{"id":16869,"date":"2024-11-18T10:04:59","date_gmt":"2024-11-18T02:04:59","guid":{"rendered":"https:\/\/fwq.ai\/blog\/16869\/"},"modified":"2024-11-18T10:04:59","modified_gmt":"2024-11-18T02:04:59","slug":"%e4%bc%98%e5%8c%96%e4%bd%a0%e7%9a%84%e6%9c%8d%e5%8a%a1%e5%99%a8%e5%ae%89%e5%85%a8%e6%80%a7%ef%bc%9a%e8%bf%995%e4%b8%aalinux%e5%91%bd%e4%bb%a4","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/16869\/","title":{"rendered":"\u4f18\u5316\u4f60\u7684\u670d\u52a1\u5668\u5b89\u5168\u6027\uff1a\u8fd95\u4e2aLinux\u547d\u4ee4"},"content":{"rendered":"

\"\u4f18\u5316\u4f60\u7684\u670d\u52a1\u5668\u5b89\u5168\u6027\uff1a\u8fd95\u4e2aLinux\u547d\u4ee4\u63d2\u56fe\"<\/p>\n

\u4f18\u5316\u4f60\u7684\u670d\u52a1\u5668\u5b89\u5168\u6027\uff1a\u8fd95\u4e2aLinux\u547d\u4ee4<\/p>\n

\u968f\u7740\u79d1\u6280\u7684\u4e0d\u65ad\u53d1\u5c55\u548c\u4e92\u8054\u7f51\u7684\u666e\u53ca\uff0c\u670d\u52a1\u5668\u7684\u5b89\u5168\u6027\u53d8\u5f97\u8d8a\u6765\u8d8a\u91cd\u8981\u3002\u4e3a\u4e86\u4fdd\u62a4\u670d\u52a1\u5668\u514d\u53d7\u6f5c\u5728\u7684\u653b\u51fb\u548c\u6076\u610f\u5165\u4fb5\uff0c\u6211\u4eec\u9700\u8981\u91c7\u53d6\u4e00\u4e9b\u63aa\u65bd\u6765\u52a0\u5f3a\u670d\u52a1\u5668\u7684\u5b89\u5168\u6027\u3002\u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u4eec\u5c06\u4ecb\u7ecd5\u4e2a\u5e38\u7528\u7684Linux\u547d\u4ee4\uff0c\u53ef\u4ee5\u5e2e\u52a9\u4f60\u4f18\u5316\u670d\u52a1\u5668\u7684\u5b89\u5168\u6027\u3002<\/p>\n

    \n
  1. \u9632\u706b\u5899\u914d\u7f6e\uff1aiptables<\/li>\n<\/ol>\n

    iptables\u662f\u4e00\u4e2a\u5f00\u6e90\u7684\u9632\u706b\u5899\u5de5\u5177\uff0c\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u7ba1\u7406\u670d\u52a1\u5668\u7684\u7f51\u7edc\u6d41\u91cf\u3002\u901a\u8fc7\u914d\u7f6eiptables\u89c4\u5219\uff0c\u6211\u4eec\u53ef\u4ee5\u9650\u5236\u8bbf\u95ee\u670d\u52a1\u5668\u7684IP\u5730\u5740\u3001\u7aef\u53e3\u548c\u534f\u8bae\uff0c\u4ece\u800c\u9632\u6b62\u6f5c\u5728\u7684\u653b\u51fb\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684iptables\u547d\u4ee4\u793a\u4f8b\uff1a<\/p>\n

    # \u5141\u8bb8\u67d0\u4e2aIP\u5730\u5740\u8bbf\u95ee\u670d\u52a1\u5668\u7684\u6307\u5b9a\u7aef\u53e3\niptables -A INPUT -s \u5141\u8bb8\u7684IP\u5730\u5740 -p tcp --dport \u5141\u8bb8\u7684\u7aef\u53e3 -j ACCEPT\n\n# \u7981\u6b62\u67d0\u4e2aIP\u5730\u5740\u8bbf\u95ee\u670d\u52a1\u5668\u7684\u6307\u5b9a\u7aef\u53e3\niptables -A INPUT -s \u7981\u6b62\u7684IP\u5730\u5740 -p tcp --dport \u7981\u6b62\u7684\u7aef\u53e3 -j DROP\n\n# \u67e5\u770b\u5f53\u524d\u7684iptables\u89c4\u5219\niptables -L<\/pre>\n
      \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
      \n
    1. \u5b89\u5168\u767b\u5f55\uff1aSSH<\/li>\n<\/ol>\n
