2023/12/23 追è¨: RFC 9520 ã«ãªãã¾ãã == ãNegative Caching of DNS Resolution Failuresãã¨ããææ¡ããVerisignã®æ¹ãã«ãã£ã¦ææ¡ããã¦ãã¾ãã DNSã®åå解決ã®çµæã¯ã¤ãã®ããããã§ãã 1) è¦æ±ããããã¼ã¿ãå«ãå¿ç 2) è¦æ±ããããã¼ã¿ãåå¨ããªããã¨ã示ãå¿ç 3) ãããã¯ã¼ã¯ã¨ã©ã¼ãããã¼ã¿ä¸æ´åãªã©ã®ãæç¨ãªæ å ±ãå¾ãããªã(失æ) ä»åã®ææ¡ã§ã¯ã(3)ã®ã¨ã©ã¼ã«ã¤ãã¦ãæä½5ç§éãã¬ãã£ããã£ãã·ã¥ããããè¦æ±ãã¾ã(5å以ä¸ãã£ãã·ã¥ãã¦ã¯ãããªã)ã RFC2308 ãNegative Caching of DNS Queriesãã§ã¯ããµã¼ããè½ã¡ã¦ãããæ¥ç¶ã§ããªãå ´åã«ããªãã·ã§ãã«ã§ãã£ãã·ã¥ããäºãè¨è¿°ããã¦ã¯ãã¾ãã ã¢ããã¼ã·ã§ã³ ææ¡ä»æ§ã®ãªãã§ãDNSã®ã¨ã©ã¼ãèµ·ããã


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