{"id":1044,"date":"2012-10-10T18:26:41","date_gmt":"2012-10-10T09:26:41","guid":{"rendered":"http:\/\/auctionpro.co.kr\/?p=1044"},"modified":"2012-11-05T06:34:40","modified_gmt":"2012-11-04T21:34:40","slug":"google-dns","status":"publish","type":"post","link":"https:\/\/www.auctionpro.co.kr\/?p=1044","title":{"rendered":"Google DNS"},"content":{"rendered":"

Google DNS\uc758 \uc7a5\uc810<\/span><\/strong><\/p>\n


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\uc544\ub798 \uadf8\ub9bc\uc740 \ube14\ub85c\uadf8(http:\/\/googlesystem.blogspot.com\/2009\/12\/google-dns.html<\/span><\/a>)\uc5d0\uc11c \uac00\uc9c0\uace0 \uc628 \ud14c\uc2a4\ud2b8 \uacb0\uacfc\uc778\ub370\uc694. Google DNS\uc778 8.8.4.4\uc640 8.8.8.8\uc774 \ub2e4\ub978 DNS\uc5d0 \ube44\ud574\uc11c DNS \uc131\ub2a5\uc774 \uac00\uc7a5 \uc6b0\uc218\ud558\ub2e4\uace0 \ud569\ub2c8\ub2e4.(\ub2e8\ub9d0\uc774 \ubcf4\ub0b8 DNS Query\uc5d0 \ub300\ud55c \uc751\ub2f5\uc774 \uac00\uc7a5 \ube60\ub984)<\/span><\/div>\n
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\ub610\ud55c DNS \uc11c\ubc84\ub97c \ud5a5\ud55c \uacf5\uaca9(DoS Attack, Spoofing Attack)\uc5d0 \ub300\ud574\uc11c\ub3c4 \uc548\uc804\ud558\ub2e4\uace0 Google\uc5d0\uc11c\ub294 \uc598\uae30\ud558\uace0 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/div>\n

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\uc989, \uc0ac\uc6a9\uc790\uac00 Google DNS\ub97c \uc0ac\uc6a9\ud558\uba74 (1) DNS \uc751\ub2f5 \uc18d\ub3c4\uac00 \ube60\ub974\ub2e4! (2) Google DNS \uc11c\ubc84\ub294 Attack\uc5d0 \ubc29\uc5b4\uac00 \uc798 \ub3fc\uc5b4 \uc788\uc73c\ubbc0\ub85c \uc548\uc804\ud558\ub2e4! \ub77c\ub294 \uc7a5\uc810\uc744 \uac00\uc9c0\uace0 \uc788\ub2e4\uace0 \ud569\ub2c8\ub2e4. \uadfc\ub370 \uc65c cisco \ud648\ud398\uc774\uc9c0\uc5d0 \ub300\ud55c ping \uc751\ub2f5 \uc18d\ub3c4\ub294 \uc774\ub9ac\ub3c4 \ub2a6\uc740\uc9c0 \ubaa8\ub974\uaca0\uad70\uc694…. (\ub0b4\uc77c \ub2f5\uc744 \uae30\ub300\ud558\uc138\uc694!)<\/span><\/div>\n

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\uc0ac\uc6a9\uc790 \uc704\uce58\uc5d0 \uc0c1\uad00\uc5c6\uc774 Google DNS \uc8fc\uc18c\ub97c 8.8.8.8\/8.8.4.4\ub85c \uc124\uc815\ud560 \uc218 \uc788\ub294 \uc774\uc720<\/span><\/strong><\/span><\/div>\n

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\uc77c\ubc18\uc801\uc73c\ub85c Public IP \uc8fc\uc18c\ub97c \uac00\uc9c0\ub294 \ub178\ub4dc\ub294 \uc804\uc9c0\uad6c\uc0c1\uc5d0 \ud558\ub098\ub9cc \uc874\uc7ac\ud558\ub294\uac8c \uc77c\ubc18\uc801\uc785\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, \ub124\uc774\ubc84 \uc11c\ubc84 \uc8fc\uc18c\uc778 222.122.195.5\ub294 \uad6d\ub0b4 \ub124\uc774\ubc84 \uc11c\ubc84\ub9cc\uc774 \uac00\uc9c0\uace0 \uc788\ub294 \uc8fc\uc18c\uc774\uace0, \ub2e4\ub978 \uc5b4\ub290 \ub098\ub77c\/\uc9c0\uc5ed\uc5d0\ub294 \uc774 \uc8fc\uc18c\ub97c \uac00\uc9c4 \ub178\ub4dc(\uc11c\ubc84, \ub77c\uc6b0\ud130 \ub4f1)\ub294 \uc874\uc7ac\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.\u00a0<\/span><\/div>\n

