Looking for logging into the Ubuntu Server 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 Ubuntu Server site. After that you can login as usual with your login credentials.
https://www.sejuku.net/blog/58846
https://www.techonthenet.com/linux/sysadmin/ubuntu/login_16_04.php
http://tadaoyamaoka.hatenablog.com/entry/2018/01/10/233519
https://qiita.com/haniokasai/items/98c92470562f7ac38a29
https://www.hiroom2.com/2017/05/16/ubuntu-16-04-root%E3%81%A7%E3%83%AD%E3%82%B0%E3%82%A4%E3%83%B3%E3%81%99%E3%82%8B/
https://askubuntu.com/questions/280689/what-is-my-login-username-and-password
https://help.sakura.ad.jp/hc/ja/articles/360000199021-Ubuntu%E3%81%AE%E3%83%AD%E3%82%B0%E3%82%A4%E3%83%B3%E6%96%B9%E6%B3%95
https://ubuntuforums.org/showthread.php?t=2336776
https://www.yokoweb.net/2018/05/03/ubuntu-16-04-landscape-sysinfo/
https://kledgeb.blogspot.com/2012/08/ubuntu-18-loginlogout.html
https://help.gmocloud.com/app/answers/detail/a_id/203/~/ubuntu%E3%82%B5%E3%83%BC%E3%83%90%E3%83%BC%E3%81%ABssh%E3%81%A7%E3%83%AD%E3%82%B0%E3%82%A4%E3%83%B3%E3%81%8C%E3%81%A7%E3%81%8D%E3%81%AA%E3%81%84%E3%80%82
https://ja.stackoverflow.com/questions/29633/ubuntu-%E3%82%B5%E3%83%BC%E3%83%90%E3%83%BC%E3%81%B8%E3%81%AE%E3%83%AA%E3%83%A2%E3%83%BC%E3%83%88%E3%83%AD%E3%82%B0%E3%82%A4%E3%83%B3
https://www.karelie.net/install-ssh-ubuntu-1804/