# Installation of the Authentication Service SSO
# Requirements
- installed 4App Core Engine, version 3.8.x or higher for the possibility to download. The web service supports version 3.6 or higher, though.
- installed 4App Authentication Provider LDAP (not required for installing this 4App, but necessary for its usage).
# Further Requirements
- the downloaded web service file must be installed on a Windows server connected to the domain for which SSO should be processed
- Java JDK 17
- Apache HTTP Server ("HTTPD")
- Apache Tomcat 9 (version 10 is currently not supported)
# Installation of the 4App
The Authentication Service SSO is available as a separate 4App (4allportal-authentication-service-sso) and can be downloaded and installed via the app management in the administration area. After installation, activate the 4App and restart the system.
You now find new admin snap-in Authentication/LDAP provider SSO extension
in the administration area of your 4ALLPORTAL. The snap-in allows to download the required web service file.
Installation and configuration instructions for Java, Apache, Tomcat, and the web service file can be found here.