{"id":16916,"date":"2025-09-28T10:34:41","date_gmt":"2025-09-28T07:04:41","guid":{"rendered":"https:\/\/www.itpiran.net\/blog\/?p=16916"},"modified":"2025-09-28T10:34:41","modified_gmt":"2025-09-28T07:04:41","slug":"what-is-windows-firewall-and-what-is-its-use","status":"publish","type":"post","link":"https:\/\/www.itpiran.net\/blog\/ja\/tutorials\/what-is-windows-firewall-and-what-is-its-use\/","title":{"rendered":"Windows \u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3068\u305d\u306e\u7528\u9014\u306f\u4f55\u3067\u3059\u304b?"},"content":{"rendered":"<h1 id=\"%d9%81%d8%a7%db%8c%d8%b1%d9%88%d8%a7%d9%84-%d9%88%db%8c%d9%86%d8%af%d9%88%d8%b2-%da%86%db%8c%d8%b3%d8%aa-%d9%88-%da%86%d9%87-%da%a9%d8%a7%d8%b1%d8%a8%d8%b1%d8%af%db%8c-%d8%af%d8%a7%d8%b1%d8%af%d8%9f\">Windows \u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3068\u305d\u306e\u7528\u9014\u306f\u4f55\u3067\u3059\u304b?<\/h1>\n<p data-start=\"297\" data-end=\"578\">Windows Defender\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306f\u3001Windows\u30aa\u30da\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u306e\u6700\u3082\u91cd\u8981\u306a\u7d44\u307f\u8fbc\u307f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30c4\u30fc\u30eb\u306e1\u3064\u3067\u3042\u308a\u3001\u305d\u306e\u4e3b\u306a\u5f79\u5272\u306f\u3001 <strong data-start=\"417\" data-end=\"452\">\u53d7\u4fe1\u304a\u3088\u3073\u9001\u4fe1\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u5236\u5fa1\u3059\u308b<\/strong> \u3053\u306e\u30c4\u30fc\u30eb\u306f Windows XP \u3067\u5c0e\u5165\u3055\u308c\u3001\u65b0\u3057\u3044\u30d0\u30fc\u30b8\u30e7\u30f3\u306e Windows \u3067\u306f\u3088\u308a\u9ad8\u5ea6\u306a\u5f62\u5f0f\u3067\u5229\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002.<\/p>\n<p data-start=\"580\" data-end=\"722\">\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306f\u4fb5\u5165\u3084\u30b5\u30a4\u30d0\u30fc\u653b\u6483\u3092\u9632\u3050\u4e0a\u3067\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u3066\u3044\u308b\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u3001\u591a\u304f\u306e\u30e6\u30fc\u30b6\u30fc\u306f\u305d\u308c\u3092\u7121\u8996\u3057\u305f\u308a\u3001\u7121\u52b9\u306b\u3057\u305f\u308a\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n<hr \/>\n<h2 id=\"%d9%81%d8%a7%db%8c%d8%b1%d9%88%d8%a7%d9%84-%da%86%d9%87-%da%a9%d8%a7%d8%b1%db%8c-%d8%a7%d9%86%d8%ac%d8%a7%d9%85-%d9%85%db%8c%d8%af%d9%87%d8%af%d8%9f\" data-start=\"729\" data-end=\"761\">\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306f\u4f55\u3092\u3059\u308b\u306e\u3067\u3059\u304b?<\/h2>\n<p data-start=\"763\" data-end=\"818\">Windows\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306f <strong data-start=\"787\" data-end=\"804\">\u30b2\u30fc\u30c8\u30ad\u30fc\u30d1\u30fc<\/strong> \u305d\u308c\u306f\u52d5\u4f5c\u3057\u307e\u3059\uff1a<\/p>\n<ul data-start=\"819\" data-end=\"987\">\n<li data-start=\"819\" data-end=\"889\">\n<p data-start=\"821\" data-end=\"889\">\u3059\u3079\u3066\u306e\u7740\u4fe1\u307e\u305f\u306f\u767a\u4fe1\u63a5\u7d9a\uff08\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u307e\u305f\u306f\u30ed\u30fc\u30ab\u30eb \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304b\u3089\uff09\u3092\u30c1\u30a7\u30c3\u30af\u3057\u307e\u3059\u3002.