{"id":5245,"date":"2026-02-06T23:33:10","date_gmt":"2026-02-06T23:33:10","guid":{"rendered":"https:\/\/securitybriefing.net\/?p=5245"},"modified":"2026-02-06T23:52:27","modified_gmt":"2026-02-06T23:52:27","slug":"%eb%8a%90%eb%a6%b0-dns-%ec%a1%b0%ed%9a%8c%eb%a5%bc-%ed%95%b4%ea%b2%b0%ed%95%98%eb%8a%94-%eb%b0%a9%eb%b2%95","status":"publish","type":"post","link":"https:\/\/securitybriefing.net\/ko\/%ea%b8%b0%ec%88%a0\/%eb%8a%90%eb%a6%b0-dns-%ec%a1%b0%ed%9a%8c%eb%a5%bc-%ed%95%b4%ea%b2%b0%ed%95%98%eb%8a%94-%eb%b0%a9%eb%b2%95\/","title":{"rendered":"\ub290\ub9b0 DNS \uc870\ud68c\ub97c \uc218\uc815\ud558\ub294 \ubc29\ubc95"},"content":{"rendered":"<p>\ub290\ub9b0 DNS \uc870\ud68c\ub294 \ube0c\ub77c\uc6b0\uc800\uac00 \uc6f9\ud398\uc774\uc9c0\ub97c \ub85c\ub4dc\ud558\uae30 \uc2dc\uc791\ud558\uae30 \uc804\uc5d0 \ubd88\ud544\uc694\ud55c \uc9c0\uc5f0\uc744 \ucd94\uac00\ud569\ub2c8\ub2e4. \uc77c\ubc18\uc801\uc778 DNS \ud574\uc11d\uc740 20\u2013120 ms\uac00 \uac78\ub9ac\uc9c0\ub9cc, \uc798\ubabb \uad6c\uc131\ub418\uac70\ub098 \uc131\ub2a5\uc774 \ub5a8\uc5b4\uc9c0\ub294 DNS\ub294 \uc774\ub97c 100 ms \uc774\uc0c1\uc73c\ub85c \ubc00\uc5b4\ub0bc \uc218 \uc788\uc2b5\ub2c8\ub2e4. DNS \uc870\ud68c \uc2dc\uac04\uc740 Time to First Byte (TTFB), \uc989 Core Web Vitals \uba54\ud2b8\ub9ad\uc5d0 \uc9c1\uc811\uc801\uc778 \uc601\ud5a5\uc744 \ubbf8\uce69\ub2c8\ub2e4. Google\uc758 \uc5f0\uad6c\uc5d0 \ub530\ub974\uba74 \ud398\uc774\uc9c0 \ub85c\ub4dc \uc2dc\uac04\uc774 3\ucd08\uc5d0\uc11c 5\ucd08\ub85c \uc99d\uac00\ud560 \ub54c \uc774\ud0c8 \ud655\ub960\uc774 32%\uc5d0\uc11c 90%\ub85c \ub6f0\uc5b4\uc624\ub985\ub2c8\ub2e4. \uc88b\uc740 \uc18c\uc2dd\uc740 \ub300\ubd80\ubd84\uc758 \uc6d0\uc778\uc774 \uc9c4\ub2e8\ud558\uace0 \uc218\uc815\ud558\uae30\uac00 \uac04\ub2e8\ud558\ub2e4\ub294 \uac83\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n<h2 class=\"wp-block-heading\" id=\"contents\">\ubaa9\ucc28<\/h2>\n\n\n<ol class=\"wp-block-list\">\n<li><a href=\"#causes\">\ub290\ub9b0 DNS\uc758 \uc6d0\uc778<\/a><\/li>\n\n\n\n<li><a href=\"#diagnose\">\ub2e8\uacc4 1: \ubb38\uc81c \uc9c4\ub2e8<\/a><\/li>\n\n\n\n<li><a href=\"#restart\">\ub2e8\uacc4 2: \ud558\ub4dc\uc6e8\uc5b4 \uc7ac\uc2dc\uc791<\/a><\/li>\n\n\n\n<li><a href=\"#switch-dns\">\ub2e8\uacc4 3: \ub354 \ube60\ub978 DNS \uc81c\uacf5\uc790\ub85c \uc804\ud658<\/a><\/li>\n\n\n\n<li><a href=\"#flush\">\ub2e8\uacc4 4: DNS \uce90\uc2dc \ud50c\ub7ec\uc2dc<\/a><\/li>\n\n\n\n<li><a href=\"#ipv6\">\ub2e8\uacc4 5: IPv6 \ud3f4\ubc31 \uc9c0\uc5f0 \uc218\uc815<\/a><\/li>\n\n\n\n<li><a href=\"#vpn\">\ub2e8\uacc4 6: VPN, \uc548\ud2f0\ubc14\uc774\ub7ec\uc2a4 \ubc0f \uc720\ub839 \uc5b4\ub311\ud130 \ud655\uc778<\/a><\/li>\n\n\n\n<li><a href=\"#doh\">\ub2e8\uacc4 7: DNS over HTTPS (DoH) \uad6c\uc131<\/a><\/li>\n\n\n\n<li><a href=\"#local-cache\">\ub2e8\uacc4 8: \ub85c\uceec DNS \uce90\uc2dc \uc11c\ubc84 \uc2e4\ud589<\/a><\/li>\n\n\n\n<li><a href=\"#browser\">\ub2e8\uacc4 9: \ube0c\ub77c\uc6b0\uc800\ubcc4 DNS \ubb38\uc81c \uc218\uc815<\/a><\/li>\n\n\n\n<li><a href=\"#optimize-records\">\ub2e8\uacc4 10: DNS \ub808\ucf54\ub4dc \ucd5c\uc801\ud654 (\uc6f9\uc0ac\uc774\ud2b8 \uc18c\uc720\uc790)<\/a><\/li>\n\n\n\n<li><a href=\"#reduce-domains\">\ub2e8\uacc4 11: \uc11c\ub4dc\ud30c\ud2f0 \ub3c4\uba54\uc778 \uc904\uc774\uae30 (\uc6f9\uc0ac\uc774\ud2b8 \uc18c\uc720\uc790)<\/a><\/li>\n\n\n\n<li><a href=\"#prefetch\">\ub2e8\uacc4 12: DNS \ud504\ub9ac\ud328\uce6d \uad6c\ud604 (\uc6f9 \uac1c\ubc1c\uc790)<\/a><\/li>\n\n\n\n<li><a href=\"#troubleshooting\">\ube60\ub978 \ucc38\uc870 \ubb38\uc81c \ud574\uacb0 \ud45c<\/a><\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n<h2 class=\"wp-block-heading\" id=\"causes\">\ub290\ub9b0 DNS\uc758 \uc6d0\uc778<\/h2>\n\n\n<p>\uc5ec\ub7ec \uc694\uc778\uc774 DNS \uc9c0\uc5f0\uc5d0 \uae30\uc5ec\ud569\ub2c8\ub2e4:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\ub290\ub9b0 ISP \uc81c\uacf5 DNS \uc11c\ubc84<\/strong> \u2014 ISP\uc758 \uae30\ubcf8 \ud574\uc11d\uae30\ub294 \uc885\uc885 \uacf5\uacf5 \ub300\uc548\ubcf4\ub2e4 \uc0c1\ub2f9\ud788 \ub290\ub9bd\ub2c8\ub2e4. GoDaddy \ubc0f Namecheap\uacfc \uac19\uc740 \ub4f1\ub85d\uae30\uad00\uc758 \ubb34\ub8cc DNS\ub3c4 \uc77c\ubc18\uc801\uc73c\ub85c \ub290\ub9bd\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong>\uc9c0\ub9ac\uc801 \uac70\ub9ac<\/strong> \u2014 DNS \uc11c\ubc84\uac00 \uba40\ub9ac \uc788\uc744\uc218\ub85d \uc655\ubcf5 \uc2dc\uac04\uc774 \uae38\uc5b4\uc9d1\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong>IPv6 \ud3f4\ubc31 \uc9c0\uc5f0<\/strong> \u2014 \ud604\ub300 \uc6b4\uc601 \uccb4\uc81c\ub294 IPv6 (AAAA) \uc870\ud68c\ub97c \uc6b0\uc120\uc2dc\ud569\ub2c8\ub2e4. ISP\uac00 IPv6 \uc9c0\uc6d0\uc774 \ubd80\uc871\ud558\uba74 \uc7a5\uce58\uac00 IPv4\ub85c \ud3f4\ubc31\ud558\uae30 \uc804\uc5d0 \ucd5c\ub300 5\ucd08 \ub3d9\uc548 \ub300\uae30\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong>\uacfc\ub3c4\ud55c DNS \ub808\ucf54\ub4dc<\/strong> \u2014 \uc0ac\uc6a9\ud558\uc9c0 \uc54a\uac70\ub098 \uc624\ub798\ub41c A, CNAME, TXT \ub808\ucf54\ub4dc\ub294 \uc870\ud68c\uc5d0 \uc624\ubc84\ud5e4\ub4dc\ub97c \ucd94\uac00\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong>CNAME \uccb4\uc774\ub2dd<\/strong> \u2014 \uc5ec\ub7ec \ubc88\uc758 \ub9ac\ub514\ub809\uc158 (CNAME \u2192 CNAME \u2192 A \ub808\ucf54\ub4dc)\uc740 \uc9c0\uc5f0\uc744 \uc313\ub294 \uc21c\ucc28\uc801 \uc870\ud68c\ub97c \uac15\uc81c\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong>DNS \uce90\uc2f1 \uc5c6\uc74c<\/strong> \u2014 \uce90\uc2f1\uc774 \uc5c6\uc73c\uba74 \ub3d9\uc77c\ud55c DNS \ucffc\ub9ac\uac00 \ub9e4 \ud398\uc774\uc9c0 \ub85c\ub4dc\ub9c8\ub2e4 \ubc18\ubcf5\ub429\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong>\uacfc\ubd80\ud558\ub41c \ub124\uc784\uc11c\ubc84<\/strong> \u2014 \ub124\uc784\uc11c\ubc84\uac00 \ubd80\uc871\ud55c \ud638\uc2a4\ud305 \uc81c\uacf5\uc790\ub294 \uc9c0\uc5f0\uc744 \ucd08\ub798\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong>\ub124\ud2b8\uc6cc\ud06c \ud63c\uc7a1 \ubc0f \ube44\ucd5c\uc801 \uacbd\ub85c<\/strong> \u2014 \uac00\uae4c\uc6b4 \uc11c\ubc84\ub77c\ub3c4 \uacbd\ub85c\uac00 \ud63c\uc7a1\ud558\uba74 \ub290\ub9b4 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong>VPN \ubc0f \ud504\ub85d\uc2dc \uac04\uc12d<\/strong> \u2014 VPN\uc740 DNS\ub97c \uc790\uccb4 \uc11c\ubc84\ub97c \ud1b5\ud574 \ub77c\uc6b0\ud305\ud558\uc5ec \ub290\ub824\uc9c8 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc77c\ubd80\ub294 \ud130\ub110 \uc678\ubd80\ub85c DNS \ucffc\ub9ac\ub97c \ub204\ucd9c\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong>\uc720\ub839 \ub124\ud2b8\uc6cc\ud06c \uc5b4\ub311\ud130<\/strong> \u2014 VPN \uc18c\ud504\ud2b8\uc6e8\uc5b4, \uac00\uc0c1 \uba38\uc2e0 \ub610\ub294 Docker\uc758 \uc720\ub839 \uc5b4\ub311\ud130\uac00 \uc624\ub798\ub41c DNS \uad6c\uc131\uc744 \ubcf4\uc720\ud558\uc5ec \ud574\uc11d\uc744 \ubc29\ud574\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong>\uc548\ud2f0\ubc14\uc774\ub7ec\uc2a4\/\ubc29\ud654\ubcbd DNS \ud544\ud130\ub9c1<\/strong> \u2014 \uc77c\ubd80 \ubcf4\uc548 \uc18c\ud504\ud2b8\uc6e8\uc5b4 (Norton, Kaspersky, Bitdefender)\ub294 DNS \ucffc\ub9ac\ub97c \uac00\ub85c\ucc44 \uc9c0\uc5f0\uc744 \ucd94\uac00\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong>\ube0c\ub77c\uc6b0\uc800 \uc218\uc900 DNS \uc624\ubc84\ub77c\uc774\ub4dc<\/strong> \u2014 Chrome, Firefox, Edge\ub294 \uc790\uccb4 \ub0b4\uc7a5 DNS over HTTPS (DoH) \uad6c\uc131\uc73c\ub85c OS DNS \uc124\uc815\uc744 \uc870\uc6a9\ud788 \uc624\ubc84\ub77c\uc774\ub4dc\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong>\ub108\ubb34 \ub9ce\uc740 \uc11c\ub4dc\ud30c\ud2f0 \ub3c4\uba54\uc778<\/strong> \u2014 \uc6f9\uc0ac\uc774\ud2b8\uac00 \ub85c\ub4dc\ud558\ub294 \uac01 \uace0\uc720 \ub3c4\uba54\uc778\uc740 \ucd1d \ud398\uc774\uc9c0 \ub85c\ub4dc \uc2dc\uac04\uc5d0 \ucd94\uac00\ub418\ub294 \ubcc4\ub3c4\uc758 DNS \uc870\ud68c\uac00 \ud544\uc694\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong>\ubcf4\uc870 DNS \ubbf8\uad6c\uc131<\/strong> \u2014 \ud3f4\ubc31 DNS \uc11c\ubc84\uac00 \uc5c6\uc73c\uba74 \uae30\ubcf8 \uc11c\ubc84\uac00 \ub2e4\uc6b4\ub418\uac70\ub098 \ub290\ub9b4 \ub54c \uc2dc\uc2a4\ud15c\uc774 \ud0c0\uc784\uc544\uc6c3\uc744 \uae30\ub2e4\ub9ac\uba70 \uba48\ucda5\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n<h2 class=\"wp-block-heading\" id=\"diagnose\">\ub2e8\uacc4 1: \ubb38\uc81c \uc9c4\ub2e8<\/h2>\n\n\n<p>\ubb34\uc5c7\uc774\ub4e0 \uc218\uc815\ud558\uae30 \uc804\uc5d0 DNS\uac00 \uc2e4\uc81c\ub85c \ubcd1\ubaa9\uc778\uc9c0 \ud655\uc778\ud558\uc2ed\uc2dc\uc624.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"using-dig-linuxmacos\">dig \uc0ac\uc6a9 (Linux\/macOS)<\/h3>\n\n\n<p>\uadf8\ub9ac\uace0 <code>\ub514\uadf8<\/code> \uba85\ub839\uc740 DNS \uc751\ub2f5 \uc2dc\uac04\uc744 \uce21\uc815\ud558\ub294 \uc8fc\uc694 \ub3c4\uad6c\uc785\ub2c8\ub2e4:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><samp># \ud2b9\uc815 DNS \uc11c\ubc84 \ucffc\ub9ac \ubc0f \uc751\ub2f5 \uc2dc\uac04 \ud655\uc778<br>\ub514\uadf8 example.com @8.8.8.8<br><br># \uac01 \ud649\uc758 \uc9c0\uc5f0\uc744 \ubcf4\uc5ec\uc8fc\ub294 \uc804\uccb4 \ubc18\ubcf5 \ucd94\uc801<br>\ub514\uadf8 example.com +trace<\/samp><\/p>\n<\/blockquote>\n\n\n\n<p>\ucd9c\ub825\uc5d0\ub294 <code>\ucffc\ub9ac \uc2dc\uac04<\/code> \ud544\ub4dc (\uc608: 34 ms)\uac00 \ud3ec\ud568\ub429\ub2c8\ub2e4. \uc774 \uac12\uc774 100 ms\ub97c \ucd08\uacfc\ud558\uba74 DNS \uacc4\uce35\uc774 \uc131\ub2a5 \ubb38\uc81c\uc785\ub2c8\ub2e4. \uc774\uc0c1\uc801\uc73c\ub85c\ub294 50 ms \uc774\ud558\ub97c \ubaa9\ud45c\ub85c \ud558\uc2ed\uc2dc\uc624.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"using-nslookup-windows\">nslookup \uc0ac\uc6a9 (Windows)<\/h3>\n\n\n<p>Windows \uc0ac\uc6a9\uc790\uc5d0\uac8c\ub294, <code>\uc5d4\uc5d0\uc2a4\ub8e9\uc5c5<\/code> \uae30\ubcf8 DNS \uc9c4\ub2e8 \ub3c4\uad6c\uc785\ub2c8\ub2e4:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><samp># \uae30\ubcf8 DNS \uc870\ud68c<br>\uc5d4\uc5d0\uc2a4\ub8e9\uc5c5 example.com<br><br># \ud2b9\uc815 DNS \uc11c\ubc84 \ucffc\ub9ac<br>\uc5d4\uc5d0\uc2a4\ub8e9\uc5c5 example.com 8.8.8.8<br><br># \ub3c4\uba54\uc778\uc758 \ub124\uc784\uc11c\ubc84 \ud655\uc778<br>\uc5d4\uc5d0\uc2a4\ub8e9\uc5c5 -type=ns example.com<\/samp><\/p>\n<\/blockquote>\n\n\n\n<p>\ub9cc\uc57d <code>\uc5d4\uc5d0\uc2a4\ub8e9\uc5c5<\/code> \uacb0\uacfc\uac00 \ube60\ub974\uac8c \ubc18\ud658\ub418\uc9c0\ub9cc \ube0c\ub77c\uc6b0\uc9d5\uc774 \ub290\ub9ac\uac8c \ub290\uaef4\uc9c4\ub2e4\uba74, \ubb38\uc81c\ub294 \ube0c\ub77c\uc6b0\uc800 \uc218\uc900 DNS, IPv6 \ud3f4\ubc31, \ub610\ub294 VPN \uac04\uc12d\uc77c \uac00\ub2a5\uc131\uc774 \ub192\uc2b5\ub2c8\ub2e4 \u2014 DNS \uc11c\ubc84 \uc790\uccb4\uac00 \uc544\ub2d9\ub2c8\ub2e4.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"using-ping-and-traceroute\">ping \ubc0f traceroute \uc0ac\uc6a9<\/h3>\n\n\n<p>DNS \uc11c\ubc84\uc5d0 \ub300\ud55c \uc6d0\uc2dc \ub124\ud2b8\uc6cc\ud06c \uc9c0\uc5f0\uc744 \ud14c\uc2a4\ud2b8\ud558\uc5ec \ub124\ud2b8\uc6cc\ud06c \ubb38\uc81c\uc640 DNS \uc560\ud50c\ub9ac\ucf00\uc774\uc158 \ubb38\uc81c\ub97c \ubd84\ub9ac\ud569\ub2c8\ub2e4:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><samp># \ub9ac\ub205\uc2a4\/\ub9e5OS<br>\ud551 -c 3 8.8.8.8<br>\ud2b8\ub808\uc774\uc11c\ub8e8\ud2b8 8.8.8.8<br><br># \uc708\ub3c4\uc6b0<br>\ud551 8.8.8.8<br>\ud2b8\ub808\uc774\uc11c\ud2b8 8.8.8.8<\/samp><\/p>\n<\/blockquote>\n\n\n\n<p>ping\uc774 \ub192\uc740 \uc9c0\uc5f0\uc744 \ubcf4\uc5ec\uc8fc\uc9c0\ub9cc <code>\ub514\uadf8<\/code> \ub3d9\uc77c\ud55c \uc11c\ubc84\uc5d0 \ub300\ud55c \uc18d\ub3c4\uac00 \ube44\ub840\uc801\uc73c\ub85c \ub290\ub9ac\ub2e4\uba74, \ubb38\uc81c\ub294 \ub124\ud2b8\uc6cc\ud06c \uac70\ub9ac\uc774\uc9c0 DNS \uc11c\ubc84 \uc790\uccb4\uac00 \uc544\ub2d9\ub2c8\ub2e4.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"350\" src=\"https:\/\/securitybriefing.net\/wp-content\/uploads\/2026\/02\/Slow-DNS-Lookup.jpg\" alt=\"\ub290\ub9b0 DNS \uc870\ud68c\" class=\"wp-image-5246\" srcset=\"https:\/\/securitybriefing.net\/wp-content\/uploads\/2026\/02\/Slow-DNS-Lookup.jpg 600w, https:\/\/securitybriefing.net\/wp-content\/uploads\/2026\/02\/Slow-DNS-Lookup-300x175.jpg 300w, https:\/\/securitybriefing.net\/wp-content\/uploads\/2026\/02\/Slow-DNS-Lookup-18x12.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure>\n\n\n<h3 class=\"wp-block-heading\" id=\"dns-benchmark-tools\">DNS \ubca4\uce58\ub9c8\ud06c \ub3c4\uad6c<\/h3>\n\n\n<ul class=\"wp-block-list\">\n<li><strong>GRC DNS \ubca4\uce58\ub9c8\ud06c<\/strong> \u2014 \uc218\uc2ed \uac1c\uc758 DNS \uc11c\ubc84\ub97c \ud14c\uc2a4\ud2b8\ud558\uace0 \uc18d\ub3c4\uc5d0 \ub530\ub77c \uc21c\uc704\ub97c \ub9e4\uae30\ub294 Windows \uc720\ud2f8\ub9ac\ud2f0\uc785\ub2c8\ub2e4. \ud2b9\uc815 \ub124\ud2b8\uc6cc\ud06c\uc5d0 \uac00\uc7a5 \ube60\ub978 \ud574\uc11d\uae30\ub97c \ucc3e\ub294 \ub370 \uac15\ub825\ud788 \ucd94\ucc9c\ub429\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong>\ub124\uc784\ubca4\uce58<\/strong> \u2014 Google \uc18c\uc720 \ub3c4\uad6c\ub85c, \ucef4\ud4e8\ud130\uc5d0 \uc0ac\uc6a9 \uac00\ub2a5\ud55c \uac00\uc7a5 \ube60\ub978 DNS \uc11c\ubc84\ub97c \ucc3e\uc544\ub0c5\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong>DNS\ud37c\ud504<\/strong> \u2014 \ubd80\ud558 \uc0c1\ud0dc\uc5d0\uc11c \uad8c\uc704 \uc788\ub294 DNS \uc11c\ubc84\ub97c \ubca4\uce58\ub9c8\ud06c\ud558\ub294 \uc624\ud508 \uc18c\uc2a4 \ub3c4\uad6c\uc785\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong>dnsdiag (dnsping, dnstraceroute, dnseval)<\/strong> \u2014 DNS \uce21\uc815\uc744 \uc704\ud55c Python \ub3c4\uad6c \uc138\ud2b8\uc785\ub2c8\ub2e4. \uc124\uce58\ub294 <code>pip3 \uc124\uce58 dnsdiag<\/code>.<\/li>\n\n\n\n<li><strong>dnsspeedtest.site<\/strong> \u2014 \uc18c\ud504\ud2b8\uc6e8\uc5b4 \uc124\uce58 \uc5c6\uc774 DNS over HTTPS\ub97c \uc0ac\uc6a9\ud558\uc5ec 20\uac1c \uc774\uc0c1\uc758 DNS \uc81c\uacf5\uc790\ub97c \ubca4\uce58\ub9c8\ud06c\ud558\ub294 \ube0c\ub77c\uc6b0\uc800 \uae30\ubc18 \ub3c4\uad6c\uc785\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n<h2 class=\"wp-block-heading\" id=\"restart\">\ub2e8\uacc4 2: \ud558\ub4dc\uc6e8\uc5b4 \uc7ac\uc2dc\uc791<\/h2>\n\n\n<p>\uc885\uc885 \uac04\uacfc\ub418\ub294 \uac00\uc7a5 \uac04\ub2e8\ud55c \uc218\uc815\uc785\ub2c8\ub2e4. \ub77c\uc6b0\ud130\ub97c \uc7ac\uc2dc\uc791\ud558\uba74 \ub0b4\ubd80 DNS \uce90\uc2dc\uac00 \uc9c0\uc6cc\uc9c0\uace0 \ub77c\uc6b0\ud305 \ubb38\uc81c\uac00 \ud574\uacb0\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub9ce\uc740 ISP \ub77c\uc6b0\ud130\ub294 \uc2dc\uac04\uc774 \uc9c0\ub0a8\uc5d0 \ub530\ub77c \uacfc\ubd80\ud558\ub418\uac70\ub098 \uc624\ub798\ub41c \uc0c1\ud0dc\uac00 \ub420 \uc218 \uc788\ub294 \ub0b4\uc7a5 DNS \ud3ec\uc6cc\ub354\ub97c \uac00\uc9c0\uace0 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ub77c\uc6b0\ud130\uc758 \uc804\uc6d0\uc744 30\ucd08 \ub3d9\uc548 \ubf51\uc558\ub2e4\uac00 \ub2e4\uc2dc \uaf42\uc73c\uc2ed\uc2dc\uc624.