[B! dns] a_bickyã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

a_bicky id:a_bicky

dnsã«é–¢ã™ã‚‹a_bickyã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (10)

${{author_name}}$

{{{comment_expanded}}}

{{label}}

{{#is_bookmark}}ãƒªã‚¹ãƒˆ{{/is_bookmark}}{{^is_bookmark}}ãƒªãƒ³ã‚¯{{/is_bookmark}}

${{author_name}}$
{{author_name}}{{created}}
{{ #comment }}{{ comment }}{{ /comment }}
- {{ label }}

${{author_name}}$

{{{comment_expanded}}}

{{label}}

{{#is_bookmark}}ãƒªã‚¹ãƒˆ{{/is_bookmark}}{{^is_bookmark}}ãƒªãƒ³ã‚¯{{/is_bookmark}}

åˆå¿ƒè€…ã®ãŸã‚ã®DNSã®è¨å®šã¨ã‚ˆãã‚ã‚‹ãƒˆãƒ©ãƒ–ãƒ«äº‹ä¾‹
Copyright Â© 2013 æ ªå¼ä¼šç¤¾æ—¥æœ¬ãƒ¬ã‚¸ã‚¹ãƒˆãƒªã‚µãƒ¼ãƒ“ã‚¹ 1 Copyright Â© 2013 æ ªå¼ä¼šç¤¾æ—¥æœ¬ãƒ¬ã‚¸ã‚¹ãƒˆãƒªã‚µãƒ¼ãƒ“ã‚¹ 1 Copyright Â© 2013 æ ªå¼ä¼šç¤¾æ—¥æœ¬ãƒ¬ã‚¸ã‚¹ãƒˆãƒªã‚µãƒ¼ãƒ“ã‚¹ 1 åˆå¿ƒè€…ã®ãŸã‚ã®DNSé‹ç”¨å…¥é–€ - ãƒˆãƒ©ãƒ–ãƒ«ã¨ãã®è§£æ±ºã®ãƒã‚¤ãƒ³ãƒˆ - 2013å¹´7æœˆ19æ—¥ DNS Summer Days 2013 æ ªå¼ä¼šç¤¾æ—¥æœ¬ãƒ¬ã‚¸ã‚¹ãƒˆãƒªã‚µãƒ¼ãƒ“ã‚¹ï¼ˆJPRSï¼‰ æ°´é‡Ž è²´å² Copyright Â© 2013 æ ªå¼ä¼šç¤¾æ—¥æœ¬ãƒ¬ã‚¸ã‚¹ãƒˆãƒªã‚µãƒ¼ãƒ“ã‚¹ 2 Copyright Â© 2013 æ ªå¼ä¼šç¤¾æ—¥æœ¬ãƒ¬ã‚¸ã‚¹ãƒˆãƒªã‚µãƒ¼ãƒ“ã‚¹ 2 Copyright Â© 2013 æ ªå¼ä¼šç¤¾æ—¥æœ¬ãƒ¬ã‚¸ã‚¹ãƒˆãƒªã‚µãƒ¼ãƒ“ã‚¹ 2 è¬›å¸«è‡ªå·±ç´¹ä»‹ â€¢ æ°åï¼šæ°´é‡Ž è²´å²ï¼ˆã¿ãšã® ãŸã‹ãµã¿ï¼‰ â€¢ ç”Ÿå¹´æœˆæ—¥ï¼š1988å¹´3æœˆ3æ—¥ï¼ˆ25æ³ï¼‰ â€¢ æ‰€å±žï¼šæ ªå¼ä¼šç¤¾æ—¥æœ¬ãƒ¬ã‚¸ã‚¹ãƒˆãƒªã‚µãƒ¼ãƒ“ã‚¹ï¼ˆJPRSï¼‰ ã‚·ã‚¹ãƒ†ãƒ éƒ¨ â€¢ Unixæ´ï¼š8å¹´ç›®ï¼ˆF
