AppSuite:UCS SAML SSO with OX App Suite

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Univention Corporate Server SAML-SSO Configuration with OX App Suite

Preconditions

Before starting the configuration process, it is advisable to test the SAML login to UCS to ensure that it works. Authentication via SAML login works as follows. 

https://<Hostname>/univention/saml

Configuration

Setting FQDNs

The following three variables have to be set according to the environment. Multiple or all variables can contain the same FQDN. 

# FQDN for accessing the SSO - can be found in UCR: ucr get ucs/server/sso/fqdn
SSO_FQDN=ucs-sso.domain.name

# FQDN for accessing the portal
PORTAL_FQDN=portal.domain.name

# FQDN for accessing OX
MAIL_FQDN=mail.domain.name

Adjusting the provisioning

The UCS users are provisioned in OX via CLI interfaces and then written to a MySQL database. The database has a "imapLogin" field that is used by OX to log in to the user's inbox. As default it is set to the user's mail address. If SSO is to be used, it has to be appended with an asterisk and the mail server's master user. For Dovecot this would be dovecotadmin and looks as follows: 

meinuser@maildomain.de*dovecotadmin

The following two commands have to be executed to let the users be provisioned respectively by the listener: 

ucr set ox/listener/imaplogin_value='{}*dovecotadmin'
service univention-directory-listener crestart

Adjusting existing users

For already existing users, the imapLogin field has to be adjusted. See: How To: Change the OX attribute imaplogin for existing users

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