I have installed ArcGIS Enterprise behind the firewall and have ArcGIS Web Adaptor for Portal in the DMZ for external access. The internal domain name is xxxx.lan, the external domain is xxxx.us. We have a wildcard certificate for the external xxxx.us domain. When attached to the internal servers there is a certificate error, as expected since the domains don't match. Wildcard certificates are not available for .lan domain. And the .us domain does not exist internally. How do I resolve certificate errors for the ArcGIS Servers and Portal for ArcGIS servers residing on the internal domain?
The main issue this is causing right now is I can't access Portal Administrative Directory at all to make adjustments since a token cannot be obtained due to the certificate error. Alternatively, how do I revert Portal to the self-signed certificate so I can access Portal Admin again?