{"id":68754,"date":"2025-06-04T10:14:27","date_gmt":"2025-06-04T02:14:27","guid":{"rendered":"https:\/\/fwq.ai\/blog\/?p=68754"},"modified":"2025-06-04T11:53:24","modified_gmt":"2025-06-04T03:53:24","slug":"telnet-%e5%91%bd%e4%bb%a4%e8%af%a6%e8%a7%a3%e4%b8%8e%e5%ae%9e%e7%94%a8%e6%8c%87%e5%8d%97","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/68754\/","title":{"rendered":"telnet \u547d\u4ee4\u8be6\u89e3\u4e0e\u5b9e\u7528\u6307\u5357"},"content":{"rendered":"<h2>\u5f15\u8a00<\/h2>\n<p>\u5728 Linux \u548c macOS \u7b49\u7c7b Unix \u7cfb\u7edf\u4e2d\uff0c<code>telnet<\/code> \u547d\u4ee4\u4e00\u76f4\u662f\u7f51\u7edc\u8bca\u65ad\u4e0e\u8fdc\u7a0b\u767b\u5f55\u7684\u7ecf\u5178\u5de5\u5177\u3002\u5c3d\u7ba1\u5b83\u4e0d\u63d0\u4f9b\u52a0\u5bc6\u4f20\u8f93\uff0c\u4f46\u5728\u6d4b\u8bd5\u7279\u5b9a\u7aef\u53e3\u8fde\u901a\u6027\u3001\u8c03\u8bd5\u7f51\u7edc\u670d\u52a1\u6216\u7ba1\u7406\u4e00\u4e9b\u8001\u65e7\u8bbe\u5907\u65f6\uff0c<code>telnet<\/code> \u4f9d\u7136\u53d1\u6325\u7740\u91cd\u8981\u4f5c\u7528\u3002\u672c\u6587\u5c06\u7cfb\u7edf\u4ecb\u7ecd <code>telnet<\/code> \u7684\u5e38\u89c1\u7528\u6cd5\u548c\u6ce8\u610f\u4e8b\u9879\uff0c\u5e76\u7ed3\u5408\u5b9e\u9645\u6848\u4f8b\u8bf4\u660e\u5982\u4f55\u5229\u7528 <strong>\u7f8e\u56fd\u670d\u52a1\u5668<\/strong> \u73af\u5883\u8fdb\u884c\u9ad8\u6548\u6d4b\u8bd5\u548c\u90e8\u7f72\u3002<\/p>\n<hr \/>\n<h2>\u4e00\u3001telnet \u57fa\u672c\u8bed\u6cd5\u4e0e\u529f\u80fd\u6982\u8ff0<\/h2>\n<h3>1. \u57fa\u672c\u8bed\u6cd5<\/h3>\n<pre><code>telnet [\u9009\u9879] [\u4e3b\u673a] [\u7aef\u53e3]\r\n<\/code><\/pre>\n<ul>\n<li><strong>\u4e3b\u673a<\/strong>\uff1a\u76ee\u6807\u670d\u52a1\u5668\u5730\u5740\uff08\u57df\u540d\u6216 IP\uff09\u3002<\/li>\n<li><strong>\u7aef\u53e3<\/strong>\uff1a\u5f85\u6d4b\u8bd5\u7684\u7aef\u53e3\u53f7\uff0c\u7701\u7565\u65f6\u9ed8\u8ba4\u4f7f\u7528 23 \u7aef\u53e3\uff08Telnet \u670d\u52a1\u7aef\u53e3\uff09\u3002<\/li>\n<\/ul>\n<h3>2. \u5e38\u89c1\u9009\u9879<\/h3>\n<ul>\n<li><code>-a<\/code>\uff1a\u5c1d\u8bd5\u81ea\u52a8\u767b\u5f55\uff08\u5982\u679c\u8fdc\u7a0b\u670d\u52a1\u5668\u652f\u6301\u81ea\u52a8\u767b\u5f55\uff09\u3002<\/li>\n<li><code>-e &lt;\u8f6c\u4e49\u5b57\u7b26&gt;<\/code>\uff1a\u6307\u5b9a\u8f6c\u4e49\u5b57\u7b26\uff0c\u9ed8\u8ba4\u662f <code>^]<\/code>\uff08Ctrl + ]\uff09\u3002<\/li>\n<li><code>-l &lt;\u7528\u6237\u540d&gt;<\/code>\uff1a\u6307\u5b9a\u767b\u5f55\u7528\u6237\u540d\u3002<\/li>\n<li><code>-v<\/code>\uff1a\u8be6\u7ec6\u6a21\u5f0f\uff0c\u663e\u793a\u8fde\u63a5\u63e1\u624b\u3001DNS \u89e3\u6790\u7b49\u8be6\u7ec6\u4fe1\u606f\u3002<\/li>\n<\/ul>\n<hr \/>\n<h2>\u4e8c\u3001telnet \u5e38\u7528\u793a\u4f8b<\/h2>\n<h3>1. \u8fde\u63a5\u8fdc\u7a0b\u4e3b\u673a<\/h3>\n<pre><code>telnet example.com\r\n<\/code><\/pre>\n<p>\u7b49\u4ef7\u4e8e <code>telnet example.com 23<\/code>\uff0c\u5c1d\u8bd5\u8fde\u63a5\u5230\u76ee\u6807\u4e3b\u673a\u7684 Telnet \u670d\u52a1\u3002<\/p>\n<h3>2. \u8fde\u63a5\u6307\u5b9a\u7aef\u53e3\uff08HTTP \u670d\u52a1\u6d4b\u8bd5\uff09<\/h3>\n<pre><code>telnet example.com 80\r\n<\/code><\/pre>\n<p>\u8fde\u63a5\u5230 HTTP \u670d\u52a1\u7aef\u53e3\u540e\uff0c\u76f4\u63a5\u8f93\u5165\u5982\u4e0b\u5185\u5bb9\u53ef\u83b7\u53d6\u54cd\u5e94\uff1a<\/p>\n<pre><code>GET \/ HTTP\/1.1\r\nHost: example.com\r\n\r\n<\/code><\/pre>\n<p>\u6309\u56de\u8f66\u4e24\u6b21\u540e\uff0c\u4f1a\u8fd4\u56de HTTP \u62a5\u6587\u5934\u53ca\u9875\u9762\u5185\u5bb9\uff0c\u5e2e\u52a9\u8c03\u8bd5 Web \u670d\u52a1\u3002<\/p>\n<h3>3. \u6d4b\u8bd5 SMTP \u670d\u52a1<\/h3>\n<pre><code>telnet smtp.example.com 25\r\n<\/code><\/pre>\n<p>\u8fde\u63a5\u540e\u53ef\u624b\u52a8\u8f93\u5165 <code>HELO<\/code>\u3001<code>MAIL FROM:<\/code> \u7b49 SMTP \u547d\u4ee4\uff0c\u7528\u4e8e\u90ae\u4ef6\u670d\u52a1\u5668\u8c03\u8bd5\u3002<\/p>\n<h3>4. \u81ea\u52a8\u767b\u5f55<\/h3>\n<pre><code>telnet -a -l username example.com\r\n<\/code><\/pre>\n<p>\u5982\u679c\u8fdc\u7a0b\u4e3b\u673a\u914d\u7f6e\u4e86\u65e0\u5bc6\u7801\u81ea\u52a8\u767b\u5f55\uff0c\u53ef\u76f4\u63a5\u4f7f\u7528\u6b64\u65b9\u5f0f\u3002<\/p>\n<hr \/>\n<h2>\u4e09\u3001telnet \u5b89\u88c5\u4e0e\u6ce8\u610f\u4e8b\u9879<\/h2>\n<h3>1. \u5b89\u88c5\u65b9\u6cd5<\/h3>\n<ul>\n<li><strong>Debian\/Ubuntu \u7cfb\u7edf<\/strong>\n<pre><code class=\"language-bash\">sudo apt-get update\r\nsudo apt-get install telnet\r\n<\/code><\/pre>\n<\/li>\n<li><strong>CentOS\/RHEL \u7cfb\u7edf<\/strong>\n<pre><code class=\"language-bash\">sudo yum install telnet\r\n<\/code><\/pre>\n<\/li>\n<li><strong>macOS\uff08\u4f7f\u7528 Homebrew\uff09<\/strong>\n<pre><code class=\"language-bash\">brew install