{"blog_title":"turgenev\u2019s blog","type":"rich","blog_url":"https://turgenev.hatenablog.com/","url":"https://turgenev.hatenablog.com/entry/2024/04/14/162509","categories":["\u30cd\u30c3\u30c8\u30ef\u30fc\u30af","Linux"],"version":"1.0","image_url":null,"height":"190","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fturgenev.hatenablog.com%2Fentry%2F2024%2F04%2F14%2F162509\" title=\"Linux 6.5\u306enetfilter\uff08iptables, nftables\uff09\u306eNAT\u306fTCP\u306eTIME_WAIT\u72b6\u614b\u306e\u30dd\u30fc\u30c8\u3092\u4f7f\u3044\u307e\u308f\u3059 - turgenev\u2019s blog\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","width":"100%","provider_url":"https://hatena.blog","author_url":"https://blog.hatena.ne.jp/turgenev/","title":"Linux 6.5\u306enetfilter\uff08iptables, nftables\uff09\u306eNAT\u306fTCP\u306eTIME_WAIT\u72b6\u614b\u306e\u30dd\u30fc\u30c8\u3092\u4f7f\u3044\u307e\u308f\u3059","provider_name":"Hatena Blog","published":"2024-04-14 16:25:09","author_name":"turgenev","description":"TCP\u3067\u306f\u3001\u81ea\u5206\u304b\u3089\u63a5\u7d9a\u3092\u5207\u65ad\u3059\u308b\u969b\u306b\u3001\u5916\u5411\u304d\u306eFIN\uff08+ACK\uff09\u2192\u5185\u5411\u304d\u306eFIN+ACK\u2192\u6700\u5f8c\u306e\u5916\u5411\u304d\u306eACK\u3001\u3068\u3044\u3046\u9806\u3067\u30d1\u30b1\u30c3\u30c8\u304c\u3084\u308a\u3068\u308a\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u5916\u5411\u304d\u306eACK\u3092\u9001\u3063\u305f\u3042\u3068\u3057\u3070\u3089\u304f\u306f\u30bd\u30b1\u30c3\u30c8\u3092\u4f7f\u3044\u56de\u3055\u306a\u3044\u3088\u3046\u306bTIME_WAIT\u3068\u3044\u3046\u72b6\u614b\u304c\u8a2d\u5b9a\u3055\u308c\u307e\u3059\uff08\u7406\u7531\u306f\u4ed6\u306e\u30b5\u30a4\u30c8\u3092\u898b\u3066\u304f\u3060\u3055\u3044\uff09\u3002 Linux\u306enetfilter\uff08conntrack\uff09\u306b\u3088\u308bNAT\u3067\u3082\u3001\uff08\u81ea\u7aef\u672b\u3042\u308b\u3044\u306f\u4ed6\u7aef\u672b\u304b\u3089\u306e\uff09TCP\u63a5\u7d9a\u3092\u7ba1\u7406\u3059\u308b\u306b\u3042\u305f\u3063\u3066\u3053\u306eTIME_WAIT\u306e\u72b6\u614b\u304c\u767a\u751f\u3057\u307e\u3059\u3002TIME_WAIT\u72b6\u614b\u306b\u306a\u3063\u3066\u3044\u308b\u30dd\u30fc\u30c8\u306f\u305d\u306e\u9593\u306fNAT\u306e\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b\u3053\u3068\u306f\u306a\u304f\u306a\u308a\u307e\u3059\u3002 \u4f8b\u3048\u3070192.168.1.1:2\u2026"}