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

\u6df1\u5ea6\u5206\u6790\u6280\u672f<\/strong><\/h2>\n

\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\u8fdb\u884c\u5f7b\u5e95\u7684\u53d6\u8bc1\u5206\u6790\uff1a<\/p>\n

\n
• \u8fdb\u7a0b\u5206\u6790\uff1a\n
  \n
  • \u68c0\u67e5\u9690\u85cf\u8fdb\u7a0b\uff1a`ps aux | grep -i ‘[h]idden’`<\/li>\n
  • \u5206\u6790\u8fdb\u7a0b\u6811\uff1a`pstree -p`<\/li>\n
  • \u68c0\u67e5\u8fdb\u7a0b\u5957\u63a5\u5b57\u8fde\u63a5\uff1a`lsof -i`<\/li>\n<\/ul>\n<\/li>\n
  • \u6587\u4ef6\u7cfb\u7edf\u8c03\u67e5\uff1a\n
    \n
    • \u641c\u7d22\u6700\u8fd1\u4fee\u6539\u7684\u6587\u4ef6\uff1a`find \/ -mtime -2 -ls`<\/li>\n
    • \u68c0\u67e5\u6587\u4ef6\u5b8c\u6574\u6027\uff1a`tripwire`\u6216`aide`<\/li>\n
    • \u68c0\u67e5\u9690\u85cf\u76ee\u5f55\uff1a`find \/ -name “.*” -ls`<\/li>\n<\/ul>\n<\/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

      \u6076\u610f\u8f6f\u4ef6\u6e05\u9664\u548c\u7cfb\u7edf\u6e05\u7406<\/strong><\/h2>\n

      \u7cfb\u7edf\u5730\u6267\u884c\u8fd9\u4e9b\u6e05\u7406\u7a0b\u5e8f\uff1a<\/p>\n

      \n
      • \u7ec8\u6b62\u53ef\u7591\u8fdb\u7a0b\n
        \n
        • \u8bc6\u522bPID\uff1a`ps aux | grep -i ‘[suspicious_name]’`<\/li>\n
        • \u7ec8\u6b62\u8fdb\u7a0b\uff1a`kill -9 [PID]`<\/li>\n<\/ul>\n<\/li>\n
        • \u5220\u9664\u6076\u610f\u6587\u4ef6\n
          \n
          • \u68c0\u67e5\u5e38\u89c1\u9690\u85cf\u4f4d\u7f6e\uff1a`\/tmp`\u3001`\/var\/tmp`\u3001`\/dev\/shm`<\/li>\n
          • \u5220\u9664\u5b9a\u65f6\u4efb\u52a1\uff1a`crontab -r`<\/li>\n
          • \u6e05\u7406SSH\u6388\u6743\u5bc6\u94a5\uff1a`truncate -s 0 ~\/.ssh\/authorized_keys`<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

            \u5728\u5904\u7406\u65e5\u672c\u670d\u52a1\u5668\u79df\u7528\u73af\u5883\u65f6\uff0c\u8bf7\u7279\u522b\u6ce8\u610f\uff1a<\/p>\n

            \n
            • \u9488\u5bf9\u4e9a\u6d32\u57fa\u7840\u8bbe\u65bd\u7684\u533a\u57df\u7279\u5b9a\u6076\u610f\u8f6f\u4ef6\u53d8\u4f53<\/li>\n
            • \u4f2a\u88c5\u6210\u5408\u6cd5\u65e5\u672c\u7cfb\u7edf\u5de5\u5177\u7684\u540e\u95e8<\/li>\n
            • \u6839\u636e\u65e5\u672c\u6807\u51c6\u65f6\u95f4\u8bbe\u5b9a\u7684\u5b9a\u65f6\u89e6\u53d1\u811a\u672c<\/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

              \u7cfb\u7edf\u52a0\u56fa\u548c\u6062\u590d<\/strong><\/h2>\n

              \u6e05\u7406\u7cfb\u7edf\u540e\uff0c\u5b9e\u65bd\u4ee5\u4e0b\u52a0\u56fa\u63aa\u65bd\uff1a<\/p>\n