a_bicky 2020/02/16
dns
ãƒªãƒ³ã‚¯
ioãƒ‰ãƒ¡ã‚¤ãƒ³éšœå®³ã‚’ç†è§£ã™ã‚‹ãŸã‚ã€DNSã®ä»•çµ„ã¿ã«ã¤ã„ã¦å‹‰å¼·ã—ãŸ - $shibayu36->blog;
å…ˆæ—¥ã€ioãƒ‰ãƒ¡ã‚¤ãƒ³ã®éšœå®³ãŒã‚ã£ãŸã®ã ã‘ã©ã€è‡ªåˆ†ãŒDNSã®ä»•çµ„ã¿ã‚’ã‚ˆãåˆ†ã‹ã£ã¦ã„ãªã„ã›ã„ã§ã€ã„ã¾ã„ã¡ã©ã†ã„ã†ã“ã¨ãŒèµ·ã“ã£ã¦ã„ãŸã®ã‹æŠŠæ¡ã§ããªã‹ã£ãŸã€‚ãã“ã§ã€DNSã®ä»•çµ„ã¿ã«ã¤ã„ã¦è»½ãå‹‰å¼·ã—ãŸã®ã§ã€ãã®ãƒ¡ãƒ¢ã‚’æ®‹ã—ã¦ãŠãã€‚å†…å®¹ã¯é–“é•ã£ã¦ã„ã‚‹ã‹ã‚‚ã—ã‚Œãªã„ã®ã§ã€ãã®å ´åˆã¯æŒ‡æ‘˜ã—ã¦ãã ã•ã„ã€‚ DNSã«ã¤ã„ã¦å¦ã‚“ã ã“ã¨ Software Design 2015/4ã®DNSã®æ•™ç§‘æ›¸ãŒéžå¸¸ã«å‹‰å¼·ã«ãªã£ãŸã€‚ã¾ãŸã€ ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆ10åˆ†è¬›åº§ï¼šDNSã‚ãƒ£ãƒƒã‚·ãƒ¥ - JPNICã‚‚å‚è€ƒã«ãªã‚‹ã€‚ æ¨©å¨ã‚µãƒ¼ãƒã¨ãƒ•ãƒ«ãƒªã‚¾ãƒ«ãƒ ã¾ãšã€DNSã‚µãƒ¼ãƒã«ã¯æ¨©å¨ã‚µãƒ¼ãƒã¨ãƒ•ãƒ«ãƒªã‚¾ãƒ«ãƒã®äºŒã¤ã®ç¨®é¡žãŒå˜åœ¨ã™ã‚‹ã€‚ æ¨©å¨ã‚µãƒ¼ãƒ ãƒ‰ãƒ¡ã‚¤ãƒ³ã®æƒ…å ±ã‚’ç®¡ç†ã—ã€è‡ªåˆ†ã®ç®¡ç†ã—ã¦ã„ã‚‹ã‚¾ãƒ¼ãƒ³ã®æƒ…å ±ã‚’æä¾›ã™ã‚‹ã ã‘ã®ã‚µãƒ¼ãƒ å•ã„åˆã‚ã›ãŸãƒ‰ãƒ¡ã‚¤ãƒ³ãŒè‡ªåˆ†ã®ã‚¾ãƒ¼ãƒ³ã®ç®¡ç†ä¸‹ã§ã¯ãªã„å ´åˆã€åˆ¥ã®æ¨©å¨ã‚µãƒ¼ãƒã¸å§”ä»»ã™ã‚‹ã¨ã„ã†æƒ…å ±ã‚’è¿”ã™ ã‚³ãƒ³ãƒ†ãƒ³ãƒ„ã‚µãƒ¼ãƒã¨ã‚‚è¨€ã‚ã‚Œã‚‹? ä¾‹) co
a_bicky 2017/10/04
å®Ÿä¾‹è¦‹ã‚‹ã®ã« dig +trace ä¾¿åˆ©