      SSH\uff08Secure Shell\uff09\u662f\u4e00\u79cd\u52a0\u5bc6\u7684\u7f51\u7edc\u534f\u8bae\uff0c\u53ef\u4ee5\u5b89\u5168\u5730\u767b\u5f55\u8fdc\u7a0b\u670d\u52a1\u5668\u3002\u901a\u8fc7\u4f7f\u7528SSH\uff0c\u6211\u4eec\u53ef\u4ee5\u9632\u6b62\u6076\u610f\u7528\u6237\u901a\u8fc7\u66b4\u529b\u7834\u89e3\u5bc6\u7801\u6216\u7f51\u7edc\u76d1\u542c\u7b49\u65b9\u5f0f\u83b7\u53d6\u670d\u52a1\u5668\u7684\u8bbf\u95ee\u6743\u9650\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684SSH\u547d\u4ee4\u793a\u4f8b\uff1a<\/p>\n
      # \u66f4\u6539SSH\u9ed8\u8ba4\u7aef\u53e3\uff08\u9ed8\u8ba4\u4e3a22\uff09\uff0c\u589e\u52a0\u5b89\u5168\u6027\nvi \/etc\/ssh\/sshd_config\n# \u4fee\u6539Port 22\u4e3a\u81ea\u5b9a\u4e49\u7684\u7aef\u53e3\u53f7\n# \u4fdd\u5b58\u6587\u4ef6\u5e76\u91cd\u542fSSH\u670d\u52a1\uff1aservice sshd restart\n\n# \u7981\u7528SSH\u5bc6\u7801\u767b\u5f55\uff0c\u53ea\u5141\u8bb8\u4f7f\u7528\u5bc6\u94a5\u767b\u5f55\nvi \/etc\/ssh\/sshd_config\n# \u4fee\u6539PasswordAuthentication yes\u4e3aPasswordAuthentication no\n# \u4fdd\u5b58\u6587\u4ef6\u5e76\u91cd\u542fSSH\u670d\u52a1\uff1aservice sshd restart<\/pre>\n
        \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
        \n
      1. \u5b9a\u671f\u66f4\u65b0\uff1ayum\u6216apt-get<\/li>\n<\/ol>\n
        \u5b9a\u671f\u66f4\u65b0\u670d\u52a1\u5668\u4e0a\u7684\u64cd\u4f5c\u7cfb\u7edf\u548c\u8f6f\u4ef6\u5305\u662f\u4fdd\u6301\u670d\u52a1\u5668\u5b89\u5168\u6027\u7684\u91cd\u8981\u6b65\u9aa4\u3002\u4f7f\u7528yum\uff08CentOS\/RHEL\uff09\u6216apt-get\uff08Ubuntu\/Debian\uff09\u547d\u4ee4\uff0c\u6211\u4eec\u53ef\u4ee5\u8f7b\u677e\u5730\u66f4\u65b0\u670d\u52a1\u5668\u4e0a\u7684\u6240\u6709\u8f6f\u4ef6\u5305\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u66f4\u65b0\u547d\u4ee4\u793a\u4f8b\uff1a<\/p>\n
        # \u66f4\u65b0\u8f6f\u4ef6\u5305\u5217\u8868\nyum update \u6216 apt-get update\n\n# \u66f4\u65b0\u6240\u6709\u53ef\u7528\u7684\u8f6f\u4ef6\u5305\nyum upgrade \u6216 apt-get upgrade\n\n# \u81ea\u52a8\u66f4\u65b0\u6240\u6709\u53ef\u7528\u7684\u8f6f\u4ef6\u5305\nyum-cron \u6216 unattended-upgrades\uff08Ubuntu\/Debian\uff09<\/pre>\n
          \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
          \n
        1. \u5bc6\u7801\u7b56\u7565\uff1apasswd\u548cchage<\/li>\n<\/ol>\n
          \u4e3a\u4e86\u9632\u6b62\u6076\u610f\u7528\u6237\u731c\u6d4b\u5bc6\u7801\u548c\u66b4\u529b\u7834\u89e3\u5bc6\u7801\uff0c\u6211\u4eec\u5e94\u8be5\u91c7\u7528\u5f3a\u5bc6\u7801\u7b56\u7565\uff0c\u5e76\u5b9a\u671f\u66f4\u6539\u5bc6\u7801\u3002\u4f7f\u7528passwd\u547d\u4ee4\uff0c\u6211\u4eec\u53ef\u4ee5\u66f4\u6539\u7528\u6237\u7684\u5bc6\u7801\u3002\u800cchage\u547d\u4ee4\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u8bbe\u7f6e\u5bc6\u7801\u8fc7\u671f\u7b56\u7565\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u5bc6\u7801\u7b56\u7565\u547d\u4ee4\u793a\u4f8b\uff1a<\/p>\n
