\u6a94\u6848\u8207\u6578\u64da\u7ac4\u6539\u75d5\u8de1<\/h3>\n

\n
• \u7cfb\u7d71\u8a2d\u5b9a\u6a94\u6848\uff08\u5982\/etc\/passwd\u3001\/etc\/ssh\/sshd_config\uff09\u7684\u4fee\u6539\u6642\u9593\u6233\u7121\u8b8a\u66f4\u65e5\u8a8c\u652f\u63f4\u3002<\/li>\n
• \u7cfb\u7d71\u76ee\u9304\uff08\u5982\/tmp\u3001\/var\/tmp\uff09\u4e2d\u51fa\u73fe\u672a\u77e5\u53ef\u57f7\u884c\u6a94\u6848\uff0c\u6216\u540d\u7a31\u6df7\u6dc6\u7684\u96b1\u85cf\u6a94\u6848\u3002<\/li>\n
• \u65e5\u8a8c\u6a94\u6848\u640d\u58de\u6216\u7f3a\u5931\u2014\u2014\u653b\u64ca\u8005\u5e38\u900f\u904e\u522a\u9664\u3001\u7ac4\u6539\u65e5\u8a8c\u63a9\u84cb\u75d5\u8de1\u3002<\/li>\n
• \u8cc7\u6599\u5eab schema \u88ab\u975e\u6cd5\u4fee\u6539\uff0c\u6216\u6578\u64da\u88ab\u610f\u5916\u532f\u51fa\u81f3\u5916\u90e8\u5132\u5b58\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\u500b\u6280\u8853\u4eba\u54e1\u8a8d\u53ef\u7684\u65e5\u672c\u4f3a\u670d\u5668\u5165\u4fb5\u6aa2\u6e2c\u6b65\u9a5f<\/strong><\/h2>\n

  \u4ee5\u4e0b\u6b65\u9a5f\u512a\u5148\u900f\u904e\u6280\u8853\u9a57\u8b49\u800c\u975e\u731c\u6e2c\uff0c\u5229\u7528\u7cfb\u7d71\u5167\u5efa\u5de5\u5177\u548c\u624b\u52d5\u6aa2\u67e5\u78ba\u8a8d\u5165\u4fb5\u3002\u6309\u9806\u5e8f\u57f7\u884c\u2014\u2014\u5f9e\u5feb\u901f\u65e5\u8a8c\u6383\u63cf\u5230\u6df1\u5ea6\u6a94\u6848\u5b8c\u6574\u6027\u5be9\u8a08\uff1a<\/p>\n

