{"id":20332,"date":"2026-08-04T18:24:16","date_gmt":"2026-08-04T16:24:16","guid":{"rendered":"https:\/\/webhosting.de\/linux-auditd-sicherheitsereignisse-richtig-protokollieren-securetrail\/"},"modified":"2026-08-04T18:24:16","modified_gmt":"2026-08-04T16:24:16","slug":"linux-auditd-%e3%81%ab%e3%82%88%e3%82%8b%e3%82%bb%e3%82%ad%e3%83%a5%e3%83%aa%e3%83%86%e3%82%a3%e3%82%a4%e3%83%99%e3%83%b3%e3%83%88%e3%81%ae%e9%81%a9%e5%88%87%e3%81%aa%e3%83%ad%e3%82%b0%e8%a8%98","status":"publish","type":"post","link":"https:\/\/webhosting.de\/ja\/linux-auditd-sicherheitsereignisse-richtig-protokollieren-securetrail\/","title":{"rendered":"Linux Auditd \u2013 \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30a4\u30d9\u30f3\u30c8\u3092\u9069\u5207\u306b\u8a18\u9332\u3059\u308b"},"content":{"rendered":"<p><strong>Linux Auditd<\/strong> \u30ab\u30fc\u30cd\u30eb\u304b\u3089\u76f4\u63a5\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u95a2\u9023\u306e\u30a4\u30d9\u30f3\u30c8\u3092\u8a18\u9332\u3057\u3001\u30ed\u30b0\u30a4\u30f3\u3001\u30d5\u30a1\u30a4\u30eb\u306e\u5909\u66f4\u3001\u30b3\u30de\u30f3\u30c9\u306e\u5b9f\u884c\u3001\u30b7\u30b9\u30c6\u30e0\u547c\u3073\u51fa\u3057\u306b\u95a2\u3059\u308b\u5b8c\u5168\u306a\u76e3\u67fb\u8a3c\u8de1\u3092\u63d0\u4f9b\u3057\u3066\u304f\u308c\u307e\u3059\u3002. <strong>\u6b63\u3057\u3044<\/strong> \u8a2d\u5b9a\u3092\u884c\u3046\u3053\u3068\u3067\u3001\u653b\u6483\u3092\u65e9\u671f\u306b\u691c\u77e5\u3057\u3001ISO 27001\u3084PCI DSS\u306a\u3069\u306e\u30b3\u30f3\u30d7\u30e9\u30a4\u30a2\u30f3\u30b9\u8981\u4ef6\u3092\u6e80\u305f\u3057\u3001\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u3092\u30d5\u30a9\u30ec\u30f3\u30b8\u30c3\u30af\u7684\u306b\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u65b9\u6cd5\u3067\u5206\u6790\u3057\u307e\u3059\u3002.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/08\/linux-auditd-desk-4821.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u4e2d\u5fc3\u70b9<\/h2>\n\n<p><strong>\u6b64\u308c<\/strong> \u6982\u8981\u306b\u3064\u3044\u3066\u306f\u3001\u76e3\u67fb\u30eb\u30fc\u30eb\u306e\u5b9a\u7fa9\u65b9\u6cd5\u3001\u30ed\u30b0\u306e\u4fdd\u8b77\u65b9\u6cd5\u3001\u305d\u3057\u3066\u77e5\u898b\u306e\u5c0e\u304d\u51fa\u3057\u65b9\u3092\u3059\u3050\u306b\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u3001\u3042\u3048\u3066\u7c21\u6f54\u304b\u3064\u5b9f\u8df5\u7684\u306b\u3001\u6c7a\u307e\u308a\u6587\u53e5\u3092\u6392\u3057\u3066\u307e\u3068\u3081\u3066\u3044\u307e\u3059\u3002. <strong>I<\/strong> \u4e3b\u8981\u306a\u69cb\u6210\u8981\u7d20\u3001\u4ee3\u8868\u7684\u306a\u4f7f\u7528\u4f8b\u3001\u6709\u7528\u306a\u30eb\u30fc\u30eb\u3001\u304a\u3088\u3073\u591a\u304f\u306e\u74b0\u5883\u306b\u304a\u3044\u3066\u898b\u843d\u3068\u3055\u308c\u304c\u3061\u306a\u554f\u984c\u70b9\u3092\u6319\u3052\u306a\u3055\u3044\u3002. <strong>\u7136\u308c\u3070<\/strong> auditd.conf \u306e\u3069\u306e\u8a2d\u5b9a\u304c\u6709\u52b9\u304b\u3001\u307e\u305f\u5206\u6790\u306b\u5229\u7528\u3067\u304d\u308b\u30c4\u30fc\u30eb\u304c\u3069\u308c\u304b\u3001\u4e00\u76ee\u3067\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002. <strong>\u305d\u306e\u5f8c<\/strong> \u5404\u30c6\u30fc\u30de\u306b\u3064\u3044\u3066\u3001\u5177\u4f53\u4f8b\u3084\u660e\u78ba\u306a\u63a8\u5968\u4e8b\u9805\u3001\u305d\u3057\u3066\u91cd\u8981\u306a\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u307e\u3068\u3081\u305f\u8868\u3092\u7528\u3044\u3066\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u3002. <strong>\u3060\u304b\u3089<\/strong> \u300cAuditd\u304c\u52d5\u4f5c\u3057\u3066\u3044\u308b\u300d\u72b6\u614b\u304b\u3089\u3001\u300cAuditd\u304c\u5b9f\u7528\u7684\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b7\u30b0\u30ca\u30eb\u3092\u63d0\u4f9b\u3057\u3066\u3044\u308b\u300d\u72b6\u614b\u3078\u3068\u79fb\u884c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002.<\/p>\n<ul>\n  <li><strong>\u76e3\u67fb\u8a3c\u8de1<\/strong>: \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306b\u95a2\u9023\u3059\u308b\u30a2\u30af\u30b7\u30e7\u30f3\u306e\u5b8c\u5168\u306a\u8ffd\u8de1\u53ef\u80fd\u6027<\/li>\n  <li><strong>\u30eb\u30fc\u30eb<\/strong>: \u7279\u5b9a\u306e\u91cd\u8981\u306a\u30d5\u30a1\u30a4\u30eb\u3001execve\u3001\u6a29\u9650\u3001\u304a\u3088\u3073\u8a2d\u5b9a<\/li>\n  <li><strong>\u30ed\u30b0\u4fdd\u8b77<\/strong>: \u30ed\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\u3001\u30e1\u30e2\u30ea\u30c8\u30ea\u30ac\u30fc\u3001\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u6642\u306e\u5bfe\u5fdc<\/li>\n  <li><strong>\u30ea\u30e2\u30fc\u30c8<\/strong>: TCP\/TLS \u306b\u3088\u308b\u4e00\u5143\u7684\u306a\u53ce\u96c6\u304a\u3088\u3073 SIEM \u3068\u306e\u9023\u643a<\/li>\n  <li><strong>\u5206\u6790<\/strong>: ausearch\u3001aureport\u3001\u660e\u78ba\u306a\u30ad\u30fc\u3001\u305d\u3057\u3066\u6574\u7136\u3068\u3057\u305f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8<\/li>\n<\/ul>\n\n<h2>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u306b\u304a\u3051\u308bLinux Auditd<\/h2>\n\n<p><strong>Auditd<\/strong> \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306b\u95a2\u9023\u3059\u308b\u30a2\u30af\u30b7\u30e7\u30f3\u306b\u7684\u3092\u7d5e\u308a\u3001\u30ab\u30fc\u30cd\u30eb\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u4ecb\u3057\u3066\u30a4\u30d9\u30f3\u30c8\u3092\u8a18\u9332\u3059\u308b\u3053\u3068\u3067\u3001\u5f93\u6765\u306e\u30b7\u30b9\u30c6\u30e0\u30ed\u30b0\u3092\u88dc\u5b8c\u3057\u307e\u3059\u3002. <strong>\u4edd<\/strong> Daemon\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u3053\u308c\u3089\u306e\u30a4\u30d9\u30f3\u30c8\u3092\u4ee5\u4e0b\u306e\u5834\u6240\u306b\u66f8\u304d\u8fbc\u307f\u307e\u3059 <code>\/var\/log\/audit\/audit.log<\/code> \u307e\u305f\u3001\u3069\u306e\u30e6\u30fc\u30b6\u30fc\u304c\u3001\u3069\u306e\u64cd\u4f5c\u3092\u3001\u3044\u3064\u5b9f\u884c\u3057\u305f\u304b\u3092\u8a18\u9332\u3057\u307e\u3059\u3002. <strong>\u305d\u306e\u7d50\u679c\u3001<\/strong> \u7591\u308f\u3057\u3044\u70b9\u3092\u7d20\u65e9\u304f\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u610f\u56f3\u3057\u306a\u3044\u5909\u66f4\u304c <code>\/etc\/ssh\/sshd_config<\/code> \u3042\u308b\u3044\u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u6a5f\u5bc6\u6027\u306e\u9ad8\u3044\u30d5\u30a1\u30a4\u30eb\u306a\u3069 <code>\/etc\/shadow<\/code>. <strong>\u6642\u70b9\u3067\u306f<\/strong> \u898f\u5236\u5bfe\u8c61\u306e\u74b0\u5883\u306b\u304a\u3044\u3066\u3001\u3053\u308c\u306b\u3088\u308a\u30dd\u30ea\u30b7\u30fc\u9055\u53cd\u306e\u8a3c\u62e0\u3092\u78ba\u4fdd\u3057\u3001\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u30ed\u30b0\u8a18\u9332\u306b\u95a2\u3059\u308b\u8981\u4ef6\u3092\u6e80\u305f\u3057\u3066\u3044\u307e\u3059\u3002. <strong>\u5411\u304b\u3044\u5074<\/strong> \u5f93\u6765\u306e\u30b8\u30e3\u30fc\u30ca\u30eb\u3084Syslog\u30c7\u30fc\u30bf\u3068\u306f\u7570\u306a\u308a\u3001Auditd\u306f\u3001\u653b\u6483\u306e\u5206\u6790\u306b\u304a\u3044\u3066\u91cd\u8981\u306a\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306b\u91cd\u70b9\u3092\u7f6e\u3044\u305f\u8a73\u7d30\u306a\u8996\u70b9\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/08\/LinuxAuditdBesprechung1234.