\u6587\u4ef6\u4e0e\u6570\u636e\u7be1\u6539\u75d5\u8ff9<\/h3>\n

\n
• \u7cfb\u7edf\u914d\u7f6e\u6587\u4ef6\uff08\u5982\/etc\/passwd\u3001\/etc\/ssh\/sshd_config\uff09\u7684\u4fee\u6539\u65f6\u95f4\u6233\u65e0\u53d8\u66f4\u65e5\u5fd7\u652f\u6301\u3002<\/li>\n
• \u7cfb\u7edf\u76ee\u5f55\uff08\u5982\/tmp\u3001\/var\/tmp\uff09\u4e2d\u51fa\u73b0\u672a\u77e5\u53ef\u6267\u884c\u6587\u4ef6\uff0c\u6216\u540d\u79f0\u6df7\u6dc6\u7684\u9690\u85cf\u6587\u4ef6\u3002<\/li>\n
• \u65e5\u5fd7\u6587\u4ef6\u635f\u574f\u6216\u7f3a\u5931\u2014\u2014\u653b\u51fb\u8005\u5e38\u901a\u8fc7\u5220\u9664\u3001\u7be1\u6539\u65e5\u5fd7\u63a9\u76d6\u75d5\u8ff9\u3002<\/li>\n
• \u6570\u636e\u5e93 schema \u88ab\u975e\u6cd5\u4fee\u6539\uff0c\u6216\u6570\u636e\u88ab\u610f\u5916\u5bfc\u51fa\u81f3\u5916\u90e8\u5b58\u50a8\u3002<\/li>\n<\/ul>\n

  [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text css=””]<\/p>\n

  6\u4e2a\u6280\u672f\u4eba\u5458\u8ba4\u53ef\u7684\u65e5\u672c\u670d\u52a1\u5668\u5165\u4fb5\u68c0\u6d4b\u6b65\u9aa4<\/strong><\/h2>\n

  \u4ee5\u4e0b\u6b65\u9aa4\u4f18\u5148\u901a\u8fc7\u6280\u672f\u9a8c\u8bc1\u800c\u975e\u731c\u6d4b\uff0c\u5229\u7528\u7cfb\u7edf\u5185\u7f6e\u5de5\u5177\u548c\u624b\u52a8\u68c0\u67e5\u786e\u8ba4\u5165\u4fb5\u3002\u6309\u987a\u5e8f\u6267\u884c\u2014\u2014\u4ece\u5feb\u901f\u65e5\u5fd7\u626b\u63cf\u5230\u6df1\u5ea6\u6587\u4ef6\u5b8c\u6574\u6027\u5ba1\u8ba1\uff1a<\/p>\n