  \n
  1. \u5be9\u8a08\u8a8d\u8b49\u65e5\u8a8c<\/strong>\u5b58\u53d6\u7cfb\u7d71\u65e5\u8a8c\uff08\u5982\/var\/log\/auth.log\u3001\/var\/log\/secure\uff09\u8b58\u5225\u53ef\u7591\u767b\u5165\u884c\u70ba\uff1a\n
     \n
     • \u4f7f\u7528 grep -i “failed” \/var\/log\/auth.log \u904e\u6ffe\u767b\u5165\u5931\u6557\u7d00\u9304\u2014\u2014\u91cd\u9ede\u95dc\u6ce8\u55ae\u4e00IP\u7684\u653b\u64ca\u6a21\u5f0f\u3002<\/li>\n
     • \u6838\u67e5\u4f86\u81ea\u672a\u6388\u6b0aIP\u6bb5\u6216\u975e\u5de5\u4f5c\u6642\u9593\u7684\u6210\u529f\u767b\u5165\u7d00\u9304\u3002<\/li>\n
     • \u9a57\u8b49 sudo\/root \u5b58\u53d6\u65e5\u8a8c\uff0c\u78ba\u4fdd\u7121\u975e\u6cd5\u6b0a\u9650\u63d0\u5347\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<\/li>\n
     • \u6383\u63cf\u672a\u6388\u6b0a\u7a0b\u5e8f\u8207\u9023\u63a5\u57e0<\/strong>\u900f\u904e\u547d\u4ee4\u5217\u5de5\u5177\u6620\u5c04\u57f7\u884c\u7a0b\u5e8f\u548c\u958b\u653e\u9023\u63a5\u57e0\uff1a\n
       \n
       • \u57f7\u884c ps aux | grep -v grep \u5217\u51fa\u6240\u6709\u7a0b\u5e8f\u2014\u2014\u8207\u5df2\u77e5\u61c9\u7528\u53ca\u7cfb\u7d71\u7a0b\u5e8f\u4ea4\u53c9\u6bd4\u5c0d\u3002<\/li>\n
       • \u4f7f\u7528 netstat -tuln \u6216 ss -tuln \u67e5\u770b\u958b\u653e\u9023\u63a5\u57e0\u2014\u2014\u95dc\u9589\u670d\u52d9\u65e0\u9700\u7684\u9023\u63a5\u57e0\uff08\u5982\u672a\u4f7f\u7528\u7684FTP\u6216Telnet\u9023\u63a5\u57e0\uff09\u3002<\/li>\n
       • \u6392\u67e5\u540d\u7a31\u6df7\u6dc6\u7684\u7a0b\u5e8f\uff08\u5982\u96a8\u6a5f\u5b57\u4e32\u6216\u6a21\u4effsshd2\u7b49\u7cfb\u7d71\u7a0b\u5e8f\u7684\u540d\u7a31\uff09\u3002<\/li>\n<\/ul>\n<\/li>\n
       • \u9a57\u8b49\u6a94\u6848\u5b8c\u6574\u6027<\/strong>\u5c0d\u6bd4\u7576\u524d\u6a94\u6848\u96dc\u6e4a\u503c\u8207\u57fa\u6e96\u503c\uff0c\u6aa2\u6e2c\u7ac4\u6539\u884c\u70ba\uff1a\n
         \n
         • \u4f7f\u7528 sha256sum \u751f\u6210\u95dc\u9375\u6a94\u6848\uff08\u5982Web\u4f3a\u670d\u5668\u8a2d\u5b9a\u3001\u7cfb\u7d71\u4e8c\u9032\u5236\u6a94\u6848\uff09\u7684\u96dc\u6e4a\u503c\u3002<\/li>\n
         • \u8207\u5099\u4efd\u6a94\u6848\u6216\u5df2\u77e5\u6b63\u5e38\u7248\u672c\u7684\u96dc\u6e4a\u503c\u4ea4\u53c9\u9a57\u8b49\u2014\u2014\u4e0d\u5339\u914d\u5247\u8868\u660e\u6a94\u6848\u88ab\u4fee\u6539\u3002<\/li>\n
         • \u4f7f\u7528 find \/ -type f -mtime -7 \u641c\u5c0b\u654f\u611f\u76ee\u9304\u4e2d\u8fd17\u5929\u5efa\u7acb\u7684\u6a94\u6848\u3002<\/li>\n<\/ul>\n<\/li>\n
