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dnsã«é–¢ã™ã‚‹micknã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (359)

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TuDoor
mickn 2024/05/14
DNS

TuDoor
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Cloudy with a Chance of Cyberattacks: Dangling Resources Abuse on Cloud Platforms
mickn 2024/04/05
DNS

security
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Abuse of dangling DNS records on cloud platforms | APNIC Blog
mickn 2024/04/05
DNS

security
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DNSæµ¸é€ã„ã†ãª - ãã‚Œã¯è¨€è‘‰ç‹©ã‚Šã˜ã‚ƒãªãã¦
DNS ãƒªã‚½ãƒ¼ã‚¹ãƒ¬ã‚³ãƒ¼ãƒ‰ã‚’ç®¡ç†ã—ã¦ã„ã‚‹ã¨ã€ã€ŒDNS ã«ã¯æµ¸é€æœŸé–“ãŒã‚ã‚‹ãŸã‚ã€DNS ã®è¨å®šå¤‰æ›´å¾Œã¯24æ™‚é–“ã€œ72æ™‚é–“ãŠå¾…ã¡ã„ãŸã ãå¿…è¦ãŒã‚ã‚Šã¾ã™ã€ãªã©ã¨æ›¸ã‹ã‚ŒãŸ DNS äº‹æ¥è€…ã®æ³¨æ„æ›¸ãã‚’è¦‹ã‹ã‘ã‚‹ã“ã¨ãŒã‚ã‚Šã¾ã™ã€‚ ãƒ›ã‚¹ãƒ†ã‚£ãƒ³ã‚°æ¥è€…ã«ã‚ˆã£ã¦ã€Œæµ¸é€ã€ç‰ãŒä¸é©åˆ‡ã«ä½¿ã‚ã‚Œã¦ã„ã‚‹ä¾‹ - www.e-ontap.com DNSæµ¸é€è¨€ã£ã¦ã‚‹ã¨ã“ã‚ã¨è¨€ã£ã¦ã„ãªã„ã¨ã“ã‚ã€ãƒ¬ãƒ³ã‚¿ãƒ«ã‚µãƒ¼ãƒç·¨ã€‘ - ohesotori.hateblo.jp ã“ã®ã‚ˆã†ãªè¨˜è¿°ãŒè”“å»¶ã£ã¦ã„ã‚‹ãŸã‚ã«ã€DNS åˆ©ç”¨è€…ã®é–“ã§ã€ŒDNS ã§ã¯è¨å®šãŒæµ¸é€ã™ã‚‹ã¾ã§å¾…ãŸãªã‘ã‚Œã°ãªã‚‰ãªã„ã€ã¨ã„ã†èª¤è§£ãŒåºƒã¾ã£ã¦ã„ã¾ã™ã€‚ ã¾ãŸã€DNS ãƒªã‚½ãƒ¼ã‚¹ãƒ¬ã‚³ãƒ¼ãƒ‰ã®åœ°ç†çš„ãªä¼æ’çŠ¶æ³ã‚’å¯è¦–åŒ–ã™ã‚‹ãŸã‚ã® DNS Propagation Checker ãªã‚‹ãƒ„ãƒ¼ãƒ«ãŒã„ãã¤ã‹å˜åœ¨ã—ã¦ã„ã¾ã™ã€‚ https://www.whatsmydns.net/ https://www.ns
mickn 2023/12/30
DNS
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ã‚°ãƒ«ãƒ¼ãƒ¬ã‚³ãƒ¼ãƒ‰ã«ã¤ã„ã¦æ”¹ã‚ã¦è€ƒãˆã‚‹ ï½žãƒ©ãƒ³ãƒã®ãŠã¨ã‚‚ã«DNSï½ž
