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class=\"post-ul\">\n<li>IptablesIptables Essentials: Common Firewall Rules and Commands<\/li>\n<li>UFWHow To Set Up a Firewall with UFW on Ubuntu 22.04<br \/>\nUFW Essentials: Common Firewall Rules and Commands<\/li>\n<li>FirewallDHow To Set Up a Firewall Using FirewallD on Rocky Linux 9<\/li>\n<\/ul>\n<p>\u3042\u306a\u305f\u306f\u3001\u30c7\u30b8\u30bf\u30eb\u30aa\u30fc\u30b7\u30e3\u30f3\u306e\u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u4e0a\u3067\u30b5\u30fc\u30d0\u30fc\u306e\u5916\u90e8\u30ec\u30a4\u30e4\u30fc\u3068\u3057\u3066\u52d5\u4f5c\u3059\u308b\u30c7\u30b8\u30bf\u30eb\u30aa\u30fc\u30b7\u30e3\u30f3\u306e\u30af\u30e9\u30a6\u30c9\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3082\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30b5\u30fc\u30d0\u30fc\u81ea\u4f53\u306b\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3092\u8a2d\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u3053\u306e\u30ac\u30a4\u30c9\u3067\u306f\u3001\u30c6\u30b9\u30c8\u3057\u305f\u3044\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u30dd\u30ea\u30b7\u30fc\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u30b5\u30fc\u30d0\u30fc\u3092\u300c\u30bf\u30fc\u30b2\u30c3\u30c8\u300d\u3068\u547c\u3073\u307e\u3059\u3002\u30bf\u30fc\u30b2\u30c3\u30c8\u306b\u52a0\u3048\u3066\u3001\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3067\u4fdd\u8b77\u3055\u308c\u3066\u3044\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u5916\u90e8\u306b\u4f4d\u7f6e\u3059\u308b\u3001\u30c6\u30b9\u30c8\u7528\u306e\u30b5\u30fc\u30d0\u30fc\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u5fc5\u8981\u3082\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u30ac\u30a4\u30c9\u3067\u306f\u3001\u76e3\u67fb\u7528\u30de\u30b7\u30f3\u3068\u3057\u3066Ubuntu 22.04\u30b5\u30fc\u30d0\u30fc\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n<p>\u30b5\u30fc\u30d0\u30fc\u30c6\u30b9\u30c8\u7528\u306b\u4f7f\u7528\u3067\u304d\u308b\u30b5\u30fc\u30d0\u30fc\u3068\u8a55\u4fa1\u3057\u305f\u3044\u5bfe\u8c61\u304c\u3042\u308c\u3070\u3001\u3053\u306e\u30ac\u30a4\u30c9\u3092\u9032\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<div class=\"post-conf-warning\">\n<p class=\"post-conf-desc\">Warning<\/p>\n<div>\u8b66\u544a<br \/>\n\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u76e3\u67fb\u306e\u76ee\u7684\u3067\u3001\u3053\u306e\u30ac\u30a4\u30c9\u3067\u8aac\u660e\u3055\u308c\u3066\u3044\u308b\u6d3b\u52d5\u306f\u3001\u7ba1\u7406\u4e0b\u306e\u30a4\u30f3\u30d5\u30e9\u4e0a\u3067\u306e\u307f\u5b9f\u884c\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u30dd\u30fc\u30c8\u30b9\u30ad\u30e3\u30f3\u306b\u95a2\u3059\u308b\u6cd5\u5f8b\u306f\u3001\u591a\u304f\u306e\u7ba1\u8f44\u533a\u57df\u3067\u4e0d\u78ba\u5b9a\u3067\u3059\u3002\u30dd\u30fc\u30c8\u30b9\u30ad\u30e3\u30f3\u304c\u767a\u899a\u3057\u305f\u30e6\u30fc\u30b6\u30fc\u306f\u3001ISP\u3084\u4ed6\u306e\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306b\u3088\u3063\u3066\u30a2\u30af\u30bb\u30b9\u7981\u6b62\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308b\u306e\u3067\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/div>\n<\/div>\n<h2>\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u30dd\u30ea\u30b7\u30fc\u3092\u30c6\u30b9\u30c8\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3059\u308b\u30c4\u30fc\u30eb<\/h2>\n<p>\u79c1\u305f\u3061\u306e\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u30dd\u30ea\u30b7\u30fc\u3092\u30c6\u30b9\u30c8\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3067\u304d\u308b\u3055\u307e\u3056\u307e\u306a\u30c4\u30fc\u30eb\u304c\u3044\u304f\u3064\u304b\u3042\u308a\u307e\u3059\u3002\u4e00\u90e8\u306e\u30c4\u30fc\u30eb\u306f\u6a5f\u80fd\u304c\u91cd\u8907\u3057\u3066\u3044\u307e\u3059\u3002\u3059\u3079\u3066\u306e\u53ef\u80fd\u306a\u30c4\u30fc\u30eb\u3092\u7db2\u7f85\u3059\u308b\u3053\u3068\u306f\u3057\u307e\u305b\u3093\u304c\u3001\u4ee3\u308f\u308a\u306b\u4e00\u822c\u7684\u306a\u76e3\u67fb\u30c4\u30fc\u30eb\u306e\u30ab\u30c6\u30b4\u30ea\u3068\u3001\u3053\u306e\u30ac\u30a4\u30c9\u3067\u4f7f\u7528\u3059\u308b\u30c4\u30fc\u30eb\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n<h3>\u30d1\u30b1\u30c3\u30c8\u89e3\u6790\u30c4\u30fc\u30eb<\/h3>\n<p>\u30d1\u30b1\u30c3\u30c8\u30a2\u30ca\u30e9\u30a4\u30b6\u30fc\u306f\u3001\u8a73\u7d30\u306a\u5f62\u3067\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u901a\u904e\u3059\u308b\u3059\u3079\u3066\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u76e3\u8996\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u307b\u3068\u3093\u3069\u306e\u30d1\u30b1\u30c3\u30c8\u30a2\u30ca\u30e9\u30a4\u30b6\u30fc\u306f\u3001\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u3067\u64cd\u4f5c\u3059\u308b\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u6301\u3063\u3066\u304a\u308a\u3001\u9001\u4fe1\u307e\u305f\u306f\u53d7\u4fe1\u3055\u308c\u308b\u30d1\u30b1\u30c3\u30c8\u3092\u8868\u793a\u3059\u308b\u304b\u3001\u30d1\u30b1\u30c3\u30c8\u60c5\u5831\u3092\u30d5\u30a1\u30a4\u30eb\u306b\u66f8\u304d\u8fbc\u3093\u3067\u5f8c\u3067\u51e6\u7406\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30d1\u30b1\u30c3\u30c8\u89e3\u6790\u306b\u3088\u308a\u3001\u30aa\u30fc\u30d7\u30f3\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u4e0a\u306e\u30db\u30b9\u30c8\u306b\u5bfe\u3057\u3066\u30bf\u30fc\u30b2\u30c3\u30c8\u30de\u30b7\u30f3\u304c\u3069\u306e\u3088\u3046\u306a\u7a2e\u985e\u306e\u5fdc\u7b54\u3092\u9001\u4fe1\u3057\u3066\u3044\u308b\u304b\u3001\u8a73\u7d30\u30ec\u30d9\u30eb\u3067\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u30ac\u30a4\u30c9\u3067\u306f\u3001tcpdump\u30c4\u30fc\u30eb\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u3053\u308c\u306f\u3001Linux\u30b7\u30b9\u30c6\u30e0\u3067\u5f37\u529b\u3067\u67d4\u8edf\u6027\u304c\u3042\u308a\u3001\u81f3\u308b\u6240\u3067\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u826f\u3044\u9078\u629e\u80a2\u3067\u3059\u3002\u5f8c\u306e\u5206\u6790\u306e\u305f\u3081\u306b\u30c8\u30e9\u30f3\u30b9\u30af\u30ea\u30d7\u30c8\u304c\u5fc5\u8981\u306b\u306a\u308b\u5834\u5408\u306b\u3001\u30c6\u30b9\u30c8\u3092\u5b9f\u884c\u3057\u3066\u3044\u308b\u9593\u751f\u306e\u30d1\u30b1\u30c3\u30c8\u3092\u30ad\u30e3\u30d7\u30c1\u30e3\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3057\u307e\u3059\u3002\u4ed6\u306e\u4eba\u6c17\u306e\u3042\u308b\u9078\u629e\u80a2\u306b\u306f\u3001Wireshark\uff08\u307e\u305f\u306f\u305d\u306e\u30b3\u30de\u30f3\u30c9\u30e9\u30a4\u30f3\u306e\u76f8\u4e92\u4f5c\u7528\u3067\u3042\u308btshark\uff09\u3084\u3001\u6574\u7406\u3055\u308c\u305f\u5f62\u5f0f\u3067\u5b8c\u5168\u306aTCP\u4f1a\u8a71\u3092\u7d44\u307f\u7acb\u3066\u308b\u3053\u3068\u304c\u3067\u304d\u308btcpflow\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3>\u30dd\u30fc\u30c8\u30b9\u30ad\u30e3\u30ca\u30fc<\/h3>\n<p>\u30d1\u30b1\u30c3\u30c8\u30a2\u30ca\u30e9\u30a4\u30b6\u304c\u30ad\u30e3\u30d7\u30c1\u30e3\u3059\u308b\u305f\u3081\u306e\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3068\u5fdc\u7b54\u3092\u751f\u6210\u3059\u308b\u305f\u3081\u306b\u3001\u30dd\u30fc\u30c8\u30b9\u30ad\u30e3\u30ca\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u30dd\u30fc\u30c8\u30b9\u30ad\u30e3\u30ca\u306f\u3055\u307e\u3056\u307e\u306a\u7a2e\u985e\u306e\u30d1\u30b1\u30c3\u30c8\u3092\u30ea\u30e2\u30fc\u30c8\u30db\u30b9\u30c8\u306b\u4f5c\u6210\u3057\u3066\u9001\u4fe1\u3057\u3001\u30b5\u30fc\u30d0\u30fc\u304c\u53d7\u3051\u5165\u308c\u308b\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u7a2e\u985e\u3092\u767a\u898b\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u60aa\u610f\u306e\u3042\u308b\u30e6\u30fc\u30b6\u30fc\u306f\u3001\u8106\u5f31\u306a\u30b5\u30fc\u30d3\u30b9\u3092\u63a2\u3059\u305f\u3081\u306e\u767a\u898b\u30c4\u30fc\u30eb\u3068\u3057\u3066\u3053\u308c\u3092\u3088\u304f\u4f7f\u7528\u3057\u307e\u3059\uff08\u6700\u521d\u306b\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3092\u4f7f\u7528\u3059\u308b\u7406\u7531\u306e\u4e00\u90e8\u3067\u3059\uff09\u3002\u3067\u3059\u306e\u3067\u3001\u3042\u306a\u305f\u306f\u3053\u308c\u3092\u4f7f\u3063\u3066\u653b\u6483\u8005\u304c\u4f55\u3092\u767a\u898b\u3067\u304d\u308b\u304b\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u30ac\u30a4\u30c9\u3067\u306f\u3001nmap\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30de\u30c3\u30d4\u30f3\u30b0\u304a\u3088\u3073\u30dd\u30fc\u30c8\u30b9\u30ad\u30e3\u30f3\u30c4\u30fc\u30eb\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002nmap\u3092\u4f7f\u7528\u3057\u3066\u3001\u3055\u307e\u3056\u307e\u306a\u7a2e\u985e\u306e\u30d1\u30b1\u30c3\u30c8\u3092\u9001\u4fe1\u3057\u3066\u3001\u5bfe\u8c61\u306e\u30de\u30b7\u30f3\u4e0a\u306b\u3069\u306e\u3088\u3046\u306a\u30b5\u30fc\u30d3\u30b9\u304c\u5b58\u5728\u3057\u3001\u3069\u306e\u3088\u3046\u306a\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u30eb\u30fc\u30eb\u3067\u4fdd\u8b77\u3055\u308c\u3066\u3044\u308b\u304b\u3092\u7279\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2>\u76e3\u67fb\u6a5f\u68b0\u306e\u8a2d\u5b9a<\/h2>\n<p>\u59cb\u3081\u308b\u524d\u306b\u3001\u5fc5\u8981\u306a\u30c4\u30fc\u30eb\u304c\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002tcpdump\u3068nmap\u306fUbuntu\u306e\u30ea\u30dd\u30b8\u30c8\u30ea\u304b\u3089\u5165\u624b\u3067\u304d\u307e\u3059\u3002\u30ed\u30fc\u30ab\u30eb\u30d1\u30c3\u30b1\u30fc\u30b8\u30ea\u30b9\u30c8\u3092\u66f4\u65b0\u3059\u308b\u305f\u3081\u306bapt update\u3092\u5b9f\u884c\u3057\u3001apt install\u3092\u4f7f\u7528\u3057\u3066\u305d\u308c\u3089\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">sudo<\/span> <span class=\"token function\">apt<\/span> update<\/li>\n<li data-prefix=\"$\"><span class=\"token function\">sudo<\/span> <span class=\"token function\">apt<\/span> <span class=\"token function\">install<\/span> tcpdump nmap<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u6b21\u306b\u3001\u30b9\u30ad\u30e3\u30f3\u7d50\u679c\u3092\u4fdd\u5b58\u3067\u304d\u308b\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u4f5c\u6210\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">mkdir<\/span> ~\/scan_results<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u30af\u30ea\u30fc\u30f3\u306a\u7d50\u679c\u3092\u78ba\u4fdd\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u76e3\u67fb\u30b7\u30b9\u30c6\u30e0\u3068\u30bf\u30fc\u30b2\u30c3\u30c8\u30b7\u30b9\u30c6\u30e0\u306e\u9593\u306b\u958b\u3044\u3066\u3044\u308b\u30bb\u30c3\u30b7\u30e7\u30f3\u3092\u7d42\u4e86\u3055\u305b\u3066\u304f\u3060\u3055\u3044\u3002\u3053\u308c\u306b\u306f\u3001SSH\u30bb\u30c3\u30b7\u30e7\u30f3\u3001\u30a6\u30a7\u30d6\u30d6\u30e9\u30a6\u30b6\u3067\u78ba\u7acb\u3057\u305fHTTP(S)\u63a5\u7d9a\u306a\u3069\u304c\u542b\u307e\u308c\u307e\u3059\u3002<\/p>\n<h2>\u30aa\u30fc\u30d7\u30f3\u306aTCP\u30dd\u30fc\u30c8\u3092\u30b9\u30ad\u30e3\u30f3\u3057\u3066\u3001\u30bf\u30fc\u30b2\u30c3\u30c8\u3092\u8abf\u3079\u3066\u304f\u3060\u3055\u3044\u3002 (\u014cpun na TCP p\u014dto o sukyan shite, t\u0101getto o shirabete kudasai.)<\/h2>\n<p>\u30b5\u30fc\u30d0\u30fc\u3068\u30d5\u30a1\u30a4\u30eb\u304c\u6e96\u5099\u3067\u304d\u305f\u306e\u3067\u3001\u307e\u305a\u306f\u30bf\u30fc\u30b2\u30c3\u30c8\u30db\u30b9\u30c8\u306e\u30aa\u30fc\u30d7\u30f3\u306aTCP\u30dd\u30fc\u30c8\u3092\u30b9\u30ad\u30e3\u30f3\u3057\u307e\u3059\u3002<\/p>\n<p>\u5b9f\u969b\u306b\u306f\u3001nmap\u304c\u77e5\u3063\u3066\u3044\u308b\u3044\u304f\u3064\u304b\u306eTCP\u30b9\u30ad\u30e3\u30f3\u304c\u3042\u308a\u307e\u3059\u3002\u901a\u5e38\u306f\u6700\u521d\u306b\u884c\u3046\u306e\u306f\u3001SYN\u30b9\u30ad\u30e3\u30f3\u3068\u547c\u3070\u308c\u308b\u3082\u306e\u3067\u3001\u5b9f\u969b\u306b\u306f\u5b8c\u5168\u306aTCP\u63a5\u7d9a\u306e\u4ea4\u6e09\u3092\u884c\u3044\u307e\u305b\u3093\u306e\u3067\u300c\u534a\u958b\u30b9\u30ad\u30e3\u30f3\u300d\u3068\u3082\u547c\u3070\u308c\u307e\u3059\u3002\u3053\u308c\u306f\u3057\u3070\u3057\u3070\u653b\u6483\u8005\u306b\u3088\u3063\u3066\u4f7f\u7528\u3055\u308c\u308b\u305f\u3081\u3001\u5b8c\u5168\u306a\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u3092\u5b8c\u4e86\u3055\u305b\u306a\u3044\u305f\u3081\u7279\u5b9a\u306e\u4fb5\u5165\u691c\u77e5\u30b7\u30b9\u30c6\u30e0\u306b\u767b\u9332\u3055\u308c\u305a\u3001\u691c\u77e5\u3055\u308c\u306a\u3044\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3>\u30d1\u30b1\u30c3\u30c8\u30ad\u30e3\u30d7\u30c1\u30e3\u306e\u8a2d\u5b9a<\/h3>\n<p>\u30c6\u30b9\u30c8\u3067\u751f\u6210\u3055\u308c\u308b\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u30ad\u30e3\u30d7\u30c1\u30e3\u3059\u308b\u305f\u3081\u306b\u3001\u30b9\u30ad\u30e3\u30f3\u524d\u306btcpdump\u3092\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u3057\u307e\u3059\u3002\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u3001\u5f8c\u3067\u3088\u308a\u8a73\u7d30\u306b\u9001\u53d7\u4fe1\u3055\u308c\u305f\u30d1\u30b1\u30c3\u30c8\u3092\u5206\u6790\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002 SYN\u30b9\u30ad\u30e3\u30f3\u306b\u95a2\u9023\u3059\u308b\u30d5\u30a1\u30a4\u30eb\u3092\u4e00\u7dd2\u306b\u4fdd\u6301\u3059\u308b\u305f\u3081\u306b\u3001~\/scan_results\u5185\u306b\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u4f5c\u6210\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">mkdir<\/span> ~\/scan_results\/syn_scan<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u6b21\u306e\u30b3\u30de\u30f3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u3001tcpdump\u30ad\u30e3\u30d7\u30c1\u30e3\u3092\u958b\u59cb\u3057\u3001\u7d50\u679c\u3092~\/scan_results\/syn_scan\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b\u30d5\u30a1\u30a4\u30eb\u3068\u3057\u3066\u66f8\u304d\u8fbc\u3080\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">sudo<\/span> tcpdump <span class=\"token function\">host<\/span> <mark>target_ip_addr<\/mark> <span class=\"token parameter variable\">-w<\/span> ~\/scan_results\/syn_scan\/packets<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u306f\u3001tcpdump\u306f\u524d\u9762\u3067\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002\u540c\u3058\u30a6\u30a3\u30f3\u30c9\u30a6\u3067nmap\u30b9\u30ad\u30e3\u30f3\u3092\u5b9f\u884c\u3059\u308b\u305f\u3081\u306b\u306f\u3001tcpdump\u30d7\u30ed\u30bb\u30b9\u3092\u4e00\u6642\u505c\u6b62\u3057\u3066\u30d0\u30c3\u30af\u30b0\u30e9\u30a6\u30f3\u30c9\u3067\u518d\u8d77\u52d5\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u300cCTRL-Z\u300d\u3092\u62bc\u3059\u3053\u3068\u3067\u3001\u5b9f\u884c\u4e2d\u306e\u30d7\u30ed\u30bb\u30b9\u3092\u4e00\u6642\u505c\u6b62\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>^Z [1]+ Stopped sudo tcpdump host <mark>target_ip_addr<\/mark> -w ~\/scan_results\/syn_scan\/packets<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u4eca\u3001\u80cc\u666f\u3067\u4ed5\u4e8b\u3092\u518d\u958b\u3059\u308b\u305f\u3081\u306b\u300cbg\u300d\u3068\u5165\u529b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">bg<\/span><\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u540c\u69d8\u306e\u51fa\u529b\u884c\u3092\u53d7\u3051\u53d6\u308b\u3079\u304d\u3067\u3059\u304c\u3001\u4eca\u56de\u306f\u300cStopped\u300d\u3068\u3044\u3046\u30e9\u30d9\u30eb\u306f\u306a\u304f\u3001\u30d7\u30ed\u30bb\u30b9\u304c\u30d0\u30c3\u30af\u30b0\u30e9\u30a6\u30f3\u30c9\u3067\u5b9f\u884c\u3055\u308c\u308b\u3053\u3068\u3092\u793a\u3059\u305f\u3081\u306b\u672b\u5c3e\u306b\u30a2\u30f3\u30d1\u30b5\u30f3\u30c9\u304c\u3064\u304d\u307e\u3059\uff08\u3064\u307e\u308a\u3001\u30bf\u30fc\u30df\u30ca\u30eb\u3092\u30d6\u30ed\u30c3\u30af\u3057\u306a\u304f\u306a\u308a\u307e\u3059\uff09\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>[1]+ sudo tcpdump host <mark>target_ip_addr<\/mark> -w ~\/scan_results\/syn_scan\/packets &amp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u30b3\u30de\u30f3\u30c9\u306f\u73fe\u5728\u30d0\u30c3\u30af\u30b0\u30e9\u30a6\u30f3\u30c9\u3067\u5b9f\u884c\u3055\u308c\u3001\u76e3\u67fb\u3068\u5bfe\u8c61\u306e\u30de\u30b7\u30f3\u9593\u3092\u884c\u304d\u6765\u3059\u308b\u30d1\u30b1\u30c3\u30c8\u3092\u76e3\u8996\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3067SYN\u30b9\u30ad\u30e3\u30f3\u3092\u5b9f\u884c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3>SYN\u30b9\u30ad\u30e3\u30f3\u3092\u5b9f\u884c\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/h3>\n<p>\u5bfe\u8c61\u306e\u30de\u30b7\u30f3\u3078\u306e\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092tcpdump\u3067\u8a18\u9332\u3057\u3001nmap\u3092\u5b9f\u884c\u3059\u308b\u6e96\u5099\u304c\u3067\u304d\u307e\u3057\u305f\u3002\u4ee5\u4e0b\u306e\u30d5\u30e9\u30b0\u3092\u4f7f\u7528\u3057\u3066nmap\u3092\u5b9f\u884c\u3067\u304d\u307e\u3059\uff1a<\/p>\n<ul class=\"post-ul\">\n<li>-sS: This starts a SYN scan. This is technically the default scan that nmap will perform if no scan type is given, but we will include it here to be explicit.<\/li>\n<li>-Pn: This tells nmap to skip the host discovery step, which would abort the test early if the host doesn\u2019t respond to a ping. Since you know that the target is online, you can skip this.<\/li>\n<li>-p-: By default, SYN scans will only try the 1000 most commonly used ports. This tells nmap to check every available port.<\/li>\n<li>-T4: This sets a timing profile for nmap, telling it to speed up the test at the risk of slightly less accurate results. 0 is the slowest and 5 is the fastest. Since you\u2019re scanning every port, you can use this as your baseline and re-check any ports later that might have been reported incorrectly.<\/li>\n<li>-vv: This increases the verbosity of the output.<\/li>\n<li>&#8211;reason: This tells nmap to provide the reason that a port\u2019s state was reported a certain way.<\/li>\n<li>-oN: This writes the results to a file that you can use for later analysis.<\/li>\n<\/ul>\n<div class=\"post-conf-note\">\n<p class=\"post-conf-desc\">Note<\/p>\n<div>\u6ce8\u610f\uff1aIPv6\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u30b3\u30de\u30f3\u30c9\u306b-6\u30d5\u30e9\u30b0\u3092\u8ffd\u52a0\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059&#8230;<\/div>\n<\/div>\n<p>\u4e00\u7dd2\u306b\u3001\u30b3\u30de\u30f3\u30c9\u306f\u3053\u3093\u306a\u611f\u3058\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">sudo<\/span> nmap <span class=\"token parameter variable\">-sS<\/span> <span class=\"token parameter variable\">-Pn<\/span> -p- <span class=\"token parameter variable\">-T4<\/span> <span class=\"token parameter variable\">-vv<\/span> <span class=\"token parameter variable\">&#8211;reason<\/span> <span class=\"token parameter variable\">-oN<\/span> ~\/scan_results\/syn_scan\/nmap.results <mark>target_ip_addr<\/mark><\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u30bf\u30a4\u30df\u30f3\u30b0\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u30924\u3067\u8a2d\u5b9a\u3057\u3066\u3082\u300165,535\u306e\u30dd\u30fc\u30c8\u3092\u8d70\u67fb\u3059\u308b\u305f\u3081\u304b\u306a\u308a\u306e\u6642\u9593\u304c\u304b\u304b\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u3088\u3046\u306a\u5f62\u3067\u7d50\u679c\u304c\u5370\u5237\u3055\u308c\u59cb\u3081\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>Starting Nmap 6.49BETA4 ( https:\/\/nmap.org ) at 2022-12-19 16:54 EDT Initiating Parallel DNS resolution of 1 host. at 16:54 Completed Parallel DNS resolution of 1 host. at 16:54, 0.12s elapsed Initiating SYN Stealth Scan at 16:54 Scanning 198.51.100.15 [65535 ports] Discovered open port 22\/tcp on 198.51.100.15 Discovered open port 80\/tcp on 198.51.100.15 SYN Stealth Scan Timing: About 6.16% done; ETC: 17:02 (0:07:52 remaining) SYN Stealth Scan Timing: About 8.60% done; ETC: 17:06 (0:10:48 remaining) . . .<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<h3>tcpdump\u306e\u30d1\u30b1\u30c3\u30c8\u30ad\u30e3\u30d7\u30c1\u30e3\u3092\u505c\u6b62\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/h3>\n<p>\u30b9\u30ad\u30e3\u30f3\u304c\u5b8c\u4e86\u3057\u305f\u3089\u3001tcpdump\u30d7\u30ed\u30bb\u30b9\u3092\u524d\u666f\u306b\u623b\u3057\u3066\u505c\u6b62\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u30d0\u30c3\u30af\u30b0\u30e9\u30a6\u30f3\u30c9\u304b\u3089\u53d6\u308a\u51fa\u3059\u305f\u3081\u306b\u3001fg\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">fg<\/span><\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>Ctrl+C\u3092\u62bc\u3057\u3066\u3001\u5b9f\u884c\u4e2d\u306e\u30d7\u30ed\u30bb\u30b9\u3092\u505c\u6b62\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h3>\u7d50\u679c\u306e\u5206\u6790<\/h3>\n<p>\u4eca\u3001~\/scan_results\/syn_scan\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b\u306f2\u3064\u306e\u30d5\u30a1\u30a4\u30eb\u304c\u3042\u308b\u306f\u305a\u3067\u3059\u30021\u3064\u306ftcpdump\u5b9f\u884c\u306b\u3088\u3063\u3066\u751f\u6210\u3055\u308c\u305fpackets\u3068\u3044\u3046\u540d\u524d\u306e\u30d5\u30a1\u30a4\u30eb\u3067\u3042\u308a\u3001\u3082\u30461\u3064\u306fnmap\u306b\u3088\u3063\u3066\u751f\u6210\u3055\u308c\u305fnmap.results\u3068\u3044\u3046\u540d\u524d\u306e\u30d5\u30a1\u30a4\u30eb\u3067\u3059\u3002<\/p>\n<p>\u6700\u521d\u306bnmap.results\u30d5\u30a1\u30a4\u30eb\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">less<\/span> ~\/scan_results\/syn_scan\/nmap.results<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div>~\/scan_results\/syn_scan\/nmap.results\u3092\u65e5\u672c\u8a9e\u3067\u3082\u81ea\u7136\u306b\u66f8\u304d\u63db\u3048\u3066\u304f\u3060\u3055\u3044\u30021\u3064\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u7d50\u69cb\u3067\u3059\uff1a ~\/\u30b9\u30ad\u30e3\u30f3\u7d50\u679c\/\u30b7\u30f3\u30af\u30b9\u30ad\u30e3\u30f3\/nmap.results<\/div>\n<pre class=\"post-pre\"><code># Nmap 6.49BETA4 scan initiated Mon Dec 19 17:05:13 2022 as: nmap -sS -Pn -p- -T4 -vv --reason -oN \/home\/user\/scan_results\/syn_scan\/nmap.results 198.51.100.15\r\nIncreasing send delay for 198.51.100.15 from 0 to 5 due to 9226 out of 23064 dropped probes since last increase.\r\nIncreasing send delay for 198.51.100.15 from 5 to 10 due to 14 out of 34 dropped probes since last increase.\r\nNmap scan report for 198.51.100.15\r\nHost is up, received user-set (0.00097s latency).\r\nScanned at 2022-12-19 17:05:13 EDT for 2337s\r\n<mark>Not shown: 65533 closed ports<\/mark>\r\n<mark>Reason: 65533 resets<\/mark>\r\n<mark>PORT   STATE SERVICE REASON<\/mark>\r\n<mark>22\/tcp open  ssh     syn-ack ttl 63<\/mark>\r\n<mark>80\/tcp open  http    syn-ack ttl 63<\/mark>\r\n\r\nRead data files from: \/usr\/local\/bin\/..