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\uff1a\u30ab\u30fc\u30cd\u30eb\u3001\u30c7\u30fc\u30e2\u30f3\u3001\u30c4\u30fc\u30eb<\/h2>\n\n<p><strong>\u4edd<\/strong> \u76e3\u67fb\u30b7\u30b9\u30c6\u30e0\u306f\u3001\u8a18\u9332\u3092\u884c\u3046\u30ab\u30fc\u30cd\u30eb\u30b5\u30d6\u30b7\u30b9\u30c6\u30e0\u3068\u3001\u30e6\u30fc\u30b6\u30fc\u30b9\u30da\u30fc\u30b9\u30b5\u30fc\u30d3\u30b9\u306b\u5206\u3051\u3089\u308c\u308b <code>\u76e3\u67fb\u5f79<\/code> \u4fdd\u5b58\u6a5f\u80fd\u3001\u304a\u3088\u3073\u7ba1\u7406\u30fb\u5206\u6790\u306e\u305f\u3081\u306e\u30c4\u30fc\u30eb\u3002. <strong>\u306b\u3064\u3044\u3066<\/strong> <code>auditctl<\/code> \u5b9f\u884c\u6642\u306b\u30eb\u30fc\u30eb\u3092\u8a2d\u5b9a\u3059\u308b\u304b\u3001\u8d77\u52d5\u6642\u306b\u6c38\u7d9a\u7684\u306a\u30eb\u30fc\u30eb\u3092\u8aad\u307f\u8fbc\u3080\u304b <code>\/etc\/audit\/rules.d\/*.rules<\/code>. <strong>\u3068\u4e00\u7dd2\u306b<\/strong> <code>ausearch<\/code> \u30a4\u30d9\u30f3\u30c8\u3092\u6642\u9593\u3001\u30e6\u30fc\u30b6\u30fc\u3001\u30ad\u30fc\u3001\u307e\u305f\u306f\u30d5\u30a1\u30a4\u30eb\u3067\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3059\u308b\u4e00\u65b9\u3067\u3001 <code>aureport<\/code> \u7c21\u6f54\u306a\u30ec\u30dd\u30fc\u30c8\u3092\u751f\u6210\u3057\u307e\u3059\u3002. <strong>\u7136\u308c\u3070<\/strong> \u304d\u3081\u7d30\u304b\u306a\u30c7\u30fc\u30bf\u53ce\u96c6\u3068\u8fc5\u901f\u306a\u5206\u6790\u3092\u7d44\u307f\u5408\u308f\u305b\u3001\u76e3\u67fb\u8a3c\u8de1\u3092\u4e00\u8cab\u3057\u3066\u8ffd\u8de1\u53ef\u80fd\u306b\u3057\u3066\u3044\u307e\u3059\u3002. <strong>\u91cd\u8981<\/strong> \u306f\u3001\u4e00\u8cab\u3057\u305f\u547d\u540d\u6cd5\u3067\u3042\u308a\u3001 <code>-k<\/code> \u30ad\u30fc\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u5f8c\u306e\u30af\u30a8\u30ea\u304c\u6b63\u3057\u304f\u6a5f\u80fd\u3059\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002.<\/p>\n\n<h2>\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3068\u6709\u52b9\u5316<\/h2>\n\n<p><strong>\u6642\u70b9\u3067\u306f<\/strong> RHEL\/CentOS\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u307e\u3059 <code>\u76e3\u67fb<\/code> via <code>dnf install audit<\/code> \u6216\u3044\u306f <code>yum install audit<\/code>, Debian\/Ubuntu\u3067\u306f\u3001\u79c1\u306f <code>apt install auditd audispd-plugins<\/code>. <strong>\u306b\u3088\u308b\u3068<\/strong> \u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u304c\u5b8c\u4e86\u3057\u305f\u3089\u3001\u4ee5\u4e0b\u306e\u30b3\u30de\u30f3\u30c9\u3067\u30b5\u30fc\u30d3\u30b9\u3092\u8d77\u52d5\u30fb\u6709\u52b9\u5316\u3057\u307e\u3059\u3002 <code>systemctl start auditd<\/code> \u305d\u3057\u3066 <code>systemctl enable auditd<\/code>, \u30b9\u30c6\u30fc\u30bf\u30b9\u306f\u4ee5\u4e0b\u3067\u78ba\u8a8d\u3057\u307e\u3059 <code>systemctl status auditd<\/code>. <strong>\u3059\u3050\u306b<\/strong> \u76e3\u67fb\u30b5\u30d6\u30b7\u30b9\u30c6\u30e0\u3068\u30b5\u30fc\u30d3\u30b9\u304c\u5b9f\u884c\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3001\u30eb\u30fc\u30eb\u306b\u5f93\u3063\u3066\u30a4\u30d9\u30f3\u30c8\u306f <code>\/var\/log\/audit\/audit.log<\/code>. <strong>I<\/strong> \u76e3\u8996\u5bfe\u8c61\u306e\u30d5\u30a1\u30a4\u30eb\u306b\u610f\u56f3\u7684\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3066\u6b63\u5e38\u306b\u52d5\u4f5c\u3059\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3001\u305d\u306e\u5f8c\u3001\u4ee5\u4e0b\u306e\u30b3\u30de\u30f3\u30c9\u3067\u305d\u306e\u30a4\u30d9\u30f3\u30c8\u3092\u691c\u7d22\u3057\u307e\u3059\u3002 <code>ausearch -k <em>keyname<\/em><\/code>. <strong>\u306e\u305f\u3081\u306b<\/strong> \u8d77\u52d5\u306e\u305f\u3073\u306b\u4e00\u8cab\u3057\u305f\u52d5\u4f5c\u3092\u78ba\u4fdd\u3059\u308b\u305f\u3081\u3001\u6c38\u7d9a\u7684\u306a\u30eb\u30fc\u30eb\u304c\u8a2d\u5b9a\u3055\u308c\u3001\u6b63\u3057\u304f\u8aad\u307f\u8fbc\u307e\u308c\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n<h2>\u65e9\u671f\u958b\u59cb\u3001\u30d0\u30c3\u30af\u30ed\u30b0\u3001\u304a\u3088\u3073\u30eb\u30fc\u30eb\u306b\u3088\u308b\u4fdd\u8b77<\/h2>\n\n<p><strong>\u5b9b\u5148<\/strong> \u8d77\u52d5\u76f4\u5f8c\u306e\u30a4\u30d9\u30f3\u30c8\u3092\u898b\u9003\u3055\u306a\u3044\u3088\u3046\u306b\u3001\u30ab\u30fc\u30cd\u30eb\u306e\u8d77\u52d5\u6642\u306b\u76e3\u67fb\u30b5\u30d6\u30b7\u30b9\u30c6\u30e0\u3092\u6709\u52b9\u306b\u3057\u3066\u3044\u307e\u3059\u3002. <strong>\u3053\u308c\u306b\u3064\u3044\u3066<\/strong> \u8d77\u52d5\u6bb5\u968e\u306b\u304a\u3044\u3066\u30a4\u30d9\u30f3\u30c8\u304c\u5931\u308f\u308c\u306a\u3044\u3088\u3046\u3001\u30ab\u30fc\u30cd\u30eb\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u8a2d\u5b9a\u3057\u3001\u5341\u5206\u306a\u30d0\u30c3\u30af\u30ed\u30b0\u30b5\u30a4\u30ba\u3092\u78ba\u4fdd\u3057\u307e\u3059\u3002. <strong>\u3055\u3089\u306b<\/strong> \u8aad\u307f\u8fbc\u307f\u5f8c\u3001\u30eb\u30fc\u30eb\u30d9\u30fc\u30b9\u304c\u6539\u3056\u3093\u3055\u308c\u306a\u3044\u3088\u3046\u30ed\u30c3\u30af\u3057\u307e\u3059\u3002.<\/p>\n<ul>\n  <li><strong>\u30ab\u30fc\u30cd\u30eb\u30d1\u30e9\u30e1\u30fc\u30bf<\/strong>: <code>audit=1 audit_backlog_limit=8192<\/code> \u306b\u65bc\u3044\u3066 <code>\/etc\/default\/grub<\/code> \u8ffd\u52a0\u3057\u3001\u305d\u306e\u5f8c <code>\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u30fb\u30b0\u30e9\u30d6<\/code> (Debian\/Ubuntu)\u307e\u305f\u306f <code>grub2-mkconfig -o \/boot\/grub2\/grub.cfg<\/code> (RHEL\/CentOS) \u3092\u5b9f\u884c\u3059\u308b\u3002.