Apereo CAS is an enterprise single sign on open source product. You can use it to do many things like to make a enterprise application portal on mobile app, web and software. I make an example to help you configure Apereo CAS with windows active directory(AD). It tested on version 6.0.0.

# LDAP Auth

cas.authn.ldap[0].type=AD

cas.authn.ldap[0].ldapUrl=ldap://192.168.0.1

cas.authn.ldap[0].useSsl=false

cas.authn.ldap[0].useStartTls=false

# cas.authn.ldap[0].connectTimeout=5000

cas.authn.ldap[0].searchFilter=sAMAccountName={user}

cas.authn.ldap[0].baseDn=dc=sample,dc=com

cas.authn.ldap[0].allowMissingPrincipalAttributeValue=true

cas.authn.ldap[0].subtreeSearch=true

# cas.authn.ldap[0].usePasswordPolicy=true

cas.authn.ldap[0].bindDn=LDAPService@sample.com

cas.authn.ldap[0].bindCredential=Happygo1!

# cas.authn.ldap[0].poolPassivator=NONE|CLOSE|BIND

# cas.authn.ldap[0].enhanceWithEntryResolver=true

cas.authn.ldap[0].dnFormat=%s@sample.com

cas.authn.ldap[0].principalAttributeId=sAMAccountName

# cas.authn.ldap[0].principalAttributePassword

# Give an attribute list released from LDAP to CAS, could be used with attributeRepository.defaultAttributesToRelease to be visible on CAS P3 serviceValidate

cas.authn.ldap[0].principalAttributeList=sAMAccountName,sn,cn,givenName,displayName,memberOf

cas.authn.ldap[0].allowMultiplePrincipalAttributeValues=true

# cas.authn.ldap[0].additionalAttributes=

# cas.authn.ldap[0].credentialCriteria=

Make sure your pom.xml file have follow configuration.

<dependency>

<groupId>org.apereo.cas</groupId>

         <artifactId>cas-server-support-ldap</artifactId>

         <version>${cas.version}</version>

</dependency>

You can reference our cas-overlay project at https://github.com/MarvinHsu/cas-overlay to see whole setting.