<\/p>\n<\/li>\n<li data-start=\"890\" data-end=\"987\">\n<p data-start=\"892\" data-end=\"987\">\u7279\u5b9a\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30eb\u30fc\u30eb\u306b\u57fa\u3065\u3044\u3066\u3001\u305d\u306e\u63a5\u7d9a\u304c <strong data-start=\"946\" data-end=\"984\">\u901a\u904e\u3092\u8a31\u53ef\u3055\u308c\u308b\u304b\u3001\u963b\u6b62\u3055\u308c\u308b\u304b<\/strong>.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"989\" data-end=\"1099\">\u3064\u307e\u308a\u3001\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306f <strong data-start=\"1029\" data-end=\"1099\">\u6b63\u5e38\u306a\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u901a\u904e\u3055\u305b\u3001\u7591\u308f\u3057\u3044\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3084\u4e0d\u8981\u306a\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u963b\u6b62\u3057\u307e\u3059\u3002.<\/strong><\/p>\n<hr \/>\n<h2 id=\"%d9%85%d9%87%d9%85%d8%aa%d8%b1%db%8c%d9%86-%d9%82%d8%a7%d8%a8%d9%84%db%8c%d8%aa%d9%87%d8%a7%db%8c-%d9%81%d8%a7%db%8c%d8%b1%d9%88%d8%a7%d9%84-%d9%88%db%8c%d9%86%d8%af%d9%88%d8%b2\" data-start=\"1106\" data-end=\"1143\">Windows\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u6700\u3082\u91cd\u8981\u306a\u6a5f\u80fd<\/h2>\n<ol data-start=\"1145\" data-end=\"2120\">\n<li data-start=\"1145\" data-end=\"1348\">\n<p data-start=\"1148\" data-end=\"1348\"><strong data-start=\"1148\" data-end=\"1187\">\u53d7\u4fe1\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u5236\u5fa1\uff08\u53d7\u4fe1\u30eb\u30fc\u30eb\uff09:<\/strong><br data-start=\"1187\" data-end=\"1190\" \/>\u30b7\u30b9\u30c6\u30e0\u3078\u306e\u30a2\u30af\u30bb\u30b9\u3092\u8a31\u53ef\u3059\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u3084\u30dd\u30fc\u30c8\u3092\u6307\u5b9a\u3067\u304d\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001RDP\u30dd\u30fc\u30c8\uff083389\uff09\u3092\u7279\u5b9a\u306eIP\u30a2\u30c9\u30ec\u30b9\u306b\u5bfe\u3057\u3066\u306e\u307f\u958b\u653e\u3057\u3066\u304a\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002.<\/p>\n<\/li>\n<li data-start=\"1350\" data-end=\"1546\">\n<p data-start=\"1353\" data-end=\"1546\"><strong data-start=\"1353\" data-end=\"1393\">\u9001\u4fe1\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u5236\u5fa1\uff08\u9001\u4fe1\u30eb\u30fc\u30eb\uff09:<\/strong><br data-start=\"1393\" data-end=\"1396\" \/>\u5165\u529b\u306b\u52a0\u3048\u3066\u3001\u3069\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u304c\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306b\u30c7\u30fc\u30bf\u3092\u9001\u4fe1\u3067\u304d\u308b\u304b\u3092\u5236\u5fa1\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u6a5f\u80fd\u306f\u3001\u30de\u30eb\u30a6\u30a7\u30a2\u306b\u3088\u308b\u60c5\u5831\u9001\u4fe1\u3092\u9632\u3050\u305f\u3081\u306b\u975e\u5e38\u306b\u91cd\u8981\u3067\u3059\u3002.