{"id":27125,"date":"2025-11-13T15:06:06","date_gmt":"2025-11-13T07:06:06","guid":{"rendered":"https:\/\/www.varidata.com\/uncategorized-zh-cn\/japan-server-intrusion-detection-tools-security-audit\/"},"modified":"2025-11-13T15:21:56","modified_gmt":"2025-11-13T07:21:56","slug":"japan-server-intrusion-detection-tools-security-audit","status":"publish","type":"post","link":"https:\/\/www.varidata.com\/zh-cn\/blog\/japan-server-intrusion-detection-tools-security-audit\/","title":{"rendered":"\u65e5\u672c\u670d\u52a1\u5668\u5165\u4fb5\u68c0\u6d4b\u5de5\u5177\u6307\u5357 &#8211; \u5b89\u5168\u5ba1\u8ba1"},"content":{"rendered":"<p>\u5728\u5feb\u901f\u53d1\u5c55\u7684\u7f51\u7edc\u5b89\u5168\u9886\u57df\uff0c<a href=\"https:\/\/www.varidata.com\/zh-cn\/server\/hk\/cn2\/\" target=\"_blank\">\u65e5\u672c\u670d\u52a1\u5668<\/a>\u5165\u4fb5\u68c0\u6d4b\u5df2\u6210\u4e3a\u7cfb\u7edf\u7ba1\u7406\u5458\u548c\u5b89\u5168\u4e13\u4e1a\u4eba\u5458\u7684\u5173\u952e\u6280\u80fd\u3002\u968f\u7740\u9488\u5bf9\u670d\u52a1\u5668\u57fa\u7840\u8bbe\u65bd\u7684<a href=\"https:\/\/www.varidata.com\/zh-cn\/knowledge\/high-defense-ip-single-point-protection-against-tb-ddos\/\" target=\"_blank\">\u7f51\u7edc\u653b\u51fb<\/a>\u65e5\u76ca\u590d\u6742\uff0c\u5b9e\u65bd\u5f3a\u5927\u7684\u68c0\u6d4b\u673a\u5236\u4e0d\u518d\u662f\u53ef\u9009\u9879 &#8211; \u800c\u662f\u5fc5\u9700\u54c1\u3002\u6700\u65b0\u7edf\u8ba1\u6570\u636e\u663e\u793a\uff0c2024\u5e74\u670d\u52a1\u5668\u5165\u4fb5\u4e8b\u4ef6\u589e\u52a0\u4e8647%\uff0c\u5e73\u5747\u68c0\u6d4b\u65f6\u95f4\u4e3a127\u5929\u3002\u66f4\u4ee4\u4eba\u62c5\u5fe7\u7684\u662f\uff0c68%\u7684\u88ab\u5165\u4fb5\u670d\u52a1\u5668\u5728\u8d85\u8fc7\u4e09\u4e2a\u6708\u5185\u90fd\u672a\u88ab\u53d1\u73b0\uff0c\u8fd9\u51f8\u663e\u4e86\u5148\u8fdb\u68c0\u6d4b\u7cfb\u7edf\u7684\u91cd\u8981\u6027\u3002<\/p>\n<h2><strong>\u521d\u59cb\u5b89\u5168\u8bc4\u4f30\u57fa\u7840<\/strong><\/h2>\n<p>\u5728\u5b9e\u65bd\u68c0\u6d4b\u5de5\u5177\u4e4b\u524d\uff0c\u5efa\u7acb\u670d\u52a1\u5668\u6b63\u5e38\u884c\u4e3a\u7684\u5168\u9762\u57fa\u51c6\u81f3\u5173\u91cd\u8981\u3002\u8fd9\u4e2a\u521d\u59cb\u8bc4\u4f30\u8fc7\u7a0b\u9700\u8981\u572872\u5c0f\u65f6\u5185\u8fdb\u884c\u7ec6\u81f4\u7684\u6587\u6863\u8bb0\u5f55\u548c\u6301\u7eed\u76d1\u63a7\uff0c\u4ee5\u6355\u83b7\u6240\u6709\u8fd0\u884c\u6a21\u5f0f\u3002\u5b89\u5168\u4e13\u5bb6\u5efa\u8bae\u5728\u9ad8\u5cf0\u671f\u548c\u4f4e\u8c37\u671f\u90fd\u8fdb\u884c\u57fa\u51c6\u8bc4\u4f30\uff0c\u4ee5\u521b\u5efa\u5b8c\u6574\u7684\u884c\u4e3a\u6863\u6848\u3002<\/p>\n<ul>\n<li>\u6388\u6743\u670d\u52a1\u548c\u7aef\u53e3\u8bb0\u5f55\n<ul>\n<li>\u4f7f\u7528netstat -tulpn\u6620\u5c04\u6240\u6709\u8fd0\u884c\u670d\u52a1<\/li>\n<li>\u8bb0\u5f55\u9884\u671f\u7aef\u53e3\u548c\u534f\u8bae<\/li>\n<li>\u521b\u5efa\u670d\u52a1\u4f9d\u8d56\u5173\u7cfb\u56fe<\/li>\n<li>\u5efa\u7acb\u6b63\u5e38\u8fde\u63a5\u6a21\u5f0f<\/li>\n<\/ul>\n<\/li>\n<li>\u521b\u5efa\u52a0\u5bc6\u6821\u9a8c\u548c\n<ul>\n<li>\u5bf9\u6240\u6709\u7cfb\u7edf\u4e8c\u8fdb\u5236\u6587\u4ef6\u4f7f\u7528SHA-256<\/li>\n<li>\u5b9e\u65bd\u81ea\u52a8\u9a8c\u8bc1\u7cfb\u7edf<\/li>\n<li>\u5728\u5b89\u5168\u79bb\u7ebf\u4f4d\u7f6e\u5b58\u50a8\u6821\u9a8c\u548c<\/li>\n<li>\u5b9a\u671f\u5b8c\u6574\u6027\u9a8c\u8bc1\u8ba1\u5212<\/li>\n<\/ul>\n<\/li>\n<li>\u7f51\u7edc\u6d41\u91cf\u57fa\u51c6\n<ul>\n<li>\u90e8\u7f72\u6d41\u91cf\u5206\u6790\u5de5\u5177<\/li>\n<li>\u8bb0\u5f55\u5cf0\u503c\u5e26\u5bbd\u4f7f\u7528\u60c5\u51b5<\/li>\n<li>\u7ed8\u5236\u5178\u578b\u6570\u636e\u6d41\u6a21\u5f0f<\/li>\n<li>\u8bc6\u522b\u6b63\u5e38\u534f\u8bae\u5206\u5e03<\/li>\n<\/ul>\n<\/li>\n<li>\u6027\u80fd\u6307\u6807\u5efa\u7acb\n<ul>\n<li>CPU\u4f7f\u7528\u6a21\u5f0f<\/li>\n<li>\u5185\u5b58\u4f7f\u7528\u914d\u7f6e<\/li>\n<li>I\/O\u64cd\u4f5c\u57fa\u51c6<\/li>\n<li>\u7f51\u7edc\u541e\u5410\u91cf\u6307\u6807<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2><strong>\u57fa\u7840\u68c0\u6d4b\u5de5\u5177\u5e93<\/strong><\/h2>\n<p>\u73b0\u4ee3\u670d\u52a1\u5668\u5b89\u5168\u9700\u8981\u7ed3\u5408\u591a\u79cd\u68c0\u6d4b\u673a\u5236\u7684\u590d\u6742\u5de5\u5177\u5305\u3002\u6839\u636e\u6700\u65b0\u5b89\u5168\u5ba1\u8ba1\u663e\u793a\uff0c\u91c7\u7528\u7efc\u5408\u5de5\u5177\u5957\u4ef6\u7684\u670d\u52a1\u5668\u6bd4\u4f7f\u7528\u5355\u4e00\u5de5\u5177\u65b9\u6cd5\u7684\u670d\u52a1\u5668\u8868\u73b0\u51fa76%\u66f4\u597d\u7684\u5165\u4fb5\u68c0\u6d4b\u7387\u3002\u4ee5\u4e0b\u662f\u60a8\u7684\u57fa\u672c\u5b89\u5168\u5de5\u5177\u5305\uff1a<\/p>\n<ol>\n<li>Rkhunter (Rootkit\u730e\u624b)\n<ul>\n<li>\u9ad8\u7ea7rootkit\u68c0\u6d4b\u529f\u80fd\n<pre><code># \u914d\u7f6e\u6bcf\u65e5\u626b\u63cf\r\nCRON_DAILY_RUN=\"yes\"\r\nCRON_DB_UPDATE=\"yes\"\r\nALLOW_SSH_ROOT_USER=no\r\nALLOW_SSH_PROT_V1=0\r\nENABLE_TESTS=\"all\"<\/code><\/pre>\n<\/li>\n<li>\u5168\u9762\u7684\u6587\u4ef6\u7cfb\u7edf\u626b\u63cf\n<ul>\n<li>\u5185\u6838\u6a21\u5757\u9a8c\u8bc1<\/li>\n<li>\u9690\u85cf\u8fdb\u7a0b\u68c0\u6d4b<\/li>\n<li>\u53ef\u7591\u6587\u4ef6\u8bc6\u522b<\/li>\n<\/ul>\n<\/li>\n<li>\u81ea\u5b9a\u4e49\u89c4\u5219\u5b9e\u65bd\n<ul>\n<li>\u8def\u5f84\u7279\u5b9a\u68c0\u67e5<\/li>\n<li>\u5df2\u77e5\u6076\u610f\u8f6f\u4ef6\u7b7e\u540d<\/li>\n<li>\u884c\u4e3a\u6a21\u5f0f<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<li>Lynis\u5b89\u5168\u5ba1\u8ba1\u5de5\u5177\n<ul>\n<li>\u5168\u9762\u7684\u7cfb\u7edf\u52a0\u56fa\n<pre><code># \u589e\u5f3a\u578bLynis\u914d\u7f6e\r\nconfig:\r\n  