<\/li>\n\n\n\n<li>PC, \uc804\ud654 \ub610\ub294 \ud0dc\ube14\ub9bf\uc744 \uc7ac\uc2dc\uc791\ud558\uc2ed\uc2dc\uc624.<\/li>\n\n\n\n<li>\ubcc4\ub3c4\uc758 \ubaa8\ub380\uc744 \uc0ac\uc6a9\ud558\ub294 \uacbd\uc6b0, \uadf8\uac83\ub3c4 \uc7ac\uc2dc\uc791\ud558\uc2ed\uc2dc\uc624.<\/li>\n<\/ul>\n\n\n\n<p>\uc774\ub294 \uc77c\uc2dc\uc801\uc778 \uacb0\ud568\uc744 \uc9c0\uc6b0\uace0 \uc0c8\ub85c\uc6b4 DNS \uc5f0\uacb0\uc744 \uac15\uc81c\ud569\ub2c8\ub2e4. \ub2e4\ub978 \uc218\uc815\uc744 \uc2dc\ub3c4\ud558\uae30 \uc804\uc5d0 \uc774\uac83\uc744 \uc2dc\ub3c4\ud558\uc2ed\uc2dc\uc624.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"switch-dns\">\ub2e8\uacc4 3: \ub354 \ube60\ub978 DNS \uc81c\uacf5\uc790\ub85c \uc804\ud658<\/h2>\n\n\n<p>\ub300\ubd80\ubd84\uc758 \uc0ac\uc6a9\uc790\uc5d0\uac8c \uac00\uc7a5 \ud070 \uc601\ud5a5\uc744 \ubbf8\uce58\ub294 \ub2e8\uc77c \uc218\uc815\uc785\ub2c8\ub2e4. ISP\uc758 \uae30\ubcf8 DNS\ub97c \ub354 \ube60\ub978 \uacf5\uacf5 \ud574\uc11d\uae30\ub85c \uad50\uccb4\ud558\uc2ed\uc2dc\uc624. \ud56d\uc0c1 \uae30\ubcf8 \ubc0f \ubcf4\uc870 DNS\ub97c \ubaa8\ub450 \uad6c\uc131\ud558\uc2ed\uc2dc\uc624 \u2014 \ud3f4\ubc31\uc774 \uc5c6\uc73c\uba74 \uae30\ubcf8 \uc11c\ubc84\uac00 \ub2e4\uc6b4\ub418\uac70\ub098 \ub290\ub9b4 \ub54c \uc2dc\uc2a4\ud15c\uc774 \ud0c0\uc784\uc544\uc6c3\uc744 \uae30\ub2e4\ub9ac\uba70 \uba48\ucda5\ub2c8\ub2e4.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>\uc81c\uacf5\uc790<\/th><th>\uae30\ubcf8<\/th><th>\ubcf4\uc870<\/th><th>\uac15\uc810<\/th><\/tr><tr><td>\ud074\ub77c\uc6b0\ub4dc\ud50c\ub808\uc5b4<\/td><td>1.1.1.1<\/td><td>1.0.0.1<\/td><td>\uc885\uc885 \uc804 \uc138\uacc4\uc801\uc73c\ub85c \uac00\uc7a5 \ube60\ub984; \uac15\ub825\ud55c \uac1c\uc778\uc815\ubcf4 \ubcf4\ud638 \uc815\ucc45; EDNS \ud074\ub77c\uc774\uc5b8\ud2b8 \uc11c\ube0c\ub137\uc744 \uc9c0\uc6d0\ud558\uc9c0 \uc54a\uc74c (\ub354 \uacf5\uaca9\uc801\uc778 \uce90\uc2f1).<\/td><\/tr><tr><td>Google \uacf5\uc6a9 DNS<\/td><td>8.8.8.8<\/td><td>8.8.4.4<\/td><td>\ub9e4\uc6b0 \uc2e0\ub8b0\ud560 \uc218 \uc788\uc74c; \ub192\uc740 \uac00\ub3d9 \uc2dc\uac04; \ub354 \ub098\uc740 CDN \ub77c\uc6b0\ud305\uc744 \uc704\ud55c EDNS \ud074\ub77c\uc774\uc5b8\ud2b8 \uc11c\ube0c\ub137 \uc9c0\uc6d0.<\/td><\/tr><tr><td>\ucffc\ub4dc9<\/td><td>9.9.9.9<\/td><td>149.112.112.112<\/td><td>\uc54c\ub824\uc9c4 \uc545\uc131 \ub3c4\uba54\uc778\uc744 \ucc28\ub2e8; \uac15\ub825\ud55c \ubcf4\uc548 \ucd08\uc810.<\/td><\/tr><tr><td>\uc624\ud508DNS<\/td><td>208.67.222.222<\/td><td>208.67.220.220<\/td><td>\ube60\ub978 \ucffc\ub9ac \ucc98\ub9ac; \ucf58\ud150\uce20 \ud544\ud130\ub9c1 \uc635\uc158; \ubd80\ubaa8 \ud1b5\uc81c.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>Cloudflare\uc640 Google\uc5d0 \ub300\ud55c \ucc38\uace0 \uc0ac\ud56d:<\/strong> ThousandEyes\uc758 \uc5f0\uad6c\uc5d0 \ub530\ub974\uba74 Cloudflare\ub294 ISP \uc11c\ubc84\uc640 \ub3d9\ub4f1\ud55c \uc218\uc900\uc73c\ub85c DNS \ud574\uc11d\uc744 \uc81c\uacf5\ud558\uba70 (\ud3c9\uade0 23.4 ms) Google\uc740 \ud3c9\uade0 48.8 ms\ub97c \uae30\ub85d\ud588\uc2b5\ub2c8\ub2e4. \uadf8\ub7ec\ub098 Google\uc758 EDNS \ud074\ub77c\uc774\uc5b8\ud2b8 \uc11c\ube0c\ub137 \uc9c0\uc6d0\uc740 CDN \uce90\uc2dc \uc801\uc911\ub960\uc744 \ud5a5\uc0c1\uc2dc\ud0ac \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc6b0\uc120\uc21c\uc704\uc5d0 \ub530\ub77c \uc120\ud0dd\ud558\uc2ed\uc2dc\uc624: \uc6d0\uc2dc \uc18d\ub3c4 (Cloudflare) \ub610\ub294 CDN \ucd5c\uc801\ud654 (Google).<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"how-to-change-dns-on-windows\">Windows\uc5d0\uc11c DNS \ubcc0\uacbd \ubc29\ubc95<\/h3>\n\n\n<p>\uc124\uc815 \uc5f4\uae30 \u2192 \ub124\ud2b8\uc6cc\ud06c \ubc0f \uc778\ud130\ub137 \u2192 \uc774\ub354\ub137 (\ub610\ub294 Wi-Fi). DNS \uc11c\ubc84 \ud560\ub2f9 \uc606\uc758 \ud3b8\uc9d1 \ud074\ub9ad. \uc218\ub3d9\uc73c\ub85c \uc804\ud658\ud558\uace0, IPv4\ub97c \ud65c\uc131\ud654\ud558\uace0, \uc120\ud638\ud558\ub294 DNS \uc8fc\uc18c\ub97c \uc785\ub825\ud558\uc2ed\uc2dc\uc624.<\/p>\n\n\n\n<p>\ub610\ub294 \uba85\ub839 \ud504\ub86c\ud504\ud2b8\ub97c \ud1b5\ud574:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><samp>netsh \uc778\ud130\ud398\uc774\uc2a4 ip \ucd94\uac00 dns \uc774\ub984=\u201d\uc774\ub354\ub137\u201d \uc8fc\uc18c=1.1.1.1 \uc778\ub371\uc2a4=1<br>netsh \uc778\ud130\ud398\uc774\uc2a4 ip \ucd94\uac00 dns \uc774\ub984=\u201d\uc774\ub354\ub137\u201d \uc8fc\uc18c=1.0.0.1 \uc778\ub371\uc2a4=2<\/samp><\/p>\n<\/blockquote>\n\n\n<h3 class=\"wp-block-heading\" id=\"how-to-change-dns-on-macoslinux\">macOS\/Linux\uc5d0\uc11c DNS \ubcc0\uacbd \ubc29\ubc95<\/h3>\n\n\n<p>macOS\uc5d0\uc11c\ub294 \uc2dc\uc2a4\ud15c \uc124\uc815 \u2192 \ub124\ud2b8\uc6cc\ud06c \u2192 \uc5f0\uacb0 \u2192 DNS\ub85c \uc774\ub3d9\ud558\uc5ec \ud574\uc11d\uae30 IP\ub97c \ucd94\uac00\ud558\uc2ed\uc2dc\uc624. Linux\uc5d0\uc11c\ub294 <code>\/etc\/resolv.conf<\/code> \ub97c \ud3b8\uc9d1\ud558\uac70\ub098 \ub124\ud2b8\uc6cc\ud06c \uad00\ub9ac\uc790\ub97c \ud1b5\ud574 \uad6c\uc131\ud558\uc2ed\uc2dc\uc624:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><samp># Linux: \/etc\/resolv.conf \ud3b8\uc9d1<br>sudo nano \/etc\/resolv.conf<br><br># \ub2e4\uc74c \uc904 \ucd94\uac00:<br>\ub124\uc784\uc11c\ubc84 1.1.1.1<br>\ub124\uc784\uc11c\ubc84 1.0.0.1<\/samp><\/p>\n<\/blockquote>\n\n\n<h3 class=\"wp-block-heading\" id=\"change-dns-on-your-router\">\ub77c\uc6b0\ud130\uc5d0\uc11c DNS \ubcc0\uacbd<\/h3>\n\n\n<p>\ub124\ud2b8\uc6cc\ud06c \uc804\uccb4 \ubcc0\uacbd\uc744 \uc704\ud574 \ub77c\uc6b0\ud130\uc758 \uad00\ub9ac\uc790 \ud328\ub110 (\uc77c\ubc18\uc801\uc73c\ub85c 192.168.1.1 \ub610\ub294 192.168.0.1)\uc5d0\uc11c DNS \uc124\uc815\uc744 \uc5c5\ub370\uc774\ud2b8\ud558\uc2ed\uc2dc\uc624. \uc774\ub294 \ub124\ud2b8\uc6cc\ud06c\uc758 \ubaa8\ub4e0 \uc7a5\uce58\uc5d0 \uc601\ud5a5\uc744 \ubbf8\uce58\uba70, \uac01 \uc7a5\uce58\uc5d0\uc11c \uc124\uc815\ud560 \ud544\uc694\uac00 \uc5c6\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"flush\">\ub2e8\uacc4 4: DNS \uce90\uc2dc \ud50c\ub7ec\uc2dc<\/h2>\n\n\n<p>\uc624\ub798\ub418\uac70\ub098 \uc190\uc0c1\ub41c \uce90\uc2dc \ud56d\ubaa9\uc740 \ud574\uc11d \uc2e4\ud328\ub97c \ucd08\ub798\ud558\uac70\ub098 \uc798\ubabb\ub41c IP\ub85c \ub9ac\ub514\ub809\uc158\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ud50c\ub7ec\uc2dc\ub294 \uc0c8\ub85c\uc6b4 \uc870\ud68c\ub97c \uac15\uc81c\ud569\ub2c8\ub2e4:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>\uc6b4\uc601 \uccb4\uc81c<\/th><th>\uba85\ub839<\/th><\/tr><tr><td>\uc708\ub3c4\uc6b0 10\/11<\/td><td><code>ipconfig \/flushdns<\/code><\/td><\/tr><tr><td>\ub9e5OS (\ubca4\ud22c\ub77c+)<\/td><td><code>sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder<\/code><\/td><\/tr><tr><td>\ub9ac\ub205\uc2a4 (systemd)<\/td><td><code>sudo systemd-resolve --flush-caches<\/code> \ub610\ub294 <code>sudo resolvectl flush-caches<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\ube0c\ub77c\uc6b0\uc800 \uc218\uc900 \uce90\uc2dc\ub97c \uc78a\uc9c0 \ub9c8\uc2ed\uc2dc\uc624. Chrome\uc5d0\uc11c\ub294 <code>chrome:\/\/net-internals\/#dns<\/code> \ub85c \uc774\ub3d9\ud558\uc5ec \u201c\ud638\uc2a4\ud2b8 \uce90\uc2dc \uc9c0\uc6b0\uae30\u201d\ub97c \ud074\ub9ad\ud558\uc2ed\uc2dc\uc624. Firefox\uc5d0\uc11c\ub294 \ube0c\ub77c\uc6b0\uc800\ub97c \uc7ac\uc2dc\uc791\ud558\uac70\ub098 <code>about:networking#dns<\/code>.