{"id":394,"date":"2025-02-08T16:57:42","date_gmt":"2025-02-08T16:57:42","guid":{"rendered":"https:\/\/linuxjk.cn\/?p=394"},"modified":"2025-03-17T07:27:59","modified_gmt":"2025-03-17T07:27:59","slug":"%e6%9f%a5%e7%9c%8b%e7%b3%bb%e7%bb%9f%e7%ab%af%e5%8f%a3","status":"publish","type":"post","link":"https:\/\/linuxjk.cn\/?p=394","title":{"rendered":"\u67e5\u770b\u7cfb\u7edf\u7aef\u53e3"},"content":{"rendered":"\t\t
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\u600e\u4e48\u68c0\u67e5\u670d\u52a1\u5668\u6b63\u5728\u76d1\u542c\uff08\u8fd0\u884c\uff09\u7684\u7aef\u53e3<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\u5728CentOS 9\u4e91\u670d\u52a1\u5668\u4e0a\u68c0\u67e5\u6b63\u5728\u8fd0\u884c\u7684\u7aef\u53e3\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u5b9e\u73b0\uff1a<\/strong><\/p>

### **\u65b9\u6cd5\u4e00\uff1a\u4f7f\u7528 `ss` \u547d\u4ee4\uff08\u63a8\u8350\uff09**<\/strong>
`ss`\uff08Socket Statistics\uff09\u662f\u66ff\u4ee3 `netstat` \u7684\u73b0\u4ee3\u5de5\u5177\uff0c\u6548\u7387\u66f4\u9ad8\u4e14\u9ed8\u8ba4\u9884\u88c5\u3002<\/strong><\/p>

#### 1. \u67e5\u770b\u6240\u6709\u76d1\u542c\u7aef\u53e3<\/strong>
“`bash<\/strong>
sudo ss -tuln<\/strong>
“`<\/strong>
– **\u53c2\u6570\u89e3\u91ca**\uff1a<\/strong>
– `-t`\uff1a\u663e\u793aTCP\u7aef\u53e3<\/strong>
– `-u`\uff1a\u663e\u793aUDP\u7aef\u53e3<\/strong>
– `-l`\uff1a\u4ec5\u663e\u793a\u76d1\u542c\uff08LISTEN\uff09\u72b6\u6001\u7684\u7aef\u53e3<\/strong>
– `-n`\uff1a\u4ee5\u6570\u5b57\u5f62\u5f0f\u663e\u793a\u7aef\u53e3\uff08\u4e0d\u89e3\u6790\u670d\u52a1\u540d\u79f0\uff09<\/strong><\/p>

#### 2. \u67e5\u770b\u7aef\u53e3\u5173\u8054\u7684\u8fdb\u7a0b<\/strong>
“`bash<\/strong>
sudo ss -tulnp<\/strong>
“`<\/strong>
– **\u9644\u52a0\u53c2\u6570**\uff1a<\/strong>
– `-p`\uff1a\u663e\u793a\u5360\u7528\u7aef\u53e3\u7684\u8fdb\u7a0b\u4fe1\u606f\uff08\u9700root\u6743\u9650\uff09<\/strong><\/p>

—<\/strong><\/p>

### **\u65b9\u6cd5\u4e8c\uff1a\u4f7f\u7528 `netstat` \u547d\u4ee4**<\/strong>
\u82e5\u7cfb\u7edf\u672a\u9884\u88c5 `netstat`\uff0c\u9700\u5148\u5b89\u88c5 `net-tools`\uff1a<\/strong>
“`bash<\/strong>
sudo dnf install net-tools -y<\/strong>
“`<\/strong><\/p>

#### \u67e5\u770b\u6240\u6709\u76d1\u542c\u7aef\u53e3\u53ca\u8fdb\u7a0b<\/strong>
“`bash<\/strong>
sudo netstat -tulnp<\/strong>
“`<\/strong>
– **\u53c2\u6570\u89e3\u91ca**\uff1a<\/strong>
– `-t`\/`-u`\uff1aTCP\/UDP\u534f\u8bae<\/strong>
– `-l`\uff1a\u4ec5\u76d1\u542c\u7aef\u53e3<\/strong>
– `-n`\uff1a\u4e0d\u89e3\u6790\u670d\u52a1\u540d<\/strong>
– `-p`\uff1a\u663e\u793a\u8fdb\u7a0b\u4fe1\u606f<\/strong><\/p>

—<\/strong><\/p>

### **\u65b9\u6cd5\u4e09\uff1a\u4f7f\u7528 `lsof` \u547d\u4ee4**<\/strong>
\u82e5\u672a\u5b89\u88c5 `lsof`\uff0c\u9700\u5148\u5b89\u88c5\uff1a<\/strong>
“`bash<\/strong>
sudo dnf install lsof -y<\/strong>
“`<\/strong><\/p>

#### 1. \u67e5\u770b\u6240\u6709\u7f51\u7edc\u8fde\u63a5<\/strong>
“`bash<\/strong>
sudo lsof -i<\/strong>
“`<\/strong><\/p>

