{"id":7037,"date":"2018-01-26T15:42:32","date_gmt":"2018-01-26T20:42:32","guid":{"rendered":"https:\/\/michigan.it.umich.edu\/news\/?p=7037"},"modified":"2024-07-08T06:06:05","modified_gmt":"2024-07-08T10:06:05","slug":"dns-re-address","status":"publish","type":"post","link":"https:\/\/michigan.it.umich.edu\/news\/2018\/01\/26\/dns-re-address\/","title":{"rendered":"DNS Re-address Project nears completion"},"content":{"rendered":"<div id=\"attachment_7040\" style=\"width: 460px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-7040\" class=\"size-full wp-image-7040\" src=\"https:\/\/michigan.it.umich.edu\/news\/wp-content\/uploads\/2018\/01\/31137762_s.jpg\" alt=\"&quot; &quot;\" width=\"450\" height=\"300\" srcset=\"https:\/\/michigan.it.umich.edu\/news\/wp-content\/uploads\/2018\/01\/31137762_s.jpg 450w, https:\/\/michigan.it.umich.edu\/news\/wp-content\/uploads\/2018\/01\/31137762_s-125x83.jpg 125w, https:\/\/michigan.it.umich.edu\/news\/wp-content\/uploads\/2018\/01\/31137762_s-300x200.jpg 300w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><p id=\"caption-attachment-7040\" class=\"wp-caption-text\">(Copyright: <a href=\"https:\/\/www.123rf.com\/profile_scanrail\">scanrail \/ 123RF Stock Photo<\/a>)<\/p><\/div>\n<p><span style=\"font-weight: 400;\">In an effort to further secure and reduce the complexity of U-M networks, ITS Infrastructure has worked for the past year with unit IT representatives to change the IP addresses of U-M\u2019s domain name system (DNS) resolver servers from public to private.\u00a0<\/span><span style=\"font-weight: 400;\">The goals of the project were to:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Improve security by reducing internet threats that exploit DNS resolvers.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Reduce network complexity by consolidating DNS server addresses from nine public IP addresses to two private IP addresses.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Reduce maintenance costs by providing only two DNS server addresses to campus for DNS resolution.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">To successfully complete this effort, systems across U-M relying on DNS resolver services that ITS provides to campus will need to use the new private IP addresses listed below. \u00a0To date 99.5% (175,000+) of systems at U-M are using the new private DNS resolver IP addresses. ITS has been doing active outreach trying to connect with owners of the remaining systems still using the old resolver addresses to ensure their systems update \u00a0to the new DNS resolver IP addresses.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">On<\/span><b> February 24, 2018, <\/b><span style=\"font-weight: 400;\">ITS will turn off the nine public IPs for the public DNS resolvers. At that time all systems must be configured to the new private IP addresses for DNS resolver servers:<\/span><\/p>\n<p><strong>New private IP addresses for DNS resolver servers:<\/strong><\/p>\n<ul>\n<li><span style=\"font-weight: 400;\">10.10.10.10 <\/span><span style=\"font-weight: 400;\">&#8211; Primary DNS resolver address<\/span><\/li>\n<li>\n<p style=\"display: inline !important;\">10.10.5.5 &#8211; Secondary DNS resolver address<\/p>\n<\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">For those that fail to make this change, a redirect webpage with instructions on how to change to \u00a0resolver IP addresses will be provided starting February 24. For the .5% of systems that remain to be reconfigured to use the new private IP DNS resolver addresses, DNS resolver services will no longer function after February 24 without updating DNS resolver addresses to the new private IP addresses.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A <a href=\"https:\/\/docs.google.com\/document\/d\/1CgaspoGqh3v8gof7xK6fYv6O03NNVhHTdvnMzlTpQq8\/edit\">project overview<\/a>, with list of old DNS resolver addresses that will be turned off, provides additional detail.\u00a0<\/span><span style=\"font-weight: 400;\">For questions or concerns, contact <\/span><a href=\"mailto:Hostmaster@umich.edu\"><span style=\"font-weight: 400;\">Hostmaster@umich.edu<\/span><\/a><span style=\"font-weight: 400;\">. \u00a0ITS Infrastructure will be happy to work with you, if you need additional assistance.