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"ipv6\">\ub2e8\uacc4 5: IPv6 \ud3f4\ubc31 \uc9c0\uc5f0 \uc218\uc815<\/h2>\n\n\n<p>\ub97c \ud1b5\ud574 DNS \uce90\uc2dc\ub97c \uc9c0\uc6b8 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"how-to-diagnose\">\ud45c\uc900 \uac00\uc774\ub4dc\uc5d0\uc11c \ubb34\uc2dc\ud558\ub294 \ub290\ub9b0 DNS\uc758 \uac00\uc7a5 \uc77c\ubc18\uc801\uc778 \uc228\uaca8\uc9c4 \uc6d0\uc778 \uc911 \ud558\ub098\uc785\ub2c8\ub2e4. \ud604\ub300 \uc6b4\uc601 \uccb4\uc81c\ub294 IPv4\ubcf4\ub2e4 IPv6 (AAAA) \uc870\ud68c\ub97c \uc6b0\uc120\uc2dc\ud569\ub2c8\ub2e4. ISP\uac00 IPv6 \uc9c0\uc6d0\uc774 \ubd80\uc871\ud558\uac70\ub098 \uc5c6\uc73c\uba74 \uc7a5\uce58\uac00 IPv4\ub85c \ud3f4\ubc31\ud558\uae30 \uc804\uc5d0 \ucd5c\ub300 5\ucd08 \ub3d9\uc548 IPv6 \uc751\ub2f5\uc744 \uae30\ub2e4\ub9bd\ub2c8\ub2e4. \uc774\ub294 \uc0c8\ub85c\uc6b4 \uc5f0\uacb0\ub9c8\ub2e4 \ubc1c\uc0dd\ud569\ub2c8\ub2e4.<\/h3>\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><samp>\uc9c4\ub2e8 \ubc29\ubc95<br># IPv6 \uc5f0\uacb0\uc131 \ud14c\uc2a4\ud2b8<br><br>ping -6 google.com<br># \uc774 \uc2dc\uac04\uc774 \ucd08\uacfc\ub418\uac70\ub098 \uba87 \ucd08\uac00 \uac78\ub9ac\uba74, IPv6\uac00 \ubb38\uc81c\uc785\ub2c8\ub2e4<br># IPv4\uc640 \ube44\uad50:<\/samp><\/p>\n<\/blockquote>\n\n\n<h3 class=\"wp-block-heading\" id=\"how-to-fix\">ping -4 google.com<\/h3>\n\n\n<p><strong>\uc218\uc815 \ubc29\ubc95<\/strong> \uc635\uc158 1: \ub124\ud2b8\uc6cc\ud06c \uc5b4\ub311\ud130\uc5d0\uc11c IPv6 \ube44\ud65c\uc131\ud654<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>(ISP\uac00 \uc9c0\uc6d0\ud558\uc9c0 \uc54a\ub294 \uacbd\uc6b0)\u201c<\/li>\n\n\n\n<li>Windows: \ub124\ud2b8\uc6cc\ud06c \uc5b4\ub311\ud130 \uc18d\uc131 \u2192 \u201c\uc778\ud130\ub137 \ud504\ub85c\ud1a0\ucf5c \ubc84\uc804 6 (TCP\/IPv6)\u201d \uccb4\ud06c \ud574\uc81c <code>Linux: \ub2e4\uc74c\uc744 \ucd94\uac00<\/code> net.ipv6.conf.all.disable_ipv6 = 1 <code>\/etc\/sysctl.conf<\/code><\/li>\n\n\n\n<li>macOS: \uc2dc\uc2a4\ud15c \uc124\uc815 \u2192 \ub124\ud2b8\uc6cc\ud06c \u2192 \uc5f0\uacb0 \u2192 TCP\/IP \u2192 IPv6 \uad6c\uc131 \u2192 \ub9c1\ud06c \ub85c\uceec\ub9cc<\/li>\n<\/ul>\n\n\n\n<p><strong>\uc635\uc158 2: IPv4 \uc6b0\uc120<\/strong> IPv6\ub97c \uc644\uc804\ud788 \ube44\ud65c\uc131\ud654\ud558\uc9c0 \uc54a\uace0 \u2014 Linux\uc5d0\uc11c\ub294 <code>\/etc\/gai.conf<\/code> \ub97c \ud3b8\uc9d1\ud558\uace0 <code>\uc120\ud638\ub3c4 ::ffff:0:0\/96 100<\/code>.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"vpn\">\ub2e8\uacc4 6: VPN, \uc548\ud2f0\ubc14\uc774\ub7ec\uc2a4 \ubc0f \uc720\ub839 \uc5b4\ub311\ud130 \ud655\uc778<\/h2>\n\n<h3 class=\"wp-block-heading\" id=\"vpn-and-proxy-dns-interference\">\ub97c \uc8fc\uc11d \ud574\uc81c\ud558\uc2ed\uc2dc\uc624.<\/h3>\n\n\n<p>VPN \ubc0f \ud504\ub85d\uc2dc DNS \uac04\uc12d<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>VPN\uc740 \uc885\uc885 DNS\ub97c \uc790\uccb4 \uc11c\ubc84\ub97c \ud1b5\ud574 \ub77c\uc6b0\ud305\ud558\uc5ec \ub85c\uceec \ud574\uc11d\uae30\ubcf4\ub2e4 \ub290\ub9b4 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc77c\ubd80 VPN\uc740 \ud130\ub110 \uc678\ubd80\ub85c DNS \ucffc\ub9ac\ub97c \ub204\ucd9c\ud558\uc5ec \uc77c\uad00\ub418\uc9c0 \uc54a\uc740 \ub3d9\uc791\uc744 \ucd08\ub798\ud569\ub2c8\ub2e4. \uc9c4\ub2e8\ud558\ub824\uba74: <strong>VPN\uc5d0 \uc5f0\uacb0\ub41c \uc0c1\ud0dc\uc5d0\uc11c<\/strong> dnsleaktest.com.<\/li>\n\n\n\n<li>\uc744 \ubc29\ubb38\ud558\uc5ec DNS \ub204\ucd9c\uc744 \ud655\uc778\ud558\uc2ed\uc2dc\uc624.<\/li>\n\n\n\n<li>VPN\uc744 \uc77c\uc2dc\uc801\uc73c\ub85c \uc5f0\uacb0 \ud574\uc81c\ud558\uace0 DNS \uc18d\ub3c4\ub97c \ud14c\uc2a4\ud2b8\ud558\uc2ed\uc2dc\uc624. VPN \uc5c6\uc774 \ub354 \ube60\ub974\uba74, VPN\uc758 DNS\uac00 \ubcd1\ubaa9\uc785\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n<h3 class=\"wp-block-heading\" id=\"antivirus-firewall-dns-filtering\">\ub9ce\uc740 VPN\uc740 \uc0ac\uc6a9\uc790 \uc815\uc758 DNS \uc11c\ubc84\ub97c \uad6c\uc131\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4 \u2014 VPN \uc81c\uacf5\uc790\uc758 DNS \ub300\uc2e0 Cloudflare \ub610\ub294 Google\uc744 \uc0ac\uc6a9\ud558\uc2ed\uc2dc\uc624.<\/h3>\n\n\n<p>\uc548\ud2f0\ubc14\uc774\ub7ec\uc2a4 \/ \ubc29\ud654\ubcbd DNS \ud544\ud130\ub9c1<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uc77c\ubd80 \uc548\ud2f0\ubc14\uc774\ub7ec\uc2a4 \uc18c\ud504\ud2b8\uc6e8\uc5b4 (Norton, Kaspersky, Bitdefender)\ub294 DNS \ucffc\ub9ac\ub97c \uac00\ub85c\ucc44\uace0 \ud544\ud130\ub9c1\ud558\uc5ec \uc9c0\uc5f0\uc744 \ucd94\uac00\ud569\ub2c8\ub2e4. \ubcf4\uc548 \ubc29\ud654\ubcbd\uc740 \ub610\ud55c \uc54c \uc218 \uc5c6\ub294 \uc11c\ubc84\ub85c\uc758 DNS \ud2b8\ub798\ud53d\uc744 \ucc28\ub2e8\ud558\uac70\ub098 \uc81c\ud55c\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ud14c\uc2a4\ud2b8\ud558\ub824\uba74:.<\/li>\n\n\n\n<li>\uc548\ud2f0\ubc14\uc774\ub7ec\uc2a4 \uc6f9 \ubcf4\ud638\ub97c \uc77c\uc2dc\uc801\uc73c\ub85c \ube44\ud65c\uc131\ud654\ud558\uace0 DNS \uc18d\ub3c4\ub97c \ud14c\uc2a4\ud2b8\ud558\uc2ed\uc2dc\uc624.<\/li>\n\n\n\n<li>\ubc29\ud654\ubcbd \uaddc\uce59\uc5d0\uc11c DNS \uad00\ub828 \ucc28\ub2e8 (\uc544\uc6c3\ubc14\uc6b4\ub4dc \ud3ec\ud2b8 53 \ub610\ub294 853)\uc744 \ud655\uc778\ud558\uc2ed\uc2dc\uc624.<\/li>\n<\/ul>\n\n\n<h3 class=\"wp-block-heading\" id=\"ghost-network-adapters\">\uc548\ud2f0\ubc14\uc774\ub7ec\uc2a4\uac00 \ube44\ud65c\uc131\ud654\ub41c \uc0c1\ud0dc\uc5d0\uc11c DNS\uac00 \ub354 \ube60\ub974\uba74, \uc120\ud638\ud558\ub294 DNS \uc11c\ubc84\uc5d0 \ub300\ud55c \uc608\uc678\ub97c \ucd94\uac00\ud558\uc2ed\uc2dc\uc624.<\/h3>\n\n\n<p>\uc720\ub839 \ub124\ud2b8\uc6cc\ud06c \uc5b4\ub311\ud130.<\/p>\n\n\n\n<p>VPN \uc18c\ud504\ud2b8\uc6e8\uc5b4, \uac00\uc0c1 \uba38\uc2e0 (VMware, VirtualBox), Docker\uc758 \uc624\ub798\ub41c \ub610\ub294 \uc720\ub839 \ub124\ud2b8\uc6cc\ud06c \uc5b4\ub311\ud130\ub294 \ud574\uc11d\uc744 \ubc29\ud574\ud558\ub294 \uc624\ub798\ub41c DNS \uad6c\uc131\uc744 \ubcf4\uc720\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. Windows\ub294 \ud2b9\ud788 \uc774 \ubb38\uc81c\uc5d0 \ucde8\uc57d\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><samp>Windows\uc5d0\uc11c \uc218\uc815\ud558\ub824\uba74:<br># \uc7a5\uce58 \uad00\ub9ac\uc790\uc5d0\uc11c \uc228\uaca8\uc9c4 \uc7a5\uce58 \ud45c\uc2dc<br># \uad00\ub9ac\uc790 \uad8c\ud55c\uc73c\ub85c CMD \uc5f4\uae30:<br>set devmgr_show_nonpresent_devices=1<br><br>devmgmt.msc<br># \uc7a5\uce58 \uad00\ub9ac\uc790\uc5d0\uc11c: \ubcf4\uae30 \u2192 \uc228\uaca8\uc9c4 \uc7a5\uce58 \ud45c\uc2dc<\/samp><\/p>\n<\/blockquote>\n\n\n<h2 class=\"wp-block-heading\" id=\"doh\">\ub2e8\uacc4 7: DNS over HTTPS (DoH) \uad6c\uc131<\/h2>\n\n\n<p># \ub124\ud2b8\uc6cc\ud06c \uc5b4\ub311\ud130 \uc544\ub798\uc5d0\uc11c \ud68c\uc0c9\uc73c\ub85c \ud45c\uc2dc\ub41c\/\uc720\ub839 \uc5b4\ub311\ud130 \uc81c\uac70.