  \n
  1. \u5ba1\u8ba1\u8ba4\u8bc1\u65e5\u5fd7<\/strong>\u8bbf\u95ee\u7cfb\u7edf\u65e5\u5fd7\uff08\u5982\/var\/log\/auth.log\u3001\/var\/log\/secure\uff09\u8bc6\u522b\u53ef\u7591\u767b\u5f55\u884c\u4e3a\uff1a\n
     \n
     • \u4f7f\u7528 grep -i “failed” \/var\/log\/auth.log \u8fc7\u6ee4\u767b\u5f55\u5931\u8d25\u8bb0\u5f55\u2014\u2014\u91cd\u70b9\u5173\u6ce8\u5355\u4e2aIP\u7684\u653b\u51fb\u6a21\u5f0f\u3002<\/li>\n
     • \u6838\u67e5\u6765\u81ea\u672a\u6388\u6743IP\u6bb5\u6216\u975e\u5de5\u4f5c\u65f6\u95f4\u7684\u6210\u529f\u767b\u5f55\u8bb0\u5f55\u3002<\/li>\n
     • \u9a8c\u8bc1 sudo\/root \u8bbf\u95ee\u65e5\u5fd7\uff0c\u786e\u4fdd\u65e0\u975e\u6cd5\u6743\u9650\u63d0\u5347\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<\/li>\n
     • \u626b\u63cf\u672a\u6388\u6743\u8fdb\u7a0b\u4e0e\u7aef\u53e3<\/strong>\u901a\u8fc7\u547d\u4ee4\u884c\u5de5\u5177\u6620\u5c04\u8fd0\u884c\u8fdb\u7a0b\u548c\u5f00\u653e\u7aef\u53e3\uff1a\n
       \n
       • \u6267\u884c ps aux | grep -v grep \u5217\u51fa\u6240\u6709\u8fdb\u7a0b\u2014\u2014\u4e0e\u5df2\u77e5\u5e94\u7528\u53ca\u7cfb\u7edf\u8fdb\u7a0b\u4ea4\u53c9\u6bd4\u5bf9\u3002<\/li>\n
       • \u4f7f\u7528 netstat -tuln \u6216 ss -tuln \u67e5\u770b\u5f00\u653e\u7aef\u53e3\u2014\u2014\u5173\u95ed\u670d\u52a1\u65e0\u9700\u7684\u7aef\u53e3\uff08\u5982\u672a\u4f7f\u7528\u7684FTP\u6216Telnet\u7aef\u53e3\uff09\u3002<\/li>\n
       • \u6392\u67e5\u540d\u79f0\u6df7\u6dc6\u7684\u8fdb\u7a0b\uff08\u5982\u968f\u673a\u5b57\u7b26\u4e32\u6216\u6a21\u4effsshd2\u7b49\u7cfb\u7edf\u8fdb\u7a0b\u7684\u540d\u79f0\uff09\u3002<\/li>\n<\/ul>\n<\/li>\n
       • \u9a8c\u8bc1\u6587\u4ef6\u5b8c\u6574\u6027<\/strong>\u5bf9\u6bd4\u5f53\u524d\u6587\u4ef6\u54c8\u5e0c\u503c\u4e0e\u57fa\u51c6\u503c\uff0c\u68c0\u6d4b\u7be1\u6539\u884c\u4e3a\uff1a\n
         \n
         • \u4f7f\u7528 sha256sum \u751f\u6210\u5173\u952e\u6587\u4ef6\uff08\u5982Web\u670d\u52a1\u5668\u914d\u7f6e\u3001\u7cfb\u7edf\u4e8c\u8fdb\u5236\u6587\u4ef6\uff09\u7684\u54c8\u5e0c\u503c\u3002<\/li>\n
         • \u4e0e\u5907\u4efd\u6587\u4ef6\u6216\u5df2\u77e5\u6b63\u5e38\u7248\u672c\u7684\u54c8\u5e0c\u503c\u4ea4\u53c9\u9a8c\u8bc1\u2014\u2014\u4e0d\u5339\u914d\u5219\u8868\u660e\u6587\u4ef6\u88ab\u4fee\u6539\u3002<\/li>\n
         • \u4f7f\u7528 find \/ -type f -mtime -7 \u641c\u7d22\u654f\u611f\u76ee\u5f55\u4e2d\u8fd17\u5929\u521b\u5efa\u7684\u6587\u4ef6\u3002<\/li>\n<\/ul>\n<\/li>\n
         • \u68c0\u67e5\u7528\u6237\u8d26\u6237<\/strong>\u786e\u4fdd\u65e0\u975e\u6cd5\u521b\u5efa\u6216\u4fee\u6539\u7684\u7528\u6237\u8d26\u6237\uff1a\n
           \n
           • \u901a\u8fc7 cat \/etc\/passwd \u5217\u51fa\u6240\u6709\u7528\u6237\u8d26\u6237\u2014\u2014\u5220\u9664\u4e0e\u56e2\u961f\u65e0\u5173\u7684\u8d26\u6237\u3002<\/li>\n
           • \u6392\u67e5\u5177\u6709UID 0\uff08root\u6743\u9650\uff09\u4f46\u4e0d\u5e94\u62e5\u6709\u7ba1\u7406\u5458\u6743\u9650\u7684\u7528\u6237\u3002<\/li>\n
           • \u9a8c\u8bc1\u5bc6\u7801\u8fc7\u671f\u7b56\u7565\u548c\u590d\u6742\u5ea6\u8bbe\u7f6e\uff0c\u6392\u9664\u5f31\u51ed\u8bc1\u98ce\u9669\u3002<\/li>\n<\/ul>\n<\/li>\n
           • \u626b\u63cf\u6076\u610f\u4ee3\u7801\u4e0e\u540e\u95e8<\/strong>\u5b9a\u5411\u626b\u63cf\u8bc6\u522b\u6076\u610f\u8f6f\u4ef6\u6216\u9690\u85cf\u63a5\u5165\u70b9\uff1a\n
             \n
             • \u4f7f\u7528\u8f7b\u91cf\u5f00\u6e90\u626b\u63cf\u5de5\u5177\u68c0\u6d4brootkit\u548c\u6728\u9a6c\u2014\u2014\u91cd\u70b9\u5173\u6ce8\u5185\u5b58\u548c\u78c1\u76d8\u626b\u63cf\u3002<\/li>\n
             • \u68c0\u67e5SSH\u6388\u6743\u5bc6\u94a5\u6587\u4ef6\uff08authorized_keys\uff09\uff0c\u6392\u67e5\u7528\u4e8e\u540e\u95e8\u8bbf\u95ee\u7684\u672a\u77e5\u516c\u94a5\u3002<\/li>\n
             • \u901a\u8fc7 crontab -l \u67e5\u770b\u5b9a\u65f6\u4efb\u52a1\uff0c\u6392\u9664\u975e\u6cd5\u8ba1\u5212\u811a\u672c\uff08\u5982\u8fd0\u884c\u6076\u610f\u8f6f\u4ef6\u7684\u811a\u672c\uff09\u3002<\/li>\n<\/ul>\n<\/li>\n
             • \u5206\u6790\u8de8\u5883\u6d41\u91cf<\/strong>\u7ed3\u5408\u65e5\u672c\u670d\u52a1\u5668\u7684\u8de8\u5883\u5e94\u7528\u573a\u666f\uff0c\u5ba1\u8ba1\u7f51\u7edc\u6d41\u91cf\u5f02\u5e38\uff1a\n
               \n
               • \u4f7f\u7528 tcpdump \u6216 Wireshark \u6355\u83b7\u6d41\u91cf\u2014\u2014\u8fc7\u6ee4\u6307\u5411\u9ad8\u98ce\u9669\u5730\u533a\u7684\u8fde\u63a5\u3002<\/li>\n
               • \u6392\u67e5\u5f02\u5e38\u534f\u8bae\uff08\u5982\u7528\u4e8e\u50f5\u5c38\u7f51\u7edc\u901a\u4fe1\u7684IRC\u6d41\u91cf\uff09\u6216\u5411\u672a\u77e5IP\u7684\u5927\u91cf\u6570\u636e\u4f20\u8f93\u3002<\/li>\n
               • \u5bf9\u6bd4\u5f53\u524d\u6d41\u91cf\u6a21\u5f0f\u4e0e\u5386\u53f2\u57fa\u51c6\uff0c\u8bc6\u522b\u504f\u79bb\u6b63\u5e38\u8303\u56f4\u7684\u884c\u4e3a\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n

