It’s possible to have an “ldap authentication” on “2” windows domanis (domain1.local, domain2.local).
We have 2 domains in active directory, and it’s working with a single domain configuration.
As currently implemented, you would have to do two things to make this work in Guacamole:
1) Be able to access both domains from a single LDAP server. You can do this using referrals on the LDAP server(s), or by setting up an LDAP server to proxy multiple domains (OpenLDAP has some very powerful features for this).
2) Usernames would have to be unique between the two domains - any overlapping accounts would cause problems.