<\/li>\n  <li><strong>\u30eb\u30fc\u30eb\u306b\u304a\u3051\u308b\u30d0\u30c3\u30af\u30ed\u30b0<\/strong>: \u958b\u59cb\u30eb\u30fc\u30eb\u3067\u306f\u3001\u6b21\u306e\u3088\u3046\u306b\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3059 <code>-b 8192<\/code>, \u30ab\u30fc\u30cd\u30eb\u30ad\u30e5\u30fc\u306e\u30b5\u30a4\u30ba\u3092\u9069\u5207\u306b\u8a2d\u5b9a\u3059\u308b\u305f\u3081\u3002.<\/li>\n  <li><strong>\u30eb\u30fc\u30eb\u3092\u975e\u8868\u793a\u306b\u3059\u308b<\/strong>: \u6700\u7d42\u7684\u306a\u30eb\u30fc\u30eb\u30d9\u30fc\u30b9\u306e\u8aad\u307f\u8fbc\u307f\u304c\u5b8c\u4e86\u3057\u305f\u3089\u3001\u6b21\u306e\u3088\u3046\u306b\u3057\u3066Immutable\u30e2\u30fc\u30c9\u3092\u6709\u52b9\u306b\u3057\u307e\u3059\u3002 <code>-e 2<\/code>. \u5909\u66f4\u306f\u518d\u8d77\u52d5\u5f8c\u306e\u307f\u53ef\u80fd\u3068\u306a\u308a\u3001\u7a3c\u50cd\u4e2d\u306e\u6539\u3056\u3093\u306b\u5bfe\u3059\u308b\u52b9\u679c\u7684\u306a\u4fdd\u8b77\u7b56\u3068\u306a\u308a\u307e\u3059\u3002.<\/li>\n  <li><strong>\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u306e\u6319\u52d5<\/strong>: \u300eIn\u300f <code>\/etc\/audit\/auditd.conf<\/code> \u79c1\u306f\u5b9a\u7fa9\u3059\u308b <code>overflow_action<\/code> (\u4f8b <code>SYSLOG<\/code> \u6216\u3044\u306f <code>\u30b7\u30f3\u30b0\u30eb<\/code>)\u3001\u30d0\u30c3\u30d5\u30a1\u304c\u6e80\u676f\u306e\u72b6\u614b\u3067\u3082\u660e\u78ba\u306b\u5b9a\u7fa9\u3055\u308c\u305f\u53cd\u5fdc\u304c\u5f97\u3089\u308c\u308b\u3088\u3046\u306b\u3059\u308b\u305f\u3081\u3067\u3059\u3002.<\/li>\n<\/ul>\n\n<h2>\u76e3\u67fb\u30eb\u30fc\u30eb\u3092\u9069\u5207\u306b\u5b9a\u7fa9\u3059\u308b<\/h2>\n\n<p><strong>\u4edd<\/strong> \u76e3\u67fb\u8a3c\u8de1\u306e\u54c1\u8cea\u306f\u3001\u91cd\u8981\u306a\u64cd\u4f5c\u3092\u7db2\u7f85\u3057\u3064\u3064\u3001\u4e0d\u8981\u306a\u30ce\u30a4\u30ba\u3092\u6392\u9664\u3059\u308b\u3001\u660e\u78ba\u304b\u3064\u7684\u3092\u7d5e\u3063\u305f\u30eb\u30fc\u30eb\u306b\u304b\u304b\u3063\u3066\u3044\u308b\u3002. <strong>\u306e\u305f\u3081\u306b<\/strong> \u6a5f\u5bc6\u6027\u306e\u9ad8\u3044\u30d5\u30a1\u30a4\u30eb\u306b\u3064\u3044\u3066\u306f\u3001\u4f8b\u3048\u3070 <code>-w \/etc\/passwd -p warx -k passwd_changes<\/code> \u305d\u3057\u3066\u3001\u4ee5\u4e0b\u306e\u9805\u76ee\u306b\u3064\u3044\u3066\u9069\u5207\u306a\u30eb\u30fc\u30eb\u3092\u8ffd\u52a0\u3057\u3066\u304f\u3060\u3055\u3044 <code>\/etc\/shadow<\/code>, <code>\/etc\/sudoers<\/code> \u6216\u3044\u306f <code>\/etc\/ssh\/<\/code>. <strong>\u5b9b\u5148<\/strong> \u30b3\u30de\u30f3\u30c9\u306e\u5b9f\u884c\u72b6\u6cc1\u3092\u8a18\u9332\u3059\u308b\u305f\u3081\u306b\u3001\u79c1\u306f <code>-a always,exit -F arch=b64 -S execve<\/code> \u307e\u305f\u300132\u30d3\u30c3\u30c8\u7248\u3082\u7528\u610f\u3055\u308c\u3066\u304a\u308a\u3001\u3053\u308c\u306b\u3088\u308a\u3001\u4ee5\u4e0b\u306e\u65b9\u6cd5\u3067\u3082\u3059\u3079\u3066\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u304c\u78ba\u8a8d\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002 <code>\u6839\u5143<\/code>. <strong>\u306e\u305f\u3081\u306b<\/strong> Apache \u306a\u3069\u306e\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3\u306b\u3064\u3044\u3066\u306f\u3001\u30d0\u30a4\u30ca\u30ea\u306e\u30d1\u30b9\u3092\u6307\u5b9a\u3057\u3066\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3057\u3066\u3044\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001 <code>-a always,exit -F arch=b64 -S all -F exe=\/usr\/sbin\/apache2 -k apache_activity<\/code>. <strong>I<\/strong> \u5404\u30eb\u30fc\u30eb\u306b\u306f\u7c21\u6f54\u306a\u30b3\u30e1\u30f3\u30c8\u3068\u660e\u78ba\u306a\u30ad\u30fc\u3092\u4ed8\u3051\u3066\u8a18\u9332\u3057\u3001\u5206\u6790\u7d50\u679c\u304c\u518d\u73fe\u53ef\u80fd\u3067\u3042\u308a\u3001\u540c\u50da\u304c\u305d\u306e\u610f\u56f3\u3092\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/08\/linux-auditd-security-monitoring-5217.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u9ad8\u5ea6\u306a\u30eb\u30fc\u30eb\u4f8b\u3068\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0<\/h2>\n\n<p><strong>\u306e\u305f\u3081\u306b<\/strong> \u3055\u3089\u306b\u8e0f\u307f\u8fbc\u3093\u3067\u3001\u7279\u6a29\u306e\u5207\u308a\u66ff\u3048\u3001\u30ab\u30fc\u30cd\u30eb\u3078\u306e\u4ecb\u5165\u3001\u6642\u9593\u3084\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u8a2d\u5b9a\u5909\u66f4\u3001\u305d\u3057\u3066\u6c38\u7d9a\u7684\u306a\u30e1\u30ab\u30cb\u30ba\u30e0\u3092\u53ef\u8996\u5316\u3059\u308b\u3001\u7126\u70b9\u3092\u7d5e\u3063\u305f\u30bb\u30c3\u30c8\u3092\u69cb\u7bc9\u3057\u307e\u3059\u3002\u30d1\u30c3\u30b1\u30fc\u30b8\u3084\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u306b\u3088\u308b\u30ce\u30a4\u30ba\u306f\u6392\u9664\u3057\u307e\u3059\u3002.<\/p>\n<ul>\n  <li><strong>\u30a4\u30f3\u30bf\u30e9\u30af\u30c6\u30a3\u30d6\u306a\u30e6\u30fc\u30b6\u30fc\u306e\u307f<\/strong>: <code>-F auid&gt;=1000 -F auid!=4294967295<\/code> \u306b\u8ffd\u52a0\u3057\u3066 <code>execve<\/code>-\u30b7\u30b9\u30c6\u30e0\u30b5\u30fc\u30d3\u30b9\u3092\u9664\u5916\u3059\u308b\u305f\u3081\u306e\u30eb\u30fc\u30eb\u3002.<\/li>\n  <li><strong>\u7279\u6a29\u306e\u5207\u308a\u66ff\u3048<\/strong>: <code>-a always,exit -F arch=b64 -S setuid,setreuid,setresuid -k priv_change<\/code> \u304a\u3088\u307332\u30d3\u30c3\u30c8\u7248\u3002\u30aa\u30d7\u30b7\u30e7\u30f3\uff1a <code>-C uid!=euid<\/code>, \u3001\u30d5\u30a3\u30fc\u30eb\u30c9\u6bd4\u8f03\u304c\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3002.<\/li>\n  <li><strong>\u30ab\u30fc\u30cd\u30eb\u30e2\u30b8\u30e5\u30fc\u30eb<\/strong>: <code>-a always,exit -F arch=b64 -S init_module,finit_module,delete_module -k kmod_change<\/code>; \u3055\u3089\u306b\uff1a <code>-w \/sbin\/insmod -p x -k kmod_exec<\/code>, <code>-w \/sbin\/modprobe -p x -k kmod_exec<\/code>.<\/li>\n  <li><strong>\u6642\u9593\u306e\u5909\u66f4<\/strong>: <code>-a always,exit -F arch=b64 -S adjtimex,settimeofday,clock_settime -k time_change<\/code> \u305d\u3057\u3066 <code>-w \/etc\/localtime -p wa -k time_change<\/code>.<\/li>\n  <li><strong>\u30de\u30a6\u30f3\u30c8\u3068\u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0<\/strong>: <code>-a always,exit -F arch=b64 -S mount,umount2 -k fs_mount<\/code>; <code>-w \/etc\/fstab -p wa -k fs_mount<\/code>.<\/li>\n  <li><strong>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u57fa\u76e4<\/strong>: <code>-a always,exit -F arch=b64 -S sethostname,setdomainname -k net_conf<\/code>; <code>-w \/etc\/hosts -p wa -k net_conf<\/code>, <code>-w \/etc\/hostname -p wa -k net_conf<\/code>, <code>-w \/etc\/resolv.conf -p wa -k net_conf<\/code>.