp<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u8bf7\u53c2\u8003\u60a8\u7684\u53d1\u884c\u7248\u672c\u7684\u9632\u706b\u5899\u8bbe\u7f6e\u6307\u5357\u3002<\/p>\n<div class=\"post-conf-note\">\n<p class=\"post-conf-desc\"><strong>\u6ce8\u610f\uff1a<\/strong><\/p>\n<div>\n<p>CentOS 7\/8\uff1a\u201c\u4e3a\u60a8\u7684\u5e94\u7528\u7a0b\u5e8f\u8bbe\u7f6e\u89c4\u5219\/\u4e3a\u60a8\u7684\u533a\u57df\u6253\u5f00\u7aef\u53e3\u201d<\/p>\n<p>Rocky Linux 8\/9\uff1a\u201c\u4e3a\u60a8\u7684\u5e94\u7528\u7a0b\u5e8f\u8bbe\u7f6e\u89c4\u5219\/\u4e3a\u60a8\u7684\u533a\u57df\u6253\u5f00\u7aef\u53e3\u201d<\/p>\n<\/div>\n<\/div>\n<h3>\u5bf9\u4e8e\u5176\u4ed6Linux\u53d1\u884c\u7248<\/h3>\n<p>\u4f7f\u7528iptables\u6765\u66f4\u6539\u7cfb\u7edf\u7684IPv4\u6570\u636e\u5305\u8fc7\u6ee4\u89c4\u5219\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\">iptables <span class=\"token parameter variable\">-A<\/span> INPUT <span class=\"token parameter variable\">-p<\/span> tcp <span class=\"token parameter variable\">&#8211;dport<\/span> <mark><span class=\"token number\">4000<\/span><\/mark> <span class=\"token parameter variable\">-j<\/span> ACCEPT<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u8bf7\u53c2\u8003\u9002\u7528\u4e8e\u60a8\u6240\u4f7f\u7528\u7684\u53d1\u884c\u7248\u7684\u300a\u5982\u4f55\u4f7f\u7528iptables\u8bbe\u7f6e\u9632\u706b\u5899\u300b\u3002<\/p>\n<div class=\"post-conf-note\">\n<p class=\"post-conf-desc\">\u6ce8\u610f\uff1a<\/p>\n<div>\nUbuntu 12.04\uff1a\u300c\u4e00\u79cd\u57fa\u672c\u7684\u9632\u706b\u5899\u300d<br \/>\nUbuntu 14.04\uff1a\u300c\u63a5\u53d7\u5176\u4ed6\u5fc5\u8981\u7684\u8fde\u63a5\u300d<\/div>\n<\/div>\n<h2>\u6d4b\u8bd5\u65b0\u6253\u5f00\u7684\u7aef\u53e3\u662f\u5426\u80fd\u8fdb\u884cTCP\u8fde\u63a5\u3002<\/h2>\n<p>\u73b0\u5728\u4f60\u6210\u529f\u6253\u5f00\u4e86\u4e00\u4e2a\u65b0\u7684TCP\u7aef\u53e3\uff0c\u662f\u65f6\u5019\u5bf9\u5176\u8fdb\u884c\u6d4b\u8bd5\u4e86\u3002<\/p>\n<p>\u9996\u5148\uff0c\u5728\u7aef\u53e3\uff08-p\uff094000\u4e0a\u542f\u52a8netcat\uff08nc\uff09\u5e76\u76d1\u542c\uff08-l\uff09\uff0c\u540c\u65f6\u5c06ls\u7684\u8f93\u51fa\u53d1\u9001\u7ed9\u4efb\u4f55\u5df2\u8fde\u63a5\u7684\u5ba2\u6237\u7aef\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">ls<\/span> <span class=\"token operator\">|<\/span> <span class=\"token function\">nc<\/span> <span class=\"token parameter variable\">-l<\/span> <span class=\"token parameter variable\">-p<\/span> <mark><span class=\"token