              \n
              • \u66f4\u65b0\u548c\u8865\u4e01\u7ba1\u7406\uff1a\n
                \n
                • \u7cfb\u7edf\u66f4\u65b0\uff1a`apt update && apt upgrade -y`\u6216`yum update -y`<\/li>\n
                • \u5185\u6838\u8865\u4e01\uff1a`apt dist-upgrade`\u6216`yum kernel-update`<\/li>\n
                • \u5b89\u5168\u8f6f\u4ef6\u5305\uff1a`apt install rkhunter chkrootkit`<\/li>\n<\/ul>\n<\/li>\n
                • \u8bbf\u95ee\u63a7\u5236\u5f3a\u5316\uff1a\n
                  \n
                  • \u5bc6\u7801\u91cd\u7f6e\uff1a`passwd [username]`<\/li>\n
                  • SSH\u5bc6\u94a5\u8f6e\u6362\uff1a`ssh-keygen -t ed25519`<\/li>\n
                  • PAM\u914d\u7f6e\uff1a`vim \/etc\/pam.d\/sshd`<\/li>\n<\/ul>\n<\/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

                    \u65e5\u672c\u5b89\u5168\u5de5\u5177\u96c6\u6210<\/strong><\/h2>\n

                    \u5229\u7528\u8fd9\u4e9b\u65e5\u672c\u7279\u5b9a\u7684\u5b89\u5168\u5de5\u5177\u52a0\u5f3a\u4fdd\u62a4\uff1a<\/p>\n

                    \n
                    • JPCERT\/CC\u5b89\u5168\u5de5\u5177\uff1a\n
                      \n
                      • \u7528\u4e8eWindows\u4e8b\u4ef6\u5206\u6790\u7684LogonTracer<\/li>\n
                      • \u7528\u4e8e\u5b9e\u65f6\u5a01\u80c1\u76d1\u63a7\u7684nicter<\/li>\n
                      • \u7528\u4e8e\u7f51\u7edc\u5f02\u5e38\u68c0\u6d4b\u7684TSUBAME<\/li>\n<\/ul>\n<\/li>\n
                      • \u533a\u57df\u5b89\u5168\u8d44\u6e90\uff1a\n
                        \n
                        • IPA\u5b89\u5168\u516c\u544a\u6570\u636e\u5e93<\/li>\n
                        • JNSA\u6700\u4f73\u5b9e\u8df5\u6307\u5357<\/li>\n
                        • CERT-JP\u5a01\u80c1\u60c5\u62a5\u6e90<\/li>\n<\/ul>\n<\/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

                          \u9884\u9632\u63aa\u65bd\u5b9e\u65bd<\/strong><\/h2>\n

                          \u90e8\u7f72\u8fd9\u4e9b\u4e3b\u52a8\u5b89\u5168\u63a7\u5236\uff1a<\/p>\n

                          \n
                          • \u81ea\u52a8\u5316\u76d1\u63a7\uff1a\n
                            \n
                            • \u914d\u7f6e\u652f\u6301\u65e5\u8bed\u73af\u5883\u7684Nagios<\/li>\n
                            • \u8bbe\u7f6e\u57fa\u4e8e\u65e5\u672c\u6807\u51c6\u65f6\u95f4\u7684Zabbix\u8b66\u62a5<\/li>\n
                            • \u4f7f\u7528\u81ea\u5b9a\u4e49\u89c4\u5219\u5b9e\u65bdfail2ban<\/li>\n<\/ul>\n<\/li>\n
                            • \u5907\u4efd\u7b56\u7565\uff1a\n
                              \n
                              • \u6bcf\u65e5\u589e\u91cf\u5907\u4efd\uff1a`rdiff-backup \/var\/www \/backup`<\/li>\n
                              • \u6bcf\u5468\u5b8c\u6574\u5907\u4efd\uff1a`tar czf \/backup\/full-$(date +%Y%m%d).tar.gz \/var\/www`<\/li>\n
                              • \u590d\u5236\u5230\u65e5\u672c\u6570\u636e\u4e2d\u5fc3\u7684\u5f02\u5730\u5907\u4efd<\/li>\n<\/ul>\n<\/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

