{"id":211113,"date":"2021-02-18T09:07:24","date_gmt":"2021-02-18T01:07:24","guid":{"rendered":"https:\/\/lrxjmw.cn\/?p=211113"},"modified":"2021-02-02T16:43:26","modified_gmt":"2021-02-02T08:43:26","slug":"linux-netstat-check","status":"publish","type":"post","link":"https:\/\/lrxjmw.cn\/linux-netstat-check.html","title":{"rendered":"\u804a\u804alinux\u67e5\u770b\u670d\u52a1\u548c\u7aef\u53e3\u72b6\u6001\u547d\u4ee4netstat"},"content":{"rendered":"<table>\n<tbody>\n<tr>\n<td style=\"padding: 5px 12px; width: 25px; font-size: 22px; text-align: center; background: #E8E8E8; line-height: 30px; color: #999;\">\u5bfc\u8bfb<\/td>\n<td style=\"padding: 10px 10px 12px; line-height: 20px;\"><strong>\u4f7f\u7528netstat\u547d\u4ee4\u53ef\u4ee5\u67e5\u770blinux\u7cfb\u7edf\u4e2d\u6b63\u5728\u4f7f\u7528\u7684\u670d\u52a1\u548c\u7aef\u53e3\u60c5\u51b5<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div   id="j6sjwn9j3u"    style=\"font-size: 14pt; color: white; background-color: black; border-left: red 10px solid; padding-left: 14px; margin-bottom: 20px; margin-top: 20px;\"><strong>\u5e38\u89c1\u53c2\u6570<\/strong><\/div>\n<p>-a (all)\u663e\u793a\u6240\u6709\u9009\u9879\uff0c\u9ed8\u8ba4\u4e0d\u663e\u793aLISTEN\u76f8\u5173<br \/>\n-t (tcp)\u4ec5\u663e\u793atcp\u76f8\u5173\u9009\u9879<br \/>\n-u (udp)\u4ec5\u663e\u793audp\u76f8\u5173\u9009\u9879<br \/>\n-n \u62d2\u7edd\u663e\u793a\u522b\u540d\uff0c\u80fd\u663e\u793a\u6570\u5b57\u7684\u5168\u90e8\u8f6c\u5316\u6210\u6570\u5b57\u3002<br \/>\n-l \u4ec5\u5217\u51fa\u6709\u5728 Listen (\u76d1\u542c) \u7684\u670d\u52a1\u72b6\u6001<\/p>\n<p>-p \u663e\u793a\u5efa\u7acb\u76f8\u5173\u94fe\u63a5\u7684\u7a0b\u5e8f\u540d<br \/>\n-r \u663e\u793a\u8def\u7531\u4fe1\u606f\uff0c\u8def\u7531\u8868<br \/>\n-e \u663e\u793a\u6269\u5c55\u4fe1\u606f\uff0c\u4f8b\u5982uid\u7b49<br \/>\n-s \u6309\u5404\u4e2a\u534f\u8bae\u8fdb\u884c\u7edf\u8ba1<br \/>\n-c \u6bcf\u9694\u4e00\u4e2a\u56fa\u5b9a\u65f6\u95f4\uff0c\u6267\u884c\u8be5netstat\u547d\u4ee4\u3002<\/p>\n<p>\u63d0\u793a\uff1aLISTEN\u548cLISTENING\u7684\u72b6\u6001\u53ea\u6709\u7528-a\u6216\u8005-l\u624d\u80fd\u770b\u5230<\/p>\n<div   id="j6sjwn9j3u"    style=\"font-size: 14pt; color: white; background-color: black; border-left: red 10px solid; padding-left: 14px; margin-bottom: 20px; margin-top: 20px;\"><strong>\u5b9e\u7528\u547d\u4ee4\u5b9e\u4f8b<\/strong><\/div>\n<p>1. \u5217\u51fa\u6240\u6709\u7aef\u53e3 (\u5305\u62ec\u76d1\u542c\u548c\u672a\u76d1\u542c\u7684)<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/linux-netstat-check-01.png\" alt=\"\" width=\"553\" height=\"260\" class=\"alignnone size-full wp-image-211116\" srcset=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/linux-netstat-check-01.png 553w, https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/linux-netstat-check-01-300x141.png 300w\" sizes=\"auto, (max-width: 553px) 100vw, 553px\" \/><\/p>\n<p>2. \u5217\u51fa\u6240\u6709\u5904\u4e8e\u76d1\u542c\u72b6\u6001\u7684 Sockets<\/p>\n<p>\u53ea\u663e\u793a\u76d1\u542c\u7aef\u53e3 netstat -l<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/linux-netstat-check-02.png\" alt=\"\" width=\"735\" height=\"564\" class=\"alignnone size-full wp-image-211118\" srcset=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/linux-netstat-check-02.png 735w, https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/linux-netstat-check-02-300x230.png 300w\" sizes=\"auto, (max-width: 735px) 100vw, 735px\" \/><\/p>\n<p>\u53ea\u5217\u51fa\u6240\u6709\u76d1\u542c tcp \u7aef\u53e3 netstat -lt<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/linux-netstat-check-03.png\" alt=\"\" width=\"635\" height=\"210\" class=\"alignnone size-full wp-image-211119\" srcset=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/linux-netstat-check-03.png 635w, https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/linux-netstat-check-03-300x99.png 300w\" sizes=\"auto, (max-width: 635px) 100vw, 635px\" \/><\/p>\n<p>\u53ea\u5217\u51fa\u6240\u6709\u76d1\u542c udp \u7aef\u53e3 netstat -lu<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/linux-netstat-check-04.png\" alt=\"\" width=\"688\" height=\"50\" class=\"alignnone size-full wp-image-211121\" srcset=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/linux-netstat-check-04.png 688w, https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/linux-netstat-check-04-300x22.png 300w\" sizes=\"auto, (max-width: 688px) 100vw, 688px\" \/><\/p>\n<p>\u53ea\u5217\u51fa\u6240\u6709\u76d1\u542c UNIX \u7aef\u53e3 netstat -lx<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/linux-netstat-check-05.png\" alt=\"\" width=\"743\" height=\"191\" class=\"alignnone