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"benefits\">DNS over HTTPS (DoH)\ub294 DNS \ucffc\ub9ac\ub97c HTTPS \ub0b4\uc5d0 \uc554\ud638\ud654\ud558\uc5ec ISP \uc2a4\ub204\ud551, DNS \uc2a4\ud478\ud551 \ubc0f \uc911\uac04\uc790 \uacf5\uaca9\uc744 \ubc29\uc9c0\ud569\ub2c8\ub2e4. \uadf8\ub7ec\ub098 \uc798\ubabb \uad6c\uc131\ub418\uba74 \ubb38\uc81c\ub97c \uc77c\uc73c\ud0ac \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/h3>\n\n\n<ul class=\"wp-block-list\">\n<li>\uc774\uc810.<\/li>\n\n\n\n<li>DNS \ud2b8\ub798\ud53d\uc744 \uc554\ud638\ud654\ud569\ub2c8\ub2e4 \u2014 ISP \ubc0f \ub124\ud2b8\uc6cc\ud06c \uad00\ub9ac\uc790\ub294 DNS \ucffc\ub9ac\ub97c \ubcfc \uc218 \uc5c6\uc2b5\ub2c8\ub2e4.<\/li>\n\n\n\n<li>DNS \uc2a4\ud478\ud551 \ubc0f \uce90\uc2dc \uc911\ub3c5 \uacf5\uaca9\uc744 \ubc29\uc9c0\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n<h3 class=\"wp-block-heading\" id=\"potential-issues\">\ud3ec\ud2b8 443 (\ud45c\uc900 HTTPS)\uc744 \uc0ac\uc6a9\ud558\ubbc0\ub85c \ubc29\ud654\ubcbd\uc5d0 \uc758\ud574 \ucc28\ub2e8\ub418\ub294 \uacbd\uc6b0\uac00 \ub4dc\ubb45\ub2c8\ub2e4.<\/h3>\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\uc7a0\uc7ac\uc801 \ubb38\uc81c<\/strong> \ucd94\uac00 \uc9c0\uc5f0:.<\/li>\n\n\n\n<li><strong>HTTPS\/TLS \ud578\ub4dc\uc170\uc774\ud06c\ub294 \uccab \uc5f0\uacb0\uc5d0 \uc624\ubc84\ud5e4\ub4dc\ub97c \ucd94\uac00\ud569\ub2c8\ub2e4. \uc774\ud6c4 \ucffc\ub9ac\ub294 \uc5f0\uacb0 \uc7ac\uc0ac\uc6a9\uc73c\ub85c \uc778\ud574 \ub354 \ube60\ub985\ub2c8\ub2e4.<\/strong> \ub85c\uceec DNS \ud544\ud130\uc640\uc758 \ucda9\ub3cc:.<\/li>\n\n\n\n<li><strong>DoH\ub294 Pi-hole, \ub85c\uceec DNS \uc11c\ubc84 \ubc0f \ubd80\ubaa8 \ud1b5\uc81c\ub97c \uc6b0\ud68c\ud569\ub2c8\ub2e4.<\/strong> VPN \ucda9\ub3cc:.<\/li>\n\n\n\n<li><strong>DoH\ub294 \uc62c\ubc14\ub974\uac8c \uad6c\uc131\ub418\uc9c0 \uc54a\uc73c\uba74 VPN \ud130\ub110 \uc678\ubd80\ub85c DNS\ub97c \ub77c\uc6b0\ud305\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/strong> \ubd84\ud560 DNS \ubb38\uc81c:.<\/li>\n\n\n\n<li><strong>\ub0b4\ubd80 \ub9ac\uc18c\uc2a4\ub97c \uc704\ud55c \ub0b4\ubd80 DNS\ub97c \uc0ac\uc6a9\ud558\ub294 \uae30\uc5c5 \ud658\uacbd\uc740 DoH\uac00 \ud65c\uc131\ud654\ub418\uba74 \uc911\ub2e8\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/strong> \ube0c\ub77c\uc6b0\uc800 \uc624\ubc84\ub77c\uc774\ub4dc:.<\/li>\n<\/ul>\n\n\n<h3 class=\"wp-block-heading\" id=\"how-to-enable-doh\">Chrome, Firefox, Edge\ub294 \ub0b4\uc7a5\ub41c DoH\ub85c OS DNS \uc124\uc815\uc744 \uc870\uc6a9\ud788 \uc624\ubc84\ub77c\uc774\ub4dc\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/h3>\n\n\n<p><strong>DoH \ud65c\uc131\ud654 \ubc29\ubc95<\/strong> Windows 11:\u201c<\/p>\n\n\n\n<p><strong>\uc124\uc815 \u2192 \ub124\ud2b8\uc6cc\ud06c \u2192 \uc774\ub354\ub137\/Wi-Fi \u2192 DNS \u2192 \u201c\uc120\ud638 DNS \uc554\ud638\ud654\u201d\ub97c \u201c\uc554\ud638\ud654\ub9cc (DNS over HTTPS)\u201d \ub610\ub294 \u201c\uc554\ud638\ud654 \uc120\ud638, \ube44\uc554\ud638\ud654 \ud5c8\uc6a9\u201d\uc73c\ub85c \uc124\uc815\ud558\uc2ed\uc2dc\uc624.<\/strong> Chrome\/Edge:.<\/p>\n\n\n\n<p><strong>\uc124\uc815 \u2192 \uac1c\uc778\uc815\ubcf4 \u2192 \u201c\ubcf4\uc548 DNS \uc0ac\uc6a9\u201d \u2192 \uc81c\uacf5\uc790 \uc120\ud0dd (Cloudflare, Google \ub4f1).<\/strong> Firefox:.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"how-to-disable-doh-when-troubleshooting\">DoH \ube44\ud65c\uc131\ud654 \ubc29\ubc95 (\ubb38\uc81c \ud574\uacb0 \uc2dc)<\/h3>\n\n\n<ul class=\"wp-block-list\">\n<li>Windows 11: DNS \uc554\ud638\ud654\ub97c \u201c\uc554\ud638\ud654\ub418\uc9c0 \uc54a\uc74c\u201d\uc73c\ub85c \ub418\ub3cc\ub9ac\uae30.\u201d<\/li>\n\n\n\n<li>Chrome\/Edge: \u201c\ubcf4\uc548 DNS \uc0ac\uc6a9\u201d\uc744 \ub044\uae30\ub85c \uc804\ud658.<\/li>\n\n\n\n<li>Firefox: \u201c\ub044\uae30\u201d\ub85c \uc124\uc815\ud558\uac70\ub098 \uc785\ub825 <code>about:config<\/code> \ubc0f \uc124\uc815 <code>network.trr.mode = 5<\/code>.<\/li>\n<\/ul>\n\n\n<h3 class=\"wp-block-heading\" id=\"dns-over-tls-dot-vs-doh\">TLS\ub97c \ud1b5\ud55c DNS (DoT) vs DoH<\/h3>\n\n\n<p>DoT\ub294 DNS\ub97c \uc804\uc6a9 \ud3ec\ud2b8(853)\uc5d0\uc11c \uc554\ud638\ud654\ud558\ub294 \ub300\uc548\uc73c\ub85c, \ud3ec\ud2b8 443\uc5d0\uc11c HTTPS \ud2b8\ub798\ud53d\uacfc \ud63c\ud569\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. DoT\ub294 \uc5d4\ud130\ud504\ub77c\uc774\uc988 \ub124\ud2b8\uc6cc\ud06c\uc5d0\uc11c \uc2dd\ubcc4 \ubc0f \ucc28\ub2e8\/\uad00\ub9ac\ud558\uae30 \ub354 \uc27d\uc2b5\ub2c8\ub2e4. DoH\ub294 \uc77c\ubc18 \uc6f9 \ud2b8\ub798\ud53d\uacfc \ud63c\ud569\ub418\uc5b4 \ud544\ud130\ub9c1\uc774 \ub354 \uc5b4\ub835\uc2b5\ub2c8\ub2e4. \uac00\uc815 \uc0ac\uc6a9\uc790\uc5d0\uac8c\ub294 \ub458 \ub2e4 \uc791\ub3d9\ud569\ub2c8\ub2e4. \uac00\uc2dc\uc131\uc774 \ud544\uc694\ud55c \ub124\ud2b8\uc6cc\ud06c \uad00\ub9ac\uc790\uc5d0\uac8c\ub294 \uc77c\ubc18\uc801\uc73c\ub85c DoT\uac00 \uc120\ud638\ub429\ub2c8\ub2e4.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"local-cache\">\ub2e8\uacc4 8: \ub85c\uceec DNS \uce90\uc2dc \uc11c\ubc84 \uc2e4\ud589<\/h2>\n\n\n<p>\uace0\uae09 \uc0ac\uc6a9\uc790 \ubc0f \ub124\ud2b8\uc6cc\ud06c \uad00\ub9ac\uc790\uc5d0\uac8c\ub294 \ub85c\uceec \uce90\uc2f1 DNS \ub9ac\uc878\ubc84\ub97c \uc2e4\ud589\ud558\uba74 \ubc18\ubcf5 \ucffc\ub9ac\uc5d0 \ub300\ud55c \uc655\ubcf5\uc744 \uc644\uc804\ud788 \uc81c\uac70\ud569\ub2c8\ub2e4. \ub9e4\ubc88 \uc6d0\uaca9 DNS \uc11c\ubc84\ub97c \ud638\ucd9c\ud558\ub294 \ub300\uc2e0 \ub85c\uceec \uce90\uc2dc\uac00 \uc989\uc2dc \uc751\ub2f5\ud569\ub2c8\ub2e4.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"popular-options\">\uc778\uae30 \uc788\ub294 \uc635\uc158<\/h3>\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\uc5b8\ubc14\uc6b4\ub4dc<\/strong> \u2014 \uac80\uc99d, \uc7ac\uadc0, \uce90\uc2f1 DNS \ub9ac\uc878\ubc84. \ubaa8\ub4e0 \uae30\ub85d\uc744 \ub2e8\uc77c \uacf5\uc6a9 DNS \uc11c\ubc84\uac00 \uac16\uc9c0 \uc54a\ub3c4\ub85d \ubc29\uc9c0\ud569\ub2c8\ub2e4. \uc5c5\uc2a4\ud2b8\ub9bc \uc554\ud638\ud654\ub97c \uc704\ud55c DoT\ub97c \uc9c0\uc6d0\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong>dnsmasq<\/strong> \u2014 \uacbd\ub7c9 DNS \ud3ec\uc6cc\ub354 \ubc0f DHCP \uc11c\ubc84. Linux \ub77c\uc6b0\ud130\uc5d0\uc11c \uc27d\uac8c \uc124\uc815\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong>\ud30c\uc774-\ud640<\/strong> \u2014 \ub124\ud2b8\uc6cc\ud06c \uc804\uccb4 \uad11\uace0 \ucc28\ub2e8\uae30\ub85c DNS \uce90\uc2dc \uc5ed\ud560\ub3c4 \ud569\ub2c8\ub2e4. DNS \uc218\uc900\uc5d0\uc11c \uad11\uace0 \ubc0f \ucd94\uc801\uae30\ub97c \ucc28\ub2e8\ud558\uc5ec \ubaa8\ub4e0 \uc7a5\uce58\uc5d0 \ub300\ud55c \ud0c0\uc0ac DNS \uc870\ud68c\ub97c \uc904\uc785\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n<h3 class=\"wp-block-heading\" id=\"quick-setup-unbound-on-linux\">\ube60\ub978 \uc124\uc815: Linux\uc5d0\uc11c Unbound<\/h3>\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><samp># Unbound \uc124\uce58<br>sudo apt \uc124\uce58 unbound<br><br># \uae30\ubcf8 \uad6c\uc131: \/etc\/unbound\/unbound.conf<br>\uc11c\ubc84:<br>&nbsp;&nbsp;&nbsp;&nbsp;\uc778\ud130\ud398\uc774\uc2a4: 127.0.0.1<br>&nbsp;&nbsp;&nbsp;&nbsp;\ud3ec\ud2b8: 53<br>&nbsp;&nbsp;&nbsp;&nbsp;\uc561\uc138\uc2a4 \uc81c\uc5b4: 127.0.0.0\/8 \ud5c8\uc6a9<br>&nbsp;&nbsp;&nbsp;&nbsp;\uce90\uc2dc \ucd5c\uc18c TTL: 300<br>&nbsp;&nbsp;&nbsp;&nbsp;\uce90\uc2dc \ucd5c\ub300 TTL: 86400<br>&nbsp;&nbsp;&nbsp;&nbsp;\uc0ac\uc804 \uac00\uc838\uc624\uae30: \uc608<br><br># Cloudflare\ub85c TLS\ub97c \ud1b5\ud574 \ud3ec\uc6cc\ub4dc<br>\ud3ec\uc6cc\ub4dc \uc874:<br>&nbsp;&nbsp;&nbsp;&nbsp;\uc774\ub984: \u201c.