                                \u5e94\u6025\u54cd\u5e94\u6e05\u5355<\/strong><\/h2>\n

                                \u968f\u65f6\u51c6\u5907\u6b64\u4e8b\u4ef6\u54cd\u5e94\u6e05\u5355\u4ee5\u4f9b\u5feb\u901f\u53c2\u8003\uff1a<\/p>\n

                                \n
                                • \u521d\u59cb\u54cd\u5e94\uff1a\n
                                  \n
                                  • \u8bb0\u5f55\u4e8b\u4ef6\u65f6\u95f4\u548c\u68c0\u6d4b\u65b9\u6cd5<\/li>\n
                                  • \u9694\u79bb\u53d7\u5f71\u54cd\u7684\u7cfb\u7edf<\/li>\n
                                  • \u901a\u77e5\u5b89\u5168\u56e2\u961f\u548c\u5229\u76ca\u76f8\u5173\u8005<\/li>\n<\/ul>\n<\/li>\n
                                  • \u8c03\u67e5\uff1a\n
                                    \n
                                    • \u6355\u83b7\u6613\u5931\u6570\u636e<\/li>\n
                                    • \u521b\u5efa\u7cfb\u7edf\u5feb\u7167<\/li>\n
                                    • \u8bb0\u5f55\u6240\u6709\u53d1\u73b0<\/li>\n<\/ul>\n<\/li>\n
                                    • \u6062\u590d\uff1a\n
                                      \n
                                      • \u79fb\u9664\u6076\u610f\u7ec4\u4ef6<\/li>\n
                                      • \u4fee\u8865\u6f0f\u6d1e<\/li>\n
                                      • \u4ece\u6e05\u6d01\u5907\u4efd\u6062\u590d<\/li>\n<\/ul>\n<\/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

                                        \u91cd\u8981\u8054\u7cfb\u4fe1\u606f<\/strong><\/h2>\n

                                        \u4fdd\u5b58\u8fd9\u4e9b\u65e5\u672c\u670d\u52a1\u5668\u79df\u7528\u73af\u5883\u7684\u7d27\u6025\u8054\u7cfb\u65b9\u5f0f\uff1a<\/p>\n

                                        \n
                                        • JPCERT\/CC\uff1a\u4e8b\u4ef6\u62a5\u544a\u70ed\u7ebf<\/li>\n
                                        • \u672c\u5730\u670d\u52a1\u5668\u79df\u7528\u63d0\u4f9b\u5546\u7684\u5b89\u5168\u56e2\u961f<\/li>\n
                                        • \u533a\u57dfCSIRT\u8054\u7cfb\u4eba<\/li>\n
                                        • \u65e5\u672c\u6570\u5b57\u53d6\u8bc1\u4e13\u5bb6<\/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

                                          \u7ed3\u8bba<\/strong><\/h2>\n

                                          \u5728\u4e0d\u65ad\u53d1\u5c55\u7684\u65e5\u672c\u670d\u52a1\u5668\u79df\u7528\u5b89\u5168\u73af\u5883\u4e2d\uff0c\u4e8b\u4ef6\u54cd\u5e94\u9700\u8981\u6280\u672f\u4e13\u957f\u548c\u533a\u57df\u610f\u8bc6\u7684\u7ed3\u5408\u3002\u867d\u7136\u670d\u52a1\u5668\u5165\u4fb5\u53ef\u80fd\u9020\u6210\u4e25\u91cd\u7834\u574f\uff0c\u4f46\u9075\u5faa\u8fd9\u79cd\u7ed3\u6784\u5316\u65b9\u6cd5\u53ef\u4ee5\u786e\u4fdd\u9ad8\u6548\u6062\u590d\u5e76\u52a0\u5f3a\u60a8\u7684\u5b89\u5168\u6001\u52bf\u3002\u5b9a\u671f\u6f14\u7ec3\u548c\u66f4\u65b0\u60a8\u7684\u4e8b\u4ef6\u54cd\u5e94\u8ba1\u5212\uff0c\u7279\u522b\u662f\u9488\u5bf9\u65e5\u672c\u670d\u52a1\u5668\u79df\u7528\u73af\u5883\u7684\u90e8\u5206\uff0c\u5c06\u6709\u52a9\u4e8e\u4fdd\u6301\u5bf9\u672a\u6765\u5b89\u5168\u6311\u6218\u7684\u51c6\u5907\u3002<\/p>\n