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\ud558\uc9c0\ub9cc “IP Anycast”\ub77c\ub294 \uac1c\ub150\uc744 \uc774\uc6a9\ud558\uba74 \ubcf8 \uc81c\ud55c\uc744 \uadf9\ubcf5\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/div>\n
\uc804\uc138\uacc4 \uc5ec\ub7ec \uc9c0\uc5ed\uc5d0 \ub3d9\uc77c IP \uc8fc\uc18c\ub97c \uac00\uc9c0\ub294 \uc11c\ubc84\ub97c \ubd84\uc0b0 \ubc30\uce58\uc2dc\ud0a4\uace0, \uc11c\ubc84\uc5d0 \uc811\uc18d\ud558\ub294 \uac01 \uc9c0\uc5ed\uc758 \ub2e8\ub9d0\uc740 IP routing (IGP\ub85c\ub294 OSPF, IS-IS, EGP\ub85c\ub294 eBGP\uac00 \ub300\ud45c\uc801)\uc758 “shortest path \uc54c\uace0\ub9ac\uc998”\uc5d0 \ub530\ub77c \uac00\uc7a5 \uac00\uae4c\uc6b4 \uacf3\uc758 \uc11c\ubc84\uc640 \ud1b5\uc2e0 \ud560 \uc218 \uc788\ub3c4\ub85d \ud574 \uc8fc\ub294 \uac83\uc785\ub2c8\ub2e4.<\/span><\/div>\n
\uc989, IP \ub77c\uc6b0\ud305\ub9dd\uc740 shortest path \uc54c\uace0\ub9ac\uc998\uc5d0 \ub530\ub77c \ub3d9\uc77c IP\ub97c \uac00\uc9c4 \ub178\ub4dc(Destination IP \uc8fc\uc18c)\uac00 \uc5ec\ub7ec\uac1c\ub77c \ud558\ub354\ub77c\ub3c4 \uadf8 \uc911\uc5d0 \uc0ac\uc6a9\uc790(Source IP \uc8fc\uc18c)\uc640 \uac00\uc7a5 \uac00\uae4c\uc6b4 \uacf3\uc5d0 \uc704\uce58\ud55c \ub178\ub4dc\ub85c \ud328\ud0b7\uc744 \uc804\ub2ec\ud569\ub2c8\ub2e4. \uc5ec\uae30\uc11c “\uac00\uc7a5 \uac00\uae4c\uc6b4”\uc774\ub780 \ub77c\uc6b0\ud305 \ud504\ub85c\ud1a0\ucf5c\uc758 \uad00\uc810\uc73c\ub85c OSPF\/IS-IS\uc5d0\uc11c\ub294 Total Link Cost\uc774\uace0 eBGP\uc5d0\uc11c\ub294 AS-PATH\uac00 \ub300\ud45c\uc801\uc774\ub77c \ubcf4\uc2dc\uba74 \ub429\ub2c8\ub2e4.<\/span><\/div>\n

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Google DNS\ub294 \uc774 IP Anycast \uc6d0\ub9ac\ub97c \uc0ac\uc6a9\ud558\uace0 \uc788\ub294\ub370\uc694. \uc544\ub798 \uadf8\ub9bc\uc758 \uc608\uc640 \uac19\uc774 \uac01 \ub300\ub959\ubcc4\ub85c 8.8.8.8 \uc8fc\uc18c\ub97c \uac00\uc9c0\ub294 Google DNS \uc11c\ubc84\ub97c \uc704\uce58\uc2dc\ud0a4\uc2ed\ub2c8\ub2e4.\u00a0<\/span><\/div>\n
\uadf8\ub9ac\uace0 IP Anycasting\uc5d0 \uc758\ud574\uc11c \uac01 \ub300\ub959\uc5d0 \uc704\uce58\ud55c \uc0ac\uc6a9\uc790\uac00 \ubaa9\uc801\uc9c0 \uc8fc\uc18c(Destination IP address)\ub97c 8.8.8.8\ub85c \ud558\uc5ec \ud328\ud0b7(DNS \uba54\uc2dc\uc9c0)\uc744 \ubcf4\ub0b4\uba74 IP \ub9dd\uc5d0\uc11c\ub294 Shortest Path \uc54c\uace0\ub9ac\uc998\uc5d0 \uc758\ud574\uc11c \uadf8 \uc0ac\uc6a9\uc790\uc640 \uac00\uc7a5 \uac00\uae4c\uc6b4 \uc704\uce58\uc5d0 \uc788\ub294 Google DNS 8.8.8.8\ub85c \ud328\ud0b7\uc774 \ub77c\uc6b0\ud305 \ub418\uc5b4 \uac00\uac8c \ub429\ub2c8\ub2e4.<\/span><\/div>\n