\u201d<br>&nbsp;&nbsp;&nbsp;&nbsp;\ud3ec\uc6cc\ub4dc TLS \uc5c5\uc2a4\ud2b8\ub9bc: \uc608<br>&nbsp;&nbsp;&nbsp;&nbsp;\ud3ec\uc6cc\ub4dc \uc8fc\uc18c: 1.1.1.1@853<br>&nbsp;&nbsp;&nbsp;&nbsp;\ud3ec\uc6cc\ub4dc \uc8fc\uc18c: 1.0.0.1@853<br><br># \uc2dc\uc791 \ubc0f \ud65c\uc131\ud654<br>sudo systemctl \ud65c\uc131\ud654 unbound<br>sudo systemctl \uc2dc\uc791 unbound<br><br># \uc2dc\uc2a4\ud15c\uc744 \ub85c\uceec \ub9ac\uc878\ubc84\ub85c \uc124\uc815<br># \/etc\/resolv.conf \ud3b8\uc9d1:<br>\ub124\uc784\uc11c\ubc84 127.0.0.1<\/samp><\/p>\n<\/blockquote>\n\n\n\n<p>AI CRM <code>\uc0ac\uc804 \uac00\uc838\uc624\uae30: \uc608<\/code>, Unbound\ub294 \uc790\uc8fc \uc561\uc138\uc2a4\ub418\ub294 \uae30\ub85d\uc744 \ub9cc\ub8cc \uc804\uc5d0 \uc0c8\ub85c \uace0\uce58\ubbc0\ub85c \uac70\uc758 \ucf5c\ub4dc \uce90\uc2dc \ubbf8\uc2a4\ub97c \uacbd\ud5d8\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"browser\">\ub2e8\uacc4 9: \ube0c\ub77c\uc6b0\uc800\ubcc4 DNS \ubb38\uc81c \uc218\uc815<\/h2>\n\n\n<p>\ube0c\ub77c\uc6b0\uc800\ub294 OS \uc124\uc815\uc744 \ubb34\uc2dc\ud560 \uc218 \uc788\ub294 \uc790\uccb4 DNS \ub3d9\uc791\uc744 \uac00\uc9c0\uace0 \uc788\uc2b5\ub2c8\ub2e4:<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"chrome-edge\">\ud06c\ub86c \/ \uc5e3\uc9c0<\/h3>\n\n\n<ul class=\"wp-block-list\">\n<li>\ub0b4\uc7a5 \u201c\ubcf4\uc548 DNS\u201d (DoH)\ub294 OS \uc218\uc900 DNS\ub97c \ubb34\uc2dc\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ud655\uc778: \uc124\uc815 \u2192 \uac1c\uc778\uc815\ubcf4 \u2192 \u201c\ubcf4\uc548 DNS \uc0ac\uc6a9.\u201d<\/li>\n\n\n\n<li>Chrome\uc740 \uc790\uccb4 DNS \uce90\uc2dc\ub97c \uc720\uc9c0\ud569\ub2c8\ub2e4. \ub2e4\uc74c\uc5d0\uc11c \uc9c0\uc6b0\uc2ed\uc2dc\uc624 <code>chrome:\/\/net-internals\/#dns<\/code> \u2192 \u201c\ud638\uc2a4\ud2b8 \uce90\uc2dc \uc9c0\uc6b0\uae30.\u201d<\/li>\n\n\n\n<li>\uc18c\ucf13 \ud480\ub3c4 \uc9c0\uc6b0\uc2ed\uc2dc\uc624: <code>chrome:\/\/net-internals\/#sockets<\/code> \u2192 \u201c\uc18c\ucf13 \ud480 \ud50c\ub7ec\uc2dc.\u201d<\/li>\n<\/ul>\n\n\n<h3 class=\"wp-block-heading\" id=\"firefox\">\ud30c\uc774\uc5b4\ud3ed\uc2a4<\/h3>\n\n\n<ul class=\"wp-block-list\">\n<li>Firefox\ub294 \ubbf8\uad6d \uc0ac\uc6a9\uc790\uc5d0\uac8c \uae30\ubcf8\uc801\uc73c\ub85c Cloudflare DoH\ub97c \uc0ac\uc6a9\ud558\ub294 \uc790\uccb4 \uc2e0\ub8b0\ud560 \uc218 \uc788\ub294 \uc7ac\uadc0 \ub9ac\uc878\ubc84 (TRR)\ub97c \uac00\uc9c0\uace0 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub294 OS DNS \uc124\uc815\uc744 \uc644\uc804\ud788 \uc6b0\ud68c\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\uc0c1\ud0dc \ud655\uc778: <code>about:networking#dns<\/code> \uce90\uc2dc\ub41c DNS \ud56d\ubaa9\uacfc \ud65c\uc131 \ub9ac\uc878\ubc84\ub97c \ud655\uc778\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li>TRR \ube44\ud65c\uc131\ud654: \uc124\uc815 \u2192 \uac1c\uc778\uc815\ubcf4 \ubc0f \ubcf4\uc548 \u2192 HTTPS\ub97c \ud1b5\ud55c DNS \u2192 \ub044\uae30.<\/li>\n\n\n\n<li>\uc124\uc815\uc744 \ud1b5\ud574 \uac15\uc81c \ube44\ud65c\uc131\ud654: <code>about:config<\/code> \u2192 \uc124\uc815 <code>network.trr.mode<\/code> net.ipv6.conf.all.disable_ipv6 = 1 <code>5<\/code>.<\/li>\n<\/ul>\n\n\n<h3 class=\"wp-block-heading\" id=\"all-browsers\">\ubaa8\ub4e0 \ube0c\ub77c\uc6b0\uc800<\/h3>\n\n\n<ul class=\"wp-block-list\">\n<li>\ud655\uc7a5 \ud504\ub85c\uadf8\ub7a8 (\uad11\uace0 \ucc28\ub2e8\uae30, \uac1c\uc778\uc815\ubcf4 \ub3c4\uad6c)\uc740 DNS\ub97c \uac00\ub85c\ucc44\uace0 \ub9ac\ub514\ub809\uc158\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ud655\uc7a5 \ud504\ub85c\uadf8\ub7a8\uc744 \ube44\ud65c\uc131\ud654\ud55c \uc0c1\ud0dc\uc5d0\uc11c \uc2dc\ud06c\ub9bf\/\ud504\ub77c\uc774\ube57 \ubaa8\ub4dc\uc5d0\uc11c \ud14c\uc2a4\ud2b8\ud558\uc2ed\uc2dc\uc624.<\/li>\n\n\n\n<li>DNS\uac00 \uc791\ub3d9\ud558\uc9c0\ub9cc <code>\ub514\uadf8<\/code> \ub610\ub294 <code>\uc5d4\uc5d0\uc2a4\ub8e9\uc5c5<\/code> \ube0c\ub77c\uc6b0\uc800\uac00 \ub290\ub9ac\ub2e4\uba74 \ubb38\uc81c\ub294 \uc2dc\uc2a4\ud15c DNS\uac00 \uc544\ub2cc \ube0c\ub77c\uc6b0\uc800 \uc218\uc900\uc785\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n<h2 class=\"wp-block-heading\" id=\"optimize-records\">\ub2e8\uacc4 10: DNS \ub808\ucf54\ub4dc \ucd5c\uc801\ud654 (\uc6f9\uc0ac\uc774\ud2b8 \uc18c\uc720\uc790)<\/h2>\n\n\n<p>\uc6f9\uc0ac\uc774\ud2b8\ub97c \uad00\ub9ac\ud558\uace0 \ubc29\ubb38\uc790\uc5d0\uac8c DNS\uac00 \ub290\ub9ac\ub2e4\uba74 \ub2e4\uc74c \ucd5c\uc801\ud654\uac00 \uc801\uc6a9\ub429\ub2c8\ub2e4:<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"reduce-and-clean-up-records\">\uae30\ub85d \uc904\uc774\uae30 \ubc0f \uc815\ub9ac<\/h3>\n\n\n<p>\uc0ac\uc6a9\ud558\uc9c0 \uc54a\ub294 A, CNAME, TXT, MX \uae30\ub85d\uc744 \uc81c\uac70\ud558\uc2ed\uc2dc\uc624. \ubaa8\ub4e0 \ucd94\uac00 \uae30\ub85d\uc740 \ud574\uc11d \uc2dc \uc624\ubc84\ud5e4\ub4dc\ub97c \ucd94\uac00\ud569\ub2c8\ub2e4. \ubd84\uae30\ubcc4\ub85c DNS \uc874 \ud30c\uc77c\uc744 \uac10\uc0ac\ud558\uc2ed\uc2dc\uc624.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"eliminate-cname-chaining\">CNAME \uccb4\uc778 \uc81c\uac70<\/h3>\n\n\n<p>CNAME \u2192 CNAME \u2192 A \uae30\ub85d \ub300\uc2e0 \ub3c4\uba54\uc778\uc744 \ucd5c\uc885 IP\ub85c \uc9c1\uc811 A \uae30\ub85d\uc744 \ud1b5\ud574 \uc9c0\uc815\ud558\uc2ed\uc2dc\uc624. \ub9ce\uc740 DNS \uc81c\uacf5\uc5c5\uccb4\ub294 \ub610\ud55c <strong>CNAME \ud50c\ub798\ud2b8\ub2dd<\/strong> (ALIAS \uae30\ub85d\uc774\ub77c\uace0\ub3c4 \ud568)\uc744 \uc9c0\uc6d0\ud558\uc5ec \uccb4\uc778\uc744 \uc11c\ubc84 \uce21\uc5d0\uc11c \ud574\uc11d\ud558\uace0 \ub2e8\uc77c \ucffc\ub9ac\ub85c IP\ub97c \ubc18\ud658\ud569\ub2c8\ub2e4.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"set-appropriate-ttl-values\">\uc801\uc808\ud55c TTL \uac12 \uc124\uc815<\/h3>\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\uc548\uc815\uc801\uc778 \uae30\ub85d:<\/strong> \uce90\uc2f1 \uc774\uc810\uc744 \uadf9\ub300\ud654\ud558\uae30 \uc704\ud574 \ub354 \ub192\uc740 TTL (3600\u201386400\ucd08)\uc744 \uc0ac\uc6a9\ud558\uc2ed\uc2dc\uc624.<\/li>\n\n\n\n<li><strong>\uc790\uc8fc \ubcc0\uacbd\ub418\ub294 \uae30\ub85d:<\/strong> 300\u2013600\ucd08 (5\u201310\ubd84)\uc758 TTL\uc744 \uc0ac\uc6a9\ud558\uc2ed\uc2dc\uc624.