{"height":"190","url":"https://memory-lovers.blog/entry/2019/01/25/231028","blog_url":"https://memory-lovers.blog/","published":"2019-01-25 23:10:28","title":"\u3010\u904b\u7528\u5c0f\u30cd\u30bf\u3011Web\u30b5\u30fc\u30d0\u306b\u63a5\u7d9a\u3057\u3066\u3044\u308b\u6570\u3092\u78ba\u8a8d\u3059\u308b(netstat -an | grep ...)","image_url":null,"type":"rich","author_url":"https://blog.hatena.ne.jp/wannabe-jellyfish/","author_name":"wannabe-jellyfish","provider_url":"https://hatena.blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fmemory-lovers.blog%2Fentry%2F2019%2F01%2F25%2F231028\" title=\"\u3010\u904b\u7528\u5c0f\u30cd\u30bf\u3011Web\u30b5\u30fc\u30d0\u306b\u63a5\u7d9a\u3057\u3066\u3044\u308b\u6570\u3092\u78ba\u8a8d\u3059\u308b(netstat -an | grep ...) - \u304f\u3089\u3052\u306b\u306a\u308a\u305f\u3044\u3002\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_title":"\u304f\u3089\u3052\u306b\u306a\u308a\u305f\u3044\u3002","categories":["\u904b\u7528","linux"],"provider_name":"Hatena Blog","version":"1.0","description":"\u3088\u304f\u3084\u308b\u3051\u3069\u3001\u6bce\u56de\u8abf\u3079\u308b\u3084\u3064\u3002\u3002netstat\u306e\u7d50\u679c\u3092\u30dd\u30fc\u30c8\u3067grep\u3059\u308b\u3060\u3051\u3002 $ netstat -an | grep -E ':(80|443)' | grep -v \"CLOSE_WAIT\" ESTABLISHED TCP\u3067\u306e\u63a5\u7d9a\u304c\u78ba\u7acb\u3055\u308c\u3066\u3001\u73fe\u5728\u901a\u4fe1\u304c\u884c\u308f\u308c\u3066\u3044\u308b\u72b6\u614b\u3092\u6307\u3059 TIME_WAIT \u63a5\u7d9a\u7d42\u4e86\u5f85\u3061\u306e\u72b6\u614b\u3092\u6307\u3059\u3002\u3057\u3070\u3089\u304f\u3059\u308b\u3068\u3001CLOSED\u3078\u79fb\u884c\u3059\u308b LISTENING \u5229\u7528\u53ef\u80fd\u306a\u30dd\u30fc\u30c8\u306e\u5f85\u3061\u53d7\u3051\u72b6\u614b\u3092\u6307\u3059\u3002\u300c-a\u300d\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u4ed8\u52a0\u3055\u305b\u305f\u5834\u5408\u306b\u8868\u793a\u3055\u308c\u308b SYN_SENT \u30b5\u30fc\u30d0\u306b\u63a5\u7d9a\u8981\u6c42\uff08SYNchronize\uff09\u3092\u9001\u4fe1\u3057\u305f\u304c\u3001\u5fdc\u7b54\uff08ACKnowledgement\uff09\u3092\u53d7\u3051\u3066\u3044\u2026","width":"100%"}