I've configure my server (RedHat Linux Advanced Server 3.1) to run LDAP. Bellow, this is my slapd.conf of my server: access to attrs=userPassword by self write by anonymous auth by * none access to * by * read and by base.ldif configurations: dn: dc=semenpadang dc: semenpadang objectClass: top objectClass: domain dn: ou=People,dc=semenpadang ou: People objectClass: top objectClass: organizationalUnit dn: ou=Group,dc=semenpadang ou: Group objectClass: top objectClass: organizationalUnit dn: cn=students,ou=Group,dc=semenpadang objectClass: top objectClass: posixGroup cn: students gidNumber: 401 dn: uid=someone,ou=People,dc=semenpadang objectClass: account objectClass: posixAccount objectClass: top objectClass: shadowAccount uid: someone cn: someone uidNumber: 101 loginShell: /bin/bash gecos: someone shadowLastChange: 12031 shadowMax: 99999 shadowWarning: 7 gidNumber: 401 homeDirectory: /home/someone userPassword: {SSHA}yGSX/Zk8kt9JV26qu9qh8DQuVPdcIkYu and my nsswitch.conf: passwd: files nisplus ldap shadow: files nisplus ldap group: files nisplus ldap hosts: files nisplus dns bootparams: nisplus [NOTFOUND=return] files ethers: files netmasks: files networks: files protocols: files nisplus ldap rpc: files services: files nisplus ldap netgroup: files nisplus ldap publickey: nisplus automount: files nisplus ldap aliases: files nisplus When using o/s linux as a client (another computer on my network) to join the LDAP server, it can. But if the client is windows(xp), it can't. I heard about samba (sambaldap). What must I configure so the server accept a login from windows(xp)? Thank u for your kind attention. Regards, Ruli Rahmadi (ruly@semenpadang.co.id)