quick_mode: false\r\n  skip_plugins: []\r\n  plugin_dir: \/usr\/local\/lynis\/plugins\r\n  log_file: \/var\/log\/lynis-detailed.log\r\n  report_file: \/var\/log\/lynis-report.dat\r\n  show_warnings_only: false<\/code><\/pre>\n<\/li>\n<li>\u9ad8\u7ea7\u626b\u63cf\u529f\u80fd\n<ul>\n<li>\u6587\u4ef6\u6743\u9650\u5ba1\u8ba1<\/li>\n<li>\u5b89\u5168\u8865\u4e01\u9a8c\u8bc1<\/li>\n<li>\u7f51\u7edc\u914d\u7f6e\u5206\u6790<\/li>\n<li>PCI-DSS\u3001HIPAA\u5408\u89c4\u6027\u6d4b\u8bd5<\/li>\n<\/ul>\n<\/li>\n<li>\u6027\u80fd\u4f18\u5316\u8bbe\u7f6e\n<ul>\n<li>\u8d44\u6e90\u4f7f\u7528\u76d1\u63a7<\/li>\n<li>\u7cfb\u7edf\u8c03\u7528\u5206\u6790<\/li>\n<li>\u8fdb\u7a0b\u884c\u4e3a\u8ddf\u8e2a<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>AIDE (\u9ad8\u7ea7\u5165\u4fb5\u68c0\u6d4b\u73af\u5883)\n<ul>\n<li>\u5b9e\u65f6\u6587\u4ef6\u7cfb\u7edf\u76d1\u63a7\n<pre><code># AIDE\u914d\u7f6e\u793a\u4f8b\r\n\/etc NORMAL\r\n\/bin NORMAL+b+sha512\r\n\/sbin NORMAL+b+sha512\r\n\/var\/log LOG+ANF+SHA512\r\n!\/var\/log\/aide.log\r\n\/boot NORMAL+b+sha512<\/code><\/pre>\n<\/li>\n<li>\u9ad8\u7ea7\u5b8c\u6574\u6027\u9a8c\u8bc1\n<ul>\n<li>\u591a\u91cd\u54c8\u5e0c\u7b97\u6cd5\u652f\u6301<\/li>\n<li>\u589e\u91cf\u6570\u636e\u5e93\u66f4\u65b0<\/li>\n<li>\u53ef\u914d\u7f6e\u76d1\u63a7\u89c4\u5219<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<h2><strong>\u9ad8\u7ea7\u7f51\u7edc\u76d1\u63a7\u6280\u672f<\/strong><\/h2>\n<p>\u7f51\u7edc\u5c42\u9762\u7684\u5165\u4fb5\u68c0\u6d4b\u9700\u8981\u590d\u6742\u7684\u76d1\u63a7\u5de5\u5177\u548c\u5b9e\u65f6\u5206\u6790\u80fd\u529b\u3002\u73b0\u4ee3\u5a01\u80c1\u7ecf\u5e38\u5229\u7528\u7f51\u7edc\u6f0f\u6d1e\uff0c\u8fd9\u4f7f\u5f97\u5168\u9762\u76d1\u63a7\u53d8\u5f97\u81f3\u5173\u91cd\u8981\u3002\u6700\u65b0\u7814\u7a76\u8868\u660e\uff0c73%\u7684\u6210\u529f\u5165\u4fb5\u5728\u7cfb\u7edf\u53d7\u635f\u524d\u90fd\u8868\u73b0\u4e3a\u7f51\u7edc\u5f02\u5e38\u3002<\/p>\n<ol>\n<li>\u914d\u5907\u9ad8\u7ea7NSE\u811a\u672c\u7684Nmap\n<pre><code># \u9ad8\u7ea7Nmap\u626b\u63cf\u6a21\u677f\r\nnmap -sS -sV -p- --script=\"default,safe,vuln\" \\\r\n     --script-args=unsafe=1 \\\r\n     --open \\\r\n     --reason \\\r\n     -oA full_scan_$(date +%F) \\\r\n     -T4 