<\/li>\n  <li><strong>Cron\u3068\u30bf\u30a4\u30de\u30fc<\/strong>: <code>-w \/etc\/crontab -p wa -k sched<\/code>, <code>-w \/etc\/cron.d\/ -p wa -k sched<\/code>, <code>-w \/var\/spool\/cron\/ -p wa -k sched<\/code>, <code>-w \/etc\/systemd\/system\/ -p wa -k sched<\/code>, <code>-w \/usr\/lib\/systemd\/system\/ -p wa -k sched<\/code>.<\/li>\n  <li><strong>SSH \u7d4c\u7531\u3067\u306e\u6c38\u7d9a\u5316<\/strong>: <code>-w \/root\/.ssh\/ -p wa -k ssh_keys<\/code>, <code>-w \/home\/ -p wa -k ssh_keys<\/code> (\u72ed\u3044\u5c0f\u9053\u3067 <code>authorized_keys<\/code>\uff08\u30ce\u30a4\u30ba\u3092\u9632\u3050\u305f\u3081\u3001\u30e6\u30fc\u30b6\u30fc\u3054\u3068\u306b\u30d5\u30a1\u30a4\u30eb\u6570\u3092\u5236\u9650\u3057\u3066\u3044\u307e\u3059\uff09\u3002.<\/li>\n  <li><strong>SUID\uff0fSGID\u306e\u60aa\u7528\u3092\u6291\u5236\u3059\u308b<\/strong>: \u5b9f\u884c\u53ef\u80fd\u30d5\u30a1\u30a4\u30eb\u304c\u683c\u7d0d\u3055\u308c\u3066\u3044\u308b\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b\u7126\u70b9\u3092\u5f53\u3066\u308b\uff1a <code>-w \/usr\/bin\/ -p wa -k bin_change<\/code>, <code>-w \/usr\/sbin\/ -p wa -k bin_change<\/code>, <code>-w \/bin\/ -p wa -k bin_change<\/code>, <code>-w \/sbin\/ -p wa -k bin_change<\/code>.<\/li>\n  <li><strong>\u5931\u6557\u306e\u307f\u3092\u8a18\u9332\u3059\u308b<\/strong> \uff08\u5927\u97f3\u91cf\u306e\u30b7\u30b9\u30c6\u30e0\u30b3\u30fc\u30eb\u306e\u5834\u5408\uff09\uff1a <code>-a always,exit -F arch=b64 -S open,openat -F success=0 -k file_denied<\/code>.<\/li>\n  <li><strong>\u30ce\u30a4\u30ba\u3092\u4f4e\u6e1b\u3059\u308b<\/strong>: \u30d1\u30c3\u30b1\u30fc\u30b8\u30de\u30cd\u30fc\u30b8\u30e3\u30fc\u3084\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3092\u9664\u5916\u3059\u308b\u3002\u4f8b\uff1a. <code>-a never,exit -F exe=\/usr\/bin\/dpkg<\/code>, <code>-a never,exit -F exe=\/usr\/bin\/apt<\/code>, <code>-a never,exit -F exe=\/usr\/bin\/yum<\/code>, <code>-a never,exit -F exe=\/usr\/bin\/rpm<\/code>, <code>-a never,exit -F exe=\/usr\/bin\/rsync<\/code> \uff08\u30c7\u30a3\u30b9\u30c8\u30ea\u30d3\u30e5\u30fc\u30b7\u30e7\u30f3\u3054\u3068\u306b\u30d1\u30b9\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\uff09\u3002.<\/li>\n<\/ul>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/08\/LinuxAuditdDesk4672.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u30ed\u30b0\u7ba1\u7406\u3068\u30ed\u30b0\u640d\u5931\u306e\u9632\u6b62<\/h2>\n\n<p><strong>\u306a\u3057<\/strong> \u9069\u5207\u306a\u30ed\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\u3068\u660e\u78ba\u306a\u3057\u304d\u3044\u5024\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u5834\u5408\u3001\u76e3\u67fb\u30ed\u30b0\u306f\u8cb4\u91cd\u306a\u30c7\u30fc\u30bf\u3092\u5931\u3063\u305f\u308a\u3001\u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0\u3092\u57cb\u3081\u5c3d\u304f\u3057\u305f\u308a\u3059\u308b\u30ea\u30b9\u30af\u304c\u3042\u308a\u307e\u3059\u3002. <strong>\u6642\u70b9\u3067\u306f<\/strong> <code>\/etc\/audit\/auditd.conf<\/code> \u79c1\u304c\u5b9a\u7fa9\u3059\u308b\u3082\u306e\u306f\u3001\u3068\u308a\u308f\u3051\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3042\u308b <code>max_log_file<\/code>, <code>max_log_file_action<\/code>, <code>num_logs<\/code>, <code>space_left<\/code> \u305d\u3057\u3066\u3001\u6b21\u306e\u3088\u3046\u306a\u53cd\u5fdc\u3084 <code>space_left_action<\/code>, <code>disk_full_action<\/code> \u6216\u3044\u306f <code>disk_error_action<\/code>. <strong>I<\/strong> \u6b21\u306e\u3088\u3046\u306a\u30ad\u30e3\u30f3\u30da\u30fc\u30f3\u3092\u597d\u3080 <code>ROTATE<\/code> \u307e\u305f\u3001Syslog\u3078\u306e\u65e9\u671f\u901a\u77e5\u3092\u884c\u3044\u3001\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u304c\u767a\u751f\u3057\u305f\u969b\u306b\u8fc5\u901f\u306b\u5bfe\u5fdc\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002. <strong>\u3055\u3089\u306b<\/strong> \u5f71\u97ff\u3092\u53d7\u3051\u305f\u30b7\u30b9\u30c6\u30e0\u3067\u306e\u6539\u3056\u3093\u3092\u56f0\u96e3\u306b\u3057\u3001\u8a3c\u62e0\u3092\u4fdd\u5168\u3059\u308b\u305f\u3081\u306b\u3001\u76e3\u67fb\u30ed\u30b0\u3092\u5225\u306e\u30db\u30b9\u30c8\u306b\u4fdd\u5b58\u3057\u3066\u3044\u307e\u3059\u3002. <strong>\u4edd<\/strong> \u4ee5\u4e0b\u306e\u8868\u3067\u306f\u3001\u4e3b\u8981\u306a\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u5206\u985e\u3057\u3001\u5b9f\u7528\u7684\u306a\u6a19\u6e96\u7684\u306a\u8a2d\u5b9a\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n<table>\n  <thead>\n    <tr>\n      <th><strong>\u30d1\u30e9\u30e1\u30fc\u30bf<\/strong><\/th>\n      <th><strong>\u76ee\u7684<\/strong><\/th>\n      <th><strong>\u4f8b<\/strong><\/th>\n      <th><strong>\u30d2\u30f3\u30c8<\/strong><\/th>\n    <\/tr>\n  <\/thead>\n  <tbody>\n    <tr>\n      <td><code>log_file<\/code><\/td>\n      <td>\u76e3\u67fb\u30ed\u30b0\u306e\u4fdd\u5b58\u5834\u6240<\/td>\n      <td><code>\/var\/log\/audit\/audit.log<\/code><\/td>\n      <td>\u6a19\u6e96\u30d1\u30b9\u3092\u7dad\u6301\u3057\u3001\u6a29\u9650\u3092\u660e\u78ba\u306b\u78ba\u4fdd\u3059\u308b<\/td>\n    <\/tr>\n    <tr>\n      <td><code>log_format<\/code><\/td>\n      <td>\u30a4\u30d9\u30f3\u30c8\u306e\u5f62\u5f0f<\/td>\n      <td><code>RAW<\/code><\/td>\n      <td>RAW\u306f\u3001\u60c5\u5831\u306e\u640d\u5931\u306a\u304f\u30d5\u30a9\u30ec\u30f3\u30b8\u30c3\u30af\u89e3\u6790\u3092\u5bb9\u6613\u306b\u3059\u308b<\/td>\n    <\/tr>\n    <tr>\n      <td><code>max_log_file<\/code><\/td>\n      <td>\u6700\u5927\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\uff08MB\uff09<\/td>\n      <td><code>100<\/code> \u307e\u3067 <code>500<\/code><\/td>\n      <td>\u30a4\u30d9\u30f3\u30c8\u306e\u767a\u751f\u91cf\u3068\u30b9\u30c8\u30ec\u30fc\u30b8\u5bb9\u91cf\u306b\u5408\u308f\u305b\u3066\u8abf\u6574\u3059\u308b<\/td>\n    <\/tr>\n    <tr>\n      <td><code>max_log_file_action<\/code><\/td>\n      <td>\u6307\u5b9a\u30b5\u30a4\u30ba\u306b\u9054\u3057\u305f\u969b\u306e\u30ad\u30e3\u30f3\u30da\u30fc\u30f3<\/td>\n      <td><code>ROTATE<\/code><\/td>\n      <td>\u30ed\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\u306b\u3088\u308a\u3001\u30c7\u30fc\u30bf\u304c\u5931\u308f\u308c\u305f\u308a\u4e0a\u66f8\u304d\u3055\u308c\u305f\u308a\u3059\u308b\u306e\u3092\u9632\u304e\u307e\u3059<\/td>\n    <\/tr>\n    <tr>\n      <td><code>num_logs<\/code><\/td>\n      <td>\u4fdd\u6301\u3055\u308c\u3066\u3044\u308b\u30d5\u30a1\u30a4\u30eb\u306e\u6570<\/td>\n      <td><code>5<\/code> \u307e\u3067 <code>10<\/code><\/td>\n      <td>\u5206\u6790\u306b\u5fc5\u8981\u306a\u3060\u3051\u306e\u5c65\u6b74\u30c7\u30fc\u30bf\u3092\u4fdd\u6301\u3057\u3064\u3064\u3001\u30b9\u30c8\u30ec\u30fc\u30b8\u3092\u5727\u8feb\u3057\u306a\u3044<\/td>\n    <\/tr>\n    <tr>\n      <td><code>space_left<\/code><\/td>\n      <td>\u7a7a\u304d\u30e1\u30e2\u30ea\u306e\u3057\u304d\u3044\u5024 (MB)<\/td>\n      <td><code>1024<\/code> \u4ee5\u4e0a<\/td>\n      <td>\u65e9\u671f\u306e\u30a2\u30e9\u30fc\u30c8\u306b\u3088\u308a\u3001\u5bfe\u5fdc\u6642\u9593\u3092\u78ba\u4fdd\u3067\u304d\u308b<\/td>\n    <\/tr>\n    <tr>\n      <td><code>space_left_action<\/code><\/td>\n      <td>\u57fa\u6e96\u5024\u3092\u4e0b\u56de\u3063\u305f\u5834\u5408\u306e\u5bfe\u5fdc<\/td>\n      <td><code>SYSLOG<\/code><\/td>\n      <td>\u3055\u3089\u306b\u3001\u30e1\u30fc\u30eb\u3084SIEM\u30a2\u30e9\u30fc\u30c8\u306e\u5c0e\u5165\u3082\u691c\u8a0e\u3059\u308b<\/td>\n    <\/tr>\n    <tr>\n      <td><code>disk_full_action<\/code><\/td>\n      <td>\u30b9\u30c8\u30ec\u30fc\u30b8\u5bb9\u91cf\u304c\u3044\u3063\u3071\u3044\u306b\u306a\u3063\u305f\u5834\u5408\u306e\u5bfe\u51e6\u6cd5<\/td>\n      <td><code>SUSPEND<\/code> \u6216\u3044\u306f <code>STOP<\/code><\/td>\n      <td>\u30ea\u30b9\u30af\u8a31\u5bb9\u5ea6\u306b\u5fdc\u3058\u305f\u660e\u78ba\u306a\u5224\u65ad<\/td>\n    <\/tr>\n  <\/tbody>\n<\/table>\n\n<h2>\u30ea\u30e2\u30fc\u30c8\u30ed\u30ae\u30f3\u30b0\u3068\u4e00\u5143\u7684\u306a\u5206\u6790<\/h2>\n\n<p><strong>\u306e\u305f\u3081\u306b<\/strong> \u591a\u304f\u306e\u30db\u30b9\u30c8\u306b\u3064\u3044\u3066\u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u30d1\u30e9\u30e1\u30fc\u30bf\u306b\u3088\u3063\u3066\u5236\u5fa1\u3055\u308c\u308b\u3001TCP\/TLS \u306b\u3088\u308b\u96c6\u4e2d\u7ba1\u7406\u3092\u63a1\u7528\u3057\u3066\u3044\u307e\u3059\u3002 <code>tcp_listen_port<\/code> \u304a\u3088\u3073\u5bfe\u5fdc\u3059\u308b\u7aef\u672b\u3002. <strong>\u306b\u3064\u3044\u3066<\/strong> audispd\u30d7\u30e9\u30b0\u30a4\u30f3\u3084rsyslog\u3092\u4f7f\u7528\u3057\u3066\u3001\u30a4\u30d9\u30f3\u30c8\u3092SIEM\u3084\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u306b\u8ee2\u9001\u3057\u3001\u30ed\u30b0\u30a4\u30f3\u30a8\u30e9\u30fc\u3001\u8a2d\u5b9a\u5909\u66f4\u3001\u4e0d\u5be9\u306a\u30d7\u30ed\u30bb\u30b9\u306e\u8d77\u52d5\u3092\u76f8\u95a2\u5206\u6790\u3057\u307e\u3059\u3002. <strong>\u7136\u308c\u3070<\/strong> \u5358\u4e00\u306e\u30b5\u30fc\u30d0\u30fc\u4e0a\u3067\u306f\u76ee\u7acb\u305f\u306a\u3044\u3088\u3046\u306a\u30d1\u30bf\u30fc\u30f3\u3067\u3082\u3001\u305d\u308c\u3089\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3068\u5373\u5ea7\u306b\u30a2\u30e9\u30fc\u30c8\u304c\u767a\u4fe1\u3055\u308c\u308b\u3053\u3068\u306b\u6c17\u3065\u304d\u307e\u3059\u3002. <strong>\u8ab0\u304c<\/strong> \u3059\u3067\u306b\u30c0\u30c3\u30b7\u30e5\u30dc\u30fc\u30c9\u3092\u5c0e\u5165\u3057\u3066\u3044\u308b\u4f01\u696d\u306f\u3001\u4ee5\u4e0b\u306e\u30e1\u30ea\u30c3\u30c8\u3092\u4eab\u53d7\u3067\u304d\u307e\u3059\u3002 <a href=\"https:\/\/webhosting.de\/ja\/%e3%83%ad%e3%82%b0%e9%9b%86%e7%b4%84-%e3%83%9b%e3%82%b9%e3%83%86%e3%82%a3%e3%83%b3%e3%82%b0-%e3%82%b5%e3%83%bc%e3%83%90%e3%83%bc%e6%9c%80%e9%81%a9%e5%8c%96-%e3%82%a4%e3%83%b3%e3%82%b5%e3%82%a4\/\">\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u306b\u304a\u3051\u308b\u30ed\u30b0\u96c6\u7d04<\/a>, \u3001\u306a\u305c\u306a\u3089\u3001\u305d\u3053\u3067\u306f\u76e3\u67fb\u30a4\u30d9\u30f3\u30c8\u304c\u4ed6\u306e\u30c6\u30ec\u30e1\u30c8\u30ea\u30c7\u30fc\u30bf\u3068\u7d71\u5408\u3055\u308c\u308b\u304b\u3089\u3067\u3059\u3002. <strong>I<\/strong> \u307e\u305f\u3001\u5b89\u5168\u306a\u8ee2\u9001\u7d4c\u8def\u3092\u78ba\u4fdd\u3057\u3001\u672c\u756a\u30b7\u30b9\u30c6\u30e0\u3068\u96c6\u7d04\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u660e\u78ba\u306b\u5206\u96e2\u3059\u308b\u3088\u3046\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/08\/LinuxAuditd_Sicherheit_1234.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u5206\u6790\uff1aausearch\u3068areport\u3092\u52b9\u679c\u7684\u306b\u6d3b\u7528\u3059\u308b<\/h2>\n\n<p><strong>\u751f\u30c7\u30fc\u30bf<\/strong> \u3059\u3050\u306b\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3067\u304d\u306a\u3051\u308c\u3070\u610f\u5473\u304c\u306a\u3044\u306e\u3067\u3001\u307e\u305a\u306f\u660e\u78ba\u306a\u30ad\u30fc\u304b\u3089\u59cb\u3081\u3001 <code>ausearch<\/code> \u7684\u3092\u7d5e\u3063\u305f\u691c\u7d22\u306e\u305f\u3081\u306b\u3002. <strong>\u3068\u4e00\u7dd2\u306b<\/strong> <code>ausearch -k passwd_changes -ts today<\/code> \u4f8b\u3048\u3070\u3001\u4ee5\u4e0b\u306e\u70b9\u306b\u95a2\u3059\u308b\u6700\u8fd1\u306e\u5909\u66f4\u3092\u8a55\u4fa1\u3057\u3066\u3044\u307e\u3059 <code>\/etc\/passwd<\/code> \u4ee5\u4e0a\u3067\u3059\u3002\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u3001\u6642\u9593\u67a0\u3084\u30e6\u30fc\u30b6\u30fc\u30d5\u30a3\u30eb\u30bf\u30fc\u3092\u5fae\u8abf\u6574\u3057\u307e\u3059\u3002. <strong>\u306e\u305f\u3081\u306b<\/strong> \u6982\u8981\u30ec\u30dd\u30fc\u30c8\u3092\u63d0\u4f9b\u3057\u307e\u3059 <code>aureport --summary<\/code> \u76ee\u7acb\u3064\u30ed\u30b0\u30a4\u30f3\u3001\u30d5\u30a1\u30a4\u30eb\u306e\u5909\u66f4\u3001\u30b7\u30b9\u30c6\u30e0\u30b3\u30fc\u30eb\u306e\u983b\u5ea6\u3092\u53ef\u8996\u5316\u3059\u308b\u30b3\u30f3\u30d1\u30af\u30c8\u306a\u8868\u3002. <strong>\u3055\u3089\u306b<\/strong> \u30d7\u30ed\u30bb\u30b9\u8d77\u52d5\u3068\u30ea\u30bd\u30fc\u30b9\u4f7f\u7528\u72b6\u6cc1\u306b\u95a2\u3059\u308b\u898b\u89e3\u306b\u3001\u4ee5\u4e0b\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002 <a href=\"https:\/\/webhosting.de\/ja\/%e3%82%b5%e3%83%bc%e3%83%90%e3%83%bc%e3%83%97%e3%83%ad%e3%82%bb%e3%82%b9%e3%82%a2%e3%82%ab%e3%82%a6%e3%83%b3%e3%83%86%e3%82%a3%e3%83%b3%e3%82%b0%e3%80%81%e3%83%aa%e3%82%bd%e3%83%bc%e3%82%b9%e5%88%86\/\">\u30d7\u30ed\u30bb\u30b9\u4f1a\u8a08<\/a>, \u3001\u5b9f\u884c\u5185\u5bb9\u3068\u8ca0\u8377\u306e\u30d4\u30fc\u30af\u3092\u95a2\u9023\u4ed8\u3051\u308b\u305f\u3081\u306b\u3002. <strong>\u30aa\u30f3<\/strong> \u7d50\u5c40\u306e\u3068\u3053\u308d\u3001\u91cd\u8981\u306a\u306e\u306f\u3001\u300c\u8ab0\u304c\u3001\u4f55\u3092\u3001\u3044\u3064\u3001\u3069\u3053\u3067\u3001\u3069\u306e\u3088\u3046\u306a\u65b9\u6cd5\u3067\u300d\u3068\u3044\u3046\u8cea\u554f\u306b\u6570\u79d2\u3067\u7b54\u3048\u3089\u308c\u308b\u304b\u3069\u3046\u304b\u3060\u3002.