\/share\/nmap\r\n# Nmap done at Mon Dec 19 17:44:10 2022 -- 1 IP address (1 host up) scanned in 2336.85 seconds\r\n<\/code><\/pre>\n<p>\u4e0a\u8a18\u306e\u30cf\u30a4\u30e9\u30a4\u30c8\u3055\u308c\u305f\u7bc4\u56f2\u306b\u306f\u3001\u30b9\u30ad\u30e3\u30f3\u306e\u4e3b\u306a\u7d50\u679c\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002\u30b9\u30ad\u30e3\u30f3\u5bfe\u8c61\u306e\u30db\u30b9\u30c8\u3067\u306f\u3001SSH\u304a\u3088\u3073HTTP\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u8a31\u53ef\u3059\u308b\u305f\u3081\u3001\u30dd\u30fc\u30c822\u304a\u3088\u3073\u30dd\u30fc\u30c880\u304c\u958b\u3044\u3066\u3044\u308b\u3053\u3068\u304c\u63a8\u6e2c\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u3001\u9589\u3058\u3089\u308c\u3066\u3044\u308b\u30dd\u30fc\u30c8\u306f65,533\u500b\u3042\u308b\u3053\u3068\u3082\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002\u5225\u306e\u53ef\u80fd\u306a\u7d50\u679c\u306f\u300c\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3055\u308c\u305f\u300d\u3068\u306a\u308a\u307e\u3059\u3002\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3055\u308c\u305f\u3068\u306f\u3001\u3053\u308c\u3089\u306e\u30dd\u30fc\u30c8\u304c\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u7d4c\u8def\u4e0a\u306e\u4f55\u304b\u306b\u3088\u3063\u3066\u30d6\u30ed\u30c3\u30af\u3055\u308c\u305f\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u5bfe\u8c61\u306e\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3067\u3042\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3057\u3001\u76e3\u67fb\u6a5f\u3068\u5bfe\u8c61\u6a5f\u306e\u9593\u306e\u4e2d\u9593\u30db\u30b9\u30c8\u306e\u3044\u305a\u308c\u304b\u306b\u304a\u3051\u308b\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u30eb\u30fc\u30eb\u3067\u3042\u308b\u53ef\u80fd\u6027\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u5b9f\u969b\u306b\u9001\u53d7\u4fe1\u3055\u308c\u305f\u30d1\u30b1\u30c3\u30c8\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u78ba\u8a8d\u3059\u308b\u306b\u306f\u3001\u6b21\u306e\u3088\u3046\u306b\u30d1\u30b1\u30c3\u30c8\u30d5\u30a1\u30a4\u30eb\u3092tcpdump\u306b\u8aad\u307f\u8fbc\u3080\u3053\u3068\u3067\u53ef\u80fd\u3067\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">sudo<\/span> tcpdump <span class=\"token parameter variable\">-nn<\/span> <span class=\"token parameter variable\">-r<\/span> ~\/scan_results\/syn_scan\/packets <span class=\"token operator\">|<\/span> <span class=\"token function\">less<\/span><\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u3053\u306e\u30d5\u30a1\u30a4\u30eb\u306b\u306f\u3001\u4e8c\u4eba\u306e\u30db\u30b9\u30c8\u9593\u3067\u884c\u308f\u308c\u305f\u5168\u3066\u306e\u4f1a\u8a71\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002\u69d8\u3005\u306a\u65b9\u6cd5\u3067\u7d5e\u308a\u8fbc\u3080\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u4f8b\u3048\u3070\u3001\u30bf\u30fc\u30b2\u30c3\u30c8\u306b\u9001\u4fe1\u3055\u308c\u308b\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u307f\u3092\u8868\u793a\u3059\u308b\u306b\u306f\u3001\u6b21\u306e\u3088\u3046\u306b\u5165\u529b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059:<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">sudo<\/span> tcpdump <span class=\"token parameter variable\">-nn<\/span> <span class=\"token parameter variable\">-r<\/span> ~\/scan_results\/syn_scan\/packets <span class=\"token string\">&#8216;dst <mark>target_ip_addr<\/mark>&#8216;<\/span> <span class=\"token operator\">|<\/span> <span class=\"token function\">less<\/span><\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u540c\u3058\u3088\u3046\u306b\u3001\u5fdc\u7b54\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u307f\u3092\u8868\u793a\u3059\u308b\u305f\u3081\u306b\u306f\u3001dst\u3092src\u306b\u5909\u66f4\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">sudo<\/span> tcpdump <span class=\"token parameter variable\">-nn<\/span> <span class=\"token parameter variable\">-r<\/span> ~\/scan_results\/syn_scan\/packets <span class=\"token string\">&#8216;src <mark>target_ip_addr<\/mark>&#8216;<\/span> <span class=\"token operator\">|<\/span> <span class=\"token function\">less<\/span><\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>SYN \u30d1\u30b1\u30c3\u30c8\u306b\u3088\u3063\u3066\u3001\u30aa\u30fc\u30d7\u30f3\u306a TCP \u30dd\u30fc\u30c8\u306f\u3053\u308c\u3089\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u306b\u5fdc\u7b54\u3057\u307e\u3059\u3002\u3053\u306e\u30bf\u30a4\u30d7\u306e\u5fdc\u7b54\u3092\u76f4\u63a5\u691c\u7d22\u3059\u308b\u306b\u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u30d5\u30a3\u30eb\u30bf\u30fc\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">sudo<\/span> tcpdump <span class=\"token parameter variable\">-nn<\/span> <span class=\"token parameter variable\">-r<\/span> ~\/scan_results\/syn_scan\/packets <span class=\"token string\">&#8216;src <mark>target_ip_addr<\/mark> and tcp[tcpflags] &amp; tcp-syn != 0&#8242;<\/span> <span class=\"token operator\">|<\/span> <span class=\"token function\">less<\/span><\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u3053\u308c\u306b\u3088\u308a\u3001\u6210\u529f\u3057\u305fSYN\u5fdc\u7b54\u306e\u307f\u304c\u8868\u793a\u3055\u308c\u3001nmap\u5b9f\u884c\u6642\u306b\u898b\u305f\u30dd\u30fc\u30c8\u3068\u4e00\u81f4\u3059\u308b\u306f\u305a\u3067\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>reading from file packets, link-type EN10MB (Ethernet) 17:05:13.557597 IP 198.51.100.15.22 &gt; 198.51.100.2.63872: Flags [S.], seq 2144564104, ack 4206039348, win 29200, options [mss 1460], length 0 17:05:13.558085 IP 198.51.100.15.80 &gt; 198.51.100.2.63872: Flags [S.], seq 3550723926, ack 4206039348, win 29200, options [mss 1460], length 0<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u3001\u30c7\u30fc\u30bf\u306e\u3055\u3089\u306a\u308b\u5206\u6790\u304c\u53ef\u80fd\u3067\u3059\u3002\u3059\u3079\u3066\u306e\u30c7\u30fc\u30bf\u306f\u975e\u540c\u671f\u51e6\u7406\u3068\u5206\u6790\u306e\u305f\u3081\u306b\u6349\u3048\u3089\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>\u30aa\u30fc\u30d7\u30f3\u306aUDP\u30dd\u30fc\u30c8\u3092\u30b9\u30ad\u30e3\u30f3\u3057\u3066\u3001\u5bfe\u8c61\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/h2>\n<p>\u3053\u308c\u3089\u306e\u30c6\u30b9\u30c8\u306e\u5b9f\u884c\u65b9\u6cd5\u306b\u628a\u63e1\u304c\u3067\u304d\u305f\u306e\u3067\u3001\u540c\u69d8\u306e\u30d7\u30ed\u30bb\u30b9\u3092\u5b8c\u4e86\u3055\u305b\u308b\u3053\u3068\u3067\u3001\u30aa\u30fc\u30d7\u30f3\u306aUDP\u30dd\u30fc\u30c8\u306e\u30b9\u30ad\u30e3\u30f3\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3>\u30d1\u30b1\u30c3\u30c8\u30ad\u30e3\u30d7\u30c1\u30e3\u306e\u8a2d\u5b9a\u3092\u884c\u3046<\/h3>\n<p>\u3082\u3046\u4e00\u5ea6\u3001\u7d50\u679c\u3092\u4fdd\u6301\u3059\u308b\u305f\u3081\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u4f5c\u6210\u3057\u3066\u304f\u3060\u3055\u3044\u3002 (M\u014dichido, kekka o hoji suru tame no direkutori o sakusei shite kudasai.)<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">mkdir<\/span> ~\/scan_results\/udp_scan<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u4eca\u5ea6\u306ftcpdump\u306e\u30ad\u30e3\u30d7\u30c1\u30e3\u3092\u518d\u958b\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u4eca\u56de\u306f\u3001\u65b0\u3057\u3044~\/scan_results\/udp_scan\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b\u30d5\u30a1\u30a4\u30eb\u3092\u66f8\u304d\u8fbc\u3093\u3067\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">sudo<\/span> tcpdump <span class=\"token function\">host<\/span> <mark>target_ip_addr<\/mark> <span class=\"token parameter variable\">-w<\/span> ~\/scan_results\/udp_scan\/packets<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u30d7\u30ed\u30bb\u30b9\u3092\u4e00\u6642\u505c\u6b62\u3057\u3001Ctrl+Z \u3092\u5165\u529b\u3057\u3066\u30d0\u30c3\u30af\u30b0\u30e9\u30a6\u30f3\u30c9\u306b\u79fb\u52d5\u3055\u305b\u3066\u304f\u3060\u3055\u3044\u3002\u305d\u306e\u5f8c\u3001bg\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">bg<\/span><\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<h3>UDP\u30b9\u30ad\u30e3\u30f3\u3092\u5b9f\u884c\u3059\u308b<\/h3>\n<p>\u4eca\u306fUDP\u30b9\u30ad\u30e3\u30f3\u3092\u5b9f\u884c\u3059\u308b\u6e96\u5099\u304c\u6574\u3044\u307e\u3057\u305f\u3002UDP\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u6027\u8cea\u4e0a\u3001\u3053\u306e\u30b9\u30ad\u30e3\u30f3\u306f\u901a\u5e38\u3001SYN\u30b9\u30ad\u30e3\u30f3\u3088\u308a\u3082\u306f\u308b\u304b\u306b\u9577\u6642\u9593\u304b\u304b\u308a\u307e\u3059\u3002\u5b9f\u969b\u306b\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u3059\u3079\u3066\u306e\u30dd\u30fc\u30c8\u3092\u30b9\u30ad\u30e3\u30f3\u3059\u308b\u5834\u5408\u30011\u65e5\u4ee5\u4e0a\u304b\u304b\u308b\u5834\u5408\u3082\u3042\u308a\u307e\u3059\u3002UDP\u306f\u63a5\u7d9a\u3092\u6301\u305f\u306a\u3044\u30d7\u30ed\u30c8\u30b3\u30eb\u306a\u306e\u3067\u3001\u5fdc\u7b54\u304c\u306a\u3044\u5834\u5408\u3001\u30bf\u30fc\u30b2\u30c3\u30c8\u306e\u30dd\u30fc\u30c8\u304c\u30d6\u30ed\u30c3\u30af\u3055\u308c\u3066\u3044\u308b\u304b\u3001\u53d7\u3051\u5165\u308c\u3089\u308c\u3066\u3044\u308b\u304b\u3001\u30d1\u30b1\u30c3\u30c8\u304c\u5931\u308f\u308c\u305f\u304b\u3092\u610f\u5473\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u3089\u3092\u533a\u5225\u3059\u308b\u305f\u3081\u306b\u3001nmap\u306f\u8ffd\u52a0\u306e\u30d1\u30b1\u30c3\u30c8\u3092\u518d\u9001\u4fe1\u3057\u3066\u5fdc\u7b54\u3092\u53d6\u5f97\u3057\u3088\u3046\u3068\u3057\u307e\u3059\u3002<\/p>\n<p>SYN\u30b9\u30ad\u30e3\u30f3\u3068\u540c\u3058\u304f\u3001\u307b\u3068\u3093\u3069\u306e\u30d5\u30e9\u30b0\u304c\u540c\u3058\u3067\u3042\u308b\u3053\u3068\u304c\u4e88\u60f3\u3055\u308c\u307e\u3059\u3002\u5b9f\u969b\u3001\u65b0\u3057\u3044\u30d5\u30e9\u30b0\u306f\u305f\u3063\u305f\u4e00\u3064\u306e\u307f\u3067\u3059\u3002<\/p>\n<ul class=\"post-ul\">\n<li>-sU: This tells nmap to perform a UDP scan.<\/li>\n<\/ul>\n<h4>UDP\u30c6\u30b9\u30c8\u306e\u901f\u5ea6\u3092\u5411\u4e0a\u3055\u305b\u308b<\/h4>\n<p>\u3082\u3057\u30c6\u30b9\u30c8\u306b\u304b\u304b\u308b\u6642\u9593\u304c\u5fc3\u914d\u306a\u3089\u3001\u6700\u521d\u306f\u3042\u306a\u305f\u306eUDP\u30dd\u30fc\u30c8\u306e\u3046\u3061\u306e\u4e00\u90e8\u3092\u30c6\u30b9\u30c8\u3059\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002-p-\u30d5\u30e9\u30b0\u3092\u7701\u7565\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u304f\u4f7f\u308f\u308c\u308b1000\u306e\u30dd\u30fc\u30c8\u3060\u3051\u3092\u30c6\u30b9\u30c8\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30b9\u30ad\u30e3\u30f3\u6642\u9593\u3092\u304b\u306a\u308a\u77ed\u7e2e\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u5b8c\u5168\u306a\u60c5\u5831\u3092\u5f97\u305f\u3044\u5834\u5408\u306f\u3001\u5f8c\u3067\u5168\u30dd\u30fc\u30c8\u3092\u30b9\u30ad\u30e3\u30f3\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u81ea\u5206\u81ea\u8eab\u306e\u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u3092\u30b9\u30ad\u30e3\u30f3\u3057\u3066\u3044\u308b\u305f\u3081\u3001UDP\u30b9\u30ad\u30e3\u30f3\u3092\u9ad8\u901f\u5316\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u30bf\u30fc\u30b2\u30c3\u30c8\u30b7\u30b9\u30c6\u30e0\u3067\u4e00\u6642\u7684\u306bICMP\u306e\u30ec\u30fc\u30c8\u5236\u9650\u3092\u7121\u52b9\u306b\u3059\u308b\u306e\u304c\u6700\u5584\u306e\u9078\u629e\u80a2\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u901a\u5e38\u3001Linux\u30db\u30b9\u30c8\u306fICMP\u306e\u5fdc\u7b54\u30921\u79d2\u3054\u3068\u306b\u5236\u9650\u3057\u3066\u3044\u307e\u3059\uff08\u3053\u308c\u306f\u901a\u5e38\u306f\u826f\u3044\u3053\u3068\u3067\u3059\u304c\u3001\u76e3\u67fb\u306e\u5834\u5408\u306f\u305d\u3046\u3067\u306f\u3042\u308a\u307e\u305b\u3093\uff09\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u5b8c\u5168\u306aUDP\u30b9\u30ad\u30e3\u30f3\u306b\u306f18\u6642\u9593\u4ee5\u4e0a\u304b\u304b\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u30bf\u30fc\u30b2\u30c3\u30c8\u30de\u30b7\u30f3\u306e\u8a2d\u5b9a\u3092\u78ba\u8a8d\u3059\u308b\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u30b3\u30de\u30f3\u30c9\u3092\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"target_machine $\"><span class=\"token function\">sudo<\/span> <span class=\"token function\">sysctl<\/span> net.ipv4.icmp_ratelimit<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>net.ipv4.icmp_ratelimit = 1000<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u300c1000\u300d\u306f\u30ec\u30b9\u30dd\u30f3\u30b9\u9593\u306e\u30df\u30ea\u79d2\u5358\u4f4d\u306e\u6570\u5b57\u3067\u3059\u3002\u30bf\u30fc\u30b2\u30c3\u30c8\u30b7\u30b9\u30c6\u30e0\u4e0a\u3067\u3053\u306e\u30ec\u30fc\u30c8\u5236\u9650\u3092\u4e00\u6642\u7684\u306b\u7121\u52b9\u306b\u3059\u308b\u306b\u306f\u3001\u6b21\u306e\u3088\u3046\u306b\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"target_machine $\"><span class=\"token function\">sudo<\/span> <span class=\"token function\">sysctl<\/span> <span class=\"token parameter variable\">-w<\/span> <span class=\"token assign-left variable\">net.ipv4.icmp_ratelimit<\/span><span class=\"token operator\">=<\/span><span class=\"token number\">0<\/span><\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u30c6\u30b9\u30c8\u5f8c\u306b\u3053\u306e\u5024\u3092\u5143\u306b\u623b\u3059\u3053\u3068\u306f\u975e\u5e38\u306b\u91cd\u8981\u3067\u3059\u3002<\/p>\n<h4>\u30c6\u30b9\u30c8\u3092\u5b9f\u884c\u3057\u3066\u3044\u307e\u3059\u3002<\/h4>\n<p>\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u7d50\u679c\u306f~\/scan_results\/udp_scan \u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b\u66f8\u304d\u8fbc\u307e\u308c\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">sudo<\/span> nmap <span class=\"token parameter variable\">-sU<\/span> <span class=\"token parameter variable\">-Pn<\/span> -p- <span class=\"token parameter variable\">-T4<\/span> <span class=\"token parameter variable\">-vv<\/span> <span class=\"token parameter variable\">&#8211;reason<\/span> <span class=\"token parameter variable\">-oN<\/span> ~\/scan_results\/udp_scan\/nmap.results <mark>target_ip_addr<\/mark><\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u30b9\u30ad\u30e3\u30f3\u304c\u5b8c\u4e86\u3057\u305f\u3089\u3001\u5bfe\u8c61\u306e\u30de\u30b7\u30f3\u3067 ICMP \u306e\u30ec\u30fc\u30c8\u30ea\u30df\u30c3\u30c8\u3092\u5143\u306b\u623b\u3057\u3066\u304f\u3060\u3055\u3044\uff08\u5909\u66f4\u3057\u305f\u5834\u5408\uff09\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"target_machine $\"><span class=\"token function\">sudo<\/span> <span class=\"token function\">sysctl<\/span> <span class=\"token parameter variable\">-w<\/span> <span class=\"token assign-left variable\">net.ipv4.icmp_ratelimit<\/span><span class=\"token operator\">=<\/span><span class=\"token number\">1000<\/span><\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<h3>tcpdump\u306e\u30d1\u30b1\u30c3\u30c8\u30ad\u30e3\u30d7\u30c1\u30e3\u3092\u505c\u6b62\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/h3>\n<p>\u76e3\u67fb\u30de\u30b7\u30f3\u4e0a\u3067\u5b9f\u884c\u4e2d\u306etcpdump\u30d7\u30ed\u30bb\u30b9\u3092\u524d\u9762\u306b\u623b\u3059\u305f\u3081\u306b\u3001fg\u3092\u5b9f\u884c\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">fg<\/span><\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u3067\u306f\u3001Ctrl+C\u3067\u30d1\u30b1\u30c3\u30c8\u306e\u30ad\u30e3\u30d7\u30c1\u30e3\u3092\u505c\u6b62\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h3>\u7d50\u679c\u306e\u5206\u6790<\/h3>\n<p>\u4eca\u3001\u751f\u6210\u3055\u308c\u305f\u30d5\u30a1\u30a4\u30eb\u3092\u3054\u89a7\u3044\u305f\u3060\u3051\u307e\u3059\u3002<\/p>\n<p>\u751f\u6210\u3055\u308c\u308bnmap.results\u30d5\u30a1\u30a4\u30eb\u306f\u3001\u524d\u56de\u306e\u7d50\u679c\u306b\u4f3c\u3066\u3044\u308b\u306f\u305a\u3067\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">less<\/span> ~\/scan_results\/udp_scan\/nmap.results<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div>\u4ee5\u4e0b\u306e\u6587\u3092\u65e5\u672c\u8a9e\u3067\u8a00\u3044\u63db\u3048\u307e\u3059\uff081\u3064\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u307f\u3092\u63d0\u4f9b\uff09\uff1a<br \/>\n~\/scan_results\/udp_scan\/nmap.results\u2192 \u300c~\/scan_results\/udp_scan\/nmap.results\u300d\u3068\u3044\u3046\u30d5\u30a1\u30a4\u30eb\u30d1\u30b9\u5185\u306e\u7d50\u679c\u3092\u30b9\u30ad\u30e3\u30f3\u3057\u307e\u3059\u3002<\/p>\n<\/div>\n<pre class=\"post-pre\"><code># Nmap 6.49BETA4 scan initiated Mon Dec 19 12:42:42 2022 as: nmap -sU -Pn -p- -T4 -vv --reason -oN \/home\/user\/scan_results\/udp_scan\/nmap.results 198.51.100.15\r\nIncreasing send delay for 198.51.100.15 from 0 to 50 due to 10445 out of 26111 dropped probes since last increase.