target_host<\/code><\/pre>\n<ul>\n<li>\u81ea\u5b9a\u4e49\u626b\u63cf\u914d\u7f6e\n<ul>\n<li>\u670d\u52a1\u7248\u672c\u68c0\u6d4b<\/li>\n<li>\u64cd\u4f5c\u7cfb\u7edf\u6307\u7eb9\u8bc6\u522b<\/li>\n<li>\u6f0f\u6d1e\u8bc4\u4f30<\/li>\n<li>\u57fa\u4e8e\u811a\u672c\u7684\u5b89\u5168\u68c0\u67e5<\/li>\n<\/ul>\n<\/li>\n<li>\u81ea\u52a8\u5316\u626b\u63cf\u8ba1\u5212\n<ul>\n<li>\u6bcf\u65e5\u7aef\u53e3\u72b6\u6001\u9a8c\u8bc1<\/li>\n<li>\u6bcf\u5468\u5168\u9762\u626b\u63cf<\/li>\n<li>\u6bcf\u6708\u6f0f\u6d1e\u8bc4\u4f30<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>Wireshark\u7f51\u7edc\u5206\u6790\n<ul>\n<li>\u9ad8\u7ea7\u6355\u83b7\u8fc7\u6ee4\u5668\n<pre><code># \u53ef\u7591\u6d41\u91cf\u6355\u83b7\u8fc7\u6ee4\u5668\r\ntcp port not 22 and not 80 and not 443 and ip host target_ip\r\ntcp.flags.syn == 1 and tcp.flags.ack == 0\r\n<\/code><\/pre>\n<\/li>\n<li>\u6d41\u91cf\u6a21\u5f0f\u5206\u6790\n<ul>\n<li>\u534f\u8bae\u5f02\u5e38\u68c0\u6d4b<\/li>\n<li>\u52a0\u5bc6\u6d41\u91cf\u5206\u6790<\/li>\n<li>\u6570\u636e\u5916\u6cc4\u76d1\u63a7<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<h2><strong>\u81ea\u52a8\u5316\u5b89\u5168\u5ba1\u8ba1\u5b9e\u65bd<\/strong><\/h2>\n<p>\u81ea\u52a8\u5316\u5bf9\u4e8e\u7ef4\u6301\u6301\u7eed\u7684\u5b89\u5168\u76d1\u63a7\u81f3\u5173\u91cd\u8981\u3002\u7814\u7a76\u8868\u660e\uff0c\u81ea\u52a8\u5316\u5b89\u5168\u7cfb\u7edf\u6bd4\u4eba\u5de5\u76d1\u63a7\u5feb47%\u68c0\u6d4b\u5230\u5a01\u80c1\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u5168\u9762\u7684\u81ea\u52a8\u5316\u6846\u67b6\uff1a<\/p>\n<pre><code>#!\/bin\/bash\r\n# \u9ad8\u7ea7\u5b89\u5168\u5ba1\u8ba1\u81ea\u52a8\u5316\u811a\u672c\r\n# \u7248\u672c: 2.1.0\r\n\r\n# \u914d\u7f6e\r\nLOGFILE=\"\/var\/log\/security_audit.log\"\r\nREPORT_DIR=\"\/var\/security\/reports\"\r\nALERT_EMAIL=\"security@yourdomain.com\"\r\nDATE=$(date '+%Y-%m-%d %H:%M:%S')\r\n\r\n# \u51fd\u6570\u5b9a\u4e49\r\ncheck_system_integrity() {\r\n    echo \"=== \u7cfb\u7edf\u5b8c\u6574\u6027\u68c0\u67e5: $DATE ===\" >> $LOGFILE\r\n    aide --check | tee -a $LOGFILE\r\n    if [ $? -ne 0 ]; then\r\n        send_alert \"AIDE\u68c0\u67e5\u5931\u8d25\"\r\n    fi\r\n}\r\n\r\nrun_rootkit_scan() {\r\n    echo \"=== Rootkit\u626b\u63cf: $DATE ===\" >> $LOGFILE\r\n    rkhunter --check --skip-keypress --report-warnings-only | tee -a $LOGFILE\r\n    chkrootkit | tee -a $LOGFILE\r\n}\r\n\r\nsecurity_audit() {\r\n    echo \"=== \u5b89\u5168\u5ba1\u8ba1\u5f00\u59cb: $DATE ===\" >> $LOGFILE\r\n    lynis audit system --quick >> $LOGFILE\r\n    analyze_logs\r\n    check_system_integrity\r\n    run_rootkit_scan\r\n    