telnet\r\n<\/code><\/pre>\n<\/li>\n<\/ul>\n<h3>2. \u5b89\u5168\u6027<\/h3>\n<ul>\n<li><strong>\u660e\u6587\u4f20\u8f93\u98ce\u9669<\/strong>\uff1atelnet \u4ee5\u660e\u6587\u65b9\u5f0f\u4f20\u8f93\u7528\u6237\u540d\u548c\u5bc6\u7801\uff0c\u4e0d\u9002\u5408\u5728\u516c\u7f51\u4e0a\u4f20\u8f93\u654f\u611f\u6570\u636e\u3002<\/li>\n<li><strong>\u52a0\u5bc6\u66ff\u4ee3<\/strong>\uff1a\u5728\u751f\u4ea7\u73af\u5883\u4e2d\uff0c\u5c3d\u91cf\u4f7f\u7528 SSH\uff08<code>ssh<\/code> \u547d\u4ee4\uff09\u8fdb\u884c\u8fdc\u7a0b\u767b\u5f55\u548c\u7ba1\u7406\uff0c\u4ee5\u4fdd\u8bc1\u6570\u636e\u52a0\u5bc6\u4f20\u8f93\u3002<\/li>\n<\/ul>\n<h3>3. \u7f51\u7edc\u914d\u7f6e<\/h3>\n<ul>\n<li><strong>\u7aef\u53e3\u5f00\u653e<\/strong>\uff1a\u786e\u4fdd\u76ee\u6807\u4e3b\u673a\u9632\u706b\u5899\u5141\u8bb8\u76ee\u6807\u7aef\u53e3\uff08\u5982 23\u300180\u300125 \u7b49\uff09\u8bbf\u95ee\u3002<\/li>\n<li><strong>\u6743\u9650\u95ee\u9898<\/strong>\uff1a\u90e8\u5206\u7cfb\u7edf\u9700\u4f7f\u7528 <code>sudo telnet<\/code> \u6765\u6d4b\u8bd5\u53d7\u9650\u7aef\u53e3\uff08\u5982 1024 \u4ee5\u4e0b\u7684\u7aef\u53e3\uff09\u3002<\/li>\n<\/ul>\n<hr \/>\n<h2>\u56db\u3001\u5e38\u89c1\u6545\u969c\u4e0e\u6392\u67e5<\/h2>\n<ol>\n<li><strong>\u65e0\u6cd5\u8fde\u63a5\u5230\u76ee\u6807\u4e3b\u673a<\/strong>\n<ul>\n<li>\u786e\u8ba4\u4e3b\u673a IP\/\u57df\u540d\u662f\u5426\u6b63\u786e\uff1b\u4f7f\u7528 <code>ping<\/code> \u6d4b\u8bd5\u7f51\u7edc\u8fde\u901a\u6027\u3002<\/li>\n<li>\u68c0\u67e5\u76ee\u6807\u4e3b\u673a\u9632\u706b\u5899\u89c4\u5219\uff0c\u786e\u4fdd\u7aef\u53e3\u672a\u88ab\u963b\u6b62\u3002<\/li>\n<li>\u786e\u4fdd\u8fdc\u7a0b\u670d\u52a1\u6b63\u5728\u76d1\u542c\u8be5\u7aef\u53e3\uff0c\u53ef\u5728\u76ee\u6807\u670d\u52a1\u5668\u4e0a\u4f7f\u7528 <code>netstat -tuln | grep 25<\/code> \u7b49\u547d\u4ee4\u67e5\u770b\u3002<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u8fde\u63a5\u8d85\u65f6<\/strong>\n<ul>\n<li>\u672c\u5730\u7f51\u7edc\u662f\u5426\u53ef\u8fbe\uff0c\u5c1d\u8bd5\u66f4\u6362\u7f51\u7edc\u73af\u5883\u6216 VPN\uff1b<\/li>\n<li>\u76ee\u6807\u4e3b\u673a\u662f\u5426\u54cd\u5e94\u7f13\u6162\uff0c\u53ef\u4f7f\u7528 <code>nmap<\/code> \u7b49\u5de5\u5177\u626b\u63cf\u5176\u7aef\u53e3\u5f00\u653e\u60c5\u51b5\u3002<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u4ea4\u4e92\u5f02\u5e38<\/strong>\n<ul>\n<li>\u67d0\u4e9b\u534f\u8bae\u5bf9\u56de\u8f66\u6362\u884c\u654f\u611f\uff0c\u5982 