{"id":5031,"date":"2021-02-03T00:26:01","date_gmt":"2021-02-02T16:26:01","guid":{"rendered":"https:\/\/damogame.cn\/wordpress\/?p=5031"},"modified":"2021-02-03T00:26:01","modified_gmt":"2021-02-02T16:26:01","slug":"linux%e5%ae%88%e6%8a%a4%e8%bf%9b%e7%a8%8bdaemon%e5%8f%8a%e5%85%b6%e7%ae%a1%e7%90%86","status":"publish","type":"post","link":"https:\/\/i007.cc\/wordpress\/archives\/5031","title":{"rendered":"Linux\u5b88\u62a4\u8fdb\u7a0bDaemon\u53ca\u5176\u7ba1\u7406"},"content":{"rendered":"<div class=\"rEsl9f\">\n<div class=\"_2mYfmT\">\n<div class=\"s-dsoj\"><a href=\"https:\/\/www.jianshu.com\/p\/22261a5283d4?utm_campaign=maleskine&amp;utm_content=note&amp;utm_medium=seo_notes&amp;utm_source=recommendation\">\u539f\u6587\u5730\u5740<\/a><\/div>\n<div><\/div>\n<\/div>\n<\/div>\n<article class=\"_2rhmJa\">\n<h1>\u4ec0\u4e48\u662fDaemon\uff08\u5b88\u62a4\u8fdb\u7a0b\uff09<\/h1>\n<h2>Service<\/h2>\n<p>\u5e38\u9a7b\u518d\u5185\u5b58\u4e2d\u7684\u8fdb\u7a0b\uff0c\u53ef\u4ee5\u63d0\u4f9b\u4e00\u4e9b\u7cfb\u7edf\u6216\u8005\u7f51\u7edc\u7684\u529f\u80fd\uff0c\u90a3\u5c31\u662f\u670d\u52a1Service\u3002<\/p>\n<h2>Daemon \u4e0e Service \u7684\u8054\u7cfb\u4e0e\u533a\u522b<\/h2>\n<p>\u7cfb\u7edf\u4e3a\u4e86\u67d0\u4e9b\u529f\u80fd\u5fc5\u987b\u8981\u63d0\u4f9b\u4e00\u4e9b\u670d\u52a1service\uff0c\u4f46\u662fservice\u7684\u63d0\u4f9b\u603b\u662f\u9700\u8981\u8fdb\u7a0b\u7684\u8fd0\u884c\uff0c\u6240\u4ee5\u5b9e\u73b0\u8fd9\u4e2aservice\u7684\u7a0b\u5e8f\u5c31\u79f0\u4e3adaemon\u3002<\/p>\n<ul>\n<li>service \u4e0e daemon \u4e0d\u7528\u7279\u522b\u533a\u5206\u3002<\/li>\n<\/ul>\n<h2>Daemon \u7684\u4e3b\u8981\u5206\u7c7b<\/h2>\n<h3>stand_alone<\/h3>\n<p>\u8fd9\u79cddaemon\u53ef\u4ee5\u81ea\u884c\u5355\u72ec\u542f\u52a8\u670d\u52a1\u3002 \u5e38\u89c1\u7684\u5982www\u670d\u52a1\u7684daemon(httpd), FTP\u7684daemon(vsftpd)\u3002\u3002\u3002<\/p>\n<h3>\u88absuper daemon\u7ba1\u7406<\/h3>\n<p>Super daemon\u662f\u4e00\u4e2a\u7279\u6b8a\u7684daemon\uff0c \u8d1f\u8d23\u7ba1\u7406\u5176\u4ed6daemon\u7684\u542f\u52a8\u4e0e\u5426\u3002\u5982telnet\u5c31\u53d7super daemon \u7ba1\u7406\u3002<\/p>\n<h1>Linux\u670d\u52a1\u7684\u7ba1\u7406<\/h1>\n<h2>\u670d\u52a1\u4e0e\u7aef\u53e3\u7684\u5bf9\u5e94<\/h2>\n<p>\u901a\u8fc7\u8bbe\u7f6e \/etc\/services \u8ba9\u67d0\u4e00\u4e2a\u670d\u52a1\u4e0e\u7aef\u53e3\u53f7\u5bf9\u5e94\u3002<\/p>\n<div class=\"_2Uzcx_\"><button class=\"VJbwyy\" type=\"button\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><i class=\"anticon anticon-copy\" aria-label=\"icon: copy\"><\/i><\/button><\/p>\n<pre class=\"line-numbers  language-swift\"><code class=\"  language-swift\">daemon name   port<span class=\"token operator\">\/<\/span><span class=\"token keyword\">protocol<\/span>       notes\r\nftp         <span class=\"token number\">21<\/span><span class=\"token operator\">\/<\/span>tcp      \r\nhttp        <span class=\"token number\">80<\/span><span class=\"token operator\">\/<\/span>tcp\r\nhttp        <span class=\"token number\">80<\/span><span class=\"token operator\">\/<\/span>udp           \r\n<\/code><\/pre>\n<\/div>\n<h2>daemon \u7684\u542f\u52a8<\/h2>\n<h3>stand alone daemon \u7684\u542f\u52a8<\/h3>\n<ul>\n<li>\/etc\/init.d\/* \u5b58\u653e\u4e86\u5404\u79cd\u670d\u52a1\u7684\u542f\u52a8\u811a\u672c\u53ef\u4ee5\u901a\u8fc7\u5b83\u4eec\u6765\u542f\u52a8\u67d0\u4e00\u4e2a\u670d\u52a1<\/li>\n<\/ul>\n<div class=\"_2Uzcx_\"><button class=\"VJbwyy\" type=\"button\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><i class=\"anticon anticon-copy\" aria-label=\"icon: copy\"><\/i><\/button><\/p>\n<pre class=\"line-numbers  language-kotlin\"><code class=\"  language-kotlin\">sudo <span class=\"token operator\">\/<\/span>etc<span class=\"token operator\">\/<\/span><span class=\"token keyword\">init<\/span><span class=\"token punctuation\">.<\/span>d<span class=\"token operator\">\/<\/span>sshd <span class=\"token punctuation\">[<\/span>start<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">[<\/span>stop<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">[<\/span>restart<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">[<\/span>status<span class=\"token punctuation\">]<\/span>\r\n<\/code><\/pre>\n<\/div>\n<ul>\n<li>\u8fd8\u53ef\u4ee5\u901a\u8fc7service \u542f\u52a8<\/li>\n<\/ul>\n<div class=\"_2Uzcx_\"><button class=\"VJbwyy\" type=\"button\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><i class=\"anticon anticon-copy\" aria-label=\"icon: copy\"><\/i><\/button><\/p>\n<pre class=\"line-numbers  language-css\"><code class=\"  language-css\">service daemonName [start][stop][restart][status]\r\n<\/code><\/pre>\n<\/div>\n<h3>super daemon \u4e0e \u5b83\u6240\u7ba1\u7406\u7684 daemon\u7684\u542f\u52a8<\/h3>\n<ul>\n<li>super daemon \u672c\u8eab\u4e5f\u662f\u4e00\u4e2a stand alone \uff0c \u6240\u4ee5\u5b83\u7684\u542f\u52a8\u548c\u4e4b\u524d\u4e00\u6837\u3002 \u4f46\u662f\u4ed6\u6240\u7ba1\u7406\u7684daemon\u5c31\u4e0d\u662f\u8fd9\u6837\u505a\u4e86\uff0c \u5fc5\u987b\u8981\u5728\u914d\u7f6e\u6587\u4ef6\u4e2d\u8bbe\u7f6e\u8be5daemon\u3002 \u914d\u7f6e\u6587\u4ef6\u5c31\u662f \/etc\/xinetd.d\/* \u4e2d\u7684\u6587\u4ef6\u3002<\/li>\n<\/ul>\n<p>\u91cc\u9762\u53ef\u4ee5\u8bbe\u7f6e\u5f88\u591a\u53c2\u6570\u5982\uff1a<\/p>\n<p>\u200b \u542f\u52a8\u4e0e\u5426\uff0c \u6bcf\u79d2\u6700\u5927\u8fde\u63a5\u6570\uff0c \u53cd\u5411\u4ee3\u7406\uff0c \u4ee5\u53ca\u8bbe\u7f6e\u4e00\u4e9b\u7b80\u5355\u7684\u9632\u706b\u5899\u529f\u80fd\uff01<\/p>\n<ul>\n<li>\u5982\u679c\u5728 \/etc\/xinetd.d\/\u4e2d\u6ca1\u6709\u8be5\u670d\u52a1\u7684\u914d\u7f6e\uff0c \u5219\u542f\u7528 \/etc\/xinetd.conf \u4e3a\u9ed8\u8ba4\u914d\u7f6e\u3002<\/li>\n<\/ul>\n<h2>\u670d\u52a1\u7684\u9632\u706b\u5899\u7ba1\u7406<\/h2>\n<h3>\u54ea\u4e9b\u53ef\u4ee5\u7528\/etc\/hosts.allow\/deny \u6765\u7ba1\u7406<\/h3>\n<p>\u4efb\u4f55\u4ee5xinetd \u7ba1\u7406\u7684\u670d\u52a1\uff0c \u6216\u8005\u652f\u6301 TCP Wrappers \u51fd\u6570\u7684\u529f\u80fd\u7684\u670d\u52a1\uff0c\u90fd\u53ef\u4ee5\u901a\u8fc7 \/etc\/hosts.allo \/etc\/hosts.deny \u6765\u8bbe\u7f6e\u9632\u706b\u5899\u3002<\/p>\n<ul>\n<li>lld\u00a0<code>which sshd httpd<\/code>\u00a0\uff1a \u67e5\u770b\u662f\u5426\u652f\u6301 libwrap.so.0<\/li>\n<\/ul>\n<p>\u7ed3\u679c sshd\u652f\u6301\uff0c httpd \u4e0d\u652f\u6301\uff01<\/p>\n<h3>\u914d\u7f6e\u6587\u4ef6\u7684\u8bed\u6cd5<\/h3>\n<div class=\"_2Uzcx_\"><button class=\"VJbwyy\" type=\"button\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><i class=\"anticon anticon-copy\" aria-label=\"icon: copy\"><\/i><\/button><\/p>\n<pre class=\"line-numbers  language-undefined\"><code class=\"  language-undefined\">\u670d\u52a1                \uff1a              IP                 \uff1a    \u64cd\u4f5c\r\nsshd                        223.1.3.0\/24                      deny\r\n<\/code><\/pre>\n<\/div>\n<h3>TCP Wrappers \u7684\u9ad8\u7ea7\u64cd\u4f5c<\/h3>\n<ul>\n<li>spawn \uff08action\uff09 \uff1a \u5229\u7528\u540e\u7eed\u7684shell \u8fdb\u884c\u989d\u5916\u7684\u64cd\u4f5c\uff01<\/li>\n<li>twist (action) \uff1a \u7acb\u523b\u4ee5\u540e\u7eed\u7684\u547d\u4ee4\u8fdb\u884c\uff0c**\u4e14\u6267\u884c\u7ed3\u675f\u540e\u7ec8\u6b62\u8be5\u6b21\u94fe\u63a5\u8bf7\u6c42 **<\/li>\n<\/ul>\n<p>\u4f8b\u5b50\uff1a<\/p>\n<ul>\n<li>\u5229\u7528safe_finger \u53bb\u8ddf\u8e2a\u51fa\u5bf9\u65b9\u7684\u4e3b\u673a\u7684\u4fe1\u606f<\/li>\n<li>\u5c06\u8be5\u803f\u603b\u5230\u7684\u7ed3\u679c\u4ee5Email\u7684\u65b9\u5f0f\u5bc4\u7ed9\u672c\u673a\u7684root<\/li>\n<li>\u5728\u5bf9\u65b9\u5c4f\u5e55\u4e0a\u663e\u793a\u4e0d\u53ef\u767b\u9646\u4e14\u8b66\u544a\u4ed6\u5df2\u7ecf\u88ab\u8bb0\u5f55\u7684\u4fe1\u606f\u3002<\/li>\n<\/ul>\n<p>\u7531\u4e8e\u662f\u963b\u6321\u7684\u673a\u5236\uff0c \u56e0\u6b64\u8fd9\u4e2aspawn \u4e0e twist \u7684\u64cd\u4f5c \u5927\u591a\u662f\u5378\u8f7d \/etc\/hosts.deny \u6587\u4ef6\u4e2d\u7684\u3002 \u6211\u4eec\u5c06\u4e0a\u8ff0\u7684\u64cd\u4f5c\u5199\u6210\u7c7b\u4f3c\u5982\u4e0b\uff1a<\/p>\n<p>sshd : ALL : spawn ( echo &#8220;security notice from host&#8221;) ; echo ; \/usr\/sbin\/safe_finger @%h) | \\<\/p>\n<p>\/bin\/mail -s &#8220;%d-%h security&#8221; root &amp;\u00a0<strong>: twist (\/bin\/echo -e &#8220;\\n\\nWARNING connection not allowed. \\n\\n&#8221;)<\/strong><\/p>\n<h2>\u7cfb\u7edf\u5f00\u542f\u7684\u670d\u52a1<\/h2>\n<h3>\u67e5\u8be2<\/h3>\n<div class=\"_2Uzcx_\"><button class=\"VJbwyy\" type=\"button\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><i class=\"anticon anticon-copy\" aria-label=\"icon: copy\"><\/i><\/button><\/p>\n<pre class=\"line-numbers  