{"id":638,"date":"2013-04-01T01:08:00","date_gmt":"2013-03-31T16:08:00","guid":{"rendered":"http:\/\/192.168.2.101\/e-learning\/?p=638"},"modified":"2014-01-23T16:37:49","modified_gmt":"2014-01-23T07:37:49","slug":"netstat","status":"publish","type":"post","link":"https:\/\/ssl.amulet.co.jp\/cat-user-linux\/command_line\/netstat.html","title":{"rendered":"7.9.\u3000netstat\u3067\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u63a5\u7d9a\u72b6\u614b\u306e\u78ba\u8a8d\u3092\u3059\u308b -netstat\u30b3\u30de\u30f3\u30c9-"},"content":{"rendered":"

7.9.\u3000netstat\u3067\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u63a5\u7d9a\u72b6\u614b\u306e\u78ba\u8a8d\u3092\u3059\u308b -netstat\u30b3\u30de\u30f3\u30c9-<\/h3>\n

\u3010\u30b3\u30de\u30f3\u30c9\u8aac\u660e\u3011<\/strong>
\n\u30db\u30b9\u30c8\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u63a5\u7d9a\u72b6\u614b\u3084\u30bd\u30b1\u30c3\u30c8\uff0f\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3054\u3068\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u7d71\u8a08\u306a\u3069\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306e\u30b3\u30de\u30f3\u30c9\u3067\u3059\u3002\u5b9f\u884c\u4f8b\u306f\u4e0b\u8a18\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n

# netstat<\/p>\n

Active Internet connections (w\/o servers)<\/p>\n

(1) \u00a0 \u00a0 \u00a0(2) \u00a0 \u00a0 \u00a0(3) \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 (4) \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0(5) \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0(6)
\nProto \u00a0Recv-Q Send-Q \u00a0\u00a0\u00a0Local Address\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0Foreign Address\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 State<\/p>\n

tcp\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a00\u00a0\u00a0\u00a0\u00a0\u00a0 0 192.168.2.81:ssh\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 192.168.2.122:56780\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 ESTABLISHED<\/p>\n

tcp\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0 0 192.168.2.81:ssh\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 192.168.2.118:51874\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 ESTABLISHED<\/p>\n

Active UNIX domain sockets (w\/o servers)<\/p>\n

(7) \u00a0 \u00a0 (8) \u00a0 \u00a0 (9)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 (10)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 (11) \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 (12)\u00a0\u00a0\u00a0 (13)
\nProto RefCnt Flags\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Type\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 State\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 I-Node \u00a0\u00a0Path<\/p>\n

unix\u00a0 10\u00a0\u00a0\u00a0\u00a0 [ ]\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 DGRAM\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a09663038 \/dev\/log<\/p><\/blockquote>\n

\u300cActive Internet connections\u300d\u4ee5\u4e0b\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u63a5\u7d9a\u72b6\u614b(\u30bd\u30b1\u30c3\u30c8\u306e\u72b6\u614b)\u3092\u8868\u3057\u3066\u3044\u307e\u3059\u3002\u30bd\u30b1\u30c3\u30c8\u3068\u306fIP\u30a2\u30c9\u30ec\u30b9\u3068\u30dd\u30fc\u30c8\u756a\u53f7\u306e\u7d44\u3092\u6307\u5b9a\u3057\u305f\u3082\u306e\u306e\u3053\u3068\u3067\u3059\u3002<\/p>\n

\u300cActive UNIX domain sockets\u300d\u4ee5\u4e0b\u306f\u3001\u30ed\u30fc\u30ab\u30eb\u30de\u30b7\u30f3\u4e0a\u306e\u30d7\u30ed\u30bb\u30b9\u304c\u5229\u7528\u3057\u3066\u3044\u308b\u30bd\u30b1\u30c3\u30c8(UNIX\u30c9\u30e1\u30a4\u30f3\u30bd\u30b1\u30c3\u30c8)\u306e\u72b6\u614b\u3092\u8868\u3057\u3066\u3044\u307e\u3059\u3002\u5916\u90e8\u3068\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u72b6\u614b\u3092\u78ba\u8a8d\u3057\u305f\u3044\u5834\u5408\u306f\u300cActive Internet connections\u300d(1)\u301c(7)\u3092\u53c2\u7167\u3057\u3066\u4e0b\u3055\u3044\u3002\u5404\u9805\u76ee\u306e\u610f\u5473\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n