generate_report\r\n}\r\n\r\n# \u4e3b\u6267\u884c\r\nsecurity_audit<\/code><\/pre>\n<p>\u6309\u4ee5\u4e0b\u8ba1\u5212\u5b9e\u65bd\u81ea\u52a8\u5316\uff1a<\/p>\n<ul>\n<li>\u5173\u952e\u68c0\u67e5\uff08\u6bcf4\u5c0f\u65f6\uff09\n<ul>\n<li>\u8fdb\u7a0b\u5217\u8868\u9a8c\u8bc1<\/li>\n<li>\u7f51\u7edc\u8fde\u63a5\u5206\u6790<\/li>\n<li>\u7cfb\u7edf\u8d1f\u8f7d\u76d1\u63a7<\/li>\n<\/ul>\n<\/li>\n<li>\u6bcf\u65e5\u68c0\u67e5\n<ul>\n<li>\u6587\u4ef6\u5b8c\u6574\u6027\u9a8c\u8bc1<\/li>\n<li>\u65e5\u5fd7\u5206\u6790\u548c\u5f02\u5e38\u68c0\u6d4b<\/li>\n<li>\u7528\u6237\u6d3b\u52a8\u76d1\u63a7<\/li>\n<\/ul>\n<\/li>\n<li>\u6bcf\u5468\u5168\u9762\u5ba1\u8ba1\n<ul>\n<li>\u5b8c\u6574\u7cfb\u7edf\u5b89\u5168\u626b\u63cf<\/li>\n<li>\u914d\u7f6e\u504f\u5dee\u68c0\u6d4b<\/li>\n<li>\u5408\u89c4\u6027\u9a8c\u8bc1<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2><strong>\u5b9e\u65f6\u5165\u4fb5\u68c0\u6d4b\u7b56\u7565<\/strong><\/h2>\n<p>\u73b0\u4ee3\u5b89\u5168\u9700\u8981\u590d\u6742\u7684\u5b9e\u65f6\u76d1\u63a7\u80fd\u529b\u3002\u6700\u65b0\u6570\u636e\u663e\u793a\uff0c\u5b9e\u65f6\u68c0\u6d4b\u7cfb\u7edf\u5c06\u5e73\u5747\u6f0f\u6d1e\u68c0\u6d4b\u65f6\u95f4\u4ece127\u5929\u7f29\u77ed\u5230\u4ec56\u5c0f\u65f6\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u5168\u9762\u7684\u5b9e\u65f6\u76d1\u63a7\u6846\u67b6\uff1a<\/p>\n<ol>\n<li>\u9ad8\u7ea7\u65e5\u5fd7\u5206\u6790\u914d\u7f6e\n<pre><code># Logstash\u5b89\u5168\u4e8b\u4ef6\u914d\u7f6e\r\ninput {\r\n  file {\r\n    path => \"\/var\/log\/auth.log\"\r\n    type => \"syslog\"\r\n    tags => [\"auth\"]\r\n  }\r\n  file {\r\n    path => \"\/var\/log\/nginx\/access.log\"\r\n    type => \"nginx\"\r\n    tags => [\"web\"]\r\n  }\r\n}\r\n\r\nfilter {\r\n  if [type] == \"syslog\" {\r\n    grok {\r\n      match => { \"message\" => \"%{SYSLOGBASE} %{GREEDYDATA:message}\" }\r\n    }\r\n    if [message] =~ \"Failed password\" {\r\n      mutate {\r\n        add_tag => [\"suspicious_login\"]\r\n      }\r\n    }\r\n  }\r\n}<\/code><\/pre>\n<ul>\n<li>\u5b9e\u65f6\u544a\u8b66\u914d\u7f6e<\/li>\n<li>\u6a21\u5f0f\u5339\u914d\u89c4\u5219<\/li>\n<li>\u5f02\u5e38\u68c0\u6d4b\u9608\u503c<\/li>\n<\/ul>\n<\/li>\n<li>\u7cfb\u7edf\u8c03\u7528\u76d1\u63a7\u8bbe\u7f6e\n<ul>\n<li>Auditd\u9ad8\u7ea7\u914d\u7f6e\n<pre><code># \u589e\u5f3a\u578b\u5ba1\u8ba1\u89c4\u5219\r\n-a exit,always -F arch=b64 -S execve -k exec_commands\r\n-w \/etc\/passwd -p wa -k identity\r\n-w \/etc\/shadow -p wa -k identity\r\n-w \/etc\/sudoers -p wa -k identity\r\n-w \/var\/log\/auth.log -p wa -k