<\/p>\n\n<h2>\u5206\u6790\u3092\u3055\u3089\u306b\u6df1\u3081\u308b\uff1a\u30a4\u30d9\u30f3\u30c8\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u6b63\u3057\u3044\u8aad\u307f\u65b9<\/h2>\n\n<p><strong>\u3060\u304b\u3089<\/strong> \u5206\u6790\u7d50\u679c\u304c\u6b63\u78ba\u3067\u3042\u308b\u305f\u3081\u306b\u306f\u3001\u4e3b\u8981\u306a\u30d5\u30a3\u30fc\u30eb\u30c9\u3068\u30a4\u30d9\u30f3\u30c8\u306e\u7a2e\u985e\u3092\u628a\u63e1\u3057\u3066\u304a\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002. <strong>SYSCALL<\/strong>- \u9805\u76ee\u306b\u306f\u3001\u3068\u308a\u308f\u3051\u4ee5\u4e0b\u306e\u3082\u306e\u304c\u542b\u307e\u308c\u308b\u3002. <code>auid<\/code> (\u767b\u9332UID)\u3001, <code>uid\/euid\/suid<\/code> (\u5b9fUID\/\u6709\u52b9UID\/\u4fdd\u5b58UID)\u3001, <code>ses<\/code> (\u30bb\u30c3\u30b7\u30e7\u30f3ID) \u304a\u3088\u3073 <code>exe<\/code> \uff08\u5b9f\u884c\u30d5\u30a1\u30a4\u30eb\uff09\u3002. <strong>PATH<\/strong>-\u30d6\u30ed\u30c3\u30af\u306f\u5f71\u97ff\u3092\u53d7\u3051\u308b\u30d1\u30b9\u3092\u793a\u3057\u3001, <strong>EXECVE<\/strong> \u305d\u306e\u8ad6\u62e0\u3092\u5217\u6319\u3057\u3001, <strong>CWD<\/strong> \u4f5c\u696d\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002. <strong>\u3068\u4e00\u7dd2\u306b<\/strong> <code>ausearch -m SYSCALL -sc execve -ua 1000 -ts recent<\/code> \u3053\u3053\u3067\u306f\u3001\u30a4\u30f3\u30bf\u30e9\u30af\u30c6\u30a3\u30d6\u306a\u5b9f\u88c5\u306b\u7126\u70b9\u3092\u5f53\u3066\u3066\u3044\u307e\u3059\uff1b; <code>aureport -x --summary -i<\/code> \u983b\u5ea6\u3084\u7279\u7570\u306a\u70b9\u3092\u4e00\u76ee\u3067\u628a\u63e1\u3067\u304d\u308b\u3002. <strong>\u91cd\u8981<\/strong>: <code>auid<\/code> \u6b8b\u308b\u306e\u306f <code>\u30b9\u30c9<\/code> \u3042\u308b\u3044\u306f\u3001setuid\u30b8\u30e3\u30f3\u30d7\u306f\u4e00\u5b9a\u3067\u3042\u308b\u305f\u3081\u3001\u300c\u8ab0\u304c\u5f15\u304d\u91d1\u3068\u306a\u3063\u305f\u306e\u304b\u300d\u3068\u3044\u3046\u89b3\u70b9\u3067\u306f\u3001\u3088\u308a\u5805\u7262\u306a\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u57fa\u6e96\u3068\u306a\u308b\u3002. <\/p>\n\n<h2>\u5178\u578b\u7684\u306a\u30df\u30b9\u3092\u907f\u3051\u308b<\/h2>\n\n<p><strong>\u3078<\/strong> \u5e83\u7bc4\u306a\u30eb\u30fc\u30eb\u306f\u30ed\u30b0\u3092\u80a5\u5927\u5316\u3055\u305b\u3001\u672c\u5f53\u306b\u91cd\u8981\u306a\u624b\u304c\u304b\u308a\u3092\u96a0\u3057\u3066\u3057\u307e\u3046\u305f\u3081\u3001\u79c1\u306f\u91cd\u8981\u306a\u30d5\u30a1\u30a4\u30eb\u3001execve\u3001\u6a29\u9650\u306e\u5207\u308a\u66ff\u3048\u3001\u304a\u3088\u3073\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306b\u95a2\u9023\u3059\u308b\u8a2d\u5b9a\u306b\u7126\u70b9\u3092\u5f53\u3066\u3066\u3044\u307e\u3059\u3002. <strong>\u6b20\u843d<\/strong> \u9069\u5207\u306a\u30ed\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\u304c\u884c\u308f\u308c\u306a\u3044\u3068\u3001\u30b7\u30b9\u30c6\u30e0\u306b\u30ea\u30b9\u30af\u304c\u751f\u3058\u308b\u305f\u3081\u3001\u898f\u6a21\u3084\u6570\u3001\u305d\u3057\u3066\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u6642\u306e\u5bfe\u5fdc\u306b\u3064\u3044\u3066\u660e\u78ba\u306a\u57fa\u6e96\u3092\u8a2d\u3051\u3066\u3044\u307e\u3059\u3002. <strong>I<\/strong> \u76e3\u67fb\u306e\u8a2d\u5b9a\u3068\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3082\u76e3\u8996\u3059\u308b <code>\/var\/log\/audit\/<\/code>, \u3001\u653b\u6483\u8005\u306f\u75d5\u8de1\u3092\u6d88\u305d\u3046\u3068\u3059\u308b\u304b\u3089\u3067\u3059\u3002. <strong>\u305d\u3057\u3066<\/strong> \u5206\u6790\u7d50\u679c\u306e\u4e00\u8cab\u6027\u3092\u4fdd\u3064\u305f\u3081\u3001\u5404\u30eb\u30fc\u30eb\u306b\u3064\u3044\u3066\u30ad\u30fc\u3001\u76ee\u6a19\u3001\u304a\u3088\u3073\u7c21\u5358\u306a\u7406\u7531\u3092\u8a18\u9332\u3057\u3066\u3044\u307e\u3059\u3002. <strong>\u8ab0\u304c<\/strong> \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u61f8\u5ff5\u304c\u3042\u308b\u5834\u5408\u306f\u3001\u7684\u78ba\u306b\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3092\u884c\u3044\u3001\u4e0d\u8981\u306a\u30d1\u30b9\u3092\u524a\u9664\u3057\u3001\u65b0\u3057\u3044\u30eb\u30fc\u30eb\u306e\u5f71\u97ff\u3092\u307e\u305a\u30c6\u30b9\u30c8\u3067\u78ba\u8a8d\u3059\u3079\u304d\u3067\u3042\u308b\u3002.<\/p>\n\n<h2>\u6027\u80fd\u3001\u5b89\u5b9a\u6027\u3001\u54c1\u8cea\u30c1\u30a7\u30c3\u30af<\/h2>\n\n<p><strong>\u76e3\u67fb<\/strong> \u696d\u52d9\u306e\u59a8\u3052\u306b\u306a\u3063\u3066\u306f\u306a\u3089\u306a\u3044\u3002. <strong>I<\/strong> \u5b9a\u671f\u7684\u306b\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044 <code>auditctl -s<\/code>, \u3001\u304b\u3069\u3046\u304b <code>lost<\/code>-\u30a4\u30d9\u30f3\u30c8\u304c\u767a\u751f\u3059\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3057\u3001\u30eb\u30fc\u30eb\u5909\u66f4\u5f8c\u306e\u30d0\u30c3\u30af\u30ed\u30b0\u5024\u3092\u76e3\u8996\u3059\u308b\u3002. <strong>\u6642\u70b9\u3067\u306f<\/strong> \u30a4\u30d9\u30f3\u30c8\u8ca0\u8377\u304c\u9ad8\u3044\u5834\u5408\u306f\u3001\u30c7\u30a3\u30b9\u30d1\u30c3\u30c1\u30e3\u30ad\u30e5\u30fc\u306e\u5bb9\u91cf\u3092\u5897\u3084\u3057\u307e\u3059\uff08<code>q_depth<\/code>) audispd\u30d7\u30e9\u30b0\u30a4\u30f3\u3092\u6709\u52b9\u306b\u3057\u3001 <code>overflow_action<\/code> \u610f\u8b58\u7684\u306b\u3002. <strong>\u3069\u3053\u3067<\/strong> <code>execve<\/code>-\u30eb\u30fc\u30eb\u306b\u3088\u3063\u3066\u30dc\u30ea\u30e5\u30fc\u30e0\u304c\u904e\u5270\u306b\u306a\u308b\u5834\u5408\u306f\u3001\u4ee5\u4e0b\u3067\u5236\u9650\u3057\u307e\u3059 <code>auid<\/code> \u307e\u305f\u306f\u4ee5\u4e0b\u306e\u30ea\u30f3\u30af\u304b\u3089 <code>exe=<\/code>- \u30db\u30ef\u30a4\u30c8\u30ea\u30b9\u30c8\uff0f\u30d6\u30e9\u30c3\u30af\u30ea\u30b9\u30c8\u3092\u8a2d\u5b9a\u3057\u3001\u30ce\u30a4\u30ba\u306e\u591a\u3044\u30b7\u30b9\u30c6\u30e0\u30b3\u30fc\u30eb\u306b\u3064\u3044\u3066\u306f\u5931\u6557\u306e\u307f\u3092\u30ed\u30b0\u306b\u8a18\u9332\u3059\u308b\u3002. <strong>\u524d<\/strong> \u672c\u683c\u7684\u306a\u5c55\u958b\u306b\u5148\u7acb\u3061\u3001\u30b9\u30c6\u30fc\u30b8\u30f3\u30b0\u74b0\u5883\u3067\u65b0\u3057\u3044\u30eb\u30fc\u30eb\u3092\u691c\u8a3c\u3057\u3001\u30a4\u30d9\u30f3\u30c8\u767a\u751f\u7387\u3068CPU\u8ca0\u8377\u3092\u6e2c\u5b9a\u3057\u3066\u6bd4\u8f03\u3057\u307e\u3059 <code>aureport --summary<\/code> \u5909\u66f4\u524d\uff0f\u5909\u66f4\u5f8c\u3092\u6bd4\u8f03\u3057\u3001\u305d\u306e\u52b9\u679c\u3092\u5b9a\u91cf\u5316\u3059\u308b\u3002.