{"id":2754,"date":"2017-03-22T13:05:46","date_gmt":"2017-03-22T17:05:46","guid":{"rendered":"https:\/\/michigan.it.umich.edu\/news\/?p=2754"},"modified":"2024-07-08T06:06:30","modified_gmt":"2024-07-08T10:06:30","slug":"dns-re-address-project","status":"publish","type":"post","link":"https:\/\/michigan.it.umich.edu\/news\/2017\/03\/22\/dns-re-address-project\/","title":{"rendered":"DNS Re-address project"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">In an effort to further secure and reduce the complexity of University of Michigan networks, ITS has been working with units to change the IP addresses of U-M\u2019s DNS resolver servers from public to private IPs. \u00a0At the halfway mark, approximately 70% of systems have transitioned to new DNS resolver addresses. By early April, ITS DHCP (Dynamic Host Configuration Protocol) will transition. After ITS DHCP has transitioned, the remaining hosts will be those requiring manual DNS configurations.\u00a0<\/span>The project scope includes all systems on the U-M Ann Arbor campus configured to use the current nine (9) DNS resolver addresses.<\/p>\n<p><b><i>Current DNS resolver addresses:<\/i><\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">141.211.125.15<\/span><i><span style=\"font-weight: 400;\"> &#8211; Originally an authoritative DNS server<\/span><\/i><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">141.211.125.16<\/span><i><span style=\"font-weight: 400;\"> &#8211; Originally Restricted to Data Centers<\/span><\/i><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">141.211.125.17<\/span><i><span style=\"font-weight: 400;\"> &#8211; Originally South\/Central Campus<\/span><\/i><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">141.211.144.15<\/span><i><span style=\"font-weight: 400;\"> &#8211; Originally an authoritative DNS server<\/span><\/i><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">141.211.144.16<\/span><i><span style=\"font-weight: 400;\"> &#8211; Originally Restricted to Data Centers<\/span><\/i><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">141.211.144.17<\/span><i><span style=\"font-weight: 400;\"> &#8211; Originally North Campus<\/span><\/i><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">141.212.2.69<\/span><i><span style=\"font-weight: 400;\"> &#8211; Originally College of Engineering Server<\/span><\/i><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">141.212.2.81<\/span><i><span style=\"font-weight: 400;\"> &#8211; Originally College of Engineering Server<\/span><\/i><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">141.213.73.83<\/span><i><span style=\"font-weight: 400;\"> &#8211; Originally College of Engineering Server<\/span><\/i><\/li>\n<\/ul>\n<p><b><i>New private IP addresses for DNS resolver servers:<\/i><\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\"><i><span style=\"font-weight: 400;\">10.10.10.10 <\/span><span style=\"font-weight: 400;\">&#8211; Primary DNS resolver address<\/span><\/i><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">10.10.5.5<\/span><span style=\"font-weight: 400;\"> &#8211; Secondary DNS resolver address<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">To assist units in checking which hosts are using the new DNS resolver IP Addresses and which still need to be updated, ITS has developed a <\/span><a href=\"https:\/\/nettools.umnet.umich.edu\/umnet-cgi\/dnsreschk\"><span style=\"font-weight: 400;\">DNS Resolver Check Tool<\/span><\/a><span style=\"font-weight: 400;\"> and <\/span><a href=\"http:\/\/documentation.its.umich.edu\/node\/590\"><span style=\"font-weight: 400;\">step by step instructions<\/span><\/a><span style=\"font-weight: 400;\"> for using the tool. This tool has been created specifically for this effort and will not be available after completion of this project.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>In an effort to further secure and reduce the complexity of University of Michigan networks, ITS has been working with units to change the IP addresses of U-M\u2019s DNS resolver servers from public to private IPs. \u00a0At the halfway mark, approximately 70% of systems have transitioned to new DNS resolver addresses. By early April, ITS DHCP (Dynamic Host\u2026 <span class=\"read-more\"><a href=\"https:\/\/michigan.it.umich.edu\/news\/2017\/03\/22\/dns-re-address-project\/\">Read More &raquo;<\/a><\/span><\/p>\n","protected":false},"author":22,"featured_media":0,"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":[256,83],"class_list":["post-2754","post","type-post","status-publish","format-standard","hentry","category-projects-services","tag-network","tag-wifi"],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"excerpt-thumbnail":false,"themonic-thumbnail":false,"ioslider-thumbnail":false,"post-thumbnail":false,"400x250-crop":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 University of Michigan networks, ITS has been working with units to change the IP addresses of U-M\u2019s DNS resolver servers from public to private IPs. \u00a0At the halfway mark, approximately 70% of systems have transitioned to new DNS resolver addresses. By early April, ITS&hellip;","_links":{"self":[{"href":"https:\/\/michigan.it.umich.edu\/news\/wp-json\/wp\/v2\/posts\/2754","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=2754"}],"version-history":[{"count":3,"href":"https:\/\/michigan.it.umich.edu\/news\/wp-json\/wp\/v2\/posts\/2754\/revisions"}],"predecessor-version":[{"id":2757,"href":"https:\/\/michigan.it.umich.edu\/news\/wp-json\/wp\/v2\/posts\/2754\/revisions\/2757"}],"wp:attachment":[{"href":"https:\/\/michigan.it.umich.edu\/news\/wp-json\/wp\/v2\/media?parent=2754"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/michigan.it.umich.edu\/news\/wp-json\/wp\/v2\/categories?post=2754"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/michigan.it.umich.edu\/news\/wp-json\/wp\/v2\/tags?post=2754"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}