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\uadfc\ub370 \ud55c\uac00\uc9c0 \uc880 \uc774\uc0c1\ud55c \uac83\uc740\uc694. \uc81c \uc790\ub9ac\uc5d0\uc11c 8.8.8.8 \ub610\ub294 8.8.4.4\ub85c trace route\ub97c \ud574 \ubcf4\uba74 \uadf8 \uc751\ub2f5\uc744 \uc8fc\ub294 \uc11c\ubc84\uc758 \uc704\uce58\uac00 \ubbf8\uad6d\uc73c\ub85c \ub098\uc624\ub124\uc694… \uad6d\ub0b4\uc5d0 Google Data Center\uac00 \uc5c6\uc9c0\ub9cc \uc804 \ucd5c\uc18c\ud55c \uc77c\ubcf8\uc5d0 \uc704\uce58\ud55c Google DNS \uc11c\ubc84\uc640 \ud1b5\uc2e0 \ud560 \uac83\uc73c\ub85c \uc0dd\uac01\ud588\uc5c8\uac70\ub4e0\uc694.. \uc65c \uc774\ub9ac \ub418\ub294\uc9c0 \ub204\uad6c \uc544\uc2dc\ub294 \ubd84 \uacc4\uc2dc\uba74 \ucf54\uba58\ud2b8 \uc880 \ubd80\ud0c1\ub4dc\ub9b4\uaed8\uc694. \u00a0^^*<\/span><\/div>\n
\uc544\ubb34\ud2bc.. \ubcf8 \uad81\uae08\uc810\uc740 \uc774\ubc88 \ubb38\uc81c\uc640 \ubcc4 \uc0c1\uad00\uc774 \uc5c6\uc73c\ubbc0\ub85c \uadf8\ub0e5 \ub118\uc5b4\uac00\ub3c4\ub85d \ud558\uaca0\uc2b5\ub2c8\ub2e4!<\/span><\/div>\n

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\uadf8\ub9ac\uace0 \ucc38\uace0\ub85c Google\uc740 \uc804\uc138\uacc4\uc5d0 40\uc5ec\uacf3\uc5d0 \uc790\uccb4 Data Center\ub97c \uac00\uc9c0\uace0 \uc788\uace0(\uc5ec\uae30\uc5d0 Google \uc11c\ubc84\uac00 \uc704\uce58\ud568), Google Data Center\uac04\uc758 \uc5f0\uacb0\ub3c4 \uc5ed\uc2dc Google \uc18c\uc720\uc758 fiber\ub97c \uc774\uc6a9\ud569\ub2c8\ub2e4. \uc989, Google\uc740 \uc5ec\ub7ec\ubd84\ub4e4\uc774 \uc544\uc2dc\ub294 \uc778\ud130\ub137 \uc11c\ube44\uc2a4 \uc81c\uacf5\ubfd0\ub9cc \uc544\ub2c8\ub77c, \ud1b5\uc2e0 \ud68c\uc120\uacfc Data Center\ub97c \ubcf4\uc720\ud558\uace0 \uc788\ub294 \uc77c\uc885\uc758 \ud1b5\uc2e0 \uc0ac\uc5c5\uc790\uc785\ub2c8\ub2e4.<\/span><\/p>\n

\ucc38\uc870 :http:\/\/www.netmanias.com\/bbs\/view.php?id=blog&no=234<\/a><\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Google DNS\uc758 \uc7a5\uc810 \uc544\ub798 \uadf8\ub9bc\uc740 \ube14\ub85c\uadf8(http:\/\/googlesystem.blogspot.com\/2009\/12\/google-dns.html)\uc5d0\uc11c \uac00\uc9c0\uace0 \uc628 \ud14c\uc2a4\ud2b8 \uacb0\uacfc\uc778\ub370\uc694. Google DNS\uc778 8.8.4.4\uc640 8.8.8.8\uc774 \ub2e4\ub978 DNS\uc5d0 \ube44\ud574\uc11c DNS \uc131\ub2a5\uc774 \uac00\uc7a5 \uc6b0\uc218\ud558\ub2e4\uace0 \ud569\ub2c8\ub2e4.(\ub2e8\ub9d0\uc774 \ubcf4\ub0b8 DNS Query\uc5d0 […]<\/a><\/p>\n<\/div>","protected":false},"author":6,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[53],"tags":[],"class_list":["post-1044","post","type-post","status-publish","format-standard","hentry","category-dns-domain-network-system"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.auctionpro.co.kr\/index.php?rest_route=\/wp\/v2\/posts\/1044","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.auctionpro.co.kr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.auctionpro.co.kr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.auctionpro.co.kr\/index.php?rest_route=\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.auctionpro.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1044"}],"version-history":[{"count":0,"href":"https:\/\/www.auctionpro.co.kr\/index.php?rest_route=\/wp\/v2\/posts\/1044\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.auctionpro.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1044"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.auctionpro.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1044"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.auctionpro.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1044"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}