<\/p>\n\n<h2>\u30b3\u30f3\u30c6\u30ca\u304a\u3088\u3073\u4eee\u60f3\u5316\u74b0\u5883<\/h2>\n\n<p><strong>\u6642\u70b9\u3067\u306f<\/strong> \u30ab\u30fc\u30cd\u30eb\u306f\u30b3\u30f3\u30c6\u30ca\u30db\u30b9\u30c8\u3068\u540c\u69d8\u306b\u30b3\u30f3\u30c6\u30ca\u30d7\u30ed\u30bb\u30b9\u3082\u30ed\u30b0\u306b\u8a18\u9332\u3057\u307e\u3059\u3002\u3053\u308c\u306f\u610f\u56f3\u3055\u308c\u305f\u52d5\u4f5c\u3067\u3059\u304c\u3001\u30ed\u30b0\u306e\u51fa\u529b\u304c\u591a\u304f\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002. <strong>I<\/strong> \u30db\u30b9\u30c8\u4fdd\u8b77\u3092\u57fa\u6e96\u3068\u3059\u308b\uff08\u4f8b\uff1a. <code>dockerd<\/code> \u307e\u305f\u306fPodman\uff09\u3001\u5b89\u5168\u306a\u30d0\u30a4\u30ca\u30ea\u30d1\u30b9\u3068\u8a2d\u5b9a\u3001\u304a\u3088\u3073\u30e6\u30fc\u30b6\u30fc\u30d3\u30e5\u30fc\u306e\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3092 <code>auid<\/code>. <strong>\u4f8b<\/strong>: <code>-w \/usr\/bin\/dockerd -p x -k container_runtime<\/code>, <code>-w \/etc\/docker\/ -p wa -k container_conf<\/code>, \u3001\u3055\u3089\u306b\u6b21\u306e\u3088\u3046\u306a\u6c4e\u7528\u7684\u306a\u30db\u30b9\u30c8\u30eb\u30fc\u30eb\u306a\u3069 <code>execve<\/code> \u3092\u3082\u3063\u3066 <code>auid<\/code>-\u30d5\u30a3\u30eb\u30bf\u30fc <strong>\u6642\u70b9\u3067\u306f<\/strong> VM\u306b\u95a2\u3057\u3066\u306f\u3001\u76e3\u67fb\u30ed\u30b0\u3092\u4e00\u6642\u7684\u306a\u30c7\u30fc\u30bf\u3068\u3057\u3066\u6271\u3063\u3066\u3044\u307e\u3059\u3002\u30ea\u30e2\u30fc\u30c8\u8ee2\u9001\u3092\u6709\u52b9\u306b\u3057\u3001\u30ed\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\u9593\u9694\u3092\u77ed\u304f\u8a2d\u5b9a\u3057\u3001\u30b9\u30ca\u30c3\u30d7\u30b7\u30e7\u30c3\u30c8\u3067\u306f\u6642\u9593\u7684\u4e00\u8cab\u6027\u306b\u6ce8\u610f\u3092\u6255\u3063\u3066\u3044\u307e\u3059\u3002. <strong>\u91cd\u8981<\/strong> \u30bf\u30a4\u30e0\u30e9\u30a4\u30f3\u5206\u6790\u306e\u4fe1\u983c\u6027\u3092\u78ba\u4fdd\u3059\u308b\u305f\u3081\u306b\u306f\u3001NTP\/Chrony\u306b\u3088\u308b\u6b63\u78ba\u306a\u6642\u523b\u540c\u671f\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002.<\/p>\n\n<h2>\u30b3\u30f3\u30d7\u30e9\u30a4\u30a2\u30f3\u30b9\u3068\u8a18\u9332\u7ba1\u7406<\/h2>\n\n<p><strong>\u306e\u305f\u3081\u306b<\/strong> ISO 27001\uff08A.12.4 \u30ed\u30ae\u30f3\u30b0\uff0f\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u3001A.16 \u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u7ba1\u7406\u306a\u3069\uff09\u304a\u3088\u3073PCI DSS\uff08\u7b2c10\u7ae0\uff09\u306b\u57fa\u3065\u304d\u3001\u691c\u8a3c\u53ef\u80fd\u306a\u8a3c\u62e0\u3092\u7b56\u5b9a\u3057\u307e\u3059\uff1a <strong>\u4f55<\/strong> \u3069\u306e\u304f\u3089\u3044\u306e\u671f\u9593\u8a18\u9332\u3055\u308c\u308b\u306e\u304b\u3001\u8ab0\u304c\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u306e\u304b\u3001\u6574\u5408\u6027\u306f\u3069\u306e\u3088\u3046\u306b\u78ba\u4fdd\u3055\u308c\u308b\u306e\u304b\uff1f <strong>I<\/strong> \u30eb\u30fc\u30eb\u30d9\u30fc\u30b9\u306b\u30d0\u30fc\u30b8\u30e7\u30f3\u7ba1\u7406\u3092\u884c\u3044\u3001\u30ad\u30fc\u3068\u76ee\u7684\u3092\u6587\u66f8\u5316\u3057\u3001\u30a2\u30fc\u30ab\u30a4\u30d6\u30ed\u30b0\u306b\u30cf\u30c3\u30b7\u30e5\u5024\u3067\u7f72\u540d\u3057\u3001\u6539\u3056\u3093\u9632\u6b62\u5bfe\u7b56\u3092\u65bd\u3057\u3066\u4fdd\u5b58\u3059\u308b\u3002. <strong>\u6642\u70b9\u3067\u306f<\/strong> \u500b\u4eba\u30c7\u30fc\u30bf\u306b\u3064\u3044\u3066\u306f\u3001\u30c7\u30fc\u30bf\u6700\u5c0f\u5316\uff08\u5bfe\u8c61\u3092\u7d5e\u3063\u305f\u30eb\u30fc\u30eb\u3001\u77ed\u3044\u4fdd\u5b58\u671f\u9593\uff09\u3092\u9069\u7528\u3057\u3001\u660e\u78ba\u306a\u524a\u9664\u30d7\u30ed\u30bb\u30b9\u3092\u5b9a\u3081\u3066\u3044\u307e\u3059\u3002. <strong>\u7136\u308c\u3070<\/strong> \u76e3\u67fb\u4eba\u3092\u7d0d\u5f97\u3055\u305b\u3001\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u767a\u751f\u6642\u306b\u5b9f\u969b\u306b\u7b54\u3048\u3092\u63d0\u4f9b\u3067\u304d\u308b\u30ec\u30dd\u30fc\u30c8\u304c\u4f5c\u6210\u3055\u308c\u307e\u3059\u3002.<\/p>\n\n<h2>\u904b\u7528\u3001\u76e3\u8996\u3001\u304a\u3088\u3073\u30d7\u30ec\u30a4\u30d6\u30c3\u30af<\/h2>\n\n<p><strong>\u6642\u70b9\u3067\u306f<\/strong> \u5e38\u6642\u7a3c\u50cd\u306b\u306f\u3001\u6c7a\u307e\u3063\u305f\u30eb\u30fc\u30c1\u30f3\u304c\u5fc5\u8981\u3067\u3059\u3002\u6bce\u65e5\u306e\u629c\u304d\u53d6\u308a\u691c\u67fb\u3067 <code>aureport<\/code>, \u30a2\u30e9\u30fc\u30e0\u304c\u767a\u751f\u3057\u305f\u969b <code>lost &gt; 0<\/code>, \u3001\u7a7a\u304d\u76e3\u67fb\u30d1\u30fc\u30c6\u30a3\u30b7\u30e7\u30f3\u304a\u3088\u3073\u30ea\u30e2\u30fc\u30c8\u8ee2\u9001\u306e\u78ba\u8a8d\u3002. <strong>I<\/strong> \u30d7\u30ec\u30a4\u30d6\u30c3\u30af\u3092\u4f5c\u6210\uff1a\u300c\u76ee\u7acb\u3064\u5e79\u90e8\u300d\uff08\u30d5\u30a3\u30eb\u30bf\u30fc\uff1a <code>exe=<\/code> \u305d\u3057\u3066 <code>auid<\/code>), \u300c\u91cd\u8981\u306a\u30d5\u30a1\u30a4\u30eb\u304c\u5909\u66f4\u3055\u308c\u307e\u3057\u305f\u300d\uff08\u4ee5\u4e0b\u306e\u9805\u76ee\u3068\u306e\u76f8\u95a2\u95a2\u4fc2\uff1a <code>PATH<\/code>, <code>SYSCALL<\/code>, <code>EXECVE<\/code>), \u300c\u30ab\u30fc\u30cd\u30eb\u3078\u306e\u4ecb\u5165\u300d\uff08\u306b\u95a2\u3059\u308b\u898f\u5247\uff09 <code>init_module<\/code> \u305d\u3057\u3066 <code>\u30de\u30a6\u30f3\u30c8<\/code>). <strong>\u65e2\u77e5<\/strong> \u6b21\u306e\u3088\u3046\u306a\u30a4\u30d9\u30f3\u30c8\u306e\u7a2e\u985e <code>ANOM_PROMISCUOUS<\/code> \uff08\u30d7\u30ed\u30df\u30b9\u30af\u30e2\u30fc\u30c9\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\uff09\u307e\u305f\u306f <code>MAC_POLICY_LOAD<\/code> \uff08MAC\u30dd\u30ea\u30b7\u30fc\u304c\u8aad\u307f\u8fbc\u307e\u308c\u305f\uff09\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3001\u512a\u5148\u9806\u4f4d\u306b\u57fa\u3065\u3044\u3066\u8a55\u4fa1\u3092\u884c\u3044\u3001\u5bfe\u5fdc\u624b\u9806\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002.