{"id":211569,"date":"2023-12-22T10:09:26","date_gmt":"2023-12-22T02:09:26","guid":{"rendered":"https:\/\/www.idc.net\/help\/211569\/"},"modified":"2023-12-22T10:09:26","modified_gmt":"2023-12-22T02:09:26","slug":"linux-%e6%9c%8d%e5%8a%a1%e5%99%a8%e5%ae%89%e5%85%a8%e7%ad%96%e7%95%a5%e6%8a%80%e5%b7%a7%ef%bc%9a%e5%86%85%e6%a0%b8%e5%8a%a0%e5%9b%ba","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/211569\/","title":{"rendered":"Linux \u670d\u52a1\u5668\u5b89\u5168\u7b56\u7565\u6280\u5de7\uff1a\u5185\u6838\u52a0\u56fa"},"content":{"rendered":"<p><title id=\"linux-%e6%9c%8d%e5%8a%a1%e5%99%a8%e5%ae%89%e5%85%a8%e7%ad%96%e7%95%a5%e6%8a%80%e5%b7%a7%ef%bc%9a%e5%86%85%e6%a0%b8%e5%8a%a0%e5%9b%ba-CCPNgbBOkq\">Linux \u670d\u52a1\u5668\u5b89\u5168\u7b56\u7565\u6280\u5de7\uff1a\u5185\u6838\u52a0\u56fa<\/title><\/p>\n<h1 id=\"linux-%e6%9c%8d%e5%8a%a1%e5%99%a8%e5%ae%89%e5%85%a8%e7%ad%96%e7%95%a5%e6%8a%80%e5%b7%a7%ef%bc%9a%e5%86%85%e6%a0%b8%e5%8a%a0%e5%9b%ba-CCPNgbBOkq\">Linux \u670d\u52a1\u5668\u5b89\u5168\u7b56\u7565\u6280\u5de7\uff1a\u5185\u6838\u52a0\u56fa<\/h1>\n<h2 id=\"%e5%bc%95%e8%a8%80-CCPNgbBOkq\">\u5f15\u8a00<\/h2>\n<p>\u5728\u5f53\u4eca\u6570\u5b57\u5316\u65f6\u4ee3\uff0c\u670d\u52a1\u5668\u5b89\u5168\u5bf9\u4e8e\u4efb\u4f55\u4f01\u4e1a\u6216\u4e2a\u4eba\u6765\u8bf4\u90fd\u662f\u81f3\u5173\u91cd\u8981\u7684\u3002Linux \u4f5c\u4e3a\u4e00\u79cd\u5e7f\u6cdb\u4f7f\u7528\u7684\u64cd\u4f5c\u7cfb\u7edf\uff0c\u5176\u5b89\u5168\u6027\u5907\u53d7\u5173\u6ce8\u3002\u5185\u6838\u662f Linux \u7cfb\u7edf\u7684\u6838\u5fc3\u7ec4\u4ef6\uff0c\u56e0\u6b64\u52a0\u56fa\u5185\u6838\u662f\u4fdd\u62a4\u670d\u52a1\u5668\u514d\u53d7\u653b\u51fb\u7684\u91cd\u8981\u4e00\u73af\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u4e00\u4e9b Linux \u670d\u52a1\u5668\u5185\u6838\u52a0\u56fa\u7684\u6280\u5de7\u548c\u7b56\u7565\u3002<\/p>\n<h2 id=\"1-%e6%9b%b4%e6%96%b0%e5%86%85%e6%a0%b8-CCPNgbBOkq\">1. \u66f4\u65b0\u5185\u6838<\/h2>\n<p>\u4fdd\u6301\u5185\u6838\u7248\u672c\u7684\u6700\u65b0\u72b6\u6001\u662f\u786e\u4fdd\u670d\u52a1\u5668\u5b89\u5168\u7684\u91cd\u8981\u6b65\u9aa4\u4e4b\u4e00\u3002\u65b0\u7248\u672c\u7684\u5185\u6838\u901a\u5e38\u5305\u542b\u5bf9\u5df2\u77e5\u6f0f\u6d1e\u548c\u5b89\u5168\u95ee\u9898\u7684\u4fee\u590d\u3002\u5b9a\u671f\u66f4\u65b0\u5185\u6838\u53ef\u4ee5\u786e\u4fdd\u670d\u52a1\u5668\u80fd\u591f\u53ca\u65f6\u83b7\u5f97\u8fd9\u4e9b\u4fee\u590d\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u68c0\u67e5\u5f53\u524d\u5185\u6838\u7248\u672c\uff1a<\/p>\n<pre><code>uname -r<\/code><\/pre>\n<p>\u7136\u540e\uff0c\u4f7f\u7528\u9002\u5408\u60a8\u7684 Linux \u53d1\u884c\u7248\u7684\u5305\u7ba1\u7406\u5668\u6765\u66f4\u65b0\u5185\u6838\u3002<\/p>\n<h2 id=\"2-%e7%a6%81%e7%94%a8%e4%b8%8d%e5%bf%85%e8%a6%81%e7%9a%84%e5%86%85%e6%a0%b8%e6%a8%a1%e5%9d%97-CCPNgbBOkq\">2. \u7981\u7528\u4e0d\u5fc5\u8981\u7684\u5185\u6838\u6a21\u5757<\/h2>\n<p>\u5185\u6838\u6a21\u5757\u662f