number\">4000<\/span><\/mark><\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u73b0\u5728\uff0c\u5f53\u5ba2\u6237\u7aef\u57284000\u7aef\u53e3\u4e0a\u6253\u5f00\u4e86TCP\u8fde\u63a5\u540e\uff0c\u4ed6\u4eec\u5c06\u6536\u5230ls\u547d\u4ee4\u7684\u8f93\u51fa\u3002\u73b0\u5728\u6682\u4e0d\u8981\u5173\u95ed\u6b64\u4f1a\u8bdd\u3002<\/p>\n<p>\u5728\u540c\u4e00\u53f0\u673a\u5668\u4e0a\u6253\u5f00\u53e6\u4e00\u4e2a\u7ec8\u7aef\u4f1a\u8bdd\u3002<\/p>\n<p>\u7531\u4e8e\u60a8\u5f00\u653e\u4e86\u4e00\u4e2aTCP\u7aef\u53e3\uff0c\u8bf7\u4f7f\u7528telnet\u68c0\u67e5TCP\u8fde\u63a5\u6027\u3002\u5982\u679c\u8be5\u547d\u4ee4\u4e0d\u5b58\u5728\uff0c\u8bf7\u4f7f\u7528\u60a8\u7684\u8f6f\u4ef6\u5305\u7ba1\u7406\u5668\u8fdb\u884c\u5b89\u88c5\u3002<\/p>\n<p>\u8f93\u5165\u670d\u52a1\u5668\u7684IP\u5730\u5740\u548c\u7aef\u53e3\u53f7\uff08\u4ee5\u672c\u4f8b\u4e2d\u76844000\u4e3a\u4f8b\uff09\uff0c\u7136\u540e\u8fd0\u884c\u6b64\u547d\u4ee4\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\">telnet <mark>localhost<\/mark> <mark><span class=\"token number\">4000<\/span><\/mark><\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u8fd9\u4e2a\u6307\u4ee4\u5c1d\u8bd5\u5728\u672c\u5730\u4e3b\u673a\u76844000\u7aef\u53e3\u4e0a\u6253\u5f00\u4e00\u4e2aTCP\u8fde\u63a5\u3002<\/p>\n<p>\u4f60\u5c06\u4f1a\u5f97\u5230\u7c7b\u4f3c\u4e8e\u8fd9\u6837\u7684\u8f93\u51fa\uff0c\u8868\u660e\u5df2\u4e0e\u76d1\u542c\u7a0b\u5e8f\uff08nc\uff09\u5efa\u7acb\u4e86\u8fde\u63a5\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">\u8f93\u51fa<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>Trying ::1&#8230; Trying 127.0.0.1&#8230; Connected to localhost. Escape character is &#8216;^]&#8217;. while.sh<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<\/div>\n<p>ls\u7684\u8f93\u51fa\uff08\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\u662fwhile.sh\uff09\u4e5f\u5df2\u88ab\u53d1\u9001\u7ed9\u5ba2\u6237\u7aef\uff0c\u8868\u660eTCP\u8fde\u63a5\u6210\u529f\u3002<\/p>\n<p>\u5728\u4e2d\u56fd\uff0c\u4f7f\u7528nmap\u6765\u68c0\u67e5\u7aef\u53e3\u662f\u5426\u5f00\u653e\uff1a<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\">nmap <mark>localhost<\/mark> <span class=\"token parameter variable\">-p<\/span> <mark><span class=\"token number\">4000<\/span><\/mark><\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u8fd9\u4e2a\u547d\u4ee4\u4f1a\u68c0\u67e5\u5f00\u653e\u7684\u7aef\u53e3\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">\u8f93\u51fa<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>Starting Nmap 7.60 ( https:\/\/nmap.org ) at 2020-01-18 21:51 UTC Nmap scan report for localhost (127.0.0.1) Host is up (0.00010s latency). Other addresses for localhost (not scanned): ::1 PORT STATE SERVICE 4000\/tcp open remoteanything Nmap done: 1 IP address (1 host up) scanned in 0.25 seconds<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<\/div>\n<p>\u7aef\u53e3\u5df2\u7ecf\u6253\u5f00\u3002\u60a8\u5df2\u6210\u529f\u5728\u60a8\u7684Linux\u7cfb\u7edf\u4e0a\u6253\u5f00\u4e86\u4e00\u4e2a\u65b0\u7684\u7aef\u53e3\u3002<\/p>\n<div