Looking for logging into the On Server With Phpbb3 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 On Server With Phpbb3 site. After that you can login as usual with your login credentials.
https://www.phpbb.com/community/viewtopic.php?f=46&t=671905
https://www.phpbb.com/support/docs/en/3.2/kb/article/installing-and-setting-up-your-own-web-server/
https://www.phpbb.de/community/viewtopic.php?t=238787
https://wiki.univention.de/index.php/Cool_Solution_-_Setting_up_phpBB3_with_LDAP_authentication
https://www.siteground.com/kb/how_can_i_installconfigure_my_phpbb2_to_be_able_to_access_it/
https://www.checkdomain.de/support/webhosting-und-homepage/software-installieren-manuell/phpbb-manuelle-installation/
http://www.assyrianlanguages.org/phpBB3/docs/INSTALL.html
https://www.interserver.net/tips/kb/install-phpbb-ubuntu-server/
https://stackoverflow.com/questions/16788764/phpbb-login-script
https://stackoverflow.com/questions/23223450/phpbb-check-that-user-is-logged-in-on-custom-php-page
https://stackoverflow.com/questions/41239/i-am-having-trouble-getting-phpbb-to-authenticate-with-our-active-directory
https://docs.oneall.com/plugins/guide/social-login-phpbb/3.1/
https://www.hosteurope.de/blog/howto-wie-installiert-man-phpbb-ueber-das-pleskpanel/