                 [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text css=””]<\/p>\n

                 \u65e5\u672c\u670d\u52a1\u5668\u5165\u4fb5\u68c0\u6d4b\u7684\u6280\u672f\u5de5\u5177\u9009\u578b<\/strong><\/h2>\n

                 \u6280\u672f\u4eba\u5458\u53ef\u901a\u8fc7\u4ee5\u4e0b\u5de5\u5177\u7c7b\u522b\u7b80\u5316\u68c0\u6d4b\u6d41\u7a0b\u2014\u2014\u91cd\u70b9\u5173\u6ce8\u4e0e\u65e5\u672c\u670d\u52a1\u5668\u73af\u5883\u7684\u517c\u5bb9\u6027\uff08\u5982\u652f\u6301UTF-8\u3001\u65e5\u6587\u64cd\u4f5c\u7cfb\u7edf\u53ca\u8de8\u5883\u7f51\u7edc\u8def\u7531\uff09\uff1a<\/p>\n

                 \u5f00\u6e90\u547d\u4ee4\u884c\u5de5\u5177<\/h3>\n

                 \n
                 • \u65e5\u5fd7\u5206\u6790\u5de5\u5177\uff1a\u89e3\u6790\u8fc7\u6ee4\u7cfb\u7edf\u65e5\u5fd7\uff0c\u81ea\u52a8\u9ad8\u4eae\u5f02\u5e38\u4fe1\u606f\uff0c\u65e0\u9700\u624b\u52a8\u68c0\u7d22\u3002<\/li>\n
                 • \u54c8\u5e0c\u9a8c\u8bc1\u5de5\u5177\uff1a\u81ea\u52a8\u5316\u6587\u4ef6\u5b8c\u6574\u6027\u68c0\u67e5\uff0c\u5bf9\u6bd4\u5b58\u50a8\u7684\u57fa\u51c6\u54c8\u5e0c\u503c\u3002<\/li>\n
                 • \u7f51\u7edc\u76d1\u63a7\u811a\u672c\uff1a\u5b9e\u65f6\u8ddf\u8e2a\u7aef\u53e3\u6d3b\u52a8\u548c\u6d41\u91cf\u6a21\u5f0f\u3002<\/li>\n<\/ul>\n