class=\"post-conf-note\">\n<p class=\"post-conf-desc\">\u6ce8\u610f\uff1a<\/p>\n<div>nmap\u53ea\u5217\u51fa\u5f53\u524d\u6b63\u5728\u4fa6\u542c\u7684\u5e94\u7528\u7a0b\u5e8f\u7684\u5df2\u6253\u5f00\u7aef\u53e3\u3002\u5982\u679c\u60a8\u4e0d\u4f7f\u7528\u4efb\u4f55\u4fa6\u542c\u5e94\u7528\u7a0b\u5e8f\uff08\u4f8b\u5982netcat\uff09\uff0c\u8fd9\u5c06\u663e\u793a\u7aef\u53e34000\u4e3a\u5173\u95ed\uff0c\u56e0\u4e3a\u76ee\u524d\u6ca1\u6709\u4efb\u4f55\u5e94\u7528\u7a0b\u5e8f\u5728\u8be5\u7aef\u53e3\u4e0a\u4fa6\u542c\u3002\u540c\u6837\uff0ctelnet\u4e5f\u65e0\u6cd5\u5de5\u4f5c\uff0c\u56e0\u4e3a\u5b83\u4e5f\u9700\u8981\u4e00\u4e2a\u4fa6\u542c\u5e94\u7528\u7a0b\u5e8f\u8fdb\u884c\u7ed1\u5b9a\u3002\u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48nc\u662f\u5982\u6b64\u6709\u7528\u7684\u5de5\u5177\u7684\u539f\u56e0\u3002\u5b83\u53ef\u4ee5\u5728\u4e00\u4e2a\u7b80\u5355\u7684\u547d\u4ee4\u4e2d\u6a21\u62df\u8fd9\u6837\u7684\u73af\u5883\u3002\u4f46\u8fd9\u53ea\u662f\u6682\u65f6\u7684\uff0c\u56e0\u4e3a\u6bcf\u6b21\u91cd\u65b0\u542f\u52a8\u7cfb\u7edf\u65f6\uff0c\u8fd9\u4e9b\u66f4\u6539\u90fd\u4f1a\u88ab\u91cd\u7f6e\u3002<\/div>\n<\/div>\n<h2>\u6301\u4e45\u5316\u89c4\u5219<\/h2>\n<p>\u672c\u6587\u4ecb\u7ecd\u7684\u65b9\u6cd5\u53ea\u4f1a\u5728\u7cfb\u7edf\u5173\u673a\u6216\u91cd\u542f\u4e4b\u524d\u6682\u65f6\u66f4\u65b0\u9632\u706b\u5899\u89c4\u5219\u3002\u56e0\u6b64\uff0c\u5728\u91cd\u65b0\u542f\u52a8\u540e\u9700\u8981\u91cd\u590d\u7c7b\u4f3c\u7684\u6b65\u9aa4\u624d\u80fd\u518d\u6b21\u6253\u5f00\u76f8\u540c\u7684\u7aef\u53e3\u3002<\/p>\n<h3>\u5bf9\u4e8eufw\u9632\u706b\u5899<\/h3>\n<p>\u9632\u706b\u5899\u89c4\u5219\u5728\u91cd\u65b0\u542f\u52a8\u540e\u4e0d\u4f1a\u91cd\u7f6e\u3002\u8fd9\u662f\u56e0\u4e3a\u5b83\u88ab\u6574\u5408\u5230\u542f\u52a8\u8fc7\u7a0b\u4e2d\uff0c\u5185\u6838\u901a\u8fc7\u5e94\u7528\u9002\u5f53\u7684\u914d\u7f6e\u6587\u4ef6\uff0c\u4f7f\u7528ufw\u4fdd\u5b58\u9632\u706b\u5899\u89c4\u5219\u3002<\/p>\n<h3>\u5173\u4e8efirewalld<\/h3>\n<p>\u4f60\u9700\u8981\u4f7f\u7528<code>--permanent<\/code>\u6807\u5fd7\u3002<\/p>\n<p>\u8bf7\u53c2\u8003\u60a8\u6240\u4f7f\u7528\u7684\u53d1\u884c\u7248\u7684\u300a\u5982\u4f55\u8bbe\u7f6efirewalld\u300b\u6765\u8fdb\u884c\u64cd\u4f5c\u3002<\/p>\n<div class=\"post-conf-note\">\n<p class=\"post-conf-desc\">\u6ce8\u610f\uff1a<\/p>\n<div>\nCentOS 7\/8\uff1a\u4e3a\u60a8\u7684\u5e94\u7528\u7a0b\u5e8f\u8bbe\u7f6e\u89c4\u5219\u3002<br \/>\nRocky Linux 8\/9\uff1a\u4e3a\u60a8\u7684\u5e94\u7528\u7a0b\u5e8f\u8bbe\u7f6e\u89c4\u5219\u3002<\/div>\n<\/div>\n<h3>\u5173\u4e8eiptables<\/h3>\n<p>\u4f60\u9700\u8981\u4fdd\u5b58\u914d\u7f6e\u89c4\u5219\u3002\u8fd9\u4e9b\u6559\u7a0b\u63a8\u8350\u4f7f\u7528iptables-persistent\u6765\u5b9e\u73b0\u3002<\/p>\n<p>\u8bf7\u53c2\u8003\u60a8\u6240\u4f7f\u7528\u53d1\u884c\u7248\u7684\u300a\u5982\u4f55\u4f7f\u7528iptables\u8bbe\u7f6e\u9632\u706b\u5899\u300b\u6765\u8bbe\u7f6e\u9632\u706b\u5899\u3002<\/p>\n<div