HTTP \u8bf7\u6c42\u5934\u9700\u8981\u5728\u6bcf\u884c\u672b\u6dfb\u52a0 <code>\\r\\n<\/code>\uff1b<\/li>\n<li>\u786e\u8ba4\u5728 <code>telnet<\/code> \u4e2d\u624b\u52a8\u6572\u5165\u7684\u547d\u4ee4\u7b26\u5408\u534f\u8bae\u89c4\u8303\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<hr \/>\n<h2>\u4e94\u3001\u5728\u7f8e\u56fd\u670d\u52a1\u5668\u73af\u5883\u4e0b\u7684\u5e94\u7528\u5efa\u8bae<\/h2>\n<p>\u5c06 <code>telnet<\/code> \u7528\u4e8e\u90e8\u7f72\u5728\u6d77\u5916\u8282\u70b9\u7684\u670d\u52a1\u5668\u8c03\u8bd5\u65f6\uff0c\u9009\u62e9<strong>\u7f8e\u56fd\u4e91\u670d\u52a1\u5668<\/strong>\u4f18\u52bf\u660e\u663e\uff1a<\/p>\n<ol>\n<li><strong>\u8de8\u5883\u7f51\u7edc\u6d4b\u8bd5\u9ad8\u6548<\/strong><br \/>\n\u5728\u4e2d\u56fd\u5927\u9646\u73af\u5883\u4e0b\uff0c\u5982\u679c\u9700\u8981\u6d4b\u8bd5\u4f4d\u4e8e\u7f8e\u56fd\u7684 Web \u5e94\u7528\u6216\u90ae\u4ef6\u670d\u52a1\uff0c\u901a\u8fc7\u914d\u7f6e\u7f8e\u56fd\u8282\u70b9\u80fd\u76f4\u63a5\u68c0\u9a8c\u6d77\u5916\u7f51\u7edc\u8d28\u91cf\u548c\u8fde\u901a\u6027\u3002<\/li>\n<li><strong>\u73af\u5883\u4e00\u81f4\u6027<\/strong><br \/>\n\u4f7f\u7528\u7f8e\u56fd\u670d\u52a1\u5668\u8fdb\u884c\u751f\u4ea7\u73af\u5883\u90e8\u7f72\uff0c\u53ef\u907f\u514d\u56fd\u5185\u4e0e\u6d77\u5916\u73af\u5883\u5dee\u5f02\u5bfc\u81f4\u7684\u517c\u5bb9\u95ee\u9898\uff0c\u7ed3\u5408 <code>telnet<\/code> \u547d\u4ee4\u80fd\u591f\u5feb\u901f\u9a8c\u8bc1\u7aef\u53e3\u4e0e\u670d\u52a1\u53ef\u7528\u6027\u3002<\/li>\n<li><strong>\u5e26\u5bbd\u7a33\u5b9a\u6027<\/strong><br \/>\n\u4f18\u8d28\u7684<strong>\u7f8e\u56fd\u72ec\u7acb\u670d\u52a1\u5668<\/strong>\u901a\u5e38\u63d0\u4f9b\u591a\u7ebf\u8def BGP \u63a5\u5165\uff0c\u53ef\u4fdd\u8bc1\u9ad8\u5e76\u53d1\u573a\u666f\u4e0b\u7aef\u53e3\u68c0\u6d4b\u4e0e\u6d41\u91cf\u8c03\u8bd5\u65e0\u660e\u663e\u6296\u52a8\u3002<\/li>\n<\/ol>\n<hr \/>\n<h2>\u516d\u3001\u603b\u7ed3<\/h2>\n<p><code>telnet<\/code> \u4f5c\u4e3a\u4e00\u4e2a\u7ecf\u5178\u7684\u7f51\u7edc\u6d4b\u8bd5\u5de5\u5177\uff0c\u5728\u73b0\u4ee3\u8fd0\u7ef4\u573a\u666f\u4e2d\u4ecd\u7136\u6709\u4e0d\u53ef\u66ff\u4ee3\u7684\u4ef7\u503c\uff0c\u5c24\u5176\u9002\u7528\u4e8e\u8c03\u8bd5 HTTP\u3001SMTP\u3001FTP \u7b49\u660e\u6587\u534f\u8bae\u3002\u867d\u7136\u5728\u5b89\u5168\u8981\u6c42\u8f83\u9ad8\u7684\u73af\u5883\u4e2d\u5e94\u4f18\u5148\u4f7f\u7528 SSH\uff0c\u4f46\u5728\u6d4b\u8bd5\u7aef\u53e3\u8fde\u901a\u6027\u548c\u8c03\u8bd5\u7b80\u5355\u670d\u52a1\u65f6\uff0c<code>telnet<\/code> \u4ecd\u7136\u662f\u5feb\u901f\u3001\u9ad8\u6548\u7684\u9009\u62e9\u3002\u7ed3\u5408<a href=\"https:\/\/fwq.ai\/\"><strong>\u7f8e\u56fdvps<\/strong><\/a>\u73af\u5883\u8fdb\u884c\u8de8\u5883\u8fde\u901a\u6027\u6d4b\u8bd5\u4e0e\u751f\u4ea7\u90e8\u7f72\uff0c\u53ef\u4ee5\u8ba9\u5f00\u53d1\u8005\u548c\u8fd0\u7ef4\u56e2\u961f\u66f4\u76f4\u89c2\u5730\u638c\u63e1\u5e94\u7528\u5728\u6d77\u5916\u8282\u70b9\u7684\u53ef\u7528\u6027\u4e0e\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5f15\u8a00 \u5728 Linux \u548c macOS \u7b49\u7c7b Unix \u7cfb\u7edf\u4e2d\uff0ctelnet \u547d\u4ee4\u4e00\u76f4\u662f\u7f51\u7edc\u8bca\u65ad\u4e0e\u8fdc\u7a0b\u767b\u5f55\u7684\u7ecf\u5178\u5de5\u5177\u3002\u5c3d\u7ba1\u5b83\u4e0d\u63d0\u4f9b\u52a0\u5bc6\u4f20\u8f93\uff0c\u4f46\u5728\u6d4b\u8bd5\u7279\u5b9a\u7aef\u53e3\u8fde\u901a\u6027\u3001\u8c03\u8bd5\u7f51\u7edc\u670d\u52a1\u6216\u7ba1\u7406\u4e00\u4e9b\u8001\u65e7\u8bbe\u5907\u65f6\uff0ctelnet \u4f9d\u7136\u53d1\u6325\u7740\u91cd\u8981\u4f5c\u7528\u3002\u672c\u6587\u5c06\u7cfb\u7edf\u4ecb\u7ecd telnet \u7684\u5e38\u89c1\u7528\u6cd5\u548c\u6ce8\u610f\u4e8b\u9879\uff0c\u5e76\u7ed3\u5408\u5b9e\u9645\u6848\u4f8b\u8bf4\u660e\u5982\u4f55\u5229\u7528 \u7f8e\u56fd\u670d\u52a1\u5668 \u73af\u5883\u8fdb\u884c\u9ad8\u6548\u6d4b\u8bd5\u548c\u90e8\u7f72\u3002 \u4e00\u3001telnet \u57fa\u672c\u8bed\u6cd5\u4e0e\u529f\u80fd\u6982\u8ff0 1. \u57fa\u672c\u8bed\u6cd5 telnet [\u9009\u9879] [\u4e3b\u673a] [\u7aef\u53e3] \u4e3b\u673a\uff1a\u76ee\u6807\u670d\u52a1\u5668\u5730\u5740\uff08\u57df\u540d\u6216 IP\uff09\u3002 \u7aef\u53e3\uff1a\u5f85\u6d4b\u8bd5\u7684\u7aef\u53e3\u53f7\uff0c\u7701\u7565\u65f6\u9ed8\u8ba4\u4f7f\u7528 23 \u7aef\u53e3\uff08Telnet \u670d\u52a1\u7aef\u53e3\uff09\u3002 2. \u5e38\u89c1\u9009\u9879 -a\uff1a\u5c1d\u8bd5\u81ea\u52a8\u767b\u5f55\uff08\u5982\u679c\u8fdc\u7a0b\u670d\u52a1\u5668\u652f\u6301\u81ea\u52a8\u767b\u5f55\uff09\u3002 -e &lt;\u8f6c\u4e49\u5b57\u7b26&gt;\uff1a\u6307\u5b9a\u8f6c\u4e49\u5b57\u7b26\uff0c\u9ed8\u8ba4\u662f ^]\uff08Ctrl + ]\uff09\u3002 -l 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