         • \u6aa2\u67e5\u4f7f\u7528\u8005\u5e33\u6236<\/strong>\u78ba\u4fdd\u7121\u975e\u6cd5\u5efa\u7acb\u6216\u4fee\u6539\u7684\u4f7f\u7528\u8005\u5e33\u6236\uff1a\n
           \n
           • \u900f\u904e cat \/etc\/passwd \u5217\u51fa\u6240\u6709\u4f7f\u7528\u8005\u5e33\u6236\u2014\u2014\u522a\u9664\u8207\u5718\u968a\u7121\u95dc\u7684\u5e33\u6236\u3002<\/li>\n
           • \u6392\u67e5\u5177\u6709UID 0\uff08root\u6b0a\u9650\uff09\u4f46\u4e0d\u61c9\u64c1\u6709\u7ba1\u7406\u54e1\u6b0a\u9650\u7684\u4f7f\u7528\u8005\u3002<\/li>\n
           • \u9a57\u8b49\u5bc6\u78bc\u904e\u671f\u7b56\u7565\u548c\u8907\u96dc\u5ea6\u8a2d\u5b9a\uff0c\u6392\u9664\u5f31\u6191\u8b49\u98a8\u96aa\u3002<\/li>\n<\/ul>\n<\/li>\n
           • \u6383\u63cf\u60e1\u610f\u7a0b\u5f0f\u8207\u5f8c\u9580<\/strong>\u5b9a\u5411\u6383\u63cf\u8b58\u5225\u60e1\u610f\u8edf\u9ad4\u6216\u96b1\u85cf\u63a5\u5165\u9ede\uff1a\n
             \n
             • \u4f7f\u7528\u8f15\u91cf\u958b\u6e90\u6383\u63cf\u5de5\u5177\u6aa2\u6e2crootkit\u548c\u6728\u99ac\u2014\u2014\u91cd\u9ede\u95dc\u6ce8\u8a18\u61b6\u9ad4\u548c\u78c1\u789f\u6383\u63cf\u3002<\/li>\n
             • \u6aa2\u67e5SSH\u6388\u6b0a\u91d1\u9470\u6a94\u6848\uff08authorized_keys\uff09\uff0c\u6392\u67e5\u7528\u65bc\u5f8c\u9580\u5b58\u53d6\u7684\u672a\u77e5\u516c\u9470\u3002<\/li>\n
             • \u900f\u904e crontab -l \u67e5\u770b\u6392\u7a0b\u4efb\u52d9\uff0c\u6392\u9664\u975e\u6cd5\u8a08\u756b\u6307\u4ee4\u78bc\uff08\u5982\u57f7\u884c\u60e1\u610f\u8edf\u9ad4\u7684\u6307\u4ee4\u78bc\uff09\u3002<\/li>\n<\/ul>\n<\/li>\n
             • \u5206\u6790\u8de8\u5883\u6d41\u91cf<\/strong>\u7d50\u5408\u65e5\u672c\u4f3a\u670d\u5668\u7684\u8de8\u5883\u61c9\u7528\u5834\u666f\uff0c\u5be9\u8a08\u7db2\u8def\u6d41\u91cf\u7570\u5e38\uff1a\n
               \n
               • \u4f7f\u7528 tcpdump \u6216 Wireshark \u64f7\u53d6\u6d41\u91cf\u2014\u2014\u904e\u6ffe\u6307\u5411\u9ad8\u98a8\u96aa\u5730\u5340\u7684\u9023\u7dda\u3002<\/li>\n
               • \u6392\u67e5\u7570\u5e38\u5354\u5b9a\uff08\u5982\u7528\u65bc\u6bad\u5c4d\u7db2\u8def\u901a\u8a0a\u7684IRC\u6d41\u91cf\uff09\u6216\u5411\u672a\u77e5IP\u7684\u5927\u91cf\u6578\u64da\u50b3\u8f38\u3002<\/li>\n
               • \u5c0d\u6bd4\u7576\u524d\u6d41\u91cf\u6a21\u5f0f\u8207\u6b77\u53f2\u57fa\u6e96\uff0c\u8b58\u5225\u504f\u96e2\u6b63\u5e38\u7bc4\u570d\u7684\u884c\u70ba\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\u4f3a\u670d\u5668\u5165\u4fb5\u6aa2\u6e2c\u7684\u6280\u8853\u5de5\u5177\u9078\u578b<\/strong><\/h2>\n