size-full wp-image-211122\" srcset=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/linux-netstat-check-05.png 743w, https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/linux-netstat-check-05-300x77.png 300w\" sizes=\"auto, (max-width: 743px) 100vw, 743px\" \/><\/p>\n<p>3. \u663e\u793a\u6bcf\u4e2a\u534f\u8bae\u7684\u7edf\u8ba1\u4fe1\u606f<\/p>\n<p>\u663e\u793a\u6240\u6709\u7aef\u53e3\u7684\u7edf\u8ba1\u4fe1\u606f netstat -s<br \/>\n\u663e\u793a TCP \u6216 UDP \u7aef\u53e3\u7684\u7edf\u8ba1\u4fe1\u606f netstat -st \u6216 -su<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/linux-netstat-check-06.png\" alt=\"\" width=\"499\" height=\"621\" class=\"alignnone size-full wp-image-211124\" srcset=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/linux-netstat-check-06.png 499w, https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/linux-netstat-check-06-241x300.png 241w\" sizes=\"auto, (max-width: 499px) 100vw, 499px\" \/><\/p>\n<p>4.\u5728 netstat \u8f93\u51fa\u4e2d\u663e\u793a PID \u548c\u8fdb\u7a0b\u540d\u79f0 netstat -p<\/p>\n<p>5. \u4e0d\u663e\u793a\u4e3b\u673a\uff0c\u7aef\u53e3\u548c\u7528\u6237\u540d (host, port or user)<\/p>\n<p>\u5f53\u4f60\u4e0d\u60f3\u8ba9\u4e3b\u673a\uff0c\u7aef\u53e3\u548c\u7528\u6237\u540d\u663e\u793a\uff0c\u4f7f\u7528 netstat -n\u3002\u5c06\u4f1a\u4f7f\u7528\u6570\u5b57\u4ee3\u66ff\u90a3\u4e9b\u540d\u79f0\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/linux-netstat-check-07.png\" alt=\"\" width=\"707\" height=\"439\" class=\"alignnone size-full wp-image-211125\" srcset=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/linux-netstat-check-07.png 707w, https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/linux-netstat-check-07-300x186.png 300w\" sizes=\"auto, (max-width: 707px) 100vw, 707px\" \/><\/p>\n<p>6. \u6301\u7eed\u8f93\u51fa netstat \u4fe1\u606f<\/p>\n<p>netstat \u5c06\u6bcf\u9694\u4e00\u79d2\u8f93\u51fa\u7f51\u7edc\u4fe1\u606f\u3002netstat -c<\/p>\n<p>7. \u663e\u793a\u6838\u5fc3\u8def\u7531\u4fe1\u606f netstat -r<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/linux-netstat-check-08.png\" alt=\"\" width=\"670\" height=\"108\" class=\"alignnone size-full wp-image-211126\" srcset=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/linux-netstat-check-08.png 670w, https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/linux-netstat-check-08-300x48.png 300w\" sizes=\"auto, (max-width: 670px) 100vw, 670px\" \/><\/p>\n<p>8. \u627e\u51fa\u7a0b\u5e8f\u8fd0\u884c\u7684\u7aef\u53e3<\/p>\n<p>\u5e76\u4e0d\u662f\u6240\u6709\u7684\u8fdb\u7a0b\u90fd\u80fd\u627e\u5230\uff0c\u6ca1\u6709\u6743\u9650\u7684\u4f1a\u4e0d\u663e\u793a\uff0c\u4f7f\u7528 root \u6743\u9650\u67e5\u770b\u6240\u6709\u7684\u4fe1\u606f\u3002<\/p>\n<pre>netstat -ap | grep ssh<\/pre>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/linux-netstat-check-09.png\" alt=\"\" width=\"822\" height=\"142\" class=\"alignnone size-full wp-image-211127\" srcset=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/linux-netstat-check-09.png 822w, https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/linux-netstat-check-09-300x52.png 300w, https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/linux-netstat-check-09-768x133.png 768w\" sizes=\"auto, (max-width: 822px) 100vw, 822px\" \/><\/p>\n<p>\u5e38\u7528\uff1a<\/p>\n<p>netstat -nat  \u5217\u51fa\u6240\u6709\u7684tcp\u7aef\u53e3<\/p>\n","protected":false},"excerpt":{"rendered":"<p>-a (all)\u663e\u793a\u6240\u6709\u9009\u9879\uff0c\u9ed8\u8ba4\u4e0d\u663e\u793aLISTEN\u76f8\u5173 -t (tcp)\u4ec5\u663e\u793atcp\u76f8\u5173\u9009\u9879 -u (udp [&hellip;]<\/p>\n","protected":false},"author":310,"featured_media":211129,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[55],"tags":[],"class_list":["post-211113","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-thread"],"acf":[],"_links":{"self":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/211113","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/users\/310"}],"replies":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/comments?post=211113"}],"version-history":[{"count":8,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/211113\/revisions"}],"predecessor-version":[{"id":211157,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/211113\/revisions\/211157"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/media\/211129"}],"wp:attachment":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/media?parent=211113"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/categories?post=211113"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/tags?post=211113"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}