Linux \u5185\u6838\u7684\u53ef\u52a0\u8f7d\u90e8\u5206\uff0c\u5b83\u4eec\u53ef\u4ee5\u589e\u52a0\u7cfb\u7edf\u7684\u529f\u80fd\u548c\u7075\u6d3b\u6027\u3002\u7136\u800c\uff0c\u4e0d\u5fc5\u8981\u7684\u5185\u6838\u6a21\u5757\u53ef\u80fd\u4f1a\u6210\u4e3a\u6f5c\u5728\u7684\u5b89\u5168\u98ce\u9669\u3002\u56e0\u6b64\uff0c\u5efa\u8bae\u7981\u7528\u4e0d\u9700\u8981\u7684\u5185\u6838\u6a21\u5757\u3002<\/p>\n<p>\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u5217\u51fa\u5f53\u524d\u52a0\u8f7d\u7684\u5185\u6838\u6a21\u5757\uff1a<\/p>\n<pre><code>lsmod<\/code><\/pre>\n<p>\u7136\u540e\uff0c\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u7981\u7528\u4e0d\u9700\u8981\u7684\u5185\u6838\u6a21\u5757\uff1a<\/p>\n<pre><code>sudo rmmod \u6a21\u5757\u540d<\/code><\/pre>\n<h2 id=\"3-%e9%85%8d%e7%bd%ae%e5%86%85%e6%a0%b8%e5%8f%82%e6%95%b0-CCPNgbBOkq\">3. \u914d\u7f6e\u5185\u6838\u53c2\u6570<\/h2>\n<p>\u901a\u8fc7\u914d\u7f6e\u5185\u6838\u53c2\u6570\uff0c\u53ef\u4ee5\u8fdb\u4e00\u6b65\u52a0\u56fa\u670d\u52a1\u5668\u7684\u5b89\u5168\u6027\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u89c1\u7684\u5185\u6838\u53c2\u6570\u914d\u7f6e\u5efa\u8bae\uff1a<\/p>\n<ul>\n<li>\u7981\u7528 IP \u8f6c\u53d1\uff1a<code>net.ipv4.ip_forward = 0<\/code><\/li>\n<li>\u7981\u7528 ICMP \u91cd\u5b9a\u5411\uff1a<code>net.ipv4.conf.all.accept_redirects = 0<\/code><\/li>\n<li>\u7981\u7528\u6e90\u8def\u7531\u9a8c\u8bc1\uff1a<code>net.ipv4.conf.all.rp_filter = 1<\/code><\/li>\n<li>\u9650\u5236\u6838\u5fc3\u8f6c\u50a8\u6587\u4ef6\u7684\u5927\u5c0f\uff1a<code>kernel.core_uses_pid = 1<\/code><\/li>\n<\/ul>\n<p>\u8981\u914d\u7f6e\u8fd9\u4e9b\u53c2\u6570\uff0c\u53ef\u4ee5\u7f16\u8f91 <code>\/etc\/sysctl.conf<\/code> \u6587\u4ef6\uff0c\u5e76\u6dfb\u52a0\u76f8\u5e94\u7684\u884c\u3002\u7136\u540e\uff0c\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u4f7f\u914d\u7f6e\u751f\u6548\uff1a<\/p>\n<pre><code>sudo sysctl -p<\/code><\/pre>\n<h2 id=\"4-%e4%bd%bf%e7%94%a8%e9%98%b2%e7%81%ab%e5%a2%99-CCPNgbBOkq\">4. \u4f7f\u7528\u9632\u706b\u5899<\/h2>\n<p>\u9632\u706b\u5899\u662f\u4fdd\u62a4\u670d\u52a1\u5668\u514d\u53d7\u7f51\u7edc\u653b\u51fb\u7684\u91cd\u8981\u5de5\u5177\u3002Linux \u63d0\u4f9b\u4e86\u591a\u79cd\u9632\u706b\u5899\u89e3\u51b3\u65b9\u6848\uff0c\u5982 iptables \u548c nftables\u3002\u901a\u8fc7\u914d\u7f6e\u9002\u5f53\u7684\u89c4\u5219\uff0c\u53ef\u4ee5\u9650\u5236\u8fdb\u51fa\u670d\u52a1\u5668\u7684\u7f51\u7edc\u6d41\u91cf\u3002<\/p>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528 iptables \u914d\u7f6e\u9632\u706b\u5899\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code># \u5141\u8bb8\u5df2\u5efa\u7acb\u7684\u8fde\u63a5\niptables -A INPUT -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT\niptables -A OUTPUT -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT\n\n# \u5141\u8bb8 SSH \u8fde\u63a5\niptables -A INPUT -p tcp --dport 22 -j ACCEPT\n\n# \u5141\u8bb8 