    \n
  1. \u300cProto\u300d\u3000\u3000\u3000\u3000\u3000\u3000 \u30d7\u30ed\u30c8\u30b3\u30eb\u304cTCP\u3001UDP\u3069\u3061\u3089\u3067\u3042\u308b\u304b<\/span><\/li>\n
  2. \u300cRecv-Q\u300d\u3000\u3000\u3000\u3000\u3000\u00a0 \u30bd\u30b1\u30c3\u30c8\u306b\u63a5\u7d9a\u3055\u308c\u305f\u30e6\u30fc\u30b6\u30fc\u306b\u9001\u3089\u308c\u306a\u304b\u3063\u305f\u30c7\u30fc\u30bf\u306e\u30d0\u30a4\u30c8\u6570<\/span><\/li>\n
  3. \u300cSend-Q\u300d\u3000 \u3000\u3000\u00a0 \u30ea\u30e2\u30fc\u30c8\u30fb\u30db\u30b9\u30c8\u304c\u62d2\u5426\u3057\u305f\u30c7\u30fc\u30bf\u306e\u30d0\u30a4\u30c8\u6570<\/span><\/li>\n
  4. \u300cLocal Address\u300d\u3000\u3000 \u30ed\u30fc\u30ab\u30eb\u5074\u306e\u300c\u30ed\u30fc\u30ab\u30eb\u5074\u306e\u30db\u30b9\u30c8\u540d:\u30b5\u30fc\u30d3\u30b9\u540d\uff08\u30dd\u30fc\u30c8\u756a\u53f7\uff09\u300d<\/span><\/li>\n
  5. \u300cForeign Address\u300d\u3000\u300c\u30ea\u30e2\u30fc\u30c8\u5074\u306e\u30db\u30b9\u30c8\u540d:\u30b5\u30fc\u30d3\u30b9\u540d\uff08\u30dd\u30fc\u30c8\u540d\uff09\u300d<\/span><\/li>\n
  6. \u300cState\u300d \u30bd\u30b1\u30c3\u30c8\u306e\u72b6\u614b\u3092\u8868\u3057\u307e\u3059\u3002\u300cESTABLISHED\u300d\u306f\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u304c\u78ba\u7acb\u3055\u308c\u3066\u3044\u308b\u72b6\u614b\u3001\u300cCLOSE_WAIT\u300d\u306f\u7d42\u4e86\u5f85\u3061\u306e\u72b6\u614b\u3067\u3042\u308b\u3053\u3068\u3092\u793a\u3057\u307e\u3059\u3002\u30dd\u30fc\u30c8\u756a\u53f7\u304c\u30a6\u30a7\u30eb\u30ce\u30a6\u30f3\u30dd\u30fc\u30c8\u306e\u5834\u5408\u306f\u30b5\u30fc\u30d3\u30b9\u540d\u3067\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/span><\/li>\n
  7. \u300cProto\u300d\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u30d7\u30ed\u30c8\u30b3\u30eb\u304cTCP\u3001UDP\u3069\u3061\u3089\u3067\u3042\u308b\u304b<\/span><\/li>\n
  8. \u300cRefCnt\u300d\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u3053\u306e\u30bd\u30b1\u30c3\u30c8\u306b\u63a5\u7d9a\u3055\u308c\u3066\u3044\u308b\u30d7\u30ed\u30bb\u30b9\u6570<\/span><\/li>\n
  9. \u300cFlags\u300d\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u73fe\u5728\u306e\u30d5\u30e9\u30b0\u3002<\/span><\/li>\n
  10. \u300cACC\u300d\u306f\u30bd\u30b1\u30c3\u30c8\u304c\u63a5\u7d9a\u3055\u308c\u3066\u304a\u3089\u305a\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u304c\u63a5\u7d9a\u8981\u6c42\u3092\u5f85\u3063\u3066\u3044\u308b\u3053\u3068\u3092\u8868\u3057\u307e\u3059\u3002<\/span><\/li>\n
  11. \u300cType\u300d\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u30bd\u30b1\u30c3\u30c8\u306e\u30a2\u30af\u30bb\u30b9\u30fb\u30bf\u30a4\u30d7\u3002<\/span><\/li>\n
  12. \u300cState\u300d\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u30bd\u30b1\u30c3\u30c8\u306e\u72b6\u614b\u3002\u300cFree\u300d\u306f\u5272\u308a\u5f53\u3066\u304c\u306a\u3044\u30bd\u30b1\u30c3\u30c8\u3001<\/span><\/li>\n
  13. \u300cLISTENING\u300d\u306f\u63a5\u7d9a\u8981\u6c42\u5f85\u3061\u306e\u30bd\u30b1\u30c3\u30c8\u3001\u300cCONNECTING\u300d\u306f\u63a5\u7d9a\u4e2d\u306e\u30bd\u30b1\u30c3\u30c8\u3001\u300cCONNECTED\u300d\u306f\u63a5\u7d9a\u3055\u308c\u3066\u3044\u308b\u30bd\u30b1\u30c3\u30c8\u3001\u300cDISCONNECTING\u300d\u306f\u5207\u65ad\u4e2d\u306e\u30bd\u30b1\u30c3\u30c8\u3001\u300cUNKNOWN\u300d\u306f\u4e0d\u660e\u306a\u30bd\u30b1\u30c3\u30c8\u3001\u306a\u306b\u3082\u66f8\u304b\u308c\u3066\u3044\u306a\u3044\u5834\u5408\u306f\u4ed6\u306e\u30bd\u30b1\u30c3\u30c8\u306b\u63a5\u7d9a\u3055\u308c\u3066\u3044\u306a\u3044\u30bd\u30b1\u30c3\u30c8\u3002<\/span><\/li>\n
  14. \u300cI-Node\u300d\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 inode\u756a\u53f7<\/span><\/li>\n
  15. \u300cPath\u300d\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u30bd\u30b1\u30c3\u30c8\u3092\u5229\u7528\u3057\u3066\u3044\u308b\u30d7\u30ed\u30bb\u30b9\u306e\u30d1\u30b9<\/span><\/li>\n<\/ol>\n