\r\nIncreasing send delay for 198.51.100.15 from 50 to 100 due to 11 out of 23 dropped probes since last increase.\r\nIncreasing send delay for 198.51.100.15 from 100 to 200 due to 3427 out of 8567 dropped probes since last increase.\r\nNmap scan report for 198.51.100.15\r\nHost is up, received user-set (0.0010s latency).\r\nScanned at 2022-12-19 12:42:42 EDT for 9956s\r\nNot shown: 65532 closed ports\r\nReason: 65532 port-unreaches\r\nPORT    STATE         SERVICE REASON\r\n22\/udp  open|filtered ssh     no-response\r\n80\/udp  open|filtered http    no-response\r\n443\/udp open|filtered https   no-response\r\n\r\nRead data files from: \/usr\/local\/bin\/..\/share\/nmap\r\n# Nmap done at Mon Dec 19 15:28:39 2022 -- 1 IP address (1 host up) scanned in 9956.97 seconds\r\n<\/code><\/pre>\n<p>\u3053\u306e\u7d50\u679c\u3068\u4ee5\u524d\u306eSYN\u7d50\u679c\u3068\u306e\u4e3b\u306a\u9055\u3044\u306f\u3001\u304a\u305d\u3089\u304f\u30aa\u30fc\u30d7\u30f3\/\u30d5\u30a3\u30eb\u30bf\u3055\u308c\u305f\u30dd\u30fc\u30c8\u306e\u6570\u3067\u3059\u3002\u3064\u307e\u308a\u3001nmap\u304c\u5fdc\u7b54\u304c\u306a\u3044\u3053\u3068\u304c\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u53d7\u3051\u5165\u308c\u308b\u30b5\u30fc\u30d3\u30b9\u3067\u3042\u308b\u304b\u3001\u305d\u308c\u3068\u3082\u914d\u4fe1\u7d4c\u8def\u4e0a\u306e\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3084\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u30e1\u30ab\u30cb\u30ba\u30e0\u306b\u3088\u3063\u3066\u30c9\u30ed\u30c3\u30d7\u3055\u308c\u305f\u304b\u3092\u5224\u65ad\u3067\u304d\u306a\u304b\u3063\u305f\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002<\/p>\n<p>tcpdump\u306e\u51fa\u529b\u3092\u5206\u6790\u3059\u308b\u3053\u3068\u306f\u3001\u63a5\u7d9a\u30d5\u30e9\u30b0\u304c\u306a\u3044\u305f\u3081\u306b\u8457\u3057\u304f\u96e3\u3057\u304f\u306a\u308a\u307e\u3059\u3057\u3001\u307e\u305fICMP\u306e\u5fdc\u7b54\u3092UDP\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u306b\u4e00\u81f4\u3055\u305b\u308b\u5fc5\u8981\u304c\u3042\u308b\u305f\u3081\u3067\u3059\u3002<\/p>\n<p>\u30aa\u30fc\u30d7\u30f3|\u30d5\u30a3\u30eb\u30bf\u30fc\u3055\u308c\u305f\u3068\u5831\u544a\u3055\u308c\u305f\u30dd\u30fc\u30c8\u3078\u306eUDP\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u8868\u793a\u3059\u308b\u3053\u3068\u3067\u3001nmap\u304c\u9001\u4fe1\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u304b\u3063\u305f\u30d1\u30b1\u30c3\u30c8\u306e\u6570\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">sudo<\/span> tcpdump <span class=\"token parameter variable\">-nn<\/span> <span class=\"token parameter variable\">-Q<\/span> out <span class=\"token parameter variable\">-r<\/span> ~\/scan_results\/udp_scan\/packets <span class=\"token string\">&#8216;udp and port 22&#8217;<\/span><\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>reading from file \/home\/user\/scan_results\/udp_scan\/packets, link-type EN10MB (Ethernet) 14:57:40.801956 IP 198.51.100.2.60181 &gt; 198.51.100.15.22: UDP, length 0 14:57:41.002364 IP 198.51.100.2.60182 &gt; 198.51.100.15.22: UDP, length 0 14:57:41.202702 IP 198.51.100.2.60183 &gt; 198.51.100.15.22: UDP, length 0 14:57:41.403099 IP 198.51.100.2.60184 &gt; 198.51.100.15.22: UDP, length 0 14:57:41.603431 IP 198.51.100.2.60185 &gt; 198.51.100.15.22: UDP, length 0 14:57:41.803885 IP 198.51.100.2.60186 &gt; 198.51.100.15.22: UDP, length 0<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u30b9\u30ad\u30e3\u30f3\u3055\u308c\u305f\u30dd\u30fc\u30c8\u306e\u3046\u3061\u3001&#8221;closed&#8221; \u3068\u30de\u30fc\u30af\u3055\u308c\u305f\u7d50\u679c\u3068\u6bd4\u8f03\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">sudo<\/span> tcpdump <span class=\"token parameter variable\">-nn<\/span> <span class=\"token parameter variable\">-Q<\/span> out <span class=\"token parameter variable\">-r<\/span> ~\/scan_results\/udp_scan\/packets <span class=\"token string\">&#8216;udp and port 53&#8217;<\/span><\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div class=\"secondary-code-label\" title=\"Output\">Output<\/div>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>reading from file \/home\/user\/scan_results\/udp_scan\/packets, link-type EN10MB (Ethernet) 13:37:24.219270 IP 198.51.100.2.60181 &gt; 198.51.100.15.53: 0 stat [0q] (12)<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u3053\u306e\u3088\u3046\u306a\u65b9\u6cd5\u3067\u3001\u6700\u521d\u306bUDP\u30d1\u30b1\u30c3\u30c8\u3092\u9001\u4fe1\u3059\u308b\u5168\u30dd\u30fc\u30c8\u306e\u30ea\u30b9\u30c8\u3092\u4f5c\u6210\u3057\u3001nmap\u304c\u7d4c\u904e\u3059\u308b\u30d7\u30ed\u30bb\u30b9\u3092\u624b\u52d5\u3067\u518d\u69cb\u7bc9\u3057\u3066\u307f\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">sudo<\/span> tcpdump <span class=\"token parameter variable\">-nn<\/span> <span class=\"token parameter variable\">-Q<\/span> out <span class=\"token parameter variable\">-r<\/span> ~\/scan_results\/udp_scan\/packets <span class=\"token string\">&#8220;udp&#8221;<\/span> <span class=\"token operator\">|<\/span> <span class=\"token function\">awk<\/span> <span class=\"token string\">&#8216;{print $5;}&#8217;<\/span> <span class=\"token operator\">|<\/span> <span class=\"token function\">awk<\/span> <span class=\"token string\">&#8216;BEGIN { FS = &#8220;.&#8221; } ; { print $5 +0}&#8217;<\/span> <span class=\"token operator\">|<\/span> <span class=\"token function\">sort<\/span> <span class=\"token parameter variable\">-u<\/span> <span class=\"token operator\">|<\/span> <span class=\"token function\">tee<\/span> outgoing<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u305d\u306e\u5f8c\u3001\u79c1\u305f\u3061\u304c\u53d7\u4fe1\u3057\u305fICMP\u30d1\u30b1\u30c3\u30c8\u3067\u30dd\u30fc\u30c8\u304c\u5230\u9054\u3067\u304d\u306a\u304b\u3063\u305f\u3068\u3044\u3046\u8fd4\u7b54\u3092\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">sudo<\/span> tcpdump <span class=\"token parameter variable\">-nn<\/span> <span class=\"token parameter variable\">-Q<\/span> <span class=\"token keyword\">in<\/span> <span class=\"token parameter variable\">-r<\/span> ~\/scan_results\/udp_scan\/packets <span class=\"token string\">&#8220;icmp&#8221;<\/span> <span class=\"token operator\">|<\/span> <span class=\"token function\">awk<\/span> <span class=\"token string\">&#8216;{print $10,$11}&#8217;<\/span> <span class=\"token operator\">|<\/span> <span class=\"token function\">grep<\/span> unreachable <span class=\"token operator\">|<\/span> <span class=\"token function\">awk<\/span> <span class=\"token string\">&#8216;{print $1}&#8217;<\/span> <span class=\"token operator\">|<\/span> <span class=\"token function\">sort<\/span> <span class=\"token parameter variable\">-u<\/span> <span class=\"token operator\">|<\/span> <span class=\"token function\">tee<\/span> response<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u305d\u308c\u304b\u3089\u3001\u3053\u308c\u3089\u306e2\u3064\u306e\u5fdc\u7b54\u3092\u53d6\u308a\u4e0a\u3052\u3001ICMP\u5fdc\u7b54\u304c\u8fd4\u3063\u3066\u3053\u306a\u304b\u3063\u305fUDP\u30d1\u30b1\u30c3\u30c8\u3092\u898b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">comm<\/span> <span class=\"token parameter variable\">-3<\/span> outgoing