#### 2. \u68c0\u67e5\u7279\u5b9a\u7aef\u53e3\uff08\u598280\u7aef\u53e3\uff09<\/strong>
“`bash<\/strong>
sudo lsof -i :80<\/strong>
“`<\/strong><\/p>

—<\/strong><\/p>

### **\u65b9\u6cd5\u56db\uff1a\u68c0\u67e5\u9632\u706b\u5899\u72b6\u6001**<\/strong>
\u786e\u8ba4\u9632\u706b\u5899\u662f\u5426\u653e\u884c\u7aef\u53e3\uff08CentOS 9\u9ed8\u8ba4\u4f7f\u7528 `firewalld`\uff09\uff1a<\/strong>
“`bash<\/strong>
sudo firewall-cmd –list-all<\/strong>
“`<\/strong>
– \u8f93\u51fa\u4e2d\u7684 `ports` \u5b57\u6bb5\u663e\u793a\u5df2\u653e\u884c\u7684\u7aef\u53e3\u3002<\/strong><\/p>

—<\/strong><\/p>

### **\u8f93\u51fa\u793a\u4f8b\u53ca\u89e3\u6790**<\/strong>
\u4ee5 `ss -tulnp` \u4e3a\u4f8b\uff1a<\/strong>
“`<\/strong>
Netid State Recv-Q Send-Q Local Address:Port Peer Address:Port Process<\/strong>
tcp LISTEN 0 128 0.0.0.0:22 0.0.0.0:* users:((“sshd”,pid=1234,fd=3))<\/strong>
“`<\/strong>
– **Local Address:Port**\uff1a`0.0.0.0:22` \u8868\u793a\u6240\u6709IP\u768422\u7aef\u53e3\uff08SSH\uff09\u6b63\u5728\u76d1\u542c\u3002<\/strong>
– **Process**\uff1a\u8fdb\u7a0b\u540d\uff08`sshd`\uff09\u53caPID\uff08`1234`\uff09\u3002<\/strong><\/p>

—<\/strong><\/p>

### **\u6ce8\u610f\u4e8b\u9879**<\/strong>
1. **\u6743\u9650\u95ee\u9898**\uff1a\u67e5\u770b\u8fdb\u7a0b\u4fe1\u606f\u9700 `sudo` \u6216 root \u6743\u9650\u3002<\/strong>
2. **\u4e91\u670d\u52a1\u5668\u5b89\u5168\u7ec4**\uff1a\u82e5\u5916\u90e8\u65e0\u6cd5\u8bbf\u95ee\u7aef\u53e3\uff0c\u9700\u68c0\u67e5\u4e91\u670d\u52a1\u5546\u7684\u5b89\u5168\u7ec4\u914d\u7f6e\u3002<\/strong>
3. **\u670d\u52a1\u72b6\u6001**\uff1a\u7aef\u53e3\u76d1\u542c\u4ec5\u8868\u793a\u670d\u52a1\u5df2\u542f\u52a8\uff0c\u4e0d\u4ee3\u8868\u670d\u52a1\u6b63\u5e38\u54cd\u5e94\uff08\u53ef\u7528 `curl` \u6216 `telnet` \u8fdb\u4e00\u6b65\u6d4b\u8bd5\uff09\u3002<\/strong><\/p>

\u901a\u8fc7\u4ee5\u4e0a\u65b9\u6cd5\uff0c\u4f60\u53ef\u4ee5\u5feb\u901f\u5b9a\u4f4d\u670d\u52a1\u5668\u4e0a\u8fd0\u884c\u7684\u7aef\u53e3\u53ca\u5176\u5173\u8054\u670d\u52a1\u3002<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

\u600e\u4e48\u68c0\u67e5\u670d\u52a1\u5668\u6b63\u5728\u76d1\u542c\uff08\u8fd0\u884c\uff09\u7684\u7aef\u53e3 \u5728CentOS 9\u4e91\u670d\u52a1\u5668\u4e0a\u68c0\u67e5\u6b63\u5728\u8fd0\u884c\u7684\u7aef\u53e3\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u5b9e\u73b0\uff1a […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[15],"class_list":["post-394","post","type-post","status-publish","format-standard","hentry","category-vxhs888p","tag-check_error"],"_links":{"self":[{"href":"https:\/\/linuxjk.cn\/index.php?rest_route=\/wp\/v2\/posts\/394","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/linuxjk.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/linuxjk.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/linuxjk.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/linuxjk.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=394"}],"version-history":[{"count":4,"href":"https:\/\/linuxjk.cn\/index.php?rest_route=\/wp\/v2\/posts\/394\/revisions"}],"predecessor-version":[{"id":398,"href":"https:\/\/linuxjk.cn\/index.php?rest_route=\/wp\/v2\/posts\/394\/revisions\/398"}],"wp:attachment":[{"href":"https:\/\/linuxjk.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=394"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/linuxjk.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=394"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/linuxjk.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=394"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}