{"id":479404,"date":"2023-08-09T10:35:54","date_gmt":"2023-08-09T10:35:54","guid":{"rendered":""},"modified":"2023-09-05T11:18:46","modified_gmt":"2023-09-05T11:18:46","slug":"trivial-file-transfer-protocol","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/jp\/wiki\/trivial-file-transfer-protocol\/","title":{"rendered":"\u7c21\u5358\u306a\u30d5\u30a1\u30a4\u30eb\u8ee2\u9001\u30d7\u30ed\u30c8\u30b3\u30eb"},"content":{"rendered":"<h2>\u5c0e\u5165<\/h2>\n<p>TFTP (Trivial File Transfer Protocol) \u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30c7\u30d0\u30a4\u30b9\u9593\u3067\u30d5\u30a1\u30a4\u30eb\u3092\u8ee2\u9001\u3059\u308b\u305f\u3081\u306b\u3088\u304f\u4f7f\u7528\u3055\u308c\u308b\u3001\u30b7\u30f3\u30d7\u30eb\u3067\u8efd\u91cf\u306a\u30d5\u30a1\u30a4\u30eb\u8ee2\u9001\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3059\u30021980 \u5e74\u306b Noel Chiappa \u306b\u3088\u3063\u3066\u6700\u521d\u306b\u8a2d\u8a08\u3055\u308c\u3001\u305d\u306e\u5f8c 1981 \u5e74\u306b Internet Engineering Task Force (IETF) \u306b\u3088\u3063\u3066 RFC 783 \u3092\u901a\u3058\u3066\u6539\u826f\u3055\u308c\u307e\u3057\u305f\u3002TFTP \u306f\u3001\u57fa\u672c\u7684\u306a\u9ad8\u901f\u30d5\u30a1\u30a4\u30eb\u8ee2\u9001\u65b9\u6cd5\u304c\u6c42\u3081\u3089\u308c\u308b\u3055\u307e\u3056\u307e\u306a\u30b7\u30ca\u30ea\u30aa\u3067\u5e83\u304f\u4f7f\u7528\u3055\u308c\u3066\u304a\u308a\u3001\u591a\u304f\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u74b0\u5883\u3067\u4e0d\u53ef\u6b20\u306a\u30c4\u30fc\u30eb\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>\u6b74\u53f2\u3068\u8d77\u6e90<\/h2>\n<p>TFTP \u306e\u8d77\u6e90\u306f\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u521d\u671f\u306e\u9803\u306b\u9061\u308a\u307e\u3059\u3002Noel Chiappa \u306f\u3001\u3088\u308a\u8907\u96d1\u306a\u30d5\u30a1\u30a4\u30eb\u8ee2\u9001\u30d7\u30ed\u30c8\u30b3\u30eb (FTP) \u306b\u4ee3\u308f\u308b\u3001\u5b9f\u88c5\u304c\u5bb9\u6613\u306a\u30d7\u30ed\u30c8\u30b3\u30eb\u3068\u3057\u3066\u3053\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u521d\u3081\u3066\u5c0e\u5165\u3057\u307e\u3057\u305f\u3002TFTP \u306f\u30b7\u30f3\u30d7\u30eb\u3067\u52b9\u7387\u7684\u3067\u3042\u308b\u305f\u3081\u3001\u30ea\u30bd\u30fc\u30b9\u304c\u9650\u3089\u308c\u3066\u304a\u308a\u3001\u8fc5\u901f\u306a\u30d5\u30a1\u30a4\u30eb\u8ee2\u9001\u304c\u5fc5\u8981\u306a\u30b7\u30ca\u30ea\u30aa\u306b\u7279\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>TFTP \u306b\u95a2\u3059\u308b\u8a73\u7d30\u60c5\u5831<\/h2>\n<p>TFTP \u306f UDP (\u30e6\u30fc\u30b6\u30fc \u30c7\u30fc\u30bf\u30b0\u30e9\u30e0 \u30d7\u30ed\u30c8\u30b3\u30eb) \u4e0a\u3067\u52d5\u4f5c\u3057\u3001\u6700\u5c0f\u9650\u306e\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u3067\u30c7\u30fc\u30bf\u3092\u8ee2\u9001\u3067\u304d\u307e\u3059\u3002FTP \u3068\u306f\u7570\u306a\u308a\u3001TFTP \u306f\u30e6\u30fc\u30b6\u30fc\u8a8d\u8a3c\u3001\u30c7\u30a3\u30ec\u30af\u30c8\u30ea \u30ea\u30b9\u30c8\u3001\u307e\u305f\u306f\u8907\u96d1\u306a\u64cd\u4f5c\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u307e\u305b\u3093\u3002\u4ee3\u308f\u308a\u306b\u3001\u30d5\u30a1\u30a4\u30eb\u8ee2\u9001\u6a5f\u80fd\u306e\u307f\u306b\u7126\u70b9\u3092\u5f53\u3066\u3066\u3044\u307e\u3059\u3002\u6700\u5c0f\u9650\u306e\u8a2d\u8a08\u306e\u305f\u3081\u3001TFTP \u306b\u5fc5\u8981\u306a\u30b3\u30fc\u30c9\u3068\u30e1\u30e2\u30ea\u304c\u5c11\u306a\u304f\u3001\u30d6\u30fc\u30c8\u30b9\u30c8\u30e9\u30c3\u30d7 \u30d7\u30ed\u30bb\u30b9\u3001\u30d5\u30a1\u30fc\u30e0\u30a6\u30a7\u30a2\u306e\u66f4\u65b0\u3001\u304a\u3088\u3073\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30c7\u30d0\u30a4\u30b9\u306e\u69cb\u6210\u306b\u6700\u9069\u3067\u3059\u3002<\/p>\n<h2>TFTP \u306e\u5185\u90e8\u69cb\u9020\u3068\u52d5\u4f5c<\/h2>\n<p>TFTP \u306f\u30af\u30e9\u30a4\u30a2\u30f3\u30c8 \u30b5\u30fc\u30d0\u30fc \u30e2\u30c7\u30eb\u3067\u52d5\u4f5c\u3057\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306f\u30b5\u30fc\u30d0\u30fc\u306b\u30d5\u30a1\u30a4\u30eb\u3092\u8981\u6c42\u3057\u3066\u30d5\u30a1\u30a4\u30eb\u8ee2\u9001\u3092\u958b\u59cb\u3057\u307e\u3059\u3002\u30b5\u30fc\u30d0\u30fc\u306f\u3001\u8981\u6c42\u3055\u308c\u305f\u30d5\u30a1\u30a4\u30eb\u3092\u56fa\u5b9a\u30b5\u30a4\u30ba\u306e\u30d6\u30ed\u30c3\u30af (\u901a\u5e38 512 \u30d0\u30a4\u30c8) \u3067\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306b\u9001\u4fe1\u3057\u3066\u5fdc\u7b54\u3057\u307e\u3059\u3002\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306f\u5404\u30d6\u30ed\u30c3\u30af\u306e\u53d7\u4fe1\u3092\u78ba\u8a8d\u3057\u3001\u30d5\u30a1\u30a4\u30eb\u8ee2\u9001\u5168\u4f53\u304c\u5b8c\u4e86\u3059\u308b\u307e\u3067\u30b5\u30fc\u30d0\u30fc\u304c\u6b21\u306e\u30d6\u30ed\u30c3\u30af\u3092\u9001\u4fe1\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n<p>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3068\u30b5\u30fc\u30d0\u30fc\u9593\u306e\u901a\u4fe1\u306f\u3001\u4ea4\u63db\u3055\u308c\u308b\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u7a2e\u985e\u3092\u6307\u5b9a\u3059\u308b\u3001\u660e\u78ba\u306b\u5b9a\u7fa9\u3055\u308c\u305f TFTP \u30aa\u30da\u30b3\u30fc\u30c9\u3092\u901a\u3058\u3066\u884c\u308f\u308c\u307e\u3059\u3002\u4e3b\u8981\u306a\u30aa\u30da\u30b3\u30fc\u30c9\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<ul>\n<li>\u8aad\u307f\u53d6\u308a\u8981\u6c42 (RRQ): \u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u30b5\u30fc\u30d0\u30fc\u306b\u30d5\u30a1\u30a4\u30eb\u3092\u8981\u6c42\u3057\u307e\u3059\u3002<\/li>\n<li>\u66f8\u304d\u8fbc\u307f\u8981\u6c42 (WRQ): \u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u30b5\u30fc\u30d0\u30fc\u306b\u30d5\u30a1\u30a4\u30eb\u3092\u9001\u4fe1\u3057\u307e\u3059\u3002<\/li>\n<li>\u30c7\u30fc\u30bf: \u30b5\u30fc\u30d0\u30fc\u306f\u30c7\u30fc\u30bf \u30d6\u30ed\u30c3\u30af\u3092\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306b\u9001\u4fe1\u3057\u307e\u3059\u3002<\/li>\n<li>\u78ba\u8a8d\u5fdc\u7b54 (ACK): \u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306f\u30c7\u30fc\u30bf \u30d6\u30ed\u30c3\u30af\u306e\u53d7\u4fe1\u306b\u6210\u529f\u3057\u305f\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/li>\n<li>\u30a8\u30e9\u30fc: \u554f\u984c\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u3001\u30b5\u30fc\u30d0\u30fc\u306f\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306b\u30a8\u30e9\u30fc \u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u9001\u4fe1\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<h2>TFTP\u306e\u4e3b\u306a\u6a5f\u80fd<\/h2>\n<p>TFTP \u306b\u306f\u3001\u7279\u5b9a\u306e\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u306b\u9069\u3057\u305f\u3044\u304f\u3064\u304b\u306e\u91cd\u8981\u306a\u6a5f\u80fd\u304c\u5099\u308f\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<ol>\n<li>\n<p><strong>\u30b7\u30f3\u30d7\u30eb\u3055:<\/strong> TFTP \u306e\u30df\u30cb\u30de\u30ea\u30b9\u30c8\u8a2d\u8a08\u306b\u3088\u308a\u5b9f\u88c5\u304c\u5bb9\u6613\u306b\u306a\u308a\u3001\u4e92\u63db\u6027\u306e\u554f\u984c\u306e\u30ea\u30b9\u30af\u304c\u8efd\u6e1b\u3055\u308c\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u30ec\u30b9\u30d7\u30ed\u30c8\u30b3\u30eb:<\/strong> TFTP \u306f UDP \u4e0a\u3067\u52d5\u4f5c\u3059\u308b\u305f\u3081\u3001\u30c7\u30fc\u30bf\u3092\u8ee2\u9001\u3059\u308b\u524d\u306b\u63a5\u7d9a\u3092\u78ba\u7acb\u3057\u307e\u305b\u3093\u3002\u305d\u306e\u305f\u3081\u3001\u63a5\u7d9a\u306e\u4fe1\u983c\u6027\u304c\u91cd\u8981\u3067\u306a\u3044\u74b0\u5883\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u30b3\u30fc\u30c9\u30b5\u30a4\u30ba\u304c\u5c0f\u3055\u3044:<\/strong> TFTP \u306f\u30b3\u30fc\u30c9 \u30b5\u30a4\u30ba\u304c\u30b3\u30f3\u30d1\u30af\u30c8\u306a\u305f\u3081\u3001\u30eb\u30fc\u30bf\u3084\u30b9\u30a4\u30c3\u30c1\u306a\u3069\u306e\u30ea\u30bd\u30fc\u30b9\u304c\u5236\u9650\u3055\u308c\u305f\u30c7\u30d0\u30a4\u30b9\u3067\u3082\u5b9f\u884c\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u8a8d\u8a3c\u306a\u3057:<\/strong> \u3053\u308c\u306f\u5236\u9650\u4e8b\u9805\u3068\u307f\u306a\u3055\u308c\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u304c\u3001\u8a8d\u8a3c\u304c\u306a\u3044\u305f\u3081\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7 \u30d7\u30ed\u30bb\u30b9\u304c\u7c21\u7d20\u5316\u3055\u308c\u3001\u81ea\u52d5\u5316\u3055\u308c\u305f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u69cb\u6210\u306b\u306f TFTP \u304c\u597d\u307e\u308c\u308b\u9078\u629e\u80a2\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ol>\n<h2>TFTP\u306e\u7a2e\u985e<\/h2>\n<p>TFTP \u306b\u306f\u4e3b\u306b 2 \u3064\u306e\u52d5\u4f5c\u30e2\u30fc\u30c9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u30e2\u30fc\u30c9<\/th>\n<th>\u8aac\u660e<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>\u30cd\u30bf\u30b9\u30ad\u30fc<\/strong><\/td>\n<td>\u3053\u306e\u30e2\u30fc\u30c9\u306f\u3001\u7570\u306a\u308b\u6587\u5b57\u30bb\u30c3\u30c8\u3092\u6301\u3064\u30c7\u30d0\u30a4\u30b9\u9593\u3067\u30c6\u30ad\u30b9\u30c8 \u30d5\u30a1\u30a4\u30eb\u3092\u8ee2\u9001\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/td>\n<\/tr>\n<tr>\n<td><strong>\u30aa\u30af\u30c6\u30c3\u30c8\/\u30d0\u30a4\u30ca\u30ea<\/strong><\/td>\n<td>\u3053\u306e\u30e2\u30fc\u30c9\u306f\u3001\u30d5\u30a1\u30fc\u30e0\u30a6\u30a7\u30a2\u306e\u66f4\u65b0\u3084\u69cb\u6210\u306a\u3069\u306e\u30d0\u30a4\u30ca\u30ea \u30d5\u30a1\u30a4\u30eb\u3092\u8ee2\u9001\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>TFTP \u306e\u4f7f\u7528\u65b9\u6cd5\u3068\u3088\u304f\u3042\u308b\u554f\u984c<\/h2>\n<p>TFTP \u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u3055\u307e\u3056\u307e\u306a\u30b7\u30ca\u30ea\u30aa\u3067\u3088\u304f\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n<ul>\n<li>\n<p><strong>\u30d5\u30a1\u30fc\u30e0\u30a6\u30a7\u30a2\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8:<\/strong> TFTP \u306f\u3001\u30eb\u30fc\u30bf\u30fc\u3084\u30b9\u30a4\u30c3\u30c1\u306a\u3069\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30c7\u30d0\u30a4\u30b9\u306e\u30d5\u30a1\u30fc\u30e0\u30a6\u30a7\u30a2\u3092\u66f4\u65b0\u3059\u308b\u305f\u3081\u306b\u3088\u304f\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u30d6\u30fc\u30c8\u30b9\u30c8\u30e9\u30c3\u30d7\u30c7\u30d0\u30a4\u30b9:<\/strong> \u521d\u671f\u30d6\u30fc\u30c8 \u30d7\u30ed\u30bb\u30b9\u4e2d\u306b\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30c7\u30d0\u30a4\u30b9\u306f TFTP \u3092\u4f7f\u7528\u3057\u3066\u64cd\u4f5c\u306b\u5fc5\u8981\u306a\u30d5\u30a1\u30a4\u30eb\u3092\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u69cb\u6210\u7ba1\u7406:<\/strong> TFTP \u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30c7\u30d0\u30a4\u30b9\u3078\u306e\u69cb\u6210\u30d5\u30a1\u30a4\u30eb\u306e\u914d\u5e03\u3092\u5bb9\u6613\u306b\u3057\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5168\u4f53\u306e\u4e00\u8cab\u6027\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ul>\n<p>TFTP \u306b\u306f\u5229\u70b9\u304c\u3042\u308b\u3082\u306e\u306e\u3001\u3044\u304f\u3064\u304b\u306e\u5236\u9650\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n<ol>\n<li>\n<p><strong>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u6b20\u5982:<\/strong> TFTP \u306b\u306f\u8a8d\u8a3c\u3068\u6697\u53f7\u5316\u304c\u306a\u3044\u305f\u3081\u3001\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u3084\u30c7\u30fc\u30bf\u508d\u53d7\u306b\u5bfe\u3057\u3066\u8106\u5f31\u3067\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u5236\u9650\u3055\u308c\u305f\u30a8\u30e9\u30fc\u51e6\u7406:<\/strong> TFTP \u306e\u30a8\u30e9\u30fc \u30e1\u30c3\u30bb\u30fc\u30b8\u306f\u66d6\u6627\u306a\u3053\u3068\u304c\u591a\u3044\u305f\u3081\u3001\u554f\u984c\u306e\u8a3a\u65ad\u3084\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u304c\u56f0\u96e3\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u30d5\u30a1\u30a4\u30eb\u30ea\u30b9\u30c8\u306e\u30b5\u30dd\u30fc\u30c8\u306a\u3057:<\/strong> FTP \u3068\u306f\u7570\u306a\u308a\u3001TFTP \u3067\u306f\u30b5\u30fc\u30d0\u30fc\u4e0a\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u4e00\u89a7\u8868\u793a\u3059\u308b\u30e1\u30ab\u30cb\u30ba\u30e0\u304c\u63d0\u4f9b\u3055\u308c\u3066\u3044\u306a\u3044\u305f\u3081\u3001\u5834\u5408\u306b\u3088\u3063\u3066\u306f\u4e0d\u4fbf\u306b\u306a\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ol>\n<h2>\u4e3b\u306a\u7279\u5fb4\u3068\u6bd4\u8f03<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u7279\u6027<\/th>\n<th>FTP\u30b5\u30fc\u30d0\u30fc<\/th>\n<th>FTP<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>\u8a8d\u8a3c<\/strong><\/td>\n<td>\u8a8d\u8a3c\u306a\u3057<\/td>\n<td>\u30e6\u30fc\u30b6\u30fc\u540d\u3068\u30d1\u30b9\u30ef\u30fc\u30c9\u304c\u5fc5\u8981\u3067\u3059<\/td>\n<\/tr>\n<tr>\n<td><strong>\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u308b\u30b3\u30de\u30f3\u30c9<\/strong><\/td>\n<td>\u5236\u9650\u3042\u308a\uff08\u8aad\u307f\u53d6\u308a\u3001\u66f8\u304d\u8fbc\u307f\uff09<\/td>\n<td>\u5e83\u7bc4\u56f2\uff08\u4f8b\uff1aLIST\u3001PUT\u3001GET\uff09<\/td>\n<\/tr>\n<tr>\n<td><strong>\u30d7\u30ed\u30c8\u30b3\u30eb\u30bf\u30a4\u30d7<\/strong><\/td>\n<td>\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u30ec\u30b9 (UDP)<\/td>\n<td>\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u6307\u5411 (TCP)<\/td>\n<\/tr>\n<tr>\n<td><strong>\u8907\u96d1<\/strong><\/td>\n<td>\u5358\u7d14<\/td>\n<td>\u8907\u96d1\u306a<\/td>\n<\/tr>\n<tr>\n<td><strong>\u30ea\u30bd\u30fc\u30b9\u8981\u4ef6<\/strong><\/td>\n<td>\u4f4e\u3044<\/td>\n<td>\u9ad8\u3044<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u5c55\u671b\u3068\u5c06\u6765\u306e\u30c6\u30af\u30ce\u30ed\u30b8\u30fc<\/h2>\n<p>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u6280\u8853\u304c\u9032\u5316\u3059\u308b\u306b\u3064\u308c\u3066\u3001TFTP \u306e\u5f79\u5272\u306f\u3088\u308a\u5c02\u9580\u5316\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u7279\u5b9a\u306e\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u3067\u306f TFTP \u306e\u30b7\u30f3\u30d7\u30eb\u3055\u304c\u4f9d\u7136\u3068\u3057\u3066\u9b45\u529b\u7684\u3067\u3059\u304c\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3068\u4fe1\u983c\u6027\u306e\u6a5f\u80fd\u3092\u5f37\u5316\u3057\u305f\u6700\u65b0\u306e\u30d5\u30a1\u30a4\u30eb\u8ee2\u9001\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u4eba\u6c17\u304c\u9ad8\u307e\u3063\u3066\u3044\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001Secure File Transfer Protocol (SFTP) \u3068 Trivial File Transfer Protocol Secure (TFTP-SSH) \u306f\u3001\u6697\u53f7\u5316\u3068\u8a8d\u8a3c\u3092\u8ffd\u52a0\u3059\u308b\u3053\u3068\u3067 TFTP \u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5236\u9650\u306b\u5bfe\u51e6\u3057\u307e\u3059\u3002<\/p>\n<h2>\u30d7\u30ed\u30ad\u30b7\u30b5\u30fc\u30d0\u30fc\u3068TFTP<\/h2>\n<p>\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3068 TFTP \u30b5\u30fc\u30d0\u30fc\u9593\u306e\u4ef2\u4ecb\u5f79\u3068\u3057\u3066\u52d5\u4f5c\u3059\u308b\u3053\u3068\u3067\u3001TFTP \u30b7\u30ca\u30ea\u30aa\u3067\u5f79\u5272\u3092\u679c\u305f\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u7279\u5b9a\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u8a2d\u5b9a\u3067\u306f\u3001\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u3001\u983b\u7e41\u306b\u8981\u6c42\u3055\u308c\u308b TFTP \u30d5\u30a1\u30a4\u30eb\u3092\u30ad\u30e3\u30c3\u30b7\u30e5\u3057\u3001\u5e2f\u57df\u5e45\u306e\u4f7f\u7528\u3092\u6e1b\u3089\u3057\u3001\u30d5\u30a1\u30a4\u30eb\u8ee2\u9001\u3092\u9ad8\u901f\u5316\u3059\u308b\u3053\u3068\u3067\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5f37\u5316\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2>\u95a2\u9023\u30ea\u30f3\u30af<\/h2>\n<ul>\n<li><a href=\"https:\/\/tools.ietf.org\/html\/rfc783\" target=\"_new\" rel=\"noopener nofollow\">RFC 783 \u2013 TFTP \u30d7\u30ed\u30c8\u30b3\u30eb (IETF)<\/a><\/li>\n<li><a href=\"https:\/\/tools.ietf.org\/html\/rfc1350\" target=\"_new\" rel=\"noopener nofollow\">RFC 1350 \u2013 TFTP \u30d7\u30ed\u30c8\u30b3\u30eb (\u30ea\u30d3\u30b8\u30e7\u30f3 2) (IETF)<\/a><\/li>\n<li><a href=\"https:\/\/www.cisco.com\/c\/en\/us\/support\/docs\/ip\/tftp\/13705-8.html\" target=\"_new\" rel=\"noopener nofollow\">TFTP \u306e\u7406\u89e3 (Cisco)<\/a><\/li>\n<\/ul>","protected":false},"featured_media":479405,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-479404","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Trivial File Transfer Protocol (TFTP)<\/mark>","faq_items":[{"question":"What is Trivial File Transfer Protocol (TFTP)?","answer":"<p>Trivial File Transfer Protocol (TFTP) is a lightweight file transfer protocol used to transfer files between networked devices. It was designed to be simple and efficient, making it ideal for specific use cases where a basic file transfer method is needed.<\/p>"},{"question":"Who invented TFTP and when was it first introduced?","answer":"<p>TFTP was initially designed by Noel Chiappa in 1980. It was later refined and standardized by the Internet Engineering Task Force (IETF) through RFC 783 in 1981.<\/p>"},{"question":"How does TFTP work?","answer":"<p>TFTP operates on a client-server model. The client initiates the file transfer by requesting a file from the server. The server responds by sending the file in fixed-size blocks to the client. The client acknowledges the receipt of each block, allowing the server to send the next block until the file transfer is complete.<\/p>"},{"question":"What are the key features of TFTP?","answer":"<ul><li><p><strong>Simplicity:<\/strong> TFTP's minimalist design makes it easy to implement and reduces compatibility issues.<\/p><\/li><li><p><strong>Connectionless Protocol:<\/strong> TFTP operates over UDP, making it suitable for environments where connection reliability is not critical.<\/p><\/li><li><p><strong>Small Code Size:<\/strong> TFTP's compact code allows it to run on resource-constrained devices.