response<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u3053\u308c\u306f\u4e3b\u306bnmap\u304c\u5831\u544a\u3057\u305f\u30dd\u30fc\u30c8\u30ea\u30b9\u30c8\u306b\u4e00\u81f4\u3059\u308b\u306f\u305a\u3067\u3059\uff08\u4e00\u90e8\u3001\u8fd4\u9001\u30d1\u30b1\u30c3\u30c8\u304c\u5931\u308f\u308c\u305f\u305f\u3081\u306b\u8aa4\u691c\u77e5\u304c\u542b\u307e\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\uff09\u3002<\/p>\n<h2>\u30db\u30b9\u30c8\u3068\u30b5\u30fc\u30d3\u30b9\u306e\u767a\u898b<\/h2>\n<p>\u53ef\u80fd\u3067\u3042\u308c\u3070\u3001nmap\u304c\u5b9f\u884c\u4e2d\u306e\u30aa\u30da\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u3084\u30b5\u30fc\u30d3\u30b9\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u7279\u5b9a\u3067\u304d\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306b\u3001\u5bfe\u8c61\u306b\u3044\u304f\u3064\u304b\u306e\u8ffd\u52a0\u30c6\u30b9\u30c8\u3092\u5b9f\u884c\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002\u30d0\u30fc\u30b8\u30e7\u30f3\u306e\u7d50\u679c\u3092\u4fdd\u6301\u3059\u308b\u305f\u3081\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u4f5c\u6210\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">mkdir<\/span> ~\/scan_results\/versions<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<h3>\u30b5\u30fc\u30d0\u30fc\u4e0a\u306e\u30b5\u30fc\u30d3\u30b9\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u767a\u898b\u3059\u308b<\/h3>\n<p>\u30bf\u30fc\u30b2\u30c3\u30c8\u4e0a\u3067\u5b9f\u884c\u3055\u308c\u3066\u3044\u308b\u30b5\u30fc\u30d3\u30b9\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u63a8\u6e2c\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306f\u300c\u30d5\u30a3\u30f3\u30ac\u30fc\u30d7\u30ea\u30f3\u30c8\u300d\u3068\u3057\u3066\u77e5\u3089\u308c\u308b\u30d7\u30ed\u30bb\u30b9\u306b\u3088\u3063\u3066\u884c\u308f\u308c\u307e\u3059\u3002\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u60c5\u5831\u3092\u53d6\u5f97\u3057\u3001\u305d\u308c\u3092\u79c1\u305f\u3061\u306e\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u5185\u306e\u65e2\u77e5\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3068\u6bd4\u8f03\u3057\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u30b7\u30ca\u30ea\u30aa\u3067\u306f\u3001tcpdump\u306f\u3042\u307e\u308a\u5f79\u306b\u7acb\u305f\u306a\u3044\u306e\u3067\u3001\u30b9\u30ad\u30c3\u30d7\u3057\u3066\u3082\u69cb\u3044\u307e\u305b\u3093\u3002\u305d\u308c\u306b\u3082\u95a2\u308f\u3089\u305a\u3001\u30ad\u30e3\u30d7\u30c1\u30e3\u30fc\u3057\u305f\u3044\u5834\u5408\u306f\u3001\u524d\u56de\u3068\u540c\u3058\u30d7\u30ed\u30bb\u30b9\u306b\u5f93\u3063\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u5fc5\u8981\u306anmap\u30b9\u30ad\u30e3\u30f3\u3092\u5b9f\u884c\u3059\u308b\u306b\u306f\u3001-sV\u30d5\u30e9\u30b0\u3092\u30c8\u30ea\u30ac\u30fc\u3068\u3057\u307e\u3059\u3002SYN\u30b9\u30ad\u30e3\u30f3\u3068UDP\u30b9\u30ad\u30e3\u30f3\u3092\u65e2\u306b\u5b9f\u884c\u3057\u305f\u305f\u3081\u3001\u6ce8\u76ee\u3059\u308b\u5fc5\u8981\u306e\u3042\u308b\u6b63\u78ba\u306a\u30dd\u30fc\u30c8\u3092-p\u30d5\u30e9\u30b0\u3067\u6307\u5b9a\u3067\u304d\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u300122\u756a\u306880\u756a\u306e\u30dd\u30fc\u30c8\u3092\u898b\u3066\u307f\u307e\u3059(SYN\u30b9\u30ad\u30e3\u30f3\u3067\u8868\u793a\u3055\u308c\u305f\u30dd\u30fc\u30c8\u3067\u3059)\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">sudo<\/span> nmap <span class=\"token parameter variable\">-sV<\/span> <span class=\"token parameter variable\">-Pn<\/span> <span class=\"token parameter variable\">-p<\/span> <span class=\"token number\">22,80<\/span> <span class=\"token parameter variable\">-vv<\/span> <span class=\"token parameter variable\">&#8211;reason<\/span> <span class=\"token parameter variable\">-oN<\/span> ~\/scan_results\/versions\/service_versions.nmap <mark>target_ip_addr<\/mark><\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>If you check the generated file, you might obtain details about the running service depending on the level of communication in the service&#8217;s response.<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">less<\/span> ~\/scan_results\/versions\/service_versions.nmap<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div>\u4ee5\u4e0b\u306e\u5185\u5bb9\u3092\u65e5\u672c\u8a9e\u3067\u8a00\u3044\u63db\u3048\u3066\u304f\u3060\u3055\u3044\uff081\u3064\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u307f\uff09\uff1a<br \/>\n~\/scan_results\/versions\/service_versions.nmap\u300c~\/scan_results\/versions\/service_versions.nmap\u300d<\/p>\n<\/div>\n<pre class=\"post-pre\"><code># Nmap 6.49BETA4 scan initiated Mon Dec 19 15:46:12 2022 as: nmap -sV -Pn -p 22,80 -vv --reason -oN \/home\/user\/scan_results\/versions\/service_versions.nmap 198.51.100.15\r\nNmap scan report for 198.51.100.15\r\nHost is up, received user-set (0.0011s latency).\r\nScanned at 2022-12-19 15:46:13 EDT for 8s\r\nPORT   STATE SERVICE REASON         VERSION\r\n22\/tcp open  ssh     syn-ack ttl 63 <mark>OpenSSH 6.6.1p1 Ubuntu 2ubuntu2 (Ubuntu Linux; protocol 2.0)<\/mark>\r\n80\/tcp open  http    syn-ack ttl 63 <mark>nginx 1.4.6 (Ubuntu)<\/mark>\r\nService Info: OS: Linux; CPE: cpe:\/o:linux:linux_kernel\r\n\r\nRead data files from: \/usr\/local\/bin\/..\/share\/nmap\r\nService detection performed. Please report any incorrect results at https:\/\/nmap.org\/submit\/ .\r\n# Nmap done at Mon Dec 19 15:46:21 2022 -- 1 IP address (1 host up) scanned in 8.81 seconds\r\n<\/code><\/pre>\n<p>\u3053\u3061\u3089\u3067\u306f\u3001\u30c6\u30b9\u30c8\u304cSSH\u30b5\u30fc\u30d0\u30fc\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3084\u305d\u308c\u306b\u30d1\u30c3\u30b1\u30fc\u30b8\u5316\u3055\u308c\u305fLinux\u30c7\u30a3\u30b9\u30c8\u30ea\u30d3\u30e5\u30fc\u30b7\u30e7\u30f3\u3001\u307e\u305fSSH\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u7279\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\u3002\u307e\u305f\u3001Nginx\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3082\u8a8d\u8b58\u3057\u3001Ubuntu\u30d1\u30c3\u30b1\u30fc\u30b8\u3068\u4e00\u81f4\u3059\u308b\u3053\u3068\u3082\u5224\u660e\u3057\u307e\u3057\u305f\u3002<\/p>\n<h3>\u30db\u30b9\u30c8\u30aa\u30da\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u3092\u767a\u898b\u3059\u308b<\/h3>\n<p>\u6b21\u306e\u3088\u3046\u306b\u65e5\u672c\u8a9e\u3067\u8a00\u3044\u63db\u3048\u307e\u3059\uff1a<br \/>\n\u30db\u30b9\u30c8\u306e\u30aa\u30da\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u3092nmap\u306b\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306e\u7279\u5fb4\u3068\u5fdc\u7b54\u306b\u57fa\u3065\u3044\u3066\u63a8\u6e2c\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306f\u30b5\u30fc\u30d3\u30b9\u30d0\u30fc\u30b8\u30e7\u30f3\u8b58\u5225\u3068\u540c\u3058\u65b9\u6cd5\u3067\u6a5f\u80fd\u3057\u307e\u3059\u3002\u3082\u3046\u4e00\u5ea6\u8a00\u3044\u307e\u3059\u304c\u3001\u3053\u306e\u30c6\u30b9\u30c8\u3067\u306ftcpdump\u306e\u5b9f\u884c\u306f\u7701\u7565\u3057\u307e\u3059\u304c\u3001\u304a\u597d\u307f\u3067\u5b9f\u884c\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>To detect the operating system, you should use the flag -O in your command. The letter &#8220;O&#8221; should be capitalized. A complete command example could be:<br \/>\n\u300c\u30aa\u30da\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u306e\u691c\u51fa\u306b\u306f\u3001\u30d5\u30e9\u30b0\u3068\u3057\u3066-O\uff08\u5927\u6587\u5b57\u306e\u300cO\u300d\uff09\u3092\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u4e0b\u8a18\u306f\u5b8c\u5168\u306a\u30b3\u30de\u30f3\u30c9\u306e\u4e00\u4f8b\u3067\u3059\u3002\u300d<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">sudo<\/span> nmap <span class=\"token parameter variable\">-O<\/span> <span class=\"token parameter variable\">-Pn<\/span> <span class=\"token parameter variable\">-vv<\/span> <span class=\"token parameter variable\">&#8211;reason<\/span> <span class=\"token parameter variable\">-oN<\/span> ~\/scan_results\/versions\/os_version.nmap <mark>target_ip_addr<\/mark><\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>\u51fa\u529b\u30d5\u30a1\u30a4\u30eb\u3092\u8868\u793a\u3059\u308b\u3068\u3001\u3053\u3093\u306a\u611f\u3058\u306e\u3082\u306e\u304c\u898b\u3048\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<ol>\n<li data-prefix=\"$\"><span class=\"token function\">less<\/span> ~\/scan_results\/versions\/os_version.nmap<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code><\/code><\/pre>\n<div>\u300c~\/scan_results\/versions\/os_versions.nmap\u300d\u3068\u3044\u3046\u30d1\u30b9\u306b\u3042\u308b\u30d5\u30a1\u30a4\u30eb\u306e\u7d50\u679c\u3092\u30b9\u30ad\u30e3\u30f3\u3057\u307e\u3059\u3002<\/div>\n<pre class=\"post-pre\"><code># Nmap 6.49BETA4 scan initiated Mon Dec 19 15:53:54 2022 as: nmap -O -Pn -vv --reason -oN \/home\/user\/scan_results\/versions\/os_version.nmap 198.51.100.15\r\nIncreasing send delay for 198.51.100.15 from 0 to 5 due to 65 out of 215 dropped probes since last increase.