<\/p>\n<\/li>\n<li data-start=\"1548\" data-end=\"1802\">\n<p data-start=\"1551\" data-end=\"1650\"><strong data-start=\"1551\" data-end=\"1578\">\u7570\u306a\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30d7\u30ed\u30d5\u30a1\u30a4\u30eb:<\/strong><br data-start=\"1578\" data-end=\"1581\" \/>Windows \u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u7a2e\u985e\u306b\u5fdc\u3058\u3066\u7570\u306a\u308b\u30dd\u30ea\u30b7\u30fc\u3092\u9069\u7528\u3057\u307e\u3059\u3002<\/p>\n<ul data-start=\"1654\" data-end=\"1802\">\n<li data-start=\"1654\" data-end=\"1692\">\n<p data-start=\"1656\" data-end=\"1692\"><strong data-start=\"1656\" data-end=\"1667\">\u30c9\u30e1\u30a4\u30f3\uff1a<\/strong> \u30a8\u30f3\u30bf\u30fc\u30d7\u30e9\u30a4\u30ba \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5411\u3051\u3002.<\/p>\n<\/li>\n<li data-start=\"1696\" data-end=\"1739\">\n<p data-start=\"1698\" data-end=\"1739\"><strong data-start=\"1698\" data-end=\"1710\">\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\uff1a<\/strong> \u5bb6\u5ead\u3084\u5b89\u5168\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5411\u3051\u3002.<\/p>\n<\/li>\n<li data-start=\"1743\" data-end=\"1802\">\n<p data-start=\"1745\" data-end=\"1802\"><strong data-start=\"1745\" data-end=\"1756\">\u516c\u5171\uff1a<\/strong> \u30d1\u30d6\u30ea\u30c3\u30af\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\uff08\u30b3\u30fc\u30d2\u30fc\u30b7\u30e7\u30c3\u30d7\u306e Wi-Fi \u306a\u3069\uff09\u7528\u3002.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li data-start=\"1804\" data-end=\"1942\">\n<p data-start=\"1807\" data-end=\"1942\"><strong data-start=\"1807\" data-end=\"1842\">Windows Defender \u3068\u306e\u7d71\u5408\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3:<\/strong><br data-start=\"1842\" data-end=\"1845\" \/>Windows \u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306f Windows Defender \u30a6\u30a4\u30eb\u30b9\u5bfe\u7b56\u3068\u9023\u643a\u3057\u3066\u52d5\u4f5c\u3057\u3001\u5b8c\u5168\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5c64\u3092\u69cb\u7bc9\u3057\u307e\u3059\u3002.<\/p>\n<\/li>\n<li data-start=\"1944\" data-end=\"2120\">\n<p data-start=\"1947\" data-end=\"2120\"><strong data-start=\"1947\" data-end=\"1979\">\u624b\u52d5\u307e\u305f\u306f\u9ad8\u5ea6\u306a\u8abf\u6574\u304c\u53ef\u80fd:<\/strong><br data-start=\"1979\" data-end=\"1982\" \/>\u90e8\u9580\u3092\u901a\u3058\u3066 <strong data-start=\"1997\" data-end=\"2049\">\u9ad8\u5ea6\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u5099\u3048\u305f Windows Defender \u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb<\/strong> \u7279\u5b9a\u306e\u30eb\u30fc\u30eb\u3092\u5b9a\u7fa9\u3057\u3001\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u6b63\u78ba\u306b\u5236\u5fa1\u3067\u304d\u307e\u3059\u3002.<\/p>\n<\/li>\n<\/ol>\n<hr \/>\n<h2 id=\"%da%86%d8%b1%d8%a7-%d9%81%d8%a7%db%8c%d8%b1%d9%88%d8%a7%d9%84-%d9%88%db%8c%d9%86%d8%af%d9%88%d8%b2-%d9%85%d9%87%d9%85-%d8%a7%d8%b3%d8%aa%d8%9f\" data-start=\"2127\" data-end=\"2157\">Windows \u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306f\u306a\u305c\u91cd\u8981\u3067\u3059\u304b?<\/h2>\n<ul data-start=\"2159\" data-end=\"2404\">\n<li data-start=\"2159\" data-end=\"2221\">\n<p data-start=\"2161\" data-end=\"2221\">RDP \u3084 SMB \u306a\u3069\u306e\u6a5f\u5bc6\u30dd\u30fc\u30c8\u3078\u306e\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u3092\u9632\u6b62\u3057\u307e\u3059\u3002.