network
ãƒªãƒ³ã‚¯
ã‚µãƒ³ãƒ—ãƒ«ã‚¹ãƒˆãƒ¼ãƒªãƒ¼ã§ç†è§£ã™ã‚‹DNSã®è¨å®šæ–¹æ³•ã¨å‘¨è¾ºçŸ¥è˜(æ”¹) - give IT a try
2013.4.20 è¿½è¨˜ CNAMEã®é–“é•ã£ãŸä½¿ã„æ–¹ã‚’æ›¸ã„ã¦ã„ãŸã®ã§ã€ã€Œ3. DNSãƒ¬ã‚³ãƒ¼ãƒ‰ã§CNAMEã‚„Aãƒ¬ã‚³ãƒ¼ãƒ‰ã‚’è¨å®šã™ã‚‹ã€ã®é …ã‚’ä¸€éƒ¨ä¿®æ£ã—ã¾ã—ãŸã€‚ ã¨ã„ã†ã‹ã€å®Ÿéš›ã«ç—›ã„ç›®ã«éã„ã¾ã—ãŸãƒ»ãƒ»ãƒ»(T T)ã€‚ è©³ã—ãã¯æœ¬æ–‡ã«ã¦ã€‚ 2014.10.10 è¿½è¨˜ çµå±€Herokuã§ã¯ã€ŒAãƒ¬ã‚³ãƒ¼ãƒ‰ + ãƒã‚¤ã‚ãƒƒãƒ‰ãƒ‰ãƒ¡ã‚¤ãƒ³ã€ã®è¨å®šã‚’ä½¿ã†ã“ã¨ã¯ã§ããªããªã‚Šã¾ã—ãŸã€‚ ãƒã‚¤ã‚ãƒƒãƒ‰ãƒ‰ãƒ¡ã‚¤ãƒ³ã‚’ä½¿ã†å ´åˆã¯ã€ã‹ã‚ã‚Šã«ã€ŒCNAME flatteningã€ã¨ã„ã†ä»•çµ„ã¿ã‚’ä½¿ã„ã¾ã™ã€‚ è©³ã—ãã¯ä»¥ä¸‹ã®è¨˜äº‹ã§èª¬æ˜Žã—ã¦ã„ã‚‹ã®ã§ã€å‚è€ƒã«ã—ã¦ã¿ã¦ãã ã•ã„ã€‚ å¦»ã®ãƒ‘ãƒ³å±‹ã®webã‚µã‚¤ãƒˆã‚’ã„ã‚ã„ã‚æ›´æ–°ã—ãŸè©± ï½žRails 4ã‚¢ãƒƒãƒ—ãƒ‡ãƒ¼ãƒˆã¨ã‹ã‚µã‚¤ãƒˆã®é«˜é€ŸåŒ–ã¨ã‹ï½ž - give IT a try ã¯ã˜ã‚ã« ã¿ãªã•ã‚“ã€DNSã€ãƒãƒ¼ãƒ ã‚µãƒ¼ãƒãƒ¼(NS)ã€Aãƒ¬ã‚³ãƒ¼ãƒ‰ã€CNAMEã€ã¨è¨€ã‚ã‚Œã¦ã€ã€Œã‚ã‚ã€ã‚¢ãƒ¬ãã€ã£ã¦ã™ãã«é ã®ä¸ã«ã‚¤ãƒ¡ãƒ¼ã‚¸ãŒæµ®ã‹ã³ã¾ã™ã‹ï¼Ÿ
a_bicky 2016/09/25
dns
ãƒªãƒ³ã‚¯
ã‚ãƒ£ãƒƒã‚·ãƒ¥ãƒã‚¤ã‚ºãƒ‹ãƒ³ã‚°ã®é–‹ã„ãŸãƒ‘ãƒ³ãƒ‰ãƒ©ã®ç®±
ã‚ãƒ£ãƒƒã‚·ãƒ¥ãƒã‚¤ã‚ºãƒ‹ãƒ³ã‚°ã®é–‹ã„ãŸãƒ‘ãƒ³ãƒ‰ãƒ©ã®ç®± Opened Pandora's box of Cache Poisoning éˆ´æœ¨å¸¸å½¦ 2014.04.15 (Concept by å‰é‡Žå¹´ç´€ 2014.02) / English version èƒŒæ™¯ Kaminsky 2008å¹´ã€Dan Kaminsky æ°ãŒ TTL