AD-LDAP

ldapsearch -Hldap://192.168.2.20 -x -W \ 
 -D "cn=Mathias Jeschke,cn=Users,dc=sar,dc=informatik,dc=hu-berlin,dc=de" \
 -b "cn=Users,dc=sar,dc=informatik,dc=hu-berlin,dc=de" "(objectClass=person)"