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mickn 2023/11/22
DNS
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DNS propagation does not exist
BlogDNS propagation does not existCopy article link April 7, 2021A widespread fallacy among IT professionals is that DNS propagates through some network. So widespread in fact, that there are a couple of DNS checkers dedicated to visualizing the geographic propagation of DNS records. But DNS propagation does not exist.DNS propagation does not exist.So how does it work?When you request DNS records
mickn 2021/04/13
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æ¨©å¨DNSã‚’BIND->PowerDNS(on EC2)+Auroraã¸å†æ§‹æˆã—ãŸè©± - Pepabo Tech Portal
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mickn 2021/04/02
DNS
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SAD DNS
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mickn 2020/11/13
DNS
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DNSãƒ—ãƒãƒˆã‚³ãƒ«ã®ã“ã“æ•°å¹´ã®ãƒˆãƒ”ãƒƒã‚¯ç´¹ä»‹
ã“ã‚“ã«ã¡ã¯ã€æ»æ¾¤ã§ã™ã€‚ ç†è€…ã®è¶£å‘³ã¨ã—ã¦èª¿ã¹ã¦ã„ã‚‹DNSã®ãƒ—ãƒãƒˆã‚³ãƒ«ã®ã“ã“æ•°å¹´ã®ãƒˆãƒ”ãƒƒã‚¯ã«ã¤ã„ã¦ç´¹ä»‹ã—ã¦ã¿ã¾ã™ã€‚ ã»ã¼æ¯Žå¹´ã€DNSã«é–¢é€£ã™ã‚‹æ–°ã—ã„RFCï¼ˆã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆã«é–¢ã™ã‚‹æŠ€è¡“ä»•æ§˜ï¼‰ãŒå…¬é–‹ã•ã‚Œã€ä»•æ§˜ãŒæ›´æ–°ã•ã‚ŒãŸã‚Šã€æ–°ã—ã„ä»•æ§˜ãŒè¿½åŠ ã•ã‚ŒãŸã‚Šã—ã¦ã„ã¾ã™ã€‚ ã“ã“æ•°å¹´ã®ãƒˆãƒ”ãƒƒã‚¯ã«ã¤ã„ã¦ã¾ã¨ã‚ã¦ã¿ãŸã„ã¨æ€ã„ç«‹ã¡ã€ã“ã®è¨˜äº‹ã‚’æ›¸ãã¾ã—ãŸã€‚ ãªãŠã€ã“ã®è¨˜äº‹ã¯2020å¹´8æœˆæ™‚ç‚¹ã§ã®æƒ…å ±ã¨ãªã‚Šã¾ã™ã€‚ã™ã¹ã¦ã‚’ç¶²ç¾…ã—ã¦ã„ã‚‹ã‚ã‘ã§ã¯ã‚ã‚Šã¾ã›ã‚“ã€‚ ã¡ãªã¿ã«ã€ç†è€…ã¯æ¬¡ã®ã‚µã‚¤ãƒˆã‚’å…¬é–‹ã—ã¦ã„ã‚‹äººã§ã‚‚ã‚ã‚Šã¾ã™ã€‚ DNS RFCs ANYã‚¯ã‚¨ãƒªãƒ¼ã«å¯¾ã—ã¦RRsetã‚’ã™ã¹ã¦è¿”ã™ã‚ã‘ã§ã¯ãªã„ 2019å¹´1æœˆã«ã€ŒRFC 8482 Providing Minimal-Sized Responses to DNS Queries That Have QTYPE=ANYã€ãŒå…¬é–‹ã•ã‚Œã¾ã—ãŸã€‚ ã“ã®RFCã§ã¯ã€DNSãƒ¬ã‚¹ãƒãƒ³ãƒ€ãƒ¼ï¼ˆDNSãƒ¬
mickn 2020/09/01
DNS
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Subdomain Takeoverã«ã‚ˆã‚‹è©æ¬ºã‚µã‚¤ãƒˆã¸ã®èª˜å°Žã«ã¤ã„ã¦ã¾ã¨ã‚ã¦ã¿ãŸ - piyolog
2020å¹´7æœˆã¾ã§ã«å›½å†…å¤–ã®è¤‡æ•°ã®ãƒ‰ãƒ¡ã‚¤ãƒ³åãŒã€ŒSubdomain Takeoverã€ã¨ã¿ã‚‰ã‚Œã‚‹å½±éŸ¿ã‚’å—ã‘ã€å½“è©²ã‚µã‚¤ãƒˆã«æŽ¥ç¶šã—ãŸåˆ©ç”¨è€…ãŒè©æ¬ºã‚µã‚¤ãƒˆã«èª˜å°Žã•ã‚Œã‚‹äº‹è±¡ãŒç™ºç”Ÿã—ã¦ã„ã¾ã™ã€‚ã“ã“ã§ã¯ã“ã®äº‹è±¡ã«é–¢é€£ã™ã‚‹æƒ…å ±ã‚’ã¾ã¨ã‚ã¾ã™ã€‚ ä½•ãŒèµ·ãã¦ã‚‹ã®ï¼Ÿ èª˜å°Žã•ã‚Œã‚‹è©æ¬ºã‚µã‚¤ãƒˆã®ä¸€ä¾‹ å¤§æ‰‹çµ„ç¹”ã‚’å«ã‚€è¤‡æ•°ã®ãƒ‰ãƒ¡ã‚¤ãƒ³åã«ãŠã„ã¦ã€æ¤œç´¢ã‚µã‚¤ãƒˆã‹ã‚‰æŽ¥ç¶šã—ãŸéš›ã«è©æ¬ºã‚µã‚¤ãƒˆã¸é·ç§»ã•ã›ã‚‹äº‹è±¡ãŒç™ºç”Ÿã—ã¦ã„ãŸã€‚ å„çµ„ç¹”ç®¡ç†ã®ã‚µãƒ¼ãƒãƒ¼ã‚„ãƒ¬ã‚¸ã‚¹ãƒˆãƒ©ã€CDNã‚µãƒ¼ãƒ“ã‚¹ãŒç›´æŽ¥è¢«å®³ã‚’å—ã‘ãŸã®ã§ã¯ãªãã€Subdomain Takeoverã¨å‘¼ç§°ã•ã‚Œã‚‹æ‰‹æ³•ã«ã‚ˆã‚ŠéŽåŽ»ä½¿ç”¨ã•ã‚Œã¦ã„ãŸãƒ‰ãƒ¡ã‚¤ãƒ³åãŒç‹™ã‚ã‚ŒãŸã¨ã¿ã‚‰ã‚Œã‚‹ã€‚ ã©ã†å¯¾å¿œã™ã‚Œã°ã‚ˆã„ï¼Ÿ ä¸è¦ãªCNAMEãƒ¬ã‚³ãƒ¼ãƒ‰ã‚’å‰Šé™¤ã™ã‚‹ã€‚ å½±éŸ¿ç¯„å›²ã¯ï¼Ÿ æ£ç¢ºãªè¢«å®³çŠ¶æ³ã¯æŠŠæ¡ã—ã¦ã„ãªã„ãŒã€è¤‡æ•°ã®å›½å†…å¤–ã®ãƒ‰ãƒ¡ã‚¤ãƒ³åãŒå½±éŸ¿ã‚’å—ã‘ã¦ãŠã‚Šã€æ¤œç´¢ã«ã‹ã‹ã‚‹ã‚‚ã®ã ã‘ã§ã‚‚100ä»¶ä»¥ä¸Šã‚’piyokangoã¯ç¢ºèªï¼ˆ2020å¹´7æœˆ
mickn 2020/07/24
DNS
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CyStack | Security Research
CyStack Intelligent ProductsExplore our all-in-one security suite for robust digital protection, covering web app scans, device management, and secret safeguarding.