ã«å½±éŸ¿ã•ã‚Œãªã„æ¯’å…¥ã‚Œæ‰‹æ³•ã‚’ç™ºè¡¨ã—ãŸã€‚ ã—ã‹ã—ã€å½å¿œç”ã®Additional Section ã§æ¯’ãŒå…¥ã‚‹ã¨ã•ã‚ŒãŸã®ã¯èª¤ã‚Šã ã£ãŸã“ã¨ã‚’2011å¹´ã«éˆ´æœ¨ãŒæ˜Žã‹ã«ã—ãŸã€‚ http://www.e-ontap.com/dns/bindmatrix.html MÃ¼ller Bernhard MÃ¼ller ã® "IMPROVED DNS SPOOFING USING NODE RE-DELEGATION", 2008.7.14 https://www.sec-consult.c
a_bicky 2014/05/03
dns
ãƒªãƒ³ã‚¯
ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆ10åˆ†è¬›åº§ï¼šDNSã‚ãƒ£ãƒƒã‚·ãƒ¥ - JPNIC
ä»Šå›žã®10åˆ†è¬›åº§ã§ã¯ã€DNS(Domain Name System)ã®ä»•çµ„ã¿ã‚’ç†è§£ã™ã‚‹ã®ã«å¿…è¦ãªDNSã®ã‚ãƒ£ãƒƒã‚·ãƒ¥ã¨ãã‚Œã«èµ·å› ã™ã‚‹è„†å¼±æ€§ã«ã¤ã„ã¦ãŠè©±ã—ã—ã¾ã™ã€‚ DNSã®ãŠã•ã‚‰ã„ ã¾ãšã¯ã˜ã‚ã«ã€DNSã®ä»•çµ„ã¿ã«ã¤ã„ã¦ãŠã•ã‚‰ã„ã—ã¾ã™ã€‚ DNSã¯ã€ãƒ«ãƒ¼ãƒˆã‚¾ãƒ¼ãƒ³ã‚’èµ·ç‚¹ã¨ã—ãŸãƒ„ãƒªãƒ¼æ§‹é€ ã‚’æŒã¤ã€ä¸–ç•Œä¸ã«å˜åœ¨ã™ã‚‹å¤šæ•°ã®ã‚µãƒ¼ãƒãŒå”èª¿ã—ã‚ã£ã¦å‹•ä½œã™ã‚‹åˆ†æ•£ãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹ã§ã™ã€‚ã“ã‚Œã‚‰ã®ã‚µãƒ¼ãƒç¾¤ã«ã‚¢ã‚¯ã‚»ã‚¹ã™ã‚‹ã“ã¨ã§ã€ãƒ›ã‚¹ãƒˆåã‹ã‚‰IPã‚¢ãƒ‰ãƒ¬ã‚¹ã‚’æ¤œç´¢ã—ãŸã‚Šã€ãƒ¡ãƒ¼ãƒ«ã‚¢ãƒ‰ãƒ¬ã‚¹ã‹ã‚‰é€ä¿¡å…ˆãƒ¡ãƒ¼ãƒ«ã‚µãƒ¼ãƒã‚’ç‰¹å®šã—ãŸã‚Šã—ã¾ã™ã€‚ DNSã§ã¯ã€ã‚ã‚‹ç‰¹å®šã®ã‚µãƒ¼ãƒ1å°ãŒãƒ‰ãƒ¡ã‚¤ãƒ³åæƒ…å ±ã‚’ã™ã¹ã¦æŒã£ã¦ã„ã‚‹ã‚ã‘ã§ã¯ãªãã€ã€Œå§”ä»»ã€ã¨å‘¼ã°ã‚Œã‚‹ä»•çµ„ã¿ã§ãƒ‡ãƒ¼ã‚¿ã‚’éšŽå±¤ã”ã¨ã«åˆ†æ•£åŒ–ã—ã€ä½µã›ã¦ã‚µãƒ¼ãƒã®å†—é•·åŒ–ã‚’å®Ÿç¾ã—ã¦ã„ã¾ã™ã€‚ DNSã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆãŒãƒ‡ãƒ¼ã‚¿ã‚’å¾—ã‚‹ã¨ãã¯ã€ã“ã®å§”ä»»ã‚’ãƒ«ãƒ¼ãƒˆã‚¾ãƒ¼ãƒ³ã‹ã‚‰é †æ¬¡ãŸã©ã£ã¦ã„ãã“ã¨ã§ã€æœ€çµ‚çš„ã«å¿…è¦ãªæƒ…å ±ã‚’å¾—ã¾ã™ã€‚ DNS ã§ã¯ã€ãƒ‰
a_bicky 2014/05/03
dns
ãƒªãƒ³ã‚¯
å¼·çƒˆãªDNSã‚ãƒ£ãƒƒã‚·ãƒ¥ãƒã‚¤ã‚ºãƒ‹ãƒ³ã‚°æ‰‹æ³•ãŒå…¬é–‹ã•ã‚Œã‚‹:Geekãªãºãƒ¼ã˜
æœ¬æ—¥ã€JPRSãŒç·Šæ€¥ã®æ³¨æ„å–šèµ·ã‚’å…¬è¡¨ã—ã¾ã—ãŸã€‚ ç·Šæ€¥ï¼‰ã‚ãƒ£ãƒƒã‚·ãƒ¥ãƒã‚¤ã‚ºãƒ‹ãƒ³ã‚°æ”»æ’ƒã®å±é™ºæ€§å¢—åŠ ã«ä¼´ã†DNSã‚µãƒ¼ãƒãƒ¼ã®è¨å®šå†ç¢ºèªã«ã¤ã„ã¦ï¼ˆ2014å¹´4æœˆ15æ—¥å…¬é–‹ï¼‰- å•ã„åˆã‚ã›UDPãƒãƒ¼ãƒˆã®ãƒ©ãƒ³ãƒ€ãƒ åŒ–ã®é€Ÿã‚„ã‹ãªç¢ºèªãƒ»å¯¾å¿œã‚’å¼·ãæŽ¨å¥¨ ãã‚Œã«å¯¾ã—ã¦ã€2æœˆä¸æ—¬ã«è„†å¼±æ€§ã‚’ç™ºè¦‹ã—ã¦JPRSã¸ã¨å ±å‘Šã—ã¦ã„ãŸéˆ´æœ¨æ°(è„†å¼±æ€§ã¯å‰é‡Žæ°ã¨ã®å…±åŒç™ºè¦‹)ãŒã€JPRSã®æ³¨æ„å–šèµ·ã§ã¯ã€Œå±é™ºæ€§ã‚’ã‚ˆãç†è§£ã—ã¦å¯¾ç–ã‚’ã¨ã‚‹ã«ã‚ãŸã£ã¦ååˆ†ãªæƒ…å ±ãŒå«ã¾ã‚Œã¦ã„ã‚‹ã¨ã¯ã„ãˆã¾ã›ã‚“ã€ã¨ã—ã¦ã€ä»¥ä¸‹ã®æƒ…å ±ã‚’å…¬é–‹ã—ã¦ã„ã¾ã™ã€‚ é–‹ã„ãŸãƒ‘ãƒ³ãƒ‰ãƒ©ã®ç®± - é•·å¹´æ”¾ç½®ã•ã‚Œã¦ããŸDNSã®æã‚‹ã¹ãæ¬ é™¥ãŒæ˜Žã‚‰ã‹ã« ã‚ãƒ£ãƒƒã‚·ãƒ¥ãƒã‚¤ã‚ºãƒ‹ãƒ³ã‚°ã®é–‹ã„ãŸãƒ‘ãƒ³ãƒ‰ãƒ©ã®ç®± ã‚ãƒ£ãƒƒã‚·ãƒ¥ãƒã‚¤ã‚ºãƒ‹ãƒ³ã‚°ã®é–‹ã„ãŸãƒ‘ãƒ³ãƒ‰ãƒ©ã®ç®± - 2 - æœ¬æ¥ã§ã‚ã‚Œã°ã€ã‚ˆã‚Šä¸Šä½ã‹ã‚‰ã®æ£è¦ã®å›žç”ãŒå„ªå…ˆã•ã‚Œãªã‘ã‚Œã°ãªã‚‰ãªã„ã¯ãšãªã®ã«ã€ä¸‹ä½å´ãŒå„ªå…ˆã•ã‚Œã‚‹ä»•æ§˜ã«ãªã£ã¦ã„ã‚‹ã®ã§ã€å½è£…ã•ã‚ŒãŸãƒ‡ãƒ¼ã‚¿ãŒå„ªå…ˆã•ã‚Œã¦ã—ã¾ã†