class=\"post-conf-note\">\n<p class=\"post-conf-desc\">\u6ce8\u610f\uff1a<\/p>\n<div>\nUbuntu 12.04: &#8220;\u4fdd\u5b58Iptables\u89c4\u5219&#8221;<br \/>\nUbuntu 14.04: &#8220;\u4fdd\u5b58\u60a8\u7684Iptables\u914d\u7f6e&#8221;<\/div>\n<\/div>\n<h2>\u7ed3\u8bba<\/h2>\n<p>\u5728\u8fd9\u4e2a\u6559\u7a0b\u4e2d\uff0c\u4f60\u5b66\u4e60\u4e86\u5982\u4f55\u5728Linux\u4e0a\u6253\u5f00\u4e00\u4e2a\u65b0\u7684\u7aef\u53e3\uff0c\u5e76\u8bbe\u7f6e\u5b83\u7528\u4e8e\u4f20\u5165\u8fde\u63a5\u3002\u4f60\u8fd8\u4f7f\u7528\u4e86netstat\u3001ss\u3001telnet\u3001nc\u548cnmap\u3002<\/p>\n<p>\u7ee7\u7eed\u5b66\u4e60\uff0c\u6df1\u5165\u7814\u7a76iptables\u9632\u706b\u5899\u5de5\u4f5c\u539f\u7406\uff0ciptables\u548cNetfilter\u67b6\u6784\uff0c\u7406\u89e3\u5957\u63a5\u5b57\uff0c\u4ee5\u53ca\u5982\u4f55\u4f7f\u7528Top\u3001Netstat\u3001Du\u7b49\u5de5\u5177\u76d1\u63a7\u670d\u52a1\u5668\u8d44\u6e90\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7b80\u4ecb \u7aef\u53e3\u662f\u901a\u4fe1\u7684\u7aef\u70b9\u3002\u5728\u64cd\u4f5c\u7cfb\u7edf\u4e2d\uff0c\u7aef\u53e3\u53ef\u4ee5\u5bf9\u7279\u5b9a\u8fdb\u7a0b\u6216\u7f51\u7edc\u670d\u52a1\u7684\u6570\u636e\u5305\u8fdb\u884c\u5f00\u653e\u6216\u5173\u95ed\u3002 \u901a\u5e38\uff0c\u7aef\u53e3\u7528\u4e8e\u8bc6\u522b [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[311,374,372,214,373],"class_list":["post-53","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-linux","tag-ufw","tag-372","tag-214","tag-373"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ 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content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Linux\u7cfb\u7edf\uff1a\u5982\u4f55\u5b89\u5168\u9ad8\u6548\u5730\u5f00\u653e\u7aef\u53e3\uff08\u9632\u706b\u5899\u914d\u7f6e\u8be6\u89e3\uff09\" \/>\n<meta property=\"og:description\" content=\"\u672c\u6307\u5357\u8be6\u7ec6\u4ecb\u7ecd\u4e86\u5728Linux\u7cfb\u7edf\u4e0a\u5f00\u653e\u7aef\u53e3\u7684\u591a\u79cd\u65b9\u6cd5\uff0c\u5305\u62ec\u4f7f\u7528ufw\u3001firewalld\u548ciptables\u7b49\u5de5\u5177\u3002\u4e86\u89e3\u5982\u4f55\u5b89\u5168\u914d\u7f6e\u9632\u706b\u5899\uff0c\u786e\u4fdd\u7f51\u7edc\u670d\u52a1\u6b63\u5e38\u8fd0\u884c\uff0c\u540c\u65f6\u4fdd\u62a4\u60a8\u7684\u670d\u52a1\u5668\u514d\u53d7\u672a\u7ecf\u6388\u6743\u7684\u8bbf\u95ee\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u5982\u4f55\u5728linux\u4e0a\u6253\u5f00\u4e00\u4e2a\u7aef\u53e3\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" 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