<\/p>\n<\/li>\n<li data-start=\"2222\" data-end=\"2296\">\n<p data-start=\"2224\" data-end=\"2296\">\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306b\u63a5\u7d9a\u3059\u308b\u30de\u30eb\u30a6\u30a7\u30a2\u306b\u3088\u3063\u3066\u30b7\u30b9\u30c6\u30e0\u304c\u611f\u67d3\u3059\u308b\u53ef\u80fd\u6027\u3092\u4f4e\u6e1b\u3057\u307e\u3059\u3002.<\/p>\n<\/li>\n<li data-start=\"2297\" data-end=\"2343\">\n<p data-start=\"2299\" data-end=\"2343\">\u30d1\u30d6\u30ea\u30c3\u30af\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u4e0a\u306e\u500b\u4eba\u30c7\u30fc\u30bf\u306e\u4fdd\u8b77\u3002.<\/p>\n<\/li>\n<li data-start=\"2344\" data-end=\"2404\">\n<p data-start=\"2346\" data-end=\"2404\">\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u7ba1\u7406\u3092\u6539\u5584\u3057\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306e\u4e0d\u6b63\u4f7f\u7528\u3092\u9632\u6b62\u3057\u307e\u3059\u3002.<\/p>\n<\/li>\n<\/ul>\n<hr \/>\n<h2 id=\"%d9%85%d8%ad%d8%af%d9%88%d8%af%db%8c%d8%aa%d9%87%d8%a7-%d9%88-%d9%86%da%a9%d8%a7%d8%aa-%d8%aa%da%a9%d9%85%db%8c%d9%84%db%8c\" data-start=\"2411\" data-end=\"2438\">\u5236\u9650\u4e8b\u9805\u3068\u8ffd\u52a0\u4e8b\u9805<\/h2>\n<ul data-start=\"2440\" data-end=\"2796\">\n<li data-start=\"2440\" data-end=\"2587\">\n<p data-start=\"2442\" data-end=\"2587\">Windows\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306f\u307b\u3068\u3093\u3069\u306e\u30e6\u30fc\u30b6\u30fc\u306b\u3068\u3063\u3066\u5341\u5206\u3067\u3059\u304c\u3001\u4f01\u696d\u74b0\u5883\u3067\u306f <strong data-start=\"2521\" data-end=\"2574\">\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u307e\u305f\u306f\u9ad8\u5ea6\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2<\/strong> \u7d44\u307f\u5408\u308f\u305b\u308b\u3002.<\/p>\n<\/li>\n<li data-start=\"2588\" data-end=\"2674\">\n<p data-start=\"2590\" data-end=\"2674\">\u30eb\u30fc\u30eb\u3092\u8aa4\u3063\u3066\u8a2d\u5b9a\u3059\u308b\u3068\u3001\u63a5\u7d9a\u304c\u4e2d\u65ad\u3055\u308c\u305f\u308a\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u306a\u3044\u554f\u984c\u304c\u767a\u751f\u3057\u305f\u308a\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n<\/li>\n<li data-start=\"2675\" data-end=\"2796\">\n<p data-start=\"2677\" data-end=\"2796\">\u4e0a\u7d1a\u30e6\u30fc\u30b6\u30fc\u306f\u3001\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3068\u4f75\u305b\u3066\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u76e3\u8996\u30c4\u30fc\u30eb\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u53ef\u8996\u6027\u3092\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002.<\/p>\n<\/li>\n<\/ul>\n<hr \/>\n<h2 id=\"%d8%ac%d9%85%d8%b9%d8%a8%d9%86%d8%af%db%8c\" data-start=\"2803\" data-end=\"2814\">\u7d50\u8ad6<\/h2>\n<p data-start=\"2816\" data-end=\"2994\">Windows\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306f\u3001Windows\u306b\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u4ed8\u5c5e\u3059\u308b\u7121\u6599\u306e\u5f37\u529b\u306a\u30c4\u30fc\u30eb\u3067\u3059\u3002\u6b63\u3057\u304f\u8a2d\u5b9a\u3059\u308c\u3070\u3001\u591a\u304f\u306e\u653b\u6483\u3084\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u3092\u30d6\u30ed\u30c3\u30af\u3067\u304d\u307e\u3059\u3002.<\/p>\n<p 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