                 \u6280\u8853\u4eba\u54e1\u53ef\u900f\u904e\u4ee5\u4e0b\u5de5\u5177\u985e\u5225\u7c21\u5316\u6aa2\u6e2c\u6d41\u7a0b\u2014\u2014\u91cd\u9ede\u95dc\u6ce8\u8207\u65e5\u672c\u4f3a\u670d\u5668\u74b0\u5883\u7684\u76f8\u5bb9\u6027\uff08\u5982\u652f\u63f4UTF-8\u3001\u65e5\u6587\u4f5c\u696d\u7cfb\u7d71\u53ca\u8de8\u5883\u7db2\u8def\u8def\u7531\uff09\uff1a<\/p>\n

                 \u958b\u6e90\u547d\u4ee4\u5217\u5de5\u5177<\/h3>\n

                 \n
                 • \u65e5\u8a8c\u5206\u6790\u5de5\u5177\uff1a\u89e3\u6790\u904e\u6ffe\u7cfb\u7d71\u65e5\u8a8c\uff0c\u81ea\u52d5\u9ad8\u4eae\u7570\u5e38\u8cc7\u8a0a\uff0c\u65e0\u9700\u624b\u52d5\u6aa2\u7d22\u3002<\/li>\n
                 • \u96dc\u6e4a\u9a57\u8b49\u5de5\u5177\uff1a\u81ea\u52d5\u5316\u6a94\u6848\u5b8c\u6574\u6027\u6aa2\u67e5\uff0c\u5c0d\u6bd4\u5132\u5b58\u7684\u57fa\u6e96\u96dc\u6e4a\u503c\u3002<\/li>\n
                 • \u7db2\u8def\u76e3\u63a7\u6307\u4ee4\u78bc\uff1a\u5373\u6642\u8ffd\u8e64\u9023\u63a5\u57e0\u6d3b\u52d5\u548c\u6d41\u91cf\u6a21\u5f0f\u3002<\/li>\n<\/ul>\n

                   \u9ad8\u968e\u76e3\u63a7\u6846\u67b6<\/h3>\n

                   \n
                   • \u5165\u4fb5\u6aa2\u6e2c\u7cfb\u7d71\uff08IDS\uff09\uff1a\u76e3\u63a7\u7db2\u8def\u6d41\u91cf\u548c\u7cfb\u7d71\u4e8b\u4ef6\uff0c\u8b58\u5225\u5df2\u77e5\u653b\u64ca\u7279\u5fb5\u3002<\/li>\n
                   • \u6a94\u6848\u5b8c\u6574\u6027\u76e3\u63a7\uff08FIM\uff09\uff1a\u5c0d\u95dc\u9375\u6a94\u6848\u548c\u76ee\u9304\u7684\u975e\u6cd5\u4fee\u6539\u767c\u51fa\u544a\u8b66\u3002<\/li>\n
                   • \u5b89\u5168\u8cc7\u8a0a\u8207\u4e8b\u4ef6\u7ba1\u7406\uff08SIEM\uff09\u5de5\u5177\uff1a\u95dc\u806f\u591a\u6e90\u65e5\u8a8c\uff08\u4f3a\u670d\u5668\u3001\u9632\u706b\u7246\u3001\u61c9\u7528\uff09\uff0c\u8b58\u5225\u8907\u96dc\u653b\u64ca\u93c8\u3002<\/li>\n<\/ul>\n

                     \u5de5\u5177\u9078\u578b\u6838\u5fc3\u8981\u9ede\uff1a\u78ba\u4fdd\u8207\u4f3a\u670d\u5668\u4f5c\u696d\u7cfb\u7d71\uff08\u5982Linux\u3001FreeBSD\uff09\u76f8\u5bb9\uff0c\u4e14\u8cc7\u6e90\u4f54\u7528\u4f4e\u2014\u2014\u907f\u514d\u5728\u9ad8\u6d41\u91cf\u65e5\u672c\u4f3a\u670d\u5668\u4e0a\u4f7f\u7528\u6d88\u8017\u5927\u91cfCPU\/\u8a18\u61b6\u9ad4\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

                     \u61c9\u6025\u56de\u61c9\uff1a\u6aa2\u6e2c\u5230\u5165\u4fb5\u5f8c\u5982\u4f55\u8655\u7406<\/strong><\/h2>\n

                     \u82e5\u6280\u8853\u6aa2\u67e5\u78ba\u8a8d\u4f3a\u670d\u5668\u88ab\u5165\u4fb5\uff0c\u9700\u5feb\u901f\u884c\u52d5\u63a7\u5236\u640d\u5931\u2014\u2014\u9075\u5faa\u4ee5\u4e0b\u7d50\u69cb\u5316\u6d41\u7a0b\uff1a<\/p>\n

