Looking for logging into the Captive Portal Custom Page 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 Captive Portal Custom Page site. After that you can login as usual with your login credentials.
https://forum.netgate.com/topic/24513/share-your-custom-login-pages-here
https://community.arubanetworks.com/aruba/attachments/aruba/aaa-nac-guest-access-byod/10187/1/Custom%20Captive%20Portal%20Web%20Guest%20Access.pdf
https://www.arubanetworks.com/techdocs/ArubaOS_62_Web_Help/Content/ArubaFrameStyles/Captive_Portal/Internal_Captive_Portal.htm
https://gtacknowledge.extremenetworks.com/articles/How_To/How-to-send-a-successful-captive-portal-login-to-a-custom-page
https://gshaw0.wordpress.com/2015/01/08/responsive-captive-portal-login-page-for-aruba-wireless/
https://www.juniper.net/documentation/en_US/junos/topics/task/configuration/authentication-captive-portal-designing-mx-series-l2ng.html
https://www.juniper.net/documentation/en_US/junos/topics/task/configuration/authentication-captive-portal-designing.html
https://docs.sophos.com/nsg/sophos-firewall/v16056/Help/en-us/webhelp/onlinehelp/onlinehelp/WebClientPortalEdit.html
https://www.cisco.com/c/en/us/support/docs/smb/wireless/cisco-small-business-300-series-wireless-access-points/smb3036-web-customization-in-captive-portal-on-wap321-access-points.html
https://redmine.pfsense.org/issues/8793
https://forum.peplink.com/t/captive-portal-custom-page/5979
ftp://ftp.dlink.de/software/CWM-100/Anleitungen/CWM-100_HowTo_CP_Login_Page.pdf
https://forums.untangle.com/archive/index.php/f-68.html