a_bicky 2014/05/03
dns
ãƒªãƒ³ã‚¯
ãªãœã€ãƒãƒ¼ãƒ ã‚µãƒ¼ãƒã¯ã€ãƒ¬ã‚¸ã‚¹ãƒˆãƒ©ã«ç™»éŒ²ã—ã¦ã‚‚ã‚‰ã†å¿…è¦ãŒã‚ã‚‹ã®ã§ã—ã‚‡ã†ã‹ï¼Ÿâ€¦
ãªãœã€ãƒãƒ¼ãƒ ã‚µãƒ¼ãƒã¯ã€ãƒ¬ã‚¸ã‚¹ãƒˆãƒ©ã«ç™»éŒ²ã—ã¦ã‚‚ã‚‰ã†å¿…è¦ãŒã‚ã‚‹ã®ã§ã—ã‚‡ã†ã‹ï¼Ÿ ä¾‹ãˆã°ã€mogemoge.comï¼ˆä»®åï¼‰ã¨ã„ã†ãƒ‰ãƒ¡ã‚¤ãƒ³ã‚’å–å¾—ã—ã€å¤–éƒ¨ã®DNSã‚µãƒ¼ãƒã§mogemoge.comã‚’é‹ç”¨ã—ã¦ã„ã‚‹ã¨ã—ã¾ã™ã€‚ æ–°ãŸã«ãƒ‰ãƒ¡ã‚¤ãƒ³ã‚’å–å¾—ã™ã‚‹éš›ã€ns1.mogemoge.comã‚’ãƒãƒ¼ãƒ ã‚µãƒ¼ãƒã¨ã—ã€é‹ç”¨ã—ã‚ˆã†ã¨ã—ã¦ãŠã‚Šã¾ã™ã€‚ mogemoge.comã‚’ç®¡ç†ã—ã¦ã„ã‚‹å¤–éƒ¨DNSã‚µãƒ¼ãƒã«CNAMEã§ns1.mogemoge.comã‚’ç™»éŒ²ã—ã¾ã—ãŸã€‚ ã—ã‹ã—ã€æ–°ã—ããƒ‰ãƒ¡ã‚¤ãƒ³ã‚’å–å¾—ã™ã‚‹éš›ã€ns1.mogemoge.comã‚’ãƒãƒ¼ãƒ ã‚µãƒ¼ãƒã¨ã—ã¦ä½¿ã†ãŸã‚ã«ã¯ã€ns1.mogemoge.comã‚’ãƒãƒ¼ãƒ ã‚µãƒ¼ãƒã¨ã—ã¦ãƒ¬ã‚¸ã‚¹ãƒˆãƒ©ã«ç™»éŒ²ã—ã¦ã‚‚ã‚‰ã‚ãªã‘ã‚Œã°ä½¿ãˆãªã„ã¨è¨€ã‚ã‚Œã¾ã—ãŸã€‚ ãªãœã€ãã®ã‚ˆã†ãªå¿…è¦ãŒã‚ã‚‹ã®ã§ã—ã‚‡ã†ã‹ï¼Ÿ ã¾ãŸã€ç™»éŒ²ã—ã¦ã‚‚ã‚‰ã‚ãªã‘ã‚Œã°ã€ãƒãƒ¼ãƒ ã‚µãƒ¼ãƒã¨ã—ã¦ä½¿ãˆãªã„ã®ã§ã—ã‚‡ã†ã‹ï¼Ÿ ç§ã®è€ƒãˆã§ã¯ã€ãã‚“ãªäº‹ã—ãªãã¦ã‚‚ã€ns
a_bicky 2012/08/18
è³ªå•ã®å†…å®¹ã¨ã¯é•ã†ã‘ã©ã€ãƒ¬ã‚¸ã‚¹ãƒˆãƒ©ãŒã—ã¦ã„ã‚‹ã®ã¯ä¾‹ãˆã° example.com ã‚’ comãƒ‰ãƒ¡ã‚¤ãƒ³ã®ãƒãƒ¼ãƒ ã‚µãƒ¼ãƒã« example.com ã®ãƒãƒ¼ãƒ ã‚µãƒ¼ãƒã¯ã€Œã“ã‚Œï¼ã€ã¨ç™»éŒ²ã™ã‚‹ã“ã¨ã€‚ãƒ‰ãƒ¡ã‚¤ãƒ³ã®å–å¾—=ãƒãƒ¼ãƒ ã‚µãƒ¼ãƒã‚’ç™»éŒ²ã™ã‚‹æ¨©åˆ©ã®å–å¾—