auth_log<\/code><\/pre>\n<\/li>\n<li>\u8fdb\u7a0b\u884c\u4e3a\u5206\u6790<\/li>\n<li>\u8d44\u6e90\u4f7f\u7528\u8ddf\u8e2a<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<h2><strong>\u4e8b\u4ef6\u54cd\u5e94\u548c\u6062\u590d<\/strong><\/h2>\n<p>\u5f53\u68c0\u6d4b\u5230\u5165\u4fb5\u65f6\uff0c\u4e89\u5206\u593a\u79d2\u81f3\u5173\u91cd\u8981\u3002\u6839\u636e\u5b89\u5168\u7814\u7a76\uff0c\u62e5\u6709\u5b8c\u5584\u6587\u6863\u8bb0\u5f55\u7684\u4e8b\u4ef6\u54cd\u5e94\u8ba1\u5212\u7684\u7ec4\u7ec7\u53ef\u4ee5\u5c06\u5165\u4fb5\u6210\u672c\u964d\u4f4e54%\u3002\u4ee5\u4e0b\u662f\u60a8\u7684\u6280\u672f\u4e8b\u4ef6\u54cd\u5e94\u6846\u67b6\uff1a<\/p>\n<ol>\n<li>\u5373\u65f6\u904f\u5236\u7a0b\u5e8f\n<pre><code># \u5e94\u6025\u904f\u5236\u811a\u672c\r\n#!\/bin\/bash\r\n# \u4e8b\u4ef6\u904f\u5236\u811a\u672c v1.2\r\n\r\n# \u7ec8\u6b62\u53ef\u7591\u8fdb\u7a0b\r\nkill_suspicious_procs() {\r\n    lsof -i | grep ESTABLISHED | grep -v LISTENING | awk '{print $2}' | xargs kill -9\r\n}\r\n\r\n# \u7f51\u7edc\u9694\u79bb\r\nisolate_system() {\r\n    iptables -P INPUT DROP\r\n    iptables -P OUTPUT DROP\r\n    iptables -P FORWARD DROP\r\n    iptables -A INPUT -i lo -j ACCEPT\r\n    iptables -A OUTPUT -o lo -j ACCEPT\r\n}\r\n\r\n# \u521b\u5efa\u5185\u5b58\u8f6c\u50a8\r\nmemory_capture() {\r\n    date_stamp=$(date +%Y%m%d_%H%M%S)\r\n    lime-linux-x64.exe format=raw output=\/forensics\/mem_dump_$date_stamp.raw\r\n}<\/code><\/pre>\n<ul>\n<li>\u7f51\u7edc\u9694\u79bb\u7a0b\u5e8f\n<ul>\n<li>\u7d27\u6025\u9632\u706b\u5899\u89c4\u5219<\/li>\n<li>\u670d\u52a1\u7ec8\u6b62\u5e8f\u5217<\/li>\n<li>\u5907\u4efd\u7f51\u7edc\u914d\u7f6e<\/li>\n<\/ul>\n<\/li>\n<li>\u8bc1\u636e\u4fdd\u5168\u6b65\u9aa4\n<ul>\n<li>\u5185\u5b58\u8f6c\u50a8\u521b\u5efa<\/li>\n<li>\u7f51\u7edc\u6d41\u91cf\u6355\u83b7<\/li>\n<li>\u7cfb\u7edf\u72b6\u6001\u6587\u6863<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<h2><strong>\u9ad8\u7ea7\u7cfb\u7edf\u52a0\u56fa\u6280\u672f<\/strong><\/h2>\n<p>\u4e3b\u52a8\u7cfb\u7edf\u52a0\u56fa\u53ef\u5c06\u5165\u4fb5\u98ce\u9669\u964d\u4f4e\u9ad8\u8fbe85%\u3002\u5b9e\u65bd\u4ee5\u4e0b\u9ad8\u7ea7\u52a0\u56fa\u63aa\u65bd\uff1a<\/p>\n<pre><code># \u5185\u6838\u52a0\u56fa\u53c2\u6570\r\nkernel.randomize_va_space=2\r\nkernel.kptr_restrict=2\r\nkernel.dmesg_restrict=1\r\nkernel.yama.ptrace_scope=2\r\nnet.ipv4.conf.all.rp_filter=1\r\nnet.ipv4.conf.all.accept_redirects=0\r\nnet.ipv6.conf.all.accept_redirects=0\r\n\r\n# SSH\u52a0\u56fa\u914d\u7f6e\r\nProtocol 2\r\nPermitRootLogin no\r\nMaxAuthTries 3\r\nPubkeyAuthentication