                   \u9ad8\u7ea7\u76d1\u63a7\u6846\u67b6<\/h3>\n

                   \n
                   • \u5165\u4fb5\u68c0\u6d4b\u7cfb\u7edf\uff08IDS\uff09\uff1a\u76d1\u63a7\u7f51\u7edc\u6d41\u91cf\u548c\u7cfb\u7edf\u4e8b\u4ef6\uff0c\u8bc6\u522b\u5df2\u77e5\u653b\u51fb\u7279\u5f81\u3002<\/li>\n
                   • \u6587\u4ef6\u5b8c\u6574\u6027\u76d1\u63a7\uff08FIM\uff09\uff1a\u5bf9\u5173\u952e\u6587\u4ef6\u548c\u76ee\u5f55\u7684\u975e\u6cd5\u4fee\u6539\u53d1\u51fa\u544a\u8b66\u3002<\/li>\n
                   • \u5b89\u5168\u4fe1\u606f\u4e0e\u4e8b\u4ef6\u7ba1\u7406\uff08SIEM\uff09\u5de5\u5177\uff1a\u5173\u8054\u591a\u6e90\u65e5\u5fd7\uff08\u670d\u52a1\u5668\u3001\u9632\u706b\u5899\u3001\u5e94\u7528\uff09\uff0c\u8bc6\u522b\u590d\u6742\u653b\u51fb\u94fe\u3002<\/li>\n<\/ul>\n

                     \u5de5\u5177\u9009\u578b\u6838\u5fc3\u8981\u70b9\uff1a\u786e\u4fdd\u4e0e\u670d\u52a1\u5668\u64cd\u4f5c\u7cfb\u7edf\uff08\u5982Linux\u3001FreeBSD\uff09\u517c\u5bb9\uff0c\u4e14\u8d44\u6e90\u5360\u7528\u4f4e\u2014\u2014\u907f\u514d\u5728\u9ad8\u6d41\u91cf\u65e5\u672c\u670d\u52a1\u5668\u4e0a\u4f7f\u7528\u6d88\u8017\u5927\u91cfCPU\/\u5185\u5b58\u7684\u5de5\u5177\u3002<\/p>\n

                     [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text css=””]<\/p>\n

                     \u5e94\u6025\u54cd\u5e94\uff1a\u68c0\u6d4b\u5230\u5165\u4fb5\u540e\u5982\u4f55\u5904\u7406<\/strong><\/h2>\n

                     \u82e5\u6280\u672f\u68c0\u67e5\u786e\u8ba4\u670d\u52a1\u5668\u88ab\u5165\u4fb5\uff0c\u9700\u5feb\u901f\u884c\u52a8\u63a7\u5236\u635f\u5931\u2014\u2014\u9075\u5faa\u4ee5\u4e0b\u7ed3\u6784\u5316\u6d41\u7a0b\uff1a<\/p>\n