                     \n
                     1. \u9694\u96e2\u53d7\u611f\u67d3\u4f3a\u670d\u5668<\/strong>\u4e2d\u65b7\u8207\u7db2\u969b\u7db2\u8def\u6216\u5167\u90e8\u7db2\u8def\u7684\u9023\u63a5\uff0c\u9632\u6b62\u653b\u64ca\u6a6b\u5411\u64f4\u6563\u3002\u907f\u514d\u7acb\u5373\u91cd\u555f\u4f3a\u670d\u5668\u2014\u2014\u53ef\u80fd\u7834\u58de\u53d6\u8b49\u8b49\u64da\u3002<\/li>\n
                     2. \u4fdd\u8b77\u95dc\u9375\u6578\u64da<\/strong>\u5c07\u672a\u53d7\u5f71\u97ff\u7684\u6578\u64da\u5099\u4efd\u81f3\u96e2\u7dda\u52a0\u5bc6\u5132\u5b58\u8a2d\u5099\u3002\u512a\u5148\u5099\u4efd\u5ba2\u6236\u6578\u64da\u3001\u61c9\u7528\u7a0b\u5f0f\u78bc\u548c\u8a2d\u5b9a\u6a94\u6848\u3002<\/li>\n
                     3. \u6e05\u9664\u60e1\u610f\u7a0b\u5f0f<\/strong>\u522a\u9664\u672a\u6388\u6b0a\u7a0b\u5e8f\u3001\u6a94\u6848\u548c\u4f7f\u7528\u8005\u5e33\u6236\u3002\u4fee\u5fa9\u5c0e\u81f4\u5165\u4fb5\u7684\u6f0f\u6d1e\uff08\u5982\u672a\u6253\u88dc\u4e01\u7684\u8edf\u9ad4\u3001\u5f31\u6191\u8b49\uff09\u3002<\/li>\n
                     4. \u5c0b\u6c42\u6280\u8853\u652f\u63f4<\/strong>\u806f\u7d61\u4f3a\u670d\u5668\u79df\u7528<\/b>\u6216\u4f3a\u670d\u5668\u8a17\u7ba1<\/b>\u670d\u52d9\u5546\u7684\u6280\u8853\u5718\u968a\uff0c\u53d6\u5f97\u7db2\u8def\u5c64\u9762\u7684 remediation \u652f\u63f4\u548c\u53d6\u8b49\u5206\u6790\u5354\u52a9\u3002<\/li>\n
                     5. \u5f9e\u4e7e\u6de8\u5099\u4efd\u5fa9\u539f<\/strong>\u5f9e\u5df2\u77e5\u6b63\u5e38\u7684\u5099\u4efd\u4e2d\u91cd\u65b0\u5b89\u88dd\u4f5c\u696d\u7cfb\u7d71\u548c\u61c9\u7528\u3002\u91cd\u65b0\u63a5\u5165\u7db2\u8def\u524d\uff0c\u9a57\u8b49\u7cfb\u7d71\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\u52d5\u9632\u8b77\uff1a\u9810\u9632\u65e5\u672c\u4f3a\u670d\u5668\u5165\u4fb5<\/strong><\/h2>\n

                        \u6aa2\u6e2c\u81f3\u95dc\u91cd\u8981\uff0c\u4f46\u9810\u9632\u80fd\u5f9e\u6839\u6e90\u964d\u4f4e\u5165\u4fb5\u98a8\u96aa\u3002\u6280\u8853\u4eba\u54e1\u61c9\u90e8\u7f72\u4ee5\u4e0b\u6280\u8853\u9632\u8b77\u63aa\u65bd\uff1a<\/p>\n

                        \n
                        • \u5b9a\u671f\u6253\u88dc\u4e01<\/strong>\u81ea\u52d5\u5316\u4f5c\u696d\u7cfb\u7d71\u6838\u5fc3\u3001\u61c9\u7528\u53ca\u4f9d\u8cf4\u5143\u4ef6\u7684\u66f4\u65b0\u3002\u751f\u7522\u74b0\u5883\u7684\u65e5\u672c\u4f3a\u670d\u5668\u90e8\u7f72\u524d\uff0c\u5148\u5728\u6e2c\u8a66\u74b0\u5883\u9a57\u8b49\u88dc\u4e01\u76f8\u5bb9\u6027\u3002<\/li>\n
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                          [vc_row el_class=”blog-detail-section”][vc_ […]<\/p>\n

                          Read More…<\/a><\/p>\n","protected":false},"author":1,"featured_media":28452,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[8116],"tags":[9330,9331,9332,8159],"class_list":["post-28456","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-japan-dedicated-server-tc","tag-japan-server-breach-detection","tag-colocation-security","tag-server-intrusion-check","tag-japan-server-hosting-tc"],"acf":[],"yoast_head":"\n