<\/p><\/li><li><p><strong>No Authentication:<\/strong> TFTP lacks user authentication, making it suitable for automated network configurations.<\/p><\/li><\/ul>"},{"question":"What are the different types of TFTP?","answer":"<p>TFTP has two primary modes of operation:<\/p><ul><li><p><strong>Netascii:<\/strong> Used for transferring text files between devices with different character sets.<\/p><\/li><li><p><strong>Octet\/Binary:<\/strong> Used for transferring binary files, such as firmware updates or configurations.<\/p><\/li><\/ul>"},{"question":"What are some common uses of TFTP?","answer":"<p>TFTP is commonly used in the following scenarios:<\/p><ul><li>Firmware Updates: Updating firmware on network devices like routers and switches.<\/li><li>Bootstrapping Devices: Retrieving necessary files during the initial boot process.<\/li><li>Configuration Management: Distributing configuration files to network devices for uniformity.<\/li><\/ul>"},{"question":"What are the limitations of TFTP?","answer":"<ul><li><p><strong>Lack of Security:<\/strong> TFTP lacks authentication and encryption, making it vulnerable to unauthorized access and data interception.<\/p><\/li><li><p><strong>Limited Error Handling:<\/strong> TFTP's error messages are often vague, making troubleshooting challenging.<\/p><\/li><li><p><strong>No File Listing Support:<\/strong> Unlike FTP, TFTP does not provide a mechanism to list files on the server.<\/p><\/li><\/ul>"},{"question":"How does TFTP compare to FTP?","answer":"<table><thead><tr><th>Characteristic<\/th><th>TFTP<\/th><th>FTP<\/th><\/tr><\/thead><tbody><tr><td>Authentication<\/td><td>No authentication<\/td><td>Usernames and passwords required<\/td><\/tr><tr><td>Commands Supported<\/td><td>Limited (Read, Write)<\/td><td>Extensive (e.g., LIST, PUT, GET)<\/td><\/tr><tr><td>Protocol Type<\/td><td>Connectionless (UDP)<\/td><td>Connection-oriented (TCP)<\/td><\/tr><tr><td>Complexity<\/td><td>Simple<\/td><td>Complex<\/td><\/tr><tr><td>Resource Requirements<\/td><td>Low<\/td><td>High<\/td><\/tr><\/tbody><\/table>"},{"question":"What does the future hold for TFTP?","answer":"<p>As networking technology evolves, TFTP may become more specialized. Modern file transfer protocols like SFTP and TFTP-SSH address TFTP's security limitations by adding encryption and authentication.<\/p>"},{"question":"How do proxy servers relate to TFTP?","answer":"<p>Proxy servers can enhance TFTP performance by acting as intermediaries between clients and TFTP servers. They can cache frequently requested TFTP files, reducing bandwidth usage and speeding up file transfers.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki\/479404","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki\/479404\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/media\/479405"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/media?parent=479404"}],"curies":[{"name":"\u3046\u30fc\u3093","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}