                                          \n

                                          \u5feb\u901f\u53c2\u8003<\/h3>\n

                                          \n
                                          • \u4fdd\u5b58\u672c\u6307\u5357\u4ee5\u4f9b\u79bb\u7ebf\u53c2\u8003<\/li>\n
                                          • \u6bcf\u5b63\u5ea6\u5ba1\u67e5\u548c\u66f4\u65b0\u7a0b\u5e8f<\/li>\n
                                          • \u5728\u6d4b\u8bd5\u73af\u5883\u4e2d\u6d4b\u8bd5\u6062\u590d\u7a0b\u5e8f<\/li>\n
                                          • \u4fdd\u6301\u76d1\u63a7\u5de5\u5177\u6821\u51c6\u5230\u65e5\u672c\u6807\u51c6\u65f6\u95f4<\/li>\n<\/ul>\n<\/div>\n

                                            \u8bf7\u8bb0\u4f4f\uff0c\u5728\u670d\u52a1\u5668\u5165\u4fb5\u6848\u4f8b\u4e2d\uff0c\u6210\u529f\u7684\u4e8b\u4ef6\u54cd\u5e94\u53d6\u51b3\u4e8e\u901f\u5ea6\u3001\u7cbe\u786e\u6027\u548c\u7cfb\u7edf\u5316\u6267\u884c\u3002\u901a\u8fc7\u9075\u5faa\u8fd9\u4e9b\u9488\u5bf9\u65e5\u672c\u670d\u52a1\u5668\u79df\u7528\u73af\u5883\u7684\u5177\u4f53\u6307\u5357\uff0c\u60a8\u5c06\u505a\u597d\u5145\u5206\u51c6\u5907\uff0c\u80fd\u591f\u6709\u6548\u5904\u7406\u5b89\u5168\u4e8b\u4ef6\uff0c\u540c\u65f6\u4fdd\u6301\u7b26\u5408\u5f53\u5730\u6cd5\u89c4\u3002<\/p>\n