    \u3010\u30aa\u30d7\u30b7\u30e7\u30f3\u8aac\u660e\u3011<\/strong>
    \nnetstat\u30b3\u30de\u30f3\u30c9\u306b\u306f\u4e0b\u8a18\u306e\u69d8\u306a\u30aa\u30d7\u30b7\u30e7\u30f3\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n\n\n\n\n\n
    -t<\/td>\nTCP\u306b\u95a2\u3059\u308b\u60c5\u5831\u3092\u8868\u793a\u3059\u308b<\/td>\n<\/tr>\n
    -u<\/td>\nUDP\u306b\u95a2\u3059\u308b\u60c5\u5831\u306e\u8868\u793a\u3059\u308b<\/td>\n<\/tr>\n
    -a<\/td>\n\u72b6\u614b\u306b\u95a2\u308f\u3089\u305a\u5168\u3066\u306e\u30bd\u30b1\u30c3\u30c8\u306b\u95a2\u3059\u308b\u60c5\u5831\u3092\u8868\u793a\u3059\u308b<\/td>\n<\/tr>\n
    -l<\/td>\n\u30ea\u30b9\u30cb\u30f3\u30b0\u72b6\u614b\u306e\u30bd\u30b1\u30c3\u30c8\u306b\u95a2\u3059\u308b\u60c5\u5831\u3092\u8868\u793a\u3059\u308b<\/td>\n<\/tr>\n
    -i<\/td>\nLAN\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u306b\u95a2\u3059\u308b\u60c5\u5831\u3092\u8868\u793a\u3059\u308b<\/td>\n<\/tr>\n
    -r<\/td>\n\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30fb\u30c6\u30fc\u30d6\u30eb\u306b\u95a2\u3059\u308b\u60c5\u5831\u3092\u8868\u793a\u3059\u308b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    \u3010\u52d5\u753b\u8aac\u660e\u3011<\/strong>
    \n\u30aa\u30d7\u30b7\u30e7\u30f3\u306a\u3057\u3067netstat\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002\u8868\u793a\u304c\u9577\u304f\u306a\u308b\u305f\u3081\u30d1\u30a4\u30d7\u3067less\u30b3\u30de\u30f3\u30c9\u3092\u7d44\u307f\u5408\u308f\u305b\u307e\u3059\u3002<\/p>\n

    # netstat | less<\/p><\/blockquote>\n

    \u6b21\u306b \"-a\"\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u3064\u3051\u3066\u5168\u3066\u306e\u30bd\u30b1\u30c3\u30c8\u306b\u95a2\u3059\u308b\u60c5\u5831\u3092\u8868\u793a\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n

    # netstat \u2013a | less<\/p><\/blockquote>\n

    -r\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u3064\u3051\u3066\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u60c5\u5831\u3092\u8868\u793a\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n

    # netstat \u2013r<\/p><\/blockquote>\n

    \n