\r\nIncreasing send delay for 198.51.100.15 from 5 to 10 due to 11 out of 36 dropped probes since last increase.\r\nIncreasing send delay for 198.51.100.15 from 10 to 20 due to 11 out of 35 dropped probes since last increase.\r\nIncreasing send delay for 198.51.100.15 from 20 to 40 due to 11 out of 29 dropped probes since last increase.\r\nIncreasing send delay for 198.51.100.15 from 40 to 80 due to 11 out of 31 dropped probes since last increase.\r\nNmap scan report for 198.51.100.15\r\nHost is up, received user-set (0.0012s latency).\r\nScanned at 2022-12-19 15:53:54 EDT for 30s\r\nNot shown: 998 closed ports\r\nReason: 998 resets\r\nPORT   STATE SERVICE REASON\r\n22\/tcp open  ssh     syn-ack ttl 63\r\n80\/tcp open  http    syn-ack ttl 63\r\nNo exact OS matches for host (If you know what OS is running on it, see https:\/\/nmap.org\/submit\/ ).\r\nTCP\/IP fingerprint:\r\nOS:SCAN(V=6.49BETA4%E=4%D=8\/27%OT=22%CT=1%CU=40800%PV=N%DS=2%DC=I%G=Y%TM=55\r\nOS:DF6AF0%P=x86_64-unknown-linux-gnu)SEQ(SP=F5%GCD=1%ISR=106%TI=Z%CI=Z%TS=8\r\nOS:)OPS(O1=M5B4ST11NW8%O2=M5B4ST11NW8%O3=M5B4NNT11NW8%O4=M5B4ST11NW8%O5=M5B\r\nOS:4ST11NW8%O6=M5B4ST11)WIN(W1=7120%W2=7120%W3=7120%W4=7120%W5=7120%W6=7120\r\nOS:)ECN(R=Y%DF=Y%T=40%W=7210%O=M5B4NNSNW8%CC=Y%Q=)T1(R=Y%DF=Y%T=40%S=O%A=S+\r\nOS:%F=AS%RD=0%Q=)T2(R=N)T3(R=N)T4(R=Y%DF=Y%T=40%W=0%S=A%A=Z%F=R%O=%RD=0%Q=)\r\nOS:T5(R=Y%DF=Y%T=40%W=0%S=Z%A=S+%F=AR%O=%RD=0%Q=)T6(R=Y%DF=Y%T=40%W=0%S=A%A\r\nOS:=Z%F=R%O=%RD=0%Q=)T7(R=N)U1(R=Y%DF=N%T=40%IPL=164%UN=0%RIPL=G%RID=G%RIPC\r\nOS:K=G%RUCK=G%RUD=G)U1(R=N)IE(R=N)\r\n\r\nUptime guess: 1.057 days (since Mon Dec 12 14:32:23 2022)\r\nNetwork Distance: 2 hops\r\nTCP Sequence Prediction: Difficulty=245 (Good luck!)\r\nIP ID Sequence Generation: All zeros\r\n\r\nRead data files from: \/usr\/local\/bin\/..\/share\/nmap\r\nOS detection performed. Please report any incorrect results at https:\/\/nmap.org\/submit\/ .\r\n# Nmap done at Mon Dec 12 15:54:24 2022 -- 1 IP address (1 host up) scanned in 30.94 seconds\r\n<\/code><\/pre>\n<p>\u3053\u306e\u5834\u5408\u3001Nmap\u306f\u3001\u898b\u305f\u30b7\u30b0\u30cd\u30c1\u30e3\u306b\u57fa\u3065\u3044\u3066\u30aa\u30da\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u306b\u95a2\u3059\u308b\u63a8\u6e2c\u3092\u6301\u3063\u3066\u3044\u306a\u3044\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002\u3088\u308a\u591a\u304f\u306e\u60c5\u5831\u3092\u53d7\u3051\u53d6\u3063\u305f\u5834\u5408\u3001Nmap\u306f\u304a\u305d\u3089\u304f\u3001\u30bf\u30fc\u30b2\u30c3\u30c8\u30de\u30b7\u30f3\u306e\u30b7\u30b0\u30cd\u30c1\u30e3\u304c\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u5185\u306e\u30aa\u30da\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u306e\u30b7\u30b0\u30cd\u30c1\u30e3\u3068\u3069\u306e\u7a0b\u5ea6\u4e00\u81f4\u3059\u308b\u304b\u3092\u793a\u3059\u3055\u307e\u3056\u307e\u306a\u30d1\u30fc\u30bb\u30f3\u30c6\u30fc\u30b8\u304c\u8868\u793a\u3055\u308c\u308b\u3067\u3057\u3087\u3046\u3002\u30bf\u30fc\u30b2\u30c3\u30c8\u304b\u3089Nmap\u304c\u53d7\u3051\u53d6\u3063\u305f\u30d5\u30a3\u30f3\u30ac\u30fc\u30d7\u30ea\u30f3\u30c8\u30b7\u30b0\u30cd\u30c1\u30e3\u306f\u3001TCP\/IP\u30d5\u30a3\u30f3\u30ac\u30fc\u30d7\u30ea\u30f3\u30c8\u306e\u4e0b\u306b\u8868\u793a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u30aa\u30da\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u306e\u8b58\u5225\u306f\u3001\u653b\u6483\u8005\u304c\u30b7\u30b9\u30c6\u30e0\u4e0a\u3067\u5f79\u7acb\u3064\u53ef\u80fd\u6027\u306e\u3042\u308b\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u3092\u7279\u5b9a\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u8a2d\u5b9a\u3092\u5909\u66f4\u3057\u3066\u3001\u554f\u3044\u5408\u308f\u305b\u306b\u5bfe\u3059\u308b\u5fdc\u7b54\u3092\u6e1b\u3089\u3059\u3053\u3068\u3067\u3001\u3053\u308c\u3089\u306e\u691c\u77e5\u65b9\u6cd5\u306e\u6b63\u78ba\u6027\u3092\u59a8\u5bb3\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2>\u7d50\u8ad6<\/h2>\n<p>\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u30c6\u30b9\u30c8\u3084\u5185\u90e8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304c\u5916\u90e8\u653b\u6483\u8005\u306b\u3069\u306e\u3088\u3046\u306b\u898b\u3048\u308b\u304b\u3092\u628a\u63e1\u3059\u308b\u3053\u3068\u306f\u3001\u30ea\u30b9\u30af\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002\u81ea\u793e\u30a4\u30f3\u30d5\u30e9\u306e\u8abf\u67fb\u304b\u3089\u5f97\u3089\u308c\u308b\u60c5\u5831\u306f\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u5411\u4e0a\u3055\u305b\u308b\u305f\u3081\u306b\u653f\u7b56\u306e\u898b\u76f4\u3057\u304c\u5fc5\u8981\u304b\u3069\u3046\u304b\u306e\u8b70\u8ad6\u306e\u304d\u3063\u304b\u3051\u3092\u4f5c\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u307e\u305f\u3001\u8aa4\u3063\u305f\u30eb\u30fc\u30eb\u306e\u9806\u5e8f\u3084\u30c6\u30b9\u30c8\u30dd\u30ea\u30b7\u30fc\u306e\u5fd8\u308c\u304c\u539f\u56e0\u3067\u767a\u751f\u3057\u305f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u30ae\u30e3\u30c3\u30d7\u304c\u660e\u3089\u304b\u306b\u306a\u308b\u3067\u3057\u3087\u3046\u3002\u6700\u65b0\u306e\u30b9\u30ad\u30e3\u30f3\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3092\u4f7f\u7528\u3057\u3066\u5b9a\u671f\u7684\u306b\u30dd\u30ea\u30b7\u30fc\u3092\u30c6\u30b9\u30c8\u3059\u308b\u3053\u3068\u306f\u3001\u73fe\u5728\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30ec\u30d9\u30eb\u3092\u6539\u5584\u307e\u305f\u306f\u7dad\u6301\u3059\u308b\u305f\u3081\u306b\u63a8\u5968\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u65b9\u91dd\u6539\u5584\u306e\u30a2\u30a4\u30c7\u30a2\u3092\u5f97\u308b\u305f\u3081\u306b\u3001\u3053\u306e\u30ac\u30a4\u30c9\u3092\u53c2\u8003\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7d39\u4ecb \u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u30fc\u306e\u305f\u3081\u306b\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u306f\u3001\u30b5\u30fc\u30d3\u30b9\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u78ba\u4fdd\u3059\u308b\u7d20\u6674\u3089\u3057\u3044\u65b9\u6cd5\u3067\u3059\u3002\u8a2d\u5b9a\u30dd\u30ea\u30b7\u30fc\u304c\u5b8c\u6210\u3057\u305f\u3089\u3001\u6b21\u306e\u30b9\u30c6\u30c3\u30d7\u306f\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u30eb\u30fc\u30eb\u3092\u30c6\u30b9\u30c8\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9 [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[69,62,16,26,61],"class_list":["post-24","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-nmaptcpdump","tag-62","tag-16","tag-26","tag-61"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Nmap\u3068Tcpdump\u3092\u4f7f\u7528\u3057\u3066\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u8a2d\u5b9a\u3092\u30c6\u30b9\u30c8\u3059\u308b\u65b9\u6cd5 - \u5b9f\u8df5\u30ac\u30a4\u30c9 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" 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