                                            [\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

                                            [vc_row el_class=”blog-detail-section”][vc_column][vc_column_text css=””] \u5728\u65e5\u672c\u670d\u52a1\u5668\u79df\u7528\u548c\u670d\u52a1\u5668\u6258\u7ba1\u670d\u52a1\u7684\u52a8\u6001\u73af\u5883\u4e2d\uff0c\u670d\u52a1\u5668\u5165\u4fb5\u53d8\u5f97\u8d8a\u6765\u8d8a\u590d\u6742\u3002\u672c\u7efc\u5408\u6307\u5357\u6df1\u5165\u63a2\u8ba8\u4e86\u4e8b\u4ef6\u54cd\u5e94\u7684\u6280\u672f\u5c42\u9762\uff0c\u4e13\u95e8\u4e3a\u7ba1\u7406\u65e5\u672c\u670d\u52a1\u5668\u57fa\u7840\u8bbe\u65bd\u7684\u6280\u672f\u4e13\u4e1a\u4eba\u5458\u5b9a\u5236\u3002\u65e0\u8bba\u60a8\u662f\u5728\u5904\u7406\u53d7\u635f\u7684\u865a\u62df\u4e13\u7528\u670d\u52a1\u5668(VPS)\u8fd8\u662f\u72ec\u7acb\u670d\u52a1\u5668\u73af\u5883\uff0c\u8fd9\u4e9b\u53ef\u6267\u884c\u7684\u6b65\u9aa4\u90fd\u5c06\u5e2e\u52a9\u60a8\u5ea6\u8fc7\u5371\u673a\u3002 [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text css=””] \u68c0\u6d4b\u548c\u521d\u6b65\u8bc4\u4f30 \u5f53\u65e5\u672c\u670d\u52a1\u5668\u79df\u7528\u73af\u5883\u4e2d\u51fa\u73b0\u53ef\u7591\u6d3b\u52a8\u65f6\uff0c\u5feb\u901f\u68c0\u6d4b\u53d8\u5f97\u81f3\u5173\u91cd\u8981\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u8fdb\u884c\u521d\u6b65\u8bc4\u4f30\uff1a \u901a\u8fc7`top`\u3001`htop`\u6216`atop`\u7b49\u5de5\u5177\u76d1\u63a7\u7cfb\u7edf\u6307\u6807\uff0c\u67e5\u627e\u5f02\u5e38\u7684CPU\/RAM\u4f7f\u7528\u6a21\u5f0f \u4f7f\u7528`nethogs`\u6216`iftop`\u68c0\u67e5\u7f51\u7edc\u6d41\u91cf\u5f02\u5e38 \u901a\u8fc7`journalctl`\u6216`\/var\/log\/`\u4e2d\u7684\u4f20\u7edf\u65e5\u5fd7\u6587\u4ef6\u5206\u6790\u7cfb\u7edf\u65e5\u5fd7 \u4f7f\u7528`netstat -tupan`\u6216`ss -tupan`\u67e5\u770b\u6d3b\u52a8\u8fde\u63a5 \u5bf9\u4e8e\u65e5\u672c\u670d\u52a1\u5668\u79df\u7528\u73af\u5883\uff0c\u8bf7\u6ce8\u610f\u4ee5\u4e0b\u5177\u4f53\u6307\u6807\uff1a \u610f\u5916\u7684\u5230\u4e9a\u6d32IP\u8303\u56f4\u5185\u670d\u52a1\u5668\u7684\u51fa\u7ad9\u8fde\u63a5 \u5305\u542b\u65e5\u6587\u5b57\u7b26\u7684\u5f02\u5e38\u8fdb\u7a0b\u540d \u5728\u65e5\u672c\u6807\u51c6\u65f6\u95f4(JST)\u975e\u5de5\u4f5c\u65f6\u95f4\u7684\u4fee\u6539\u65f6\u95f4\u6233\u6a21\u5f0f \u5728\u4f4e\u6d41\u91cf\u671f\u95f4\uff08JST 23:00-05:00\uff09\u7684\u5f02\u5e38\u8d44\u6e90\u4f7f\u7528 [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text css=””] \u5373\u65f6\u54cd\u5e94\u534f\u8bae \u786e\u8ba4\u5165\u4fb5\u540e\uff0c\u6309\u987a\u5e8f\u6267\u884c\u4ee5\u4e0b\u5173\u952e\u6b65\u9aa4\uff1a \u7cfb\u7edf\u9694\u79bb \u6267\u884c\uff1a`iptables -P INPUT DROP; iptables -P OUTPUT DROP` \u4fdd\u6301SSH\u8bbf\u95ee\uff1a`iptables -I INPUT -p tcp –dport 22 -j ACCEPT` \u8bb0\u5f55\u5f53\u524d\u7f51\u7edc\u72b6\u6001\uff1a`iptables-save > \/root\/firewall-state.txt` \u8bc1\u636e\u4fdd\u5b58 \u521b\u5efa\u5185\u5b58\u8f6c\u50a8\uff1a`lime-forensics`\u6216`dd if=\/proc\/mem` \u6355\u83b7\u6613\u5931\u6570\u636e\uff1a`volatility` \u5f52\u6863\u7cfb\u7edf\u65e5\u5fd7\uff1a`tar czf \/secure\/logs.tar.gz \/var\/log\/` […]<\/p>\n

                                            Read More…<\/a><\/p>\n","protected":false},"author":1,"featured_media":27658,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[8117],"tags":[9016,9017,9018,9019,583],"class_list":["post-27661","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-japan-dedicated-server-sc","tag-server-intrusion","tag-incident-response","tag-japan-hosting-security","tag-server-recovery","tag-network-security-sc"],"acf":[],"yoast_head":"\n