          # \u66f4\u6539\u7528\u6237\u7684\u5bc6\u7801\npasswd \u7528\u6237\u540d\n\n# \u8bbe\u7f6e\u5bc6\u7801\u8fc7\u671f\u5929\u6570\uff08\u572890\u5929\u540e\u5f3a\u5236\u66f4\u6539\uff09\nchage -M 90 \u7528\u6237\u540d<\/pre>\n
            \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
            \n
          1. \u65e5\u5fd7\u5206\u6790\uff1agrep\u548ctail<\/li>\n<\/ol>\n
            \u65e5\u5fd7\u6587\u4ef6\u662f\u670d\u52a1\u5668\u5b89\u5168\u6027\u548c\u8fd0\u884c\u72b6\u51b5\u76d1\u63a7\u7684\u91cd\u8981\u6570\u636e\u6765\u6e90\u3002\u901a\u8fc7\u4f7f\u7528grep\u548ctail\u547d\u4ee4\uff0c\u6211\u4eec\u53ef\u4ee5\u5b9e\u65f6\u67e5\u770b\u548c\u5206\u6790\u670d\u52a1\u5668\u7684\u65e5\u5fd7\u6587\u4ef6\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u65e5\u5fd7\u5206\u6790\u547d\u4ee4\u793a\u4f8b\uff1a<\/p>\n
            # \u67e5\u770b\u7279\u5b9a\u5173\u952e\u8bcd\u7684\u65e5\u5fd7\uff08\u4f8b\u5982\uff0c\u67e5\u627eSSH\u767b\u5f55\u5931\u8d25\u7684\u8bb0\u5f55\uff09\ngrep \"Failed password\" \/var\/log\/auth.log\n\n# \u5b9e\u65f6\u67e5\u770b\u65e5\u5fd7\u6587\u4ef6\u7684\u672b\u5c3e\u5185\u5bb9\ntail -f \/var\/log\/syslog<\/pre>\n
              \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
            \u901a\u8fc7\u5b66\u4e60\u548c\u4e86\u89e3\u8fd9\u4e9bLinux\u547d\u4ee4\uff0c\u5e76\u5728\u670d\u52a1\u5668\u4e0a\u5e94\u7528\u5b83\u4eec\uff0c\u4f60\u53ef\u4ee5\u663e\u8457\u63d0\u9ad8\u670d\u52a1\u5668\u7684\u5b89\u5168\u6027\u3002\u4f46\u662f\u8bf7\u8bb0\u4f4f\uff0c\u670d\u52a1\u5668\u5b89\u5168\u6027\u662f\u4e00\u4e2a\u6301\u7eed\u7684\u8fc7\u7a0b\uff0c\u9700\u8981\u5b9a\u671f\u68c0\u67e5\u548c\u66f4\u65b0\u3002\u5e0c\u671b\u672c\u6587\u5bf9\u4f60\u4f18\u5316\u670d\u52a1\u5668\u5b89\u5168\u6027\u6709\u6240\u5e2e\u52a9\u3002<\/p>\n
            (\u6ce8\uff1a\u4ee5\u4e0a\u793a\u4f8b\u547d\u4ee4\u4ec5\u4f9b\u53c2\u8003\uff0c\u5177\u4f53\u7684\u547d\u4ee4\u548c\u53c2\u6570\u53ef\u80fd\u56e0\u64cd\u4f5c\u7cfb\u7edf\u548c\u8f6f\u4ef6\u7248\u672c\u800c\u6709\u6240\u4e0d\u540c\uff0c\u8bf7\u6839\u636e\u5b9e\u9645\u60c5\u51b5\u8fdb\u884c\u8c03\u6574\u3002)<\/p>\n
            \u4ee5\u4e0a\u5c31\u662f\u4f18\u5316\u4f60\u7684\u670d\u52a1\u5668\u5b89\u5168\u6027\uff1a\u8fd95\u4e2aLinux\u547d\u4ee4\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
            \u4f18\u5316\u4f60\u7684\u670d\u52a1\u5668\u5b89\u5168\u6027\uff1a\u8fd95\u4e2aLinux\u547d\u4ee4 \u968f\u7740\u79d1\u6280\u7684\u4e0d\u65ad\u53d1\u5c55\u548c\u4e92\u8054\u7f51\u7684\u666e\u53ca\uff0c\u670d\u52a1\u5668\u7684\u5b89\u5168\u6027\u53d8\u5f97\u8d8a\u6765\u8d8a\u91cd\u8981\u3002\u4e3a\u4e86\u4fdd\u62a4\u670d\u52a1\u5668\u514d\u53d7\u6f5c\u5728\u7684\u653b\u51fb\u548c\u6076\u610f\u5165\u4fb5\uff0c\u6211\u4eec\u9700\u8981\u91c7\u53d6\u4e00\u4e9b\u63aa\u65bd\u6765\u52a0\u5f3a\u670d\u52a1\u5668\u7684\u5b89\u5168\u6027\u3002\u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u4eec\u5c06\u4ecb\u7ecd5\u4e2a\u5e38\u7528\u7684Linux\u547d\u4ee4\uff0c\u53ef\u4ee5\u5e2e\u52a9\u4f60\u4f18\u5316\u670d\u52a1\u5668\u7684\u5b89\u5168\u6027\u3002 \u9632\u706b\u5899\u914d\u7f6e\uff1aiptables iptables\u662f\u4e00\u4e2a\u5f00\u6e90\u7684\u9632\u706b\u5899\u5de5\u5177\uff0c\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u7ba1\u7406\u670d\u52a1\u5668\u7684\u7f51\u7edc\u6d41\u91cf\u3002\u901a\u8fc7\u914d\u7f6eiptables\u89c4\u5219\uff0c\u6211\u4eec\u53ef\u4ee5\u9650\u5236\u8bbf\u95ee\u670d\u52a1\u5668\u7684IP\u5730\u5740\u3001\u7aef\u53e3\u548c\u534f\u8bae\uff0c\u4ece\u800c\u9632\u6b62\u6f5c\u5728\u7684\u653b\u51fb\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684iptables\u547d\u4ee4\u793a\u4f8b\uff1a # \u5141\u8bb8\u67d0\u4e2aIP\u5730\u5740\u8bbf\u95ee\u670d\u52a1\u5668\u7684\u6307\u5b9a\u7aef\u53e3 iptables -A INPUT -s \u5141\u8bb8\u7684IP\u5730\u5740 -p tcp –dport \u5141\u8bb8\u7684\u7aef\u53e3 -j ACCEPT # \u7981\u6b62\u67d0\u4e2aIP\u5730\u5740\u8bbf\u95ee\u670d\u52a1\u5668\u7684\u6307\u5b9a\u7aef\u53e3 iptables -A INPUT -s \u7981\u6b62\u7684IP\u5730\u5740 -p tcp –dport \u7981\u6b62\u7684\u7aef\u53e3 -j DROP # \u67e5\u770b\u5f53\u524d\u7684iptables\u89c4\u5219 iptables -L \u767b\u5f55\u540e\u590d\u5236 \u5b89\u5168\u767b\u5f55\uff1aSSH SSH\uff08Secure Shell\uff09\u662f\u4e00\u79cd\u52a0\u5bc6\u7684\u7f51\u7edc\u534f\u8bae\uff0c\u53ef\u4ee5\u5b89\u5168\u5730\u767b\u5f55\u8fdc\u7a0b\u670d\u52a1\u5668\u3002\u901a\u8fc7\u4f7f\u7528SSH\uff0c\u6211\u4eec\u53ef\u4ee5\u9632\u6b62\u6076\u610f\u7528\u6237\u901a\u8fc7\u66b4\u529b\u7834\u89e3\u5bc6\u7801\u6216\u7f51\u7edc\u76d1\u542c\u7b49\u65b9\u5f0f\u83b7\u53d6\u670d\u52a1\u5668\u7684\u8bbf\u95ee\u6743\u9650\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684SSH\u547d\u4ee4\u793a\u4f8b\uff1a # \u66f4\u6539SSH\u9ed8\u8ba4\u7aef\u53e3\uff08\u9ed8\u8ba4\u4e3a22\uff09\uff0c\u589e\u52a0\u5b89\u5168\u6027 vi \/etc\/ssh\/sshd_config # \u4fee\u6539Port 22\u4e3a\u81ea\u5b9a\u4e49\u7684\u7aef\u53e3\u53f7 # \u4fdd\u5b58\u6587\u4ef6\u5e76\u91cd\u542fSSH\u670d\u52a1\uff1aservice sshd restart # \u7981\u7528SSH\u5bc6\u7801\u767b\u5f55\uff0c\u53ea\u5141\u8bb8\u4f7f\u7528\u5bc6\u94a5\u767b\u5f55 vi \/etc\/ssh\/sshd_config # \u4fee\u6539PasswordAuthentication […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-16869","post","type-post","status-publish","format-standard","hentry","category-os"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/16869","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=16869"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/16869\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=16869"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=16869"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=16869"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}