yes\r\nPasswordAuthentication no\r\nPermitEmptyPasswords no\r\nX11Forwarding no\r\nAllowTcpForwarding no<\/code><\/pre>\n<ul>\n<li>\u9ad8\u7ea7SELinux\u7b56\u7565\n<ul>\n<li>\u81ea\u5b9a\u4e49\u5b89\u5168\u4e0a\u4e0b\u6587<\/li>\n<li>\u5f3a\u5236\u8bbf\u95ee\u63a7\u5236<\/li>\n<li>\u8fdb\u7a0b\u9694\u79bb\u89c4\u5219<\/li>\n<\/ul>\n<\/li>\n<li>\u6587\u4ef6\u7cfb\u7edf\u5b89\u5168\n<ul>\n<li>\u6269\u5c55\u5c5e\u6027\u5b9e\u65bd<\/li>\n<li>\u8bbf\u95ee\u63a7\u5236\u5217\u8868<\/li>\n<li>\u5173\u952e\u6587\u4ef6\u4e0d\u53ef\u53d8\u6807\u5fd7<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2><strong>\u6027\u80fd\u4f18\u5316\u548c\u76d1\u63a7<\/strong><\/h2>\n<p>\u5b89\u5168\u5de5\u5177\u53ef\u80fd\u5f71\u54cd\u7cfb\u7edf\u6027\u80fd\u3002\u4ee5\u4e0b\u662f\u4f18\u5316\u5b89\u5168\u76d1\u63a7\u7684\u65b9\u6cd5\uff1a<\/p>\n<pre><code># \u8d44\u6e90\u5229\u7528\u7387\u76d1\u63a7\r\n#!\/bin\/bash\r\n# \u5b89\u5168\u5de5\u5177\u6027\u80fd\u76d1\u63a7\u5668\r\n\r\ncheck_resource_usage() {\r\n    ps aux | awk '$11~\/rkhunter|aide|lynis\/ {print $2,$3,$4,$11}' >> \/var\/log\/security_perf.log\r\n    iostat -x 1 5 >> \/var\/log\/security_perf.log\r\n}\r\n\r\n# CPU\u5bc6\u96c6\u626b\u63cf\u7684\u4f18\u5148\u7ea7\u8c03\u6574\r\nnice -n 19 rkhunter --check\r\nionice -c2 -n7 aide --check<\/code><\/pre>\n<h2><strong>\u7ed3\u8bba<\/strong><\/h2>\n<p>\u6709\u6548\u7684\u670d\u52a1\u5668\u5b89\u5168\u9700\u8981\u5728\u5168\u9762\u76d1\u63a7\u548c\u7cfb\u7edf\u6027\u80fd\u4e4b\u95f4\u4fdd\u6301\u5e73\u8861\u3002\u901a\u8fc7\u5b9e\u65bd\u8fd9\u4e9b\u9ad8\u7ea7\u68c0\u6d4b\u673a\u5236\u3001\u81ea\u52a8\u5316\u5b89\u5168\u5ba1\u8ba1\u548c\u4e8b\u4ef6\u54cd\u5e94\u7a0b\u5e8f\uff0c\u60a8\u6b63\u5728\u5efa\u7acb\u9488\u5bf9\u73b0\u4ee3\u7f51\u7edc\u5a01\u80c1\u7684\u5f3a\u5927\u9632\u5fa1\u3002\u5b9a\u671f\u5b89\u5168\u5ba1\u8ba1\uff0c\u7ed3\u5408\u81ea\u52a8\u5316\u76d1\u63a7\u5de5\u5177\uff0c\u5bf9\u7ef4\u62a4\u670d\u52a1\u5668\u79df\u7528\u57fa\u7840\u8bbe\u65bd\u7684\u5b8c\u6574\u6027\u81f3\u5173\u91cd\u8981\u3002\u4fdd\u6301\u8b66\u60d5\uff0c\u786e\u4fdd\u5b89\u5168\u5de5\u5177\u4fdd\u6301\u66f4\u65b0\uff0c\u5e76\u5b9a\u671f\u6d4b\u8bd5\u60a8\u7684\u4e8b\u4ef6\u54cd\u5e94\u7a0b\u5e8f\uff0c\u4ee5\u786e\u4fdd\u9488\u5bf9\u4e0d\u65ad\u6f14\u53d8\u7684\u5a01\u80c1\u83b7\u5f97\u6700\u4f73\u4fdd\u62a4\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u5feb\u901f\u53d1\u5c55\u7684\u7f51\u7edc\u5b89\u5168\u9886\u57df\uff0c\u65e5\u672c\u670d\u52a1\u5668\u5165\u4fb5\u68c0\u6d4b\u5df2\u6210\u4e3a\u7cfb\u7edf\u7ba1\u7406\u5458\u548c\u5b89\u5168\u4e13\u4e1a\u4eba\u5458\u7684\u5173\u952e\u6280\u80fd\u3002\u968f\u7740\u9488\u5bf9\u670d\u52a1\u5668\u57fa\u7840\u8bbe\u65bd\u7684\u7f51\u7edc\u653b\u51fb\u65e5\u76ca\u590d\u6742\uff0c\u5b9e\u65bd\u5f3a\u5927\u7684\u68c0\u6d4b\u673a\u5236\u4e0d\u518d\u662f\u53ef\u9009\u9879 &#8211; \u800c\u662f\u5fc5\u9700\u54c1\u3002\u6700\u65b0\u7edf\u8ba1\u6570\u636e\u663e\u793a\uff0c2024\u5e74\u670d\u52a1\u5668\u5165\u4fb5\u4e8b\u4ef6\u589e\u52a0\u4e8647%\uff0c\u5e73\u5747\u68c0\u6d4b\u65f6\u95f4\u4e3a127\u5929\u3002\u66f4\u4ee4\u4eba\u62c5\u5fe7\u7684\u662f\uff0c68%\u7684\u88ab\u5165\u4fb5\u670d\u52a1\u5668\u5728\u8d85\u8fc7\u4e09\u4e2a\u6708\u5185\u90fd\u672a\u88ab\u53d1\u73b0\uff0c\u8fd9\u51f8\u663e\u4e86\u5148\u8fdb\u68c0\u6d4b\u7cfb\u7edf\u7684\u91cd\u8981\u6027\u3002 \u521d\u59cb\u5b89\u5168\u8bc4\u4f30\u57fa\u7840 \u5728\u5b9e\u65bd\u68c0\u6d4b\u5de5\u5177\u4e4b\u524d\uff0c\u5efa\u7acb\u670d\u52a1\u5668\u6b63\u5e38\u884c\u4e3a\u7684\u5168\u9762\u57fa\u51c6\u81f3\u5173\u91cd\u8981\u3002\u8fd9\u4e2a\u521d\u59cb\u8bc4\u4f30\u8fc7\u7a0b\u9700\u8981\u572872\u5c0f\u65f6\u5185\u8fdb\u884c\u7ec6\u81f4\u7684\u6587\u6863\u8bb0\u5f55\u548c\u6301\u7eed\u76d1\u63a7\uff0c\u4ee5\u6355\u83b7\u6240\u6709\u8fd0\u884c\u6a21\u5f0f\u3002\u5b89\u5168\u4e13\u5bb6\u5efa\u8bae\u5728\u9ad8\u5cf0\u671f\u548c\u4f4e\u8c37\u671f\u90fd\u8fdb\u884c\u57fa\u51c6\u8bc4\u4f30\uff0c\u4ee5\u521b\u5efa\u5b8c\u6574\u7684\u884c\u4e3a\u6863\u6848\u3002 \u6388\u6743\u670d\u52a1\u548c\u7aef\u53e3\u8bb0\u5f55 \u4f7f\u7528netstat -tulpn\u6620\u5c04\u6240\u6709\u8fd0\u884c\u670d\u52a1 \u8bb0\u5f55\u9884\u671f\u7aef\u53e3\u548c\u534f\u8bae \u521b\u5efa\u670d\u52a1\u4f9d\u8d56\u5173\u7cfb\u56fe \u5efa\u7acb\u6b63\u5e38\u8fde\u63a5\u6a21\u5f0f \u521b\u5efa\u52a0\u5bc6\u6821\u9a8c\u548c \u5bf9\u6240\u6709\u7cfb\u7edf\u4e8c\u8fdb\u5236\u6587\u4ef6\u4f7f\u7528SHA-256 \u5b9e\u65bd\u81ea\u52a8\u9a8c\u8bc1\u7cfb\u7edf \u5728\u5b89\u5168\u79bb\u7ebf\u4f4d\u7f6e\u5b58\u50a8\u6821\u9a8c\u548c \u5b9a\u671f\u5b8c\u6574\u6027\u9a8c\u8bc1\u8ba1\u5212 \u7f51\u7edc\u6d41\u91cf\u57fa\u51c6 \u90e8\u7f72\u6d41\u91cf\u5206\u6790\u5de5\u5177 \u8bb0\u5f55\u5cf0\u503c\u5e26\u5bbd\u4f7f\u7528\u60c5\u51b5 \u7ed8\u5236\u5178\u578b\u6570\u636e\u6d41\u6a21\u5f0f \u8bc6\u522b\u6b63\u5e38\u534f\u8bae\u5206\u5e03 \u6027\u80fd\u6307\u6807\u5efa\u7acb CPU\u4f7f\u7528\u6a21\u5f0f \u5185\u5b58\u4f7f\u7528\u914d\u7f6e I\/O\u64cd\u4f5c\u57fa\u51c6 \u7f51\u7edc\u541e\u5410\u91cf\u6307\u6807 \u57fa\u7840\u68c0\u6d4b\u5de5\u5177\u5e93 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