HTTP \u548c HTTPS \u8fde\u63a5\niptables -A INPUT -p tcp --dport 80 -j ACCEPT\niptables -A INPUT -p tcp --dport 443 -j ACCEPT\n\n# \u9ed8\u8ba4\u62d2\u7edd\u6240\u6709\u5176\u4ed6\u8fde\u63a5\niptables -P INPUT DROP\niptables -P FORWARD DROP\niptables -P OUTPUT ACCEPT\n\n# \u4fdd\u5b58\u914d\u7f6e\niptables-save &gt; \/etc\/iptables\/rules.v4\n<\/code><\/pre>\n<p>\u8981\u4f7f\u7528\u8fd9\u4e9b\u89c4\u5219\uff0c\u53ef\u4ee5\u5c06\u5176\u4fdd\u5b58\u5230 <code>\/etc\/iptables\/rules.v4<\/code> \u6587\u4ef6\uff0c\u5e76\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u52a0\u8f7d\u89c4\u5219\uff1a<\/p>\n<pre><code>sudo iptables-restore &lt; \/etc\/iptables\/rules.v4<\/code><\/pre>\n<h2 id=\"%e7%bb%93%e8%ae%ba-CCPNgbBOkq\">\u7ed3\u8bba<\/h2>\n<p>\u901a\u8fc7\u52a0\u56fa Linux \u670d\u52a1\u5668\u7684\u5185\u6838\uff0c\u53ef\u4ee5\u63d0\u9ad8\u670d\u52a1\u5668\u7684\u5b89\u5168\u6027\u5e76\u51cf\u5c11\u6f5c\u5728\u7684\u653b\u51fb\u98ce\u9669\u3002\u672c\u6587\u4ecb\u7ecd\u4e86\u66f4\u65b0\u5185\u6838\u3001\u7981\u7528\u4e0d\u5fc5\u8981\u7684\u5185\u6838\u6a21\u5757\u3001\u914d\u7f6e\u5185\u6838\u53c2\u6570\u548c\u4f7f\u7528\u9632\u706b\u5899\u7b49\u6280\u5de7\u548c\u7b56\u7565\u3002\u901a\u8fc7\u91c7\u53d6\u8fd9\u4e9b\u63aa\u65bd\uff0c\u60a8\u53ef\u4ee5\u66f4\u597d\u5730\u4fdd\u62a4\u60a8\u7684\u670d\u52a1\u5668\u514d\u53d7\u6076\u610f\u653b\u51fb\u3002<\/p>\n<h2 id=\"summary-section-CCPNgbBOkq\">Summary Section<\/h2>\n<p>\u9999\u6e2f\u670d\u52a1\u5668\u9996\u9009\u540e\u6d6a\u4e91\uff0c\u63d0\u4f9b\u9ad8\u6027\u80fd\u3001\u53ef\u9760\u7684\u670d\u52a1\u5668\u89e3\u51b3\u65b9\u6848\u3002\u60a8\u53ef\u4ee5\u901a\u8fc7\u8bbf\u95ee<a href=\"https:\/\/idc.net\">https:\/\/idc.net<\/a>\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u9999\u6e2f\u670d\u52a1\u5668\u3001\u7f8e\u56fd\u670d\u52a1\u5668\u548c\u4e91\u670d\u52a1\u5668\u7684\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Linux \u670d\u52a1\u5668\u5b89\u5168\u7b56\u7565\u6280\u5de7\uff1a\u5185\u6838\u52a0\u56fa Linux \u670d\u52a1\u5668\u5b89\u5168\u7b56\u7565\u6280\u5de7\uff1a\u5185\u6838\u52a0\u56fa \u5f15\u8a00 \u5728\u5f53\u4eca\u6570\u5b57\u5316\u65f6\u4ee3\uff0c\u670d [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[27],"tags":[],"class_list":["post-211569","post","type-post","status-publish","format-standard","hentry","category-centos"],"_links":{"self":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/211569","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/comments?post=211569"}],"version-history":[{"count":0,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/211569\/revisions"}],"wp:attachment":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media?parent=211569"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/categories?post=211569"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/tags?post=211569"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}