<\/li>\n\n\n\n<li>\uae30\ub85d\uc774 \uc808\ub300 \ubcc0\uacbd\ub418\uc9c0 \uc54a\ub294 \uacbd\uc6b0\uac00 \uc544\ub2c8\ub77c\uba74 TTL\uc744 86400 (24\uc2dc\uac04)\uc73c\ub85c \uc124\uc815\ud558\uc9c0 \ub9c8\uc2ed\uc2dc\uc624. \uc774\ub294 \uc5c5\ub370\uc774\ud2b8 \uc804\ud30c\ub97c \uc9c0\uc5f0\uc2dc\ud0b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n<h3 class=\"wp-block-heading\" id=\"dnssec-considerations\">DNSSEC \uace0\ub824\uc0ac\ud56d<\/h3>\n\n\n<p>DNSSEC\ub294 DNS \uc751\ub2f5\uc5d0 \uc554\ud638\ud654 \uc11c\uba85 \uac80\uc99d\uc744 \ucd94\uac00\ud558\uc5ec \uce90\uc2dc \uc911\ub3c5 \ubc0f \uc2a4\ud478\ud551\uc744 \ubc29\uc9c0\ud569\ub2c8\ub2e4. \uadf8\ub7ec\ub098 \uac01 \uc870\ud68c\uc5d0 \ucc98\ub9ac \uc2dc\uac04\uc744 \ucd94\uac00\ud569\ub2c8\ub2e4. \ubcf4\uc548\uc774 \uc6b0\uc120\uc774\ub77c\uba74 DNSSEC\ub97c \ud65c\uc131\ud654\ud558\uc2ed\uc2dc\uc624; \uc774\ub294 \ud2b9\ud788 \ub290\ub9b0 \uad8c\uc704 \uc788\ub294 \ub124\uc784\uc11c\ubc84\uc5d0\uc11c \ud574\uc11d \uc2dc\uac04\uc744 \uc57d\uac04 \uc99d\uac00\uc2dc\ud0ac \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"use-a-premium-dns-provider-cdn\">\ud504\ub9ac\ubbf8\uc5c4 DNS \uc81c\uacf5\uc5c5\uccb4 \/ CDN \uc0ac\uc6a9<\/h3>\n\n\n<p>\ub3c4\uba54\uc778 \ub4f1\ub85d \uae30\uad00\uc758 \ubb34\ub8cc DNS\ub294 \uc77c\ubc18\uc801\uc73c\ub85c \ub290\ub9bd\ub2c8\ub2e4. \ud504\ub9ac\ubbf8\uc5c4 DNS \uc81c\uacf5\uc5c5\uccb4 (Cloudflare, AWS Route 53, Dyn, DNS Made Easy)\ub294 \uc800\uc9c0\uc5f0 \uc751\ub2f5\uc744 \uc704\ud574 \uc124\uacc4\ub41c \ub300\uaddc\ubaa8, \uc804 \uc138\uacc4\uc801\uc73c\ub85c \ubd84\uc0b0\ub41c \uc560\ub2c8\uce90\uc2a4\ud2b8 \uc778\ud504\ub77c\ub97c \uac00\uc9c0\uace0 \uc788\uc2b5\ub2c8\ub2e4. Cloudflare \ub610\ub294 Akamai\uc640 \uac19\uc740 CDN\uc740 \uc790\uccb4 DNS \uc778\ud504\ub77c\ub97c \uac00\uc9c0\uace0 \uc788\uc73c\uba70 \uc804 \uc138\uacc4\uc801\uc73c\ub85c \ubd84\uc0b0\ub41c \uc811\uc18d \uc9c0\uc810\uc744 \uac00\uc9c0\uace0 \uc788\uc5b4 \uc804 \uc138\uacc4 \uc0ac\uc6a9\uc790\uc5d0 \ub300\ud55c \uc870\ud68c \uc2dc\uac04\uc744 \ub2e8\ucd95\ud569\ub2c8\ub2e4.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"reduce-domains\">\ub2e8\uacc4 11: \uc11c\ub4dc\ud30c\ud2f0 \ub3c4\uba54\uc778 \uc904\uc774\uae30 (\uc6f9\uc0ac\uc774\ud2b8 \uc18c\uc720\uc790)<\/h2>\n\n\n<p>\uc6f9\uc0ac\uc774\ud2b8\uac00 \ub85c\ub4dc\ud558\ub294 \uac01 \uace0\uc720\ud55c \ud0c0\uc0ac \ub3c4\uba54\uc778\uc740 \ubcc4\ub3c4\uc758 DNS \uc870\ud68c\uac00 \ud544\uc694\ud569\ub2c8\ub2e4. \uc774\ub294 \ube60\ub974\uac8c \ub204\uc801\ub429\ub2c8\ub2e4 \u2014 7\uac1c\uc758 \uc678\ubd80 \ub3c4\uba54\uc778\uc5d0\uc11c \ub9ac\uc18c\uc2a4\ub97c \ub85c\ub4dc\ud558\ub294 \uc0ac\uc774\ud2b8\ub294 DNS \uc2dc\uac04\ub9cc\uc73c\ub85c 1\ucd08 \uc774\uc0c1\uc744 \ub204\uc801\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"how-to-reduce\">\uc904\uc774\ub294 \ubc29\ubc95<\/h3>\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\uc678\ubd80 \ub9ac\uc18c\uc2a4 \uac10\uc0ac:<\/strong> \ube0c\ub77c\uc6b0\uc800 \uac1c\ubc1c\uc790 \ub3c4\uad6c (\ub124\ud2b8\uc6cc\ud06c \ud0ed) \ub610\ub294 WebPageTest\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc0ac\uc774\ud2b8\uac00 \ud638\ucd9c\ud558\ub294 \ubaa8\ub4e0 \uace0\uc720\ud55c \ub3c4\uba54\uc778\uc744 \uc2dd\ubcc4\ud558\uc2ed\uc2dc\uc624.<\/li>\n\n\n\n<li><strong>\uac00\ub2a5\ud55c \uacbd\uc6b0 \uc790\uccb4 \ud638\uc2a4\ud305:<\/strong> \ud0c0\uc0ac \uae00\uaf34, \uc2a4\ud06c\ub9bd\ud2b8, \uc790\uc0b0\uc744 \ub2e4\uc6b4\ub85c\ub4dc\ud558\uc5ec \uc6d0\ubcf8 \uc11c\ubc84 \ub610\ub294 CDN\uc5d0 \ud638\uc2a4\ud305\ud558\uc2ed\uc2dc\uc624. \uc774\ub294 \ud574\ub2f9 DNS \uc870\ud68c\ub97c \uc644\uc804\ud788 \uc81c\uac70\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong>CDN \ub3c4\uba54\uc778 \ud1b5\ud569:<\/strong> \uc5ec\ub7ec \uc678\ubd80 \ud638\uc2a4\ud2b8 \ub300\uc2e0 \ub2e8\uc77c CDN \ud558\uc704 \ub3c4\uba54\uc778\uc744 \uc0ac\uc6a9\ud558\uc2ed\uc2dc\uc624.<\/li>\n\n\n\n<li><strong>\uc0ac\uc6a9\ud558\uc9c0 \uc54a\ub294 \ud50c\ub7ec\uadf8\uc778 \ubc0f \ucd94\uc801\uae30 \uc81c\uac70:<\/strong> \uc678\ubd80 JavaScript\ub97c \ub85c\ub4dc\ud558\ub294 \uac01 \ud50c\ub7ec\uadf8\uc778\uc740 \uc801\uc5b4\ub3c4 \ud558\ub098\uc758 DNS \uc870\ud68c\uc640 \uc2a4\ud06c\ub9bd\ud2b8 \uc790\uccb4\ub97c \ucd94\uac00\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n<h3 class=\"wp-block-heading\" id=\"defer-noncritical-javascript\">\ube44\ud544\uc218 JavaScript \uc9c0\uc5f0<\/h3>\n\n\n<p>\ud0c0\uc0ac JavaScript\ub294 \uc885\uc885 \ucd94\uac00 \uc678\ubd80 \ub3c4\uba54\uc778\uc744 \ub85c\ub4dc\ud569\ub2c8\ub2e4. \ube44\ud544\uc218 JS\ub97c \uc9c0\uc5f0\ud558\uba74 \uc774\ub7ec\ud55c DNS \uc870\ud68c\uac00 \uba54\uc778 \ud398\uc774\uc9c0 \ub80c\ub354\ub9c1 \ud6c4\ub85c \uc9c0\uc5f0\ub429\ub2c8\ub2e4:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><samp>&lt;!&#8211; Defer non-critical third-party scripts &#8211;&gt;<br>&lt;script src=&#8221;https:\/\/analytics.example.com\/tracker.js&#8221; defer&gt;&lt;\/script&gt;<br><br>&lt;!&#8211; Async for scripts that don&#8217;t depend on page load order &#8211;&gt;<br>&lt;script src=&#8221;https:\/\/ads.example.com\/ad.js&#8221; async&gt;&lt;\/script&gt;<\/samp><\/p>\n<\/blockquote>\n\n\n\n<p>\uc0ac\uc6a9 <code>\ub514\ud37c<\/code> \ub610\ub294 <code>\uc5b4\uc2f1\ud06c<\/code> \uc774\ub7ec\ud55c \uc2a4\ud06c\ub9bd\ud2b8\uac00 \uba54\uc778 \ud398\uc774\uc9c0 \ub80c\ub354\ub9c1\uc744 \ucc28\ub2e8\ud558\uc9c0 \uc54a\uc73c\uba74\uc11c \ub85c\ub4dc\ub418\ub3c4\ub85d \ud569\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ub3c4\uba54\uc778\uc5d0 \ub300\ud55c DNS \uc870\ud68c\ub294 \uc5ec\uc804\ud788 \ubc1c\uc0dd\ud558\uc9c0\ub9cc \uc0ac\uc6a9\uc790\uac00 \ucf58\ud150\uce20\ub97c \ubcf4\ub294 \uac83\uc744 \ucc28\ub2e8\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"prefetch\">\ub2e8\uacc4 12: DNS \ud504\ub9ac\ud328\uce6d \uad6c\ud604 (\uc6f9 \uac1c\ubc1c\uc790)<\/h2>\n\n\n<p>\ucd5c\uc2e0 \ube0c\ub77c\uc6b0\uc800\ub294 \uc9c0\uc6d0\ud569\ub2c8\ub2e4 <code>dns-\ud504\ub9ac\ud398\uce58<\/code> \uadf8\ub9ac\uace0 <code>\ud504\ub9ac\ucee4\ub125\ud2b8<\/code> \uc0ac\uc6a9\uc790\uac00 \ud544\uc694\ud558\uae30 \uc804\uc5d0 \ud0c0\uc0ac \ub3c4\uba54\uc778\uc5d0 \ub300\ud55c DNS\ub97c \ud574\uacb0\ud558\ub294 \ub9ac\uc18c\uc2a4 \ud78c\ud2b8:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><samp>&lt;!&#8211; DNS prefetch for non-critical third-party domains &#8211;&gt;<br>&lt;link rel=&#8221;dns-prefetch&#8221; href=&#8221;https:\/\/fonts.googleapis.com&#8221;&gt;<br>&lt;link rel=&#8221;dns-prefetch&#8221; href=&#8221;https:\/\/analytics.example.com&#8221;&gt;<br><br>&lt;!&#8211; Preconnect for critical third-party domains (DNS + TCP + TLS) &#8211;&gt;<br>&lt;link rel=&#8221;preconnect&#8221; href=&#8221;https:\/\/cdn.example.com&#8221;&gt;<br>&lt;link rel=&#8221;preconnect&#8221; href=&#8221;https:\/\/api.example.com&#8221;&gt;<\/samp><\/p>\n<\/blockquote>\n\n\n\n<p>\uc0ac\uc6a9 <code>\ud504\ub9ac\ucee4\ub125\ud2b8<\/code> \uac00\uc7a5 \uc911\uc694\ud55c \uc5f0\uacb0\uc5d0 \ub300\ud574 (DNS + TCP + TLS\ub97c \ucc98\ub9ac\ud569\ub2c8\ub2e4) \ubc0f <code>dns-\ud504\ub9ac\ud398\uce58<\/code> \ub2e4\ub978 \ubaa8\ub4e0 \uac83\uc5d0 \ub300\ud574. \ud504\ub9ac\ucee4\ub125\ud2b8\ub294 \uc5f0\uacb0\ub2f9 100\u2013500 ms\ub97c \uc808\uc57d\ud560 \uc218 \uc788\uc73c\uba70, DNS \ud504\ub9ac\ud398\uce58\ub294 20\u2013120 ms\ub97c \uc808\uc57d\ud569\ub2c8\ub2e4. \ud504\ub9ac\ucee4\ub125\ud2b8\ub97c \uacfc\ub3c4\ud558\uac8c \uc0ac\uc6a9\ud558\uc9c0 \ub9c8\uc2ed\uc2dc\uc624 \u2014 \uac01 \uc5f0\uacb0\uc740 \ub9ac\uc18c\uc2a4\ub97c \uc18c\ube44\ud558\ub294 \uc5f0\uacb0\uc744 \uc5fd\ub2c8\ub2e4.