language-bash\"><code class=\"  language-bash\">netstat -tunlp  ## \u914d\u5408grep\r\nservice  --status-all\r\nps    -aux   ## \u914d\u5408grep\r\n<\/code><\/pre>\n<\/div>\n<h3>\u8bbe\u7f6e\u5f00\u673a\u542f\u52a8\u67d0\u4e2a\u670d\u52a1<\/h3>\n<p>\u5c0f\u63d2\u53d9\uff1a Linux \u5f00\u673a\u8fc7\u7a0b\uff1a<\/p>\n<ul>\n<li>\u6253\u5f00\u7535\u6e90\uff0c \u5f00\u59cb\u8bfb\u53d6BIOS\uff0c \u8fdb\u884c\u786c\u4ef6\u81ea\u6211\u6d4b\u8bd5\u3002<\/li>\n<li>\u901a\u8fc7 BIOS \u53d6\u5f97\u7b2c\u4e00\u4e2a\u53ef\u5f00\u673a\u7684\u8bbe\u5907\uff0c \u8bfb\u53d6 MBR \u53d6\u5f97\u542f\u52a8\u88c5\u8f7d\u7a0b\u5e8f<\/li>\n<li>\u901a\u8fc7\u542f\u52a8\u88c5\u5728\u7a0b\u5e8f\u7684\u8bbe\u7f6e\uff0c \u53d6\u5f97kernel \u5e76\u52a0\u8f7d\u5185\u5b58\u4e14\u76d1\u6d4b\u7cfb\u7edf\u786c\u4ef6<\/li>\n<li>\u5185\u6838\u4e3b\u52a8\u8c03\u7528init\u8fdb\u7a0b<\/li>\n<li>init \u8fdb\u884c\u7cfb\u7edf\u521d\u59cb\u5316 (\/etc\/rc.d\/rc.sysinit)<\/li>\n<li>\u4ee5\u53cainit \u7684\u8bbe\u7f6e\u8fdb\u884cdaemonstart (\/etc\/rc.d\/rc[0-6].d\/*) \u3002<\/li>\n<li>\u52a0\u8f7d\u672c\u673a\u8bbe\u7f6e \uff08\/etc\/rc.d\/rc.local\uff09<\/li>\n<\/ul>\n<h3>chkconfig<\/h3>\n<div class=\"_2Uzcx_\"><button class=\"VJbwyy\" type=\"button\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><i class=\"anticon anticon-copy\" aria-label=\"icon: copy\"><\/i><\/button><\/p>\n<pre class=\"line-numbers  language-csharp\"><code class=\"  language-csharp\">chkconfig  <span class=\"token operator\">--<\/span>list  <span class=\"token punctuation\">[<\/span>\u670d\u52a1\u540d\u79f0<span class=\"token punctuation\">]<\/span>    \r\n<span class=\"token preprocessor property\">## \u5217\u51fa\u670d\u52a1\u5728\u5404\u4e2a\u8fd0\u884c\u7ea7\u522b\u4e0b\u7684\u5f00\u673a\u542f\u52a8\u4e0e\u5426<\/span>\r\n\r\nchkconfig  <span class=\"token operator\">--<\/span>level <span class=\"token class-name\">N<\/span>  serviceD  on<span class=\"token operator\">\/<\/span>off<\/code><\/pre>\n<\/div>\n<\/article>\n","protected":false},"excerpt":{"rendered":"<p>\u539f\u6587\u5730\u5740 \u4ec0\u4e48\u662fDaemon\uff08\u5b88\u62a4\u8fdb\u7a0b\uff09<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[],"tags":[117],"class_list":["post-5031","post","type-post","status-publish","format-standard","hentry","tag-01-linux"],"_links":{"self":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/5031","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/comments?post=5031"}],"version-history":[{"count":0,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/5031\/revisions"}],"wp:attachment":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/media?parent=5031"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/categories?post=5031"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/tags?post=5031"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}