<\/p>\n\n<h2>\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u3068\u518d\u8d77\u52d5<\/h2>\n\n<p><strong>\u3044\u3064<\/strong> \u30a4\u30d9\u30f3\u30c8\u306e\u901a\u77e5\u304c\u5c4a\u304b\u306a\u3044\u5834\u5408\u306f\u3001\u307e\u305a\u78ba\u8a8d\u3057\u307e\u3059 <code>ausearch -m DAEMON -ts today<\/code> \u305d\u3057\u3066 <code>auditctl -s<\/code> (\u30b9\u30c6\u30fc\u30bf\u30b9\uff0f\u30d0\u30c3\u30af\u30ed\u30b0)\u3002. <strong>\u6b20\u5e2d<\/strong> \u30eb\u30fc\u30eb\u306b\u3064\u3044\u3066\u306f\u3001\u4ee5\u4e0b\u306b\u8f09\u305b\u3066\u304a\u304d\u307e\u3059 <code>augenrules --load<\/code> \u65b0\u3057\u304f\u3057\u3066\u3001\u4ee5\u4e0b\u3067\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044 <code>auditctl -l<\/code>. <strong>\u3067\u3057\u3087\u3046\u304b\uff1f<\/strong> Immutable\u30e2\u30fc\u30c9\u304c\u6709\u52b9\uff08<code>-e 2<\/code>)\u3001\u8d77\u52d5\u30eb\u30fc\u30eb\u3092\u8abf\u6574\u3057\u3066\u518d\u8d77\u52d5\u3059\u308b\u3057\u304b\u3042\u308a\u307e\u305b\u3093\u3002. <strong>\u6642\u70b9\u3067\u306f<\/strong> \u6a29\u9650\u306b\u95a2\u3059\u308b\u554f\u984c\u306b\u3064\u3044\u3066 <code>\/var\/log\/audit\/<\/code> \u6240\u6709\u8005\u3068\u30e2\u30fc\u30c9\u3092\u5fa9\u5143\u3057\u307e\u3059\u3002SELinux\u304c\u6709\u52b9\u306a\u5834\u5408\u306f\u3001\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u3092\u4fee\u6b63\u3057\u307e\u3059\u3002. <strong>\u305d\u3057\u3066<\/strong> \u79c1\u306f\u4ee5\u4e0b\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002 <code>log_format = RAW<\/code> \u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u2015\u2015\u30d5\u30a9\u30ec\u30f3\u30b8\u30c3\u30af\u3084\u30d1\u30fc\u30b5\u30fc\u304c\u8aad\u307f\u53d6\u308a\u53ef\u80fd\u306a\u5165\u529b\u3002.<\/p>\n\n<h2>\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u74b0\u5883\u306b\u304a\u3051\u308b\u76e3\u67fb<\/h2>\n\n<p><strong>\u30b9\u30c8\u30ec\u30fc\u30c8<\/strong> \u30ef\u30fc\u30af\u30ed\u30fc\u30c9\u306e\u591a\u3044\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u74b0\u5883\u306b\u304a\u3044\u3066\u3001Auditd\u306f\u30c6\u30ca\u30f3\u30c8\u5206\u96e2\u306e\u72b6\u614b\u3092\u53ef\u8996\u5316\u3057\u3001\u4e0d\u6b63\u5229\u7528\u3092\u65e9\u671f\u306b\u691c\u77e5\u3059\u308b\u306e\u306b\u5f79\u7acb\u3063\u3066\u3044\u307e\u3059\u3002. <strong>I<\/strong> \u6bb5\u968e\u7684\u306a\u30eb\u30fc\u30eb\u30bb\u30c3\u30c8\u3092\u7528\u3044\u3066Web\u30b5\u30fc\u30d0\u30fc\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30b5\u30fc\u30d0\u30fc\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30b5\u30fc\u30d0\u30fc\u3092\u76e3\u8996\u3057\u3001\u305d\u306e\u30a4\u30d9\u30f3\u30c8\u3092\u65e2\u5b58\u306e\u76e3\u8996\u304a\u3088\u3073\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u5bfe\u5fdc\u30b7\u30b9\u30c6\u30e0\u306b\u7d71\u5408\u3057\u307e\u3059\u3002. <strong>\u306e\u305f\u3081\u306b<\/strong> \u4e00\u5143\u7684\u306a\u4fdd\u5b58\u3001\u5f79\u5272\u306e\u5206\u96e2\u3001\u304a\u3088\u3073\u30ed\u30b0\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3078\u306e\u30a2\u30af\u30bb\u30b9\u6a29\u306e\u53b3\u683c\u306a\u5236\u9650\u306b\u3088\u308a\u3001\u660e\u78ba\u306a\u5206\u96e2\u3092\u78ba\u4fdd\u3057\u3066\u3044\u307e\u3059\u3002. <strong>\u5b9b\u5148<\/strong> \u5fc5\u8981\u306b\u5fdc\u3058\u3066\u3001\u30b7\u30b9\u30c6\u30e0\u8a3a\u65ad\u306e\u88dc\u8db3\u3068\u3057\u3066\u4ee5\u4e0b\u3092\u8ffd\u52a0\u3057\u307e\u3059 <a href=\"https:\/\/webhosting.de\/ja\/journalctl-%e3%82%a8%e3%83%a9%e3%83%bc%e5%88%86%e6%9e%90-linux-%e3%82%b5%e3%83%bc%e3%83%90%e3%83%bc-%e3%83%ad%e3%82%ae%e3%83%b3%e3%82%b0-%e6%9c%80%e9%81%a9%e5%8c%96-%e8%a8%ba%e6%96%ad\/\">\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u306e\u305f\u3081\u306e journalctl<\/a>, \u3001\u305f\u3060\u3057\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4e0a\u91cd\u8981\u306a\u5206\u6790\u306f\u4e3b\u306b\u76e3\u67fb\u30c1\u30e3\u30cd\u30eb\u3067\u884c\u3046\u3002. <strong>\u7136\u308c\u3070<\/strong> \u3053\u308c\u306b\u3088\u308a\u3001\u9867\u5ba2\u306e\u5229\u76ca\u3001\u30b3\u30f3\u30d7\u30e9\u30a4\u30a2\u30f3\u30b9\u8981\u4ef6\u3001\u304a\u3088\u3073\u696d\u52d9\u52b9\u7387\u3092\u4e21\u7acb\u3055\u305b\u308b\u3001\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u76e3\u67fb\u8a3c\u8de1\u304c\u69cb\u7bc9\u3055\u308c\u307e\u3059\u3002.<\/p>\n\n<h2>\u624b\u77ed\u306b\uff1a\u79c1\u306e\u9032\u3081\u65b9<\/h2>\n\n<p><strong>I<\/strong> \u660e\u78ba\u306a\u76ee\u6a19\u50cf\u3092\u63b2\u3052\u3066\u958b\u59cb\u3057\u3001\u91cd\u8981\u306a\u30d5\u30a1\u30a4\u30eb\u3001execve\u3001\u304a\u3088\u3073\u6a29\u9650\u5909\u66f4\u306b\u95a2\u3059\u308b\u660e\u78ba\u306a\u30eb\u30fc\u30eb\u3092\u7b56\u5b9a\u3057\u3001\u30c7\u30fc\u30bf\u640d\u5931\u3092\u9632\u3050\u305f\u3081\u306b\u30ed\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u78ba\u5b9f\u306b\u5b9f\u65bd\u3057\u3066\u304f\u3060\u3055\u3044\u3002. <strong>\u305d\u308c\u304b\u3089<\/strong> TLS \u3092\u4f7f\u7528\u3057\u305f\u30ea\u30e2\u30fc\u30c8\u8ee2\u9001\u3092\u6709\u52b9\u306b\u3057\u3001\u9375\u3092\u8a18\u9332\u3057\u3001\u5404\u30eb\u30fc\u30eb\u306e\u52b9\u679c\u3092\u3001\u672c\u683c\u7684\u306b\u5c55\u958b\u3059\u308b\u524d\u306b\u30c6\u30b9\u30c8\u3057\u307e\u3059\u3002. <strong>\u306e\u305f\u3081\u306b<\/strong> \u65e5\u3005\u306e\u4ed5\u4e8b\u3067\u306f\u3001\u79c1\u306f\u4ee5\u4e0b\u3092\u91cd\u8996\u3057\u3066\u3044\u307e\u3059 <code>ausearch<\/code> \u305d\u3057\u3066 <code>aureport<\/code>, \u3001\u904b\u7528\u304a\u3088\u3073\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5411\u3051\u306b\u3001\u76ee\u7684\u3092\u7d5e\u3063\u305f\u691c\u7d22\u3092\u5b9f\u65bd\u3057\u3001\u5206\u304b\u308a\u3084\u3059\u3044\u30ec\u30dd\u30fc\u30c8\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002. <strong>\u6642\u70b9\u3067\u306f<\/strong> \u7570\u5e38\u304c\u691c\u51fa\u3055\u308c\u305f\u5834\u5408\u3001\u76e3\u67fb\u30a4\u30d9\u30f3\u30c8\u3092\u30d7\u30ed\u30bb\u30b9\u30c7\u30fc\u30bf\u3084\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30c7\u30fc\u30bf\u306a\u3069\u306e\u4ed6\u306e\u30b7\u30b0\u30ca\u30eb\u3068\u7167\u5408\u3057\u3001\u539f\u56e0\u3092\u8fc5\u901f\u306b\u7279\u5b9a\u3057\u307e\u3059\u3002. <strong>\u7136\u308c\u3070<\/strong> Linux\u306eAuditd\u306f\u3001\u5927\u91cf\u306e\u30ed\u30b0\u3092\u5410\u304d\u51fa\u3059\u306e\u3067\u306f\u306a\u304f\u3001\u672c\u756a\u74b0\u5883\u306b\u304a\u3051\u308b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u95a2\u9023\u306e\u7591\u554f\u306b\u5bfe\u3057\u3066\u660e\u78ba\u306a\u7b54\u3048\u3092\u4e0e\u3048\u3066\u304f\u308c\u307e\u3059\u3002.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/08\/linux-auditd-security-9185.png\" alt=\"\" width=\"1536\" 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