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n<h2 class=\"wp-block-heading\" id=\"troubleshooting\">\ube60\ub978 \ucc38\uc870 \ubb38\uc81c \ud574\uacb0 \ud45c<\/h2>\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>\uc99d\uc0c1<\/th><th>\uac00\ub2a5\ud55c \uc6d0\uc778<\/th><th>\ud574\uacb0 \ubc29\ubc95<\/th><\/tr><tr><td>\ubaa8\ub4e0 \uc0ac\uc774\ud2b8\uac00 \uccab \ubc29\ubb38 \uc2dc \ub290\ub9ac\uac8c \ub85c\ub4dc\ub428<\/td><td>\ub290\ub9b0 ISP DNS \ub9ac\uc878\ubc84<\/td><td>Cloudflare (1.1.1.1) \ub610\ub294 Google (8.8.8.8)\ub85c \uc804\ud658\ud558\uc2ed\uc2dc\uc624. \uba3c\uc800 \ub77c\uc6b0\ud130\ub97c \uc7ac\uc2dc\uc791\ud558\uc2ed\uc2dc\uc624.<\/td><\/tr><tr><td>\ud398\uc774\uc9c0\uac00 \ub85c\ub4dc\ub418\uae30 \uc2dc\uc791\ud558\uae30 \uc804\uc5d0 5\ucd08 \uc9c0\uc5f0<\/td><td>IPv6 \ud3f4\ubc31 \uc9c0\uc5f0<\/td><td>\ub124\ud2b8\uc6cc\ud06c \uc5b4\ub311\ud130\uc5d0\uc11c IPv6 \ube44\ud65c\uc131\ud654 \ub610\ub294 OS\ub97c IPv4\ub97c \uc120\ud638\ud558\ub3c4\ub85d \uc124\uc815\ud558\uc2ed\uc2dc\uc624.<\/td><\/tr><tr><td>\ud2b9\uc815 \ub3c4\uba54\uc778\uc774 \ud574\uc11d\ub418\uc9c0 \uc54a\uc74c<\/td><td>\uc624\ub798\ub41c DNS \uce90\uc2dc<\/td><td>OS \ubc0f \ube0c\ub77c\uc6b0\uc800\uc5d0\uc11c DNS \uce90\uc2dc\ub97c \ud50c\ub7ec\uc2dc\ud558\uc2ed\uc2dc\uc624.<\/td><\/tr><tr><td>\ud130\ubbf8\ub110\uc5d0\uc11c\ub294 DNS\uac00 \uc791\ub3d9\ud558\uc9c0\ub9cc \ube0c\ub77c\uc6b0\uc800\uac00 \ub290\ub9bc<\/td><td>\ube0c\ub77c\uc6b0\uc800 DoH \ubb34\uc2dc \ub610\ub294 \ud655\uc7a5 \ud504\ub85c\uadf8\ub7a8 \uac04\uc12d<\/td><td>Chrome\/Firefox \ubcf4\uc548 DNS \uc124\uc815\uc744 \ud655\uc778\ud558\uc2ed\uc2dc\uc624. \ud655\uc7a5 \ud504\ub85c\uadf8\ub7a8\uc744 \ube44\ud65c\uc131\ud654\ud55c \uc0c1\ud0dc\uc5d0\uc11c \uc2dc\ud06c\ub9bf \ubaa8\ub4dc\uc5d0\uc11c \ud14c\uc2a4\ud2b8\ud558\uc2ed\uc2dc\uc624.<\/td><\/tr><tr><td>VPN\uc774 \uc5f0\uacb0\ub41c \uacbd\uc6b0\uc5d0\ub9cc DNS\uac00 \ub290\ub9bc<\/td><td>VPN DNS \ub77c\uc6b0\ud305<\/td><td>VPN \uc124\uc815\uc5d0\uc11c \uc0ac\uc6a9\uc790 \uc9c0\uc815 DNS\ub97c \uad6c\uc131\ud558\uac70\ub098 dnsleaktest.com\uc5d0\uc11c DNS \ub204\ucd9c\uc744 \ud655\uc778\ud558\uc2ed\uc2dc\uc624.<\/td><\/tr><tr><td>\uc548\ud2f0\ubc14\uc774\ub7ec\uc2a4 \uc2e4\ud589 \uc2dc \uac04\ud5d0\uc801\uc73c\ub85c \ub290\ub9b0 DNS<\/td><td>\uc548\ud2f0\ubc14\uc774\ub7ec\uc2a4 DNS \ud544\ud130\ub9c1<\/td><td>\uc6f9 \ubcf4\ud638\ub97c \uc77c\uc2dc\uc801\uc73c\ub85c \ube44\ud65c\uc131\ud654\ud558\uc2ed\uc2dc\uc624. \ub354 \ube60\ub978 \uacbd\uc6b0 DNS \uc11c\ubc84 \uc608\uc678\ub97c \ucd94\uac00\ud558\uc2ed\uc2dc\uc624.<\/td><\/tr><tr><td>dig +trace\uac00 \ud55c \ud649\uc5d0\uc11c &gt;200 ms\ub97c \ubcf4\uc5ec\uc90c<\/td><td>\ub290\ub9b0 \uad8c\uc704 \uc788\ub294 \ub124\uc784\uc11c\ubc84<\/td><td>CDN \uc544\ud0a4\ud14d\ucc98\ub97c \uac00\uc9c4 DNS \uc81c\uacf5\uc5c5\uccb4\ub85c \uc804\ud658\ud558\uac70\ub098 CNAME \ud50c\ub798\ud2b8\ub2dd\uc744 \uc0ac\uc6a9\ud558\uc2ed\uc2dc\uc624.<\/td><\/tr><tr><td>PageSpeed \/ WebPageTest\uc5d0\uc11c \ub192\uc740 DNS \uc2dc\uac04<\/td><td>\ub108\ubb34 \ub9ce\uc740 \uc11c\ub4dc\ud30c\ud2f0 \ub3c4\uba54\uc778<\/td><td>dns-prefetch \/ preconnect \ud78c\ud2b8\ub97c \ucd94\uac00\ud558\uc2ed\uc2dc\uc624. \uc678\ubd80 \ub3c4\uba54\uc778\uc744 \uc904\uc774\uc2ed\uc2dc\uc624. \ube44\ud544\uc218 JS\ub97c \uc9c0\uc5f0\ud558\uc2ed\uc2dc\uc624.<\/td><\/tr><tr><td>DNS\uac00 \uc791\ub3d9\ud558\uc9c0\ub9cc \uac04\ud5d0\uc801\uc73c\ub85c \ub290\ub9bc<\/td><td>\uacfc\ubd80\ud558\ub41c \ub124\uc784\uc11c\ubc84 \ub610\ub294 \uc720\ub839 \uc5b4\ub311\ud130<\/td><td>GRC DNS Benchmark\ub85c \ubca4\uce58\ub9c8\ud06c\ud558\uc2ed\uc2dc\uc624. \uc720\ub839 \ub124\ud2b8\uc6cc\ud06c \uc5b4\ub311\ud130\ub97c \uc81c\uac70\ud558\uc2ed\uc2dc\uc624. \ubcf4\uc870 DNS\ub97c \uace0\ub824\ud558\uc2ed\uc2dc\uc624.<\/td><\/tr><tr><td>\ud2b9\uc815 \uc9c0\uc5ed\uc5d0\uc11c\ub9cc DNS\uac00 \ub290\ub9bc<\/td><td>\uc9c0\ub9ac\uc801 \uac70\ub9ac<\/td><td>\uc804 \uc138\uacc4 \uc560\ub2c8\uce90\uc2a4\ud2b8\ub97c \uac00\uc9c4 DNS \uc81c\uacf5\uc5c5\uccb4 \uc0ac\uc6a9 (Cloudflare, Route 53).<\/td><\/tr><tr><td>DoH\uac00 \ucf1c\uc9c4 \uc0c1\ud0dc\uc5d0\uc11c \ub85c\uceec \ub124\ud2b8\uc6cc\ud06c \ub3c4\uba54\uc778\uc774 \ud574\uc11d\ub418\uc9c0 \uc54a\uc74c<\/td><td>\ub85c\uceec DNS\ub97c \uc6b0\ud68c\ud558\ub294 DoH<\/td><td>\ube0c\ub77c\uc6b0\uc800\uc5d0\uc11c DoH\ub97c \ube44\ud65c\uc131\ud654\ud558\uac70\ub098 \ubd84\ud560 DNS\ub97c \uad6c\uc131\ud558\uc2ed\uc2dc\uc624. \uc5d4\ud130\ud504\ub77c\uc774\uc988\uc5d0\ub294 DoT\ub97c \uc0ac\uc6a9\ud558\uc2ed\uc2dc\uc624.<\/td><\/tr><tr><td>\ucd5c\uadfc \uc18c\ud504\ud2b8\uc6e8\uc5b4 \uc124\uce58 \ud6c4 \ud398\uc774\uc9c0\uac00 \ub290\ub9bc<\/td><td>\uc0c8\ub85c\uc6b4 VPN\/VM\uc774 \uc720\ub839 \ub124\ud2b8\uc6cc\ud06c \uc5b4\ub311\ud130 \ucd94\uac00<\/td><td>\uc7a5\uce58 \uad00\ub9ac\uc790\uc5d0\uc11c \uc720\ub839 \uc5b4\ub311\ud130\ub97c \ud655\uc778\ud558\uc2ed\uc2dc\uc624. \uc624\ub798\ub41c DNS \uad6c\uc131\uc744 \uc81c\uac70\ud558\uc2ed\uc2dc\uc624.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>\ub290\ub9b0 DNS \uc870\ud68c\ub294 \ube0c\ub77c\uc6b0\uc800\uac00 \uc6f9\ud398\uc774\uc9c0\ub97c \ub85c\ub4dc\ud558\uae30 \uc2dc\uc791\ud558\uae30 \uc804\uc5d0\ub3c4 \ubd88\ud544\uc694\ud55c \uc9c0\uc5f0\uc744 \ucd94\uac00\ud569\ub2c8\ub2e4. \uc77c\ubc18\uc801\uc778 DNS \ud574\uc11d\uc740 20\u2013120 ms\uac00 \uac78\ub9ac\uc9c0\ub9cc, \uc798\ubabb \uad6c\uc131\ub418\uc5c8\uac70\ub098 \uc131\ub2a5\uc774 \ub5a8\uc5b4\uc9c0\ub294 DNS\ub294 \uadf8 \uc2dc\uac04\uc744 \ud6e8\uc52c \ub354 \ub298\ub9b4 \uc218 \uc788\uc2b5\ub2c8\ub2e4\u2026 <a class=\"more-link\" href=\"https:\/\/securitybriefing.net\/ko\/%ea%b8%b0%ec%88%a0\/%eb%8a%90%eb%a6%b0-dns-%ec%a1%b0%ed%9a%8c%eb%a5%bc-%ed%95%b4%ea%b2%b0%ed%95%98%eb%8a%94-%eb%b0%a9%eb%b2%95\/\"><span class=\"screen-reader-text\">\ub290\ub9b0 DNS \uc870\ud68c\ub97c \uc218\uc815\ud558\ub294 \ubc29\ubc95<\/span> <strong>\uacc4\uc18d \uc77d\uae30<\/strong><\/a><\/p>","protected":false},"author":3,"featured_media":5248,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[30],"tags":[],"class_list":["post-5245","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tech","entry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How to Fix Slow DNS Lookup: 12-Step Diagnostic &amp; Fix<\/title>\n<meta name=\"description\" content=\"How to fix slow DNS lookup in 12 steps. Covers dig, nslookup, IPv6 fallback, DoH, VPN conflicts, local caching, browser overrides, and DNS prefetching with code.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/securitybriefing.net\/ko\/\uae30\uc220\/\ub290\ub9b0-dns-\uc870\ud68c\ub97c-\ud574\uacb0\ud558\ub294-\ubc29\ubc95\/\" \/>\n<meta property=\"og:locale\" content=\"ko_KR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to Fix Slow DNS Lookup: 12-Step Diagnostic &amp; Fix\" \/>\n<meta property=\"og:description\" content=\"How to fix slow DNS lookup in 12 steps. 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