mickn 2019/08/22
DNS
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Itâ€™s time to consider avoiding IP fragmentation in the DNS | APNIC Blog
mickn 2019/07/17
DNS
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DNS over TLS/HTTPSã«ã¤ã„ã¦è€ƒãˆã‚‹ | IIJ Engineers Blog
ã¯ã˜ã‚ã« æ˜¨å¹´ã‹ã‚‰ DNS over TLS ï¼ˆDoTï¼‰ã€DNS over HTTPS ï¼ˆDoHï¼‰ ã«ã¾ã¤ã‚ã‚‹å‹•ããŒæ€¥é€Ÿã«æ´»ç™ºã«ãªã£ã¦ã„ã¾ã™ã€‚ DoT ã¯2016å¹´ã« RFC7858 ãŒå‡ºã¦ã—ã°ã‚‰ãã¯å¤§ããªå‹•ãã¯ã‚ã‚Šã¾ã›ã‚“ã§ã—ãŸãŒã€2017å¹´11æœˆã«ã‚µãƒ¼ãƒ“ã‚¹é–‹å§‹ã—ãŸ public DNS ã§ã‚ã‚‹ Quad9 ï¼ˆ9.9.9.9ï¼‰ã€æ˜¨å¹´4æœˆé–‹å§‹ã® Cloudflare ï¼ˆ1.1.1.1ï¼‰ãŒç›¸æ¬¡ã„ã§ DoT ã«æ£å¼å¯¾å¿œã—ã€é…ã‚Œã¦ä»Šå¹´1æœˆã«ã¯ Google Public DNS ï¼ˆ8.8.8.8ï¼‰ ã‚‚å¯¾å¿œã—ã¾ã—ãŸã€‚ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆå´ã¨ã—ã¦ã¯æ˜¨å¹´8æœˆãƒªãƒªãƒ¼ã‚¹ã® Android 9 â€œPieâ€ ãŒ DoT ã«å¯¾å¿œã—ã¦ã„ã¾ã™ã€‚ DoH ã¯ä»•æ§˜ã®æ¨™æº–åŒ–ã‚ˆã‚Šå®Ÿè£…ã®æ–¹ãŒå…ˆè¡Œã—ã¦ã„ã¾ã™ã€‚Cloudflare ã¯ DoT ã ã‘ã§ãªã DoH ã‚‚æ˜¨å¹´4æœˆã®ã‚µãƒ¼ãƒ“ã‚¹é–‹å§‹å½“åˆã‹ã‚‰ã‚µãƒãƒ¼ãƒˆã—ã¦ã„ã¾ã™ã€‚Mozilla Fire
mickn 2019/05/08
DNS
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IIJ Public DNSã‚µãƒ¼ãƒ“ã‚¹
ã‚µãƒ¼ãƒ“ã‚¹å†…å®¹ IIJ Public DNSã‚µãƒ¼ãƒ“ã‚¹ï¼ˆä»¥ä¸‹ã€æœ¬ã‚µãƒ¼ãƒ“ã‚¹ï¼‰ã¯DNS over TLSï¼ˆDoT/RFC7858ï¼‰ã€DNS over HTTPSï¼ˆDoH/RFC8484ï¼‰ã‚’åˆ©ç”¨ã—ãŸåå‰è§£æ±ºã‚µãƒ¼ãƒ“ã‚¹ã§ã™ã€‚ DoTã€DoHã¯ã€å¾“æ¥ç”¨ã„ã‚‰ã‚Œã¦ã„ã‚‹DNSã«å¤‰ã‚ã‚‹åå‰è§£æ±ºã®ãŸã‚ã®ãƒ—ãƒãƒˆã‚³ãƒ«ã¨ã—ã¦é–‹ç™ºãŒé€²ã‚ã‚‰ã‚Œã¦ã„ã¾ã™ã€‚ IIJã§ã¯ã€DoTã€DoHã«ã‚ˆã‚‹åå‰è§£æ±ºã®å®Ÿç”¨æ€§ã®ç¢ºèªã€ã¾ãŸã€DoTã€DoHã«å¯¾å¿œã—ãŸDNSã‚µãƒ¼ãƒã®é‹ç”¨ãƒŽã‚¦ãƒã‚¦ã®ç²å¾—ã®ãŸã‚ã€è©¦é¨“çš„ã«DoTã€DoHå¯¾å¿œã®åå‰è§£æ±ºã‚µãƒ¼ãƒ“ã‚¹ã‚’æä¾›ã„ãŸã—ã¾ã™ã€‚æœ¬ã‚µãƒ¼ãƒ“ã‚¹ã¯public DNSã¨ã—ã¦ã€IIJã‚’ã”å¥‘ç´„ã®æ–¹ä»¥å¤–ã§ã‚‚ã”åˆ©ç”¨ã„ãŸã ãã“ã¨ãŒã§ãã¾ã™ã€‚ DoTã€DoHã«ã”èˆˆå‘³ãŒã‚ã‚Šã€æœ¬ãƒšãƒ¼ã‚¸ã§ã”æ¡ˆå†…ã®æ¡é …ã«åŒæ„ã„ãŸã ã‘ã‚‹æ–¹ã¯ã€ã”åˆ©ç”¨ä¸ã®ãƒ‘ã‚½ã‚³ãƒ³ãƒ»ã‚¹ãƒžãƒ¼ãƒˆãƒ•ã‚©ãƒ³ã«è¨å®šã‚’è¡Œã†ã“ã¨ã§ã€æœ¬ã‚µãƒ¼ãƒ“ã‚¹ã‚’åˆ©ç”¨ã—ãŸåå‰è§£æ±ºã‚’è¡Œã†ã“ã¨ãŒã§ãã¾ã™ã€‚ DoTã€DoH
mickn 2019/05/08
DNS
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IIJã€ã€ŒDNS over TLSã€ã€ã€ŒDNS over HTTPSã€ã‚’åˆ©ç”¨ã—ãŸDNSã®è©¦é¨“ã‚µãƒ¼ãƒ“ã‚¹ã€ŒIIJ Public DNSã‚µãƒ¼ãƒ“ã‚¹ï¼ˆãƒ™ãƒ¼ã‚¿ç‰ˆï¼‰ã€ã‚’æä¾›é–‹å§‹ | IIJ
ãƒ›ãƒ¼ãƒ IIJã«ã¤ã„ã¦ æƒ…å ±ç™ºä¿¡ ãƒ—ãƒ¬ã‚¹ãƒªãƒªãƒ¼ã‚¹ 2019å¹´ IIJã€ã€ŒDNS over TLSã€ã€ã€ŒDNS over HTTPSã€ã‚’åˆ©ç”¨ã—ãŸDNSã®è©¦é¨“ã‚µãƒ¼ãƒ“ã‚¹ã€ŒIIJ Public DNSã‚µãƒ¼ãƒ“ã‚¹ï¼ˆãƒ™ãƒ¼ã‚¿ç‰ˆï¼‰ã€ã‚’æä¾›é–‹å§‹ IIJã€ã€ŒDNS over TLSã€ã€ã€ŒDNS over HTTPSã€ã‚’åˆ©ç”¨ã—ãŸDNSã®è©¦é¨“ã‚µãƒ¼ãƒ“ã‚¹ã€ŒIIJ Public DNSã‚µãƒ¼ãƒ“ã‚¹ï¼ˆãƒ™ãƒ¼ã‚¿ç‰ˆï¼‰ã€ã‚’æä¾›é–‹å§‹ ã“ã®ãƒ‹ãƒ¥ãƒ¼ã‚¹ã®PDFç‰ˆ [176KB] æ ªå¼ä¼šç¤¾ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆã‚¤ãƒ‹ã‚·ã‚¢ãƒ†ã‚£ãƒ–ï¼ˆIIJã€æœ¬ç¤¾ï¼šæ±äº¬éƒ½åƒä»£ç”°åŒºã€ä»£è¡¨å–ç· å½¹ç¤¾é•·ï¼šå‹ æ „äºŒéƒŽã€ã‚³ãƒ¼ãƒ‰ç•ªå·ï¼š3774 æ±è¨¼ç¬¬ä¸€éƒ¨ï¼‰ã¯ã€DNSã‚µãƒ¼ãƒã¨ã®é€šä¿¡ã‚’æš—å·åŒ–ã™ã‚‹ã€ŒDNS over TLSï¼ˆDoTï¼‰ã€ãŠã‚ˆã³ã€ŒDNS over HTTPS ï¼ˆDoHï¼‰ã€ã‚’åˆ©ç”¨ã—ãŸã€ŒIIJ Public DNSã‚µãƒ¼ãƒ“ã‚¹ï¼ˆãƒ™ãƒ¼ã‚¿ç‰ˆï¼‰ã€ã‚’ã€æœ¬æ—¥ã‚ˆã‚Šç„¡å„Ÿå…¬é–‹ã„ãŸã—ã¾ã™ã€‚æœ¬ã‚µãƒ¼ãƒ“ã‚¹ã¯DNSã‚ãƒ£