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>In an effort to further secure and reduce the complexity of U-M networks, ITS Infrastructure has worked for the past year with unit IT representatives to change the IP addresses of U-M\u2019s domain name system (DNS) resolver servers from public to private.\u00a0The goals of the project were to: Improve security by reducing internet threats that exploit DNS resolvers.\u2026 <span class=\"read-more\"><a href=\"https:\/\/michigan.it.umich.edu\/news\/2018\/01\/26\/dns-re-address\/\">Read More &raquo;<\/a><\/span><\/p>\n","protected":false},"author":22,"featured_media":7040,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","_umich_oidc_access":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_ef_editorial_meta_date_first-draft-date":"","_ef_editorial_meta_paragraph_assignment":"","_ef_editorial_meta_checkbox_needs-photo":"","_ef_editorial_meta_number_word-count":"","footnotes":""},"categories":[7],"tags":[98,256,111],"class_list":["post-7037","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-projects-services","tag-infrastructure","tag-network","tag-web"],"uagb_featured_image_src":{"full":["https:\/\/michigan.it.umich.edu\/news\/wp-content\/uploads\/2018\/01\/31137762_s.jpg",450,300,false],"thumbnail":["https:\/\/michigan.it.umich.edu\/news\/wp-content\/uploads\/2018\/01\/31137762_s-125x83.jpg",125,83,true],"medium":["https:\/\/michigan.it.umich.edu\/news\/wp-content\/uploads\/2018\/01\/31137762_s-300x200.jpg",300,200,true],"medium_large":["https:\/\/michigan.it.umich.edu\/news\/wp-content\/uploads\/2018\/01\/31137762_s.jpg",450,300,false],"large":["https:\/\/michigan.it.umich.edu\/news\/wp-content\/uploads\/2018\/01\/31137762_s.jpg",450,300,false],"1536x1536":["https:\/\/michigan.it.umich.edu\/news\/wp-content\/uploads\/2018\/01\/31137762_s.jpg",450,300,false],"2048x2048":["https:\/\/michigan.it.umich.edu\/news\/wp-content\/uploads\/2018\/01\/31137762_s.jpg",450,300,false],"excerpt-thumbnail":["https:\/\/michigan.it.umich.edu\/news\/wp-content\/uploads\/2018\/01\/31137762_s-200x140.jpg",200,140,true],"themonic-thumbnail":["https:\/\/michigan.it.umich.edu\/news\/wp-content\/uploads\/2018\/01\/31137762_s-60x42.jpg",60,42,true],"ioslider-thumbnail":["https:\/\/michigan.it.umich.edu\/news\/wp-content\/uploads\/2018\/01\/31137762_s-450x300.jpg",450,300,true],"post-thumbnail":["https:\/\/michigan.it.umich.edu\/news\/wp-content\/uploads\/2018\/01\/31137762_s.jpg",450,300,false],"400x250-crop":["https:\/\/michigan.it.umich.edu\/news\/wp-content\/uploads\/2018\/01\/31137762_s.jpg",375,250,false]},"uagb_author_info":{"display_name":"Patty Giorgio, ITS Communications","author_link":"https:\/\/michigan.it.umich.edu\/news\/author\/pgiorgio\/"},"uagb_comment_info":0,"uagb_excerpt":"In an effort to further secure and reduce the complexity of U-M networks, ITS Infrastructure has worked for the past year with unit IT representatives to change the IP addresses of U-M\u2019s domain name system (DNS) resolver servers from public to private.\u00a0The goals of the project were to: Improve security by reducing internet threats that&hellip;","_links":{"self":[{"href":"https:\/\/michigan.it.umich.edu\/news\/wp-json\/wp\/v2\/posts\/7037","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/michigan.it.umich.edu\/news\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/michigan.it.umich.edu\/news\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/michigan.it.umich.edu\/news\/wp-json\/wp\/v2\/users\/22"}],"replies":[{"embeddable":true,"href":"https:\/\/michigan.it.umich.edu\/news\/wp-json\/wp\/v2\/comments?post=7037"}],"version-history":[{"count":4,"href":"https:\/\/michigan.it.umich.edu\/news\/wp-json\/wp\/v2\/posts\/7037\/revisions"}],"predecessor-version":[{"id":7042,"href":"https:\/\/michigan.it.umich.edu\/news\/wp-json\/wp\/v2\/posts\/7037\/revisions\/7042"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/michigan.it.umich.edu\/news\/wp-json\/wp\/v2\/media\/7040"}],"wp:attachment":[{"href":"https:\/\/michigan.it.umich.edu\/news\/wp-json\/wp\/v2\/media?parent=7037"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/michigan.it.umich.edu\/news\/wp-json\/wp\/v2\/categories?post=7037"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/michigan.it.umich.edu\/news\/wp-json\/wp\/v2\/tags?post=7037"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}