dns
ãƒªãƒ³ã‚¯
DNSã®ä»•çµ„ã¿ã®åŸºæœ¬ã‚’ç†è§£ã—ã‚ˆã†
ã„ããªã‚Šã ãŒã€2001å¹´ã¯DNSï¼ˆDomain Name Systemï¼‰ã«ã¨ã£ã¦ã¯ã€å½“ãŸã‚Šå¹´ã¨ã‚‚ã„ãˆã‚‹å¹´ã ã£ãŸã€‚ãƒ‹ãƒ¥ãƒ¼ã‚¹ãªã©ã§ã‚‚å–ã‚Šä¸Šã’ã‚‰ã‚Œã¦ã„ã‚‹ãŒã€ã€Œæ—¥æœ¬èªžã€ã‚„ã€Œå¤šè¨€èªžã€ãƒ‰ãƒ¡ã‚¤ãƒ³ã¨ã„ã†å¤§ããªæ§‹é€ å¤‰åŒ–ãŒã‚·ã‚¹ãƒ†ãƒ å…¨ä½“ã«æŠ¼ã—å¯„ã›ã€ãƒ–ãƒãƒ¼ãƒ‰ãƒãƒ³ãƒ‰ç’°å¢ƒã®åºƒãŒã‚Šã¯ã€å€‹äººãŒãƒ‰ãƒ¡ã‚¤ãƒ³ã‚’å–å¾—ã—ã¦é‹ç”¨ã™ã‚‹ãŸã‚ã®è¶³æŽ›ã‹ã‚Šã¨ã‚‚ãªã£ãŸã€‚ æœ¬é€£è¼‰ã§ã¯ã€ãƒ‰ãƒ¡ã‚¤ãƒ³ã®é‹ç”¨ãªã©ã€ã“ã‚Œã‹ã‚‰DNSã¨ä»˜ãåˆãŠã†ã¨ã—ã¦ã„ã‚‹æ–¹ã€…ã‚’å¯¾è±¡ã«ã€ŒDNSã®æ¦‚å¿µã‚„é‹ç”¨ã®è€ƒãˆæ–¹ã€ã‚’æ˜Žã‚‰ã‹ã«ã—ã¦ã„ã“ã†ã€‚ãŸã ã—ã€ŒBINDã€ãªã©ã€DNSã«é–¢ã™ã‚‹å…·ä½“çš„ãªè£½å“ã®è¨å®šæ–¹æ³•ã«ã¤ã„ã¦ã¯è§¦ã‚Œãªã„ã€‚è©³ã—ãã¯ä»¥ä¸‹ã®è¨˜äº‹ã‚‚ãœã²å‚è€ƒã«ã—ã¦ã»ã—ã„ã€‚ DNSã¯ãªãœå¿…è¦ã‹ï¼Ÿ æœ€åˆã«ã€ã€ŒDNSã¨ã¯ä½•ã‹ã€ã‚’èª¬æ˜Žã™ã‚‹ãŸã‚ã«ã€ã€ŒãªãœDNSãŒå¿…è¦ã«ãªã‚‹ã®ã‹ã€ã‚’è€ƒãˆã¦ã¿ã‚ˆã†ã€‚ãã‚Œã«ã¯ã€æ´å²çš„çµŒç·¯ã‹ã‚‰è€ƒãˆã‚‹ã®ãŒåˆ†ã‹ã‚Šã‚„ã™ã„ã€‚ DNSã¯ã”æ‰¿çŸ¥ã®ã¨ãŠã‚Šã€IPã‚¢ãƒ‰ãƒ¬ã‚¹ã¨ãƒ›ã‚¹ãƒˆåã‚’ãƒžãƒƒãƒ”ãƒ³ã‚°ã—ã¦ç›¸äº’
a_bicky 2012/04/10
ã‚ã‹ã‚Šã‚„ã™ã„