mickn 2019/05/08
DNS
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New Attacks on DNS Networks Lead to Emergency Directive by CISA
mickn 2019/03/04
DNS
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ã‚¤ãƒ³ã‚¿ãƒ¼ãƒŽãƒƒãƒˆå´©å£Šè«–è€…ã®ç‹¬ã‚Šè¨€ - DNSSEC ã¯å±ãªã„ (ãã®2) - Unbound ã‚’å®‰å…¨ã«ã—ã‚ˆã†
EPIC2014 Google Public DNS (8.8.8.8, 8.8.4.4) çµŒç”±ã§ã¯æœ¬ã‚µã‚¤ãƒˆã«ã‚¢ã‚¯ã‚»ã‚¹ã§ããªã„ã‚ˆã†æŽªç½®ã•ã›ã¦é ‚ã„ã¦ãŠã‚Šã¾ã™ã€‚ ç¾ä»£çš„ãª DNS ã‚ãƒ£ãƒƒã‚·ãƒ¥ã‚µãƒ¼ãƒã¯ RFC 4035 ã®è¦è«‹ã«ã‚ˆã‚Šã€DNSSEC ç½²åã®æ¤œè¨¼ã‚’å¿…è¦ã¨ã—ãªã„ãƒãƒªã‚·ãƒ¼ã®ã‚‚ã¨ã«ãŠã„ã¦ã‚‚ç„¡é§„ãª DNSSEC å¿œç”ã‚’è¦æ±‚ã™ã‚‹ DO bit ãƒ•ãƒ©ã‚°ãŒç«‹ã£ã¦ã—ã¾ã£ã¦ãŠã‚Šã€ç¬¬ä¸€ãƒ•ãƒ©ã‚°ãƒ¡ãƒ³ãƒˆä¾¿ä¹—æ”»æ’ƒã«è„†å¼±ã«ãªã£ã¦ã„ã¾ã™ã€‚ ã¾ãŸãƒ‡ãƒ•ã‚©ãƒ«ãƒˆè¨å®šã® Unbound ã¯å¦å®šå¿œç”ã«ä»˜éšã™ã‚‹ NS ã‚„ A ã‚’ã‚ãƒ£ãƒƒã‚·ãƒ¥ã«å–ã‚Šè¾¼ã‚“ã§ã—ã¾ã†ãŸã‚éžå¸¸ã«å±é™ºãªçŠ¶æ…‹ã§å‹•ä½œã—ã¦ã—ã¾ã„ã¾ã™ã€‚ 12/5 è¿½è¨˜: Unbound 1.8.2 releasedã« "The nameserver records in large returned negative responses are scrubbed out of the
mickn 2018/11/07
DNS
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GitHub - CZ-NIC/dns-collector: DNC collector colletcs data from DNS server into CSV file.
mickn 2018/06/29
DNS
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DNS traffic collector
mickn 2018/06/29
DNS
ãƒªãƒ³ã‚¯
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mickn 2018/05/25
DNS
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