{"id":11741,"date":"2025-10-30T20:12:14","date_gmt":"2025-10-31T01:12:14","guid":{"rendered":"https:\/\/www.rushworth.us\/lisa\/?p=11741"},"modified":"2025-10-31T10:14:04","modified_gmt":"2025-10-31T15:14:04","slug":"getting-cert-info-from-host","status":"publish","type":"post","link":"https:\/\/www.rushworth.us\/lisa\/?p=11741","title":{"rendered":"Getting Cert Info From Host"},"content":{"rendered":"<p>An OpenSSL command to retrieve the cert chain from a host and parse out the CN and expiry info<\/p>\n<p>[lisa@linux05 ~]# openssl s_client -connect 10.5.5.75:443 -servername lisa.rushworth.us -showcerts &lt;\/dev\/null 2&gt;\/dev\/null | sed -n &#8216;\/BEGIN CERTIFICATE\/,\/END CERTIFICATE\/p&#8217; | openssl x509 -noout -subject -startdate -enddate -nameopt RFC2253<br \/>\nsubject=CN=lisa.rushworth.us<br \/>\nnotBefore=Sep 2 03:28:34 2025 GMT<br \/>\nnotAfter=Dec 1 03:28:33 2025 GMT<\/p>\n","protected":false},"excerpt":{"rendered":"<p>An OpenSSL command to retrieve the cert chain from a host and parse out the CN and expiry info [lisa@linux05 ~]# openssl s_client -connect 10.5.5.75:443 -servername lisa.rushworth.us -showcerts &lt;\/dev\/null 2&gt;\/dev\/null | sed -n &#8216;\/BEGIN CERTIFICATE\/,\/END CERTIFICATE\/p&#8217; | openssl x509 -noout -subject -startdate -enddate -nameopt RFC2253 subject=CN=lisa.rushworth.us notBefore=Sep 2 03:28:34 2025 GMT notAfter=Dec 1 03:28:33 2025 &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[30],"tags":[823,206,234],"class_list":["post-11741","post","type-post","status-publish","format-standard","hentry","category-system-administration","tag-certificate","tag-certificates","tag-openssl"],"_links":{"self":[{"href":"https:\/\/www.rushworth.us\/lisa\/index.php?rest_route=\/wp\/v2\/posts\/11741","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.rushworth.us\/lisa\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.rushworth.us\/lisa\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.rushworth.us\/lisa\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.rushworth.us\/lisa\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=11741"}],"version-history":[{"count":1,"href":"https:\/\/www.rushworth.us\/lisa\/index.php?rest_route=\/wp\/v2\/posts\/11741\/revisions"}],"predecessor-version":[{"id":11742,"href":"https:\/\/www.rushworth.us\/lisa\/index.php?rest_route=\/wp\/v2\/posts\/11741\/revisions\/11742"}],"wp:attachment":[{"href":"https:\/\/www.rushworth.us\/lisa\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=11741"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.rushworth.us\/lisa\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=11741"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.rushworth.us\/lisa\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=11741"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}