                     \n
                     1. \u9694\u79bb\u53d7\u611f\u67d3\u670d\u52a1\u5668<\/strong>\u65ad\u5f00\u4e0e\u4e92\u8054\u7f51\u6216\u5185\u90e8\u7f51\u7edc\u7684\u8fde\u63a5\uff0c\u9632\u6b62\u653b\u51fb\u6a2a\u5411\u6269\u6563\u3002\u907f\u514d\u7acb\u5373\u91cd\u542f\u670d\u52a1\u5668\u2014\u2014\u53ef\u80fd\u7834\u574f\u53d6\u8bc1\u8bc1\u636e\u3002<\/li>\n
                     2. \u4fdd\u62a4\u5173\u952e\u6570\u636e<\/strong>\u5c06\u672a\u53d7\u5f71\u54cd\u7684\u6570\u636e\u5907\u4efd\u81f3\u79bb\u7ebf\u52a0\u5bc6\u5b58\u50a8\u8bbe\u5907\u3002\u4f18\u5148\u5907\u4efd\u5ba2\u6237\u6570\u636e\u3001\u5e94\u7528\u4ee3\u7801\u548c\u914d\u7f6e\u6587\u4ef6\u3002<\/li>\n
                     3. \u6e05\u9664\u6076\u610f\u4ee3\u7801<\/strong>\u5220\u9664\u672a\u6388\u6743\u8fdb\u7a0b\u3001\u6587\u4ef6\u548c\u7528\u6237\u8d26\u6237\u3002\u4fee\u590d\u5bfc\u81f4\u5165\u4fb5\u7684\u6f0f\u6d1e\uff08\u5982\u672a\u6253\u8865\u4e01\u7684\u8f6f\u4ef6\u3001\u5f31\u51ed\u8bc1\uff09\u3002<\/li>\n
                     4. \u5bfb\u6c42\u6280\u672f\u652f\u6301<\/strong>\u8054\u7cfb\u670d\u52a1\u5668\u79df\u7528<\/b>\u6216\u670d\u52a1\u5668\u6258\u7ba1<\/b>\u670d\u52a1\u5546\u7684\u6280\u672f\u56e2\u961f\uff0c\u83b7\u53d6\u7f51\u7edc\u5c42\u9762\u7684 remediation \u652f\u6301\u548c\u53d6\u8bc1\u5206\u6790\u534f\u52a9\u3002<\/li>\n
                     5. \u4ece\u5e72\u51c0\u5907\u4efd\u6062\u590d<\/strong>\u4ece\u5df2\u77e5\u6b63\u5e38\u7684\u5907\u4efd\u4e2d\u91cd\u65b0\u5b89\u88c5\u64cd\u4f5c\u7cfb\u7edf\u548c\u5e94\u7528\u3002\u91cd\u65b0\u63a5\u5165\u7f51\u7edc\u524d\uff0c\u9a8c\u8bc1\u7cfb\u7edf\u5b8c\u6574\u6027\u3002<\/li>\n<\/ol>\n

                        [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text css=””]<\/p>\n

                        \u4e3b\u52a8\u9632\u62a4\uff1a\u9884\u9632\u65e5\u672c\u670d\u52a1\u5668\u5165\u4fb5<\/strong><\/h2>\n

                        \u68c0\u6d4b\u81f3\u5173\u91cd\u8981\uff0c\u4f46\u9884\u9632\u80fd\u4ece\u6839\u6e90\u964d\u4f4e\u5165\u4fb5\u98ce\u9669\u3002\u6280\u672f\u4eba\u5458\u5e94\u90e8\u7f72\u4ee5\u4e0b\u6280\u672f\u9632\u62a4\u63aa\u65bd\uff1a<\/p>\n

                        \n
                        • \u5b9a\u671f\u6253\u8865\u4e01<\/strong>\u81ea\u52a8\u5316\u64cd\u4f5c\u7cfb\u7edf\u5185\u6838\u3001\u5e94\u7528\u53ca\u4f9d\u8d56\u7ec4\u4ef6\u7684\u66f4\u65b0\u3002\u751f\u4ea7\u73af\u5883\u7684\u65e5\u672c\u670d\u52a1\u5668\u90e8\u7f72\u524d\uff0c\u5148\u5728\u6d4b\u8bd5\u73af\u5883\u9a8c\u8bc1\u8865\u4e01\u517c\u5bb9\u6027\u3002<\/li>\n
                        • \u5f3a\u5316\u8bbf\u95ee\u63a7\u5236<\/strong>\u5f3a\u5236\u542f\u7528SSH\u5bc6\u94a5\u8ba4\u8bc1\uff08\u7981\u7528\u5bc6\u7801\u767b\u5f55\uff09\uff0c\u5bf9\u7ba1\u7406\u5458\u8bbf\u95ee\u5b9e\u65bdIP\u767d\u540d\u5355\u9650\u5236\u3002\u7528\u6237\u8d26\u6237\u9075\u5faa\u6700\u5c0f\u6743\u9650\u539f\u5219\u3002<\/li>\n
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                          Read More…<\/a><\/p>\n","protected":false},"author":1,"featured_media":28453,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[8117],"tags":[9334,9335,9333,8163],"class_list":["post-28457","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-japan-dedicated-server-sc","tag-colocation-security","tag-server-intrusion-check","tag-japan-server-breach-detection","tag-japan-server-hosting-sc"],"acf":[],"yoast_head":"\n