Looking for logging into the Etc Defs site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Etc Defs site. After that you can login as usual with your login credentials.
https://linuxjm.osdn.jp/html/shadow/man5/login.defs.5.html
https://qiita.com/LostEnryu/items/4e439dbf1a61388cc61d
https://www.express.nec.co.jp/linux/distributions/knowledge/system/password.html
http://manpages.ubuntu.com/manpages/bionic/ja/man5/login.defs.5.html
http://man7.org/linux/man-pages/man5/login.defs.5.html
https://orebibou.com/2014/05/linux%E3%81%A7%E3%83%91%E3%82%B9%E3%83%AF%E3%83%BC%E3%83%89%E3%83%9D%E3%83%AA%E3%82%B7%E3%83%BC%E3%82%92%E8%A8%AD%E5%AE%9A%E3%81%99%E3%82%8B/
https://www.rootlinks.net/2017/03/04/centos6rhel6%E3%81%A8centos7rhel7%E3%81%AEetclogin-defs%E3%81%AE%E9%81%95%E3%81%84/
https://www.atmarkit.co.jp/flinux/rensai/linuxtips/383cngpwdall.html
http://www.linux-cmd.com/login.defs.html
https://www.thegeekdiary.com/understanding-etclogin-defs-file/
http://wiki.onakasuita.org/pukiwiki/?Linux%2Fetc%2Flogin.defs
https://hamaco.hatenablog.jp/entry/20080425/1209123632
https://ex1.m-yabe.com/archives/3259