network

dns
ãƒªãƒ³ã‚¯
æ„å¤–ã¨çŸ¥ã‚‰ã‚Œã¦ã„ãªã„ï¼Ÿã€€DNSãŒæŠ±ãˆã‚‹ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£å•é¡Œ
12æœˆ6æ—¥ã€Internet Week 2006ã®ã‚»ãƒƒã‚·ãƒ§ãƒ³ã®1ã¤ã¨ã—ã¦è¡Œã‚ã‚ŒãŸã€ŒDNS Dayã€ã§ã¯ã€ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆã®åŸºç›¤ã‚’æ”¯ãˆã‚‹DNSã‚µãƒ¼ãƒã®ã€Œã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£ã€ãŒãƒˆãƒ”ãƒƒã‚¯ã®1ã¤ã¨ãªã£ãŸã€‚ 12æœˆ5æ—¥ã‹ã‚‰8æ—¥ã«ã‹ã‘ã¦ã€ŒInternet Week 2006ã€ãŒæ¨ªæµœã§é–‹å‚¬ã•ã‚ŒãŸã€‚ã“ã®ã†ã¡12æœˆ6æ—¥ã«æ—¥æœ¬ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã‚¤ãƒ³ãƒ•ã‚©ãƒ¡ãƒ¼ã‚·ãƒ§ãƒ³ã‚»ãƒ³ã‚¿ãƒ¼ï¼ˆJPNICï¼‰ãŒä¸»å‚¬ã—ãŸã€ŒDNS Dayã€ã§ã¯ã€ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆã®åŸºç›¤ã‚’æ”¯ãˆã‚‹DNSã‚µãƒ¼ãƒã®ã€Œã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£ã€ãŒãƒˆãƒ”ãƒƒã‚¯ã®1ã¤ã¨ãªã£ãŸã€‚ ãªã‚Šã™ã¾ã—ã¨åå°„ã‚’æ‚ªç”¨ã—ãŸDoSæ”»æ’ƒ å–ã‚Šä¸Šã’ã‚‰ã‚ŒãŸèª²é¡Œã®1ã¤ã¯ã€å½è£…ã—ãŸç™ºä¿¡å…ƒIPã‚¢ãƒ‰ãƒ¬ã‚¹ã‹ã‚‰ä¸ç‰¹å®šå¤šæ•°ã®DNSã‚µãƒ¼ãƒã«ã‚¯ã‚¨ãƒªã‚’æŠ•ã’ã‹ã‘ã€è¢«å®³è€…ã«å¤šæ•°ã®ãƒ‘ã‚±ãƒƒãƒˆã‚’åå°„ã•ã›ã¦DoSçŠ¶æ…‹ã«é™¥ã‚Œã‚‹ã€ŒDNS amplification attackã€ã ã€‚2006å¹´3æœˆã«ã¯å®Ÿéš›ã«ãã®è¢«å®³ãŒç™ºç”Ÿã—ã€è¦å¯Ÿåºã‹ã‚‰ã‚‚é–¢é€£ã™ã‚‹ãƒ¬ãƒãƒ¼ãƒˆãŒå…¬è¡¨ã•ã‚Œ
a_bicky 2011/09/25
dns
ãƒªãƒ³ã‚¯
DNSæ‹¡å¼µEDNS0ã®è§£æžã€Œ512ãƒã‚¤ãƒˆã®å£ã€ - ruffnex
DNSæ‹¡å¼µEDNS0ã®è§£æž â– 0x01.) ã¯ã˜ã‚ã« ã€Œ512ãƒã‚¤ãƒˆã®å£ã€ã¨ã„ã†è¨€è‘‰ã‚’ã”å˜çŸ¥ã ã‚ã†ã‹ï¼Ÿ TCP/IPãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã«ãŠã„ã¦ã€ä¿¡é ¼æ€§ã¨é€Ÿåº¦ã¯ãƒˆãƒ¬ãƒ¼ãƒ‰ã‚ªãƒ•ã®é–¢ä¿‚ã«ã‚ã‚‹ã€‚ã‚ ãŸã‹ã‚‚ä»®æƒ³çš„ãªç©ºé–“ã‚’æ§‹ç¯‰ã—ã¦ã„ã‚‹ã‹ã®ã‚ˆã†ã«è¦‹ãˆã‚‹ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆã«ãŠã„ã¦ã‚‚ã€ ãƒªã‚¢ãƒ«ä¸–ç•Œã®ç‰©ç†çš„è·é›¢ã‚’ç„¡è¦–ã—ã¦ã„ã‚‹ã‚ã‘ã§ã¯ãªã„ã€‚æ—¥æœ¬ã®ã‚³ãƒ³ãƒ”ãƒ¥ãƒ¼ã‚¿ã‹ã‚‰ é€ä¿¡ã•ã‚ŒãŸãƒ‡ãƒ¼ã‚¿ãŒã€ãƒ–ãƒ©ã‚¸ãƒ«ã®ã‚³ãƒ³ãƒ”ãƒ¥ãƒ¼ã‚¿ã«å¿…ãšã—ã‚‚å±Šãã¨ã¯é™ã‚‰ãªã„ã€‚ã ã‹ã‚‰ã“ãã€ä¿¡é ¼æ€§ã‚’ä¿éšœã™ã‚‹ãŸã‚ã®TCPã§ã‚ã‚‹ã€‚ ã—ã‹ã—ã€ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆã®æ ¹å¹¹ã‚’æ”¯ãˆã¦ã„ã‚‹æŠ€è¡“ã®ã²ã¨ã¤ã§ã‚ã‚‹DNSï¼ˆDomain Name Systemï¼‰ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã¯ã€ä¿¡é ¼æ€§ã‚’å¤±ã†ã“ã¨ã¨å¼•ãæ›ãˆã«é€Ÿåº¦ã‚’é‡è¦–ã—ãŸ UDPã«ã‚ˆã‚Šå®Ÿç¾ã•ã‚Œã¦ã„ã‚‹ã€‚åå‰è§£æ±ºã¯ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆã®æ ¹å¹¹ã®ã²ã¨ã¤ã§ã‚ã‚‹ã¨è¨€ ãˆã‚‹ã ã‚ã†ã€‚ã—ã‹ã—ã€ãã®å‰²ã«ã¯ã‚ã¾ã‚Šæ³¨ç›®åº¦ãŒé«˜ããªã„ã€‚ ä»Šå›žã¯ãã‚“ãªã€ç¸ã®ä¸‹ã®åŠ›æŒã¡ã®è©±ã§ã‚ã‚‹ã€